A workpiece cutting device for hydrant production

Abstract

The application discloses a workpiece cutting device for hydrant production and particularly relates to the technical field of hydrant processing. The device comprises a base, a shell arranged on the upper end of the base, a workpiece cutting structure arranged on the rear part of the upper end of the base for cutting hydrants, and a workpiece stabilizing structure arranged on the front part of the upper end of the base for stabilizing the position of the hydrant. The device is characterized in that the adjusting screw drives the sliding block and the contact plate to move, cooperates with the arc-shaped supporting plate and the buffer rod, realizes stable clamping of the workpiece and avoids damage caused by placement, cooperates with the spring telescopic rod to lock the supporting assembly, resets the toothed block when the lock is released, resets the toothed block by the reset spring to facilitate continuous processing, blocks the leakage of debris by the shielding cover and the rubber strip, concentrates the debris discharge at the debris discharge port to keep the environment clean, and cooperates the closed assembly and the closed driving assembly with the inner wall of the workpiece to prevent the debris from entering and enhance the stability. The T-shaped column cooperates with the compression spring to avoid the impact of the shielding cover on the workpiece, and the expansion column and the balloon enhance the sealing effect.

Description

Technical Field

[0001] This invention relates to the field of fire hydrant processing technology, and in particular to a workpiece cutting device for fire hydrant production. Background Technology

[0002] The field of fire hydrant processing technology encompasses various processing techniques involved in the entire process of fire hydrant production, from raw material handling to finished product assembly. This includes multiple stages such as raw material selection, metal component forming, part cutting, surface treatment, component connection, and final assembly. The core of this technology lies in transforming raw materials such as metals into fire hydrant products that meet the safety standards and performance requirements of the fire protection industry through a series of standardized and specialized processing techniques. This includes processing key components such as the hydrant body, interfaces, and valve assemblies, as well as controlling the processing precision, dimensional consistency, and structural strength of each component. From a holistic technical perspective, fire hydrant processing technology requires the integration of knowledge from multiple disciplines, including metal processing technology, mechanical manufacturing technology, and materials science. It optimizes the processing flow based on the specific needs of fire hydrants in different scenarios, such as outdoor environments and high-pressure water supply conditions, ensuring that the processed fire hydrants possess excellent pressure resistance, sealing properties, and corrosion resistance, while simultaneously meeting efficiency requirements and cost control objectives in mass production, thus providing a reliable hardware foundation for fire emergency response.

[0003] One type of workpiece cutting device for fire hydrant production refers to specialized equipment used in the fire hydrant production process to cut and process the metal workpieces required for fire hydrants. The technical aspects addressed by this device include: cutting metal raw materials to a fixed length according to the size and specifications of different fire hydrant components; cutting metal workpieces to specific shapes according to the shape requirements of fire hydrant components, such as the cutting of circular cylinders or irregular shapes of interface components; and ensuring the flatness and perpendicularity of the cut surface during the cutting process to avoid burrs, deformation, and other problems that affect subsequent processing. To achieve the above technical aspects, the device generally employs the following methods: equipped with an adjustable positioning mechanism to fix the metal workpiece in a designated position through mechanical clamping, ensuring that the workpiece does not shift during cutting; equipped with replaceable cutting tools according to processing needs, such as circular saw blades, plasma cutting heads, laser cutting heads, etc., to adapt to the cutting of fire hydrant workpieces of different materials (such as cast iron, stainless steel, and carbon steel) and thicknesses; and equipped with a transmission mechanism, such as a ball screw transmission system driven by a servo motor, to drive the cutting tool or workpiece to move along a preset path and speed to achieve precise cutting.

[0004] Existing cutting devices only mechanically clamp and fix workpieces through adjustable positioning mechanisms without any buffer protection structure. Workpieces are easily damaged by impacts when placed, and the lack of auxiliary locking and reset structures makes it impossible to achieve rapid continuous processing, affecting operational convenience and processing efficiency. They are only equipped with replaceable cutting tools and transmission mechanisms, without adopting multiple adjustable installation structures, making it impossible to process multiple parts simultaneously and adapt to different workpiece specifications, resulting in low processing efficiency. They lack shielding, centralized chip removal, and internal wall sealing structures, making it easy for cutting debris to leak out and pollute the environment and potentially enter the workpiece. They lack precise guidance, tool adjustment, and speed change components, resulting in insufficient cutting path accuracy and efficiency. They also lack structures for component impact protection, guidance, and enhanced sealing effects, making it impossible to avoid component impact damage and ensuring sealing effects and smooth operation. Summary of the Invention

[0005] The main objective of this invention is to provide a workpiece cutting device for fire hydrant production, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A workpiece cutting device for fire hydrant production includes a base, a housing disposed on the upper end of the base, a control console mounted on one side of the housing via a rotating arm, a workpiece cutting structure for cutting fire hydrants provided at the rear of the upper end of the base, a workpiece stabilizing structure for stabilizing the position of fire hydrants provided at the front of the upper end of the base, and an isolation door rotatably connected to the front of the inner surface of the housing.

[0008] Preferably, the workpiece stabilizing structure includes a slider that is slidably connected to the front of the upper end of the base via a slide groove. The upper end of the slider is connected to a contact plate that is in close contact with the front side of the fire hydrant via a connecting rod. The inner surface of the slider is threaded with an adjusting screw controlled by an adjusting knob. The upper middle part of the base is symmetrically provided with supporting components for supporting the fire hydrant.

[0009] Preferably, the supporting assembly includes a spring plate, and the upper end of the base has a slot for installing the spring plate. A buffer rod is fixedly connected to the upper end of the spring plate. Sliding rods are evenly fixedly connected to the movable rods on both sides of the buffer rod. Arc-shaped support plates are rotatably connected to the upper ends of the two sliding rods respectively. The ends of the outer arc surfaces of the two arc-shaped support plates away from the adjacent sliding rods are rotatably connected to the fixed rods fixedly connected to the upper end of the base. Toothed blocks are slidably connected to the inner cavity of the base. The tooth groove height of the toothed blocks is equal to the thickness of the spring plate. A connecting plate is fixedly connected to the front and rear toothed blocks together. The toothed block located at the front is fixedly connected to the slider through a spring telescopic rod. A return spring fixedly connected to the inner cavity of the base is fixedly connected to the front end of the toothed block.

[0010] Preferably, the workpiece cutting structure includes three mounting plates arranged in a triangular pattern. The lower ends of the mounting plates on the left and right sides are fixedly connected to double-rail slides that are slidably connected to the upper end of the base. The mounting plate at the rear is fixedly connected to the rear sidewall of the inner surface of the outer shell. Each of the three mounting plates is provided with a cutting component on the side near the center of the outer shell. The rear ends of each of the three cutting components are provided with a limiting rod and an electric telescopic rod that are fixedly connected to the adjacent mounting plate.

[0011] Preferably, the cutting assembly includes a shielding cover fixedly connected to the piston rod of the limiting rod. A rubber strip is fixedly connected to the front of the inner surface of the shielding cover to prevent debris leakage. A sealing component is provided in the middle of the inner surface of the shielding cover. The rear end of the sealing component is fixedly connected to the electric telescopic rod, and a sealing drive component is provided in the front of its inner surface. Chip discharge ports communicating with its outer surface are opened at the upper and lower parts of the inner surface of the shielding cover. A processing component for cutting fire hydrants is provided on the inner surface of the shielding cover.

[0012] Preferably, the processing component includes a guide ring installed on the rear side of the inner wall of the shield to guide the cutting path. The outer surface of the guide ring is slidably connected to a connecting seat via a spherical limiting post. The inner surface of the connecting seat is slidably connected to a milling cutter mounting seat via an adjusting bolt. A drive gear fixedly connected to the rear end of the connecting seat is rotatably installed in the inner cavity of the shield. A motor is fixedly installed at the rear end of the shield and is connected to the drive gear via a speed-changing gear set.

[0013] Preferably, the sealing component includes a T-shaped column that is slidably connected to the inner surface of the shielding cover. The rear end of the T-shaped column is fixedly connected to the electric telescopic rod, and the front end of its limiting plate is fixedly connected to a compression spring that is fixedly connected to the rear end of the shielding cover. The outer surface of the central column of the T-shaped column is provided with a cross groove for installing the sealing drive component. When the piston rod of the electric telescopic rod extends, the T-shaped column drives the shielding cover to move synchronously toward the fire hydrant through the compression spring. When the sealing drive component is locked relative to the inside of the fire hydrant, the shielding cover stops moving and the compression spring is compressed. At this time, the sealing drive component slides in the cross groove.

[0014] Preferably, an expansion column is fixedly connected to the front end of the T-shaped column, a balloon is fixedly connected to the outer surface of the expansion column, and through holes communicating with the balloon are distributed in an annular pattern on the inner surface of the expansion column. The sealing drive component is slidably connected to the inner surface of the expansion column.

[0015] Preferably, the closed drive component includes a sliding disc that is slidably connected to the inner surface of the cross groove and the T-shaped column. The front end of the sliding disc and the rear end of the expansion column are fixedly connected to a tension spring. The front end of the sliding disc is fixedly connected to a piston column that is slidably connected to the inner wall of the expansion column. A plurality of wedge-shaped blocks are rotatably connected to the outer surface of the sliding disc in a ring. The wedge blocks are rotatably connected to the inner wall of the sliding disc by springs, and their maximum outer diameter is larger than the inner diameter of the fire hydrant. When the wedge blocks are in contact with the inner wall of the fire hydrant and the sliding disc is locked relative to each other, the piston column moves backward relative to the expansion column and supplies air into the balloon through the piston column.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention achieves stable workpiece clamping and avoids placement damage by adjusting the screw to drive the slider and contact plate, in conjunction with the arc-shaped support plate and buffer rod. The toothed block and spring telescopic rod work together to lock the support component. When the lock is released, the reset spring drives the toothed block to reset, facilitating continuous processing. The shield and rubber strip prevent chip leakage, and the chip discharge port concentrates chip discharge to maintain a clean environment. The sealing component and the sealing drive component fit against the inner wall of the workpiece to prevent chip entry and enhance stability. The T-shaped column and compression spring work together to prevent the shield from colliding with the workpiece, and the expansion column and bladder improve the sealing effect. The guide ring and spherical limit post ensure accurate cutting path, the milling cutter mounting seat adjusts the tool position and angle, and the combination with the speed change gear set achieves precise and efficient cutting. The limit rod ensures accurate movement of the cutting structure.

[0018] This invention achieves stable clamping and precise positioning of fire hydrants through the cooperation of a workpiece stabilizing structure and a supporting component. The adjusting screw drives the slider and contact plate to move back and forth, ensuring the fire hydrant does not shift position during processing. The arc-shaped support plate, buffer rod, and spring plate work together to prevent damage to the fire hydrant from impacts during placement and ensure initial positioning stability. The fixing rod supports and limits the arc-shaped support plate, preventing excessive deformation. The toothed block, driven by the spring telescopic rod, precisely engages with the spring plate to achieve synchronous locking of the supporting component, further improving the fixing effect. The return spring resets the toothed block when unlocked, facilitating continuous processing. The overall structure ensures both processing accuracy and ease of operation.

[0019] This invention achieves efficient and stable processing of fire hydrants through the combination of a workpiece cutting structure and a workpiece stabilizing structure. Three mounting plates arranged in a triangular pattern, along with a double-rail slide, can be flexibly adjusted to adapt to different specifications of fire hydrants and process multiple parts simultaneously, significantly improving processing efficiency. The shielding cover and rubber strip in the cutting assembly effectively prevent debris leakage, and together with the chip discharge port, centralized chip removal is achieved, keeping the working environment clean. The sealing component and the sealing drive component are tightly fitted to the inner wall of the fire hydrant under the drive of the electric telescopic rod, preventing cutting debris from entering the interior and improving processing stability. The guide ring and spherical limit post in the processing component ensure accurate cutting path, the milling cutter mounting seat can adjust the position and angle of the milling cutter, and combined with the speed-changing gear set, high-precision and high-efficiency cutting is achieved. The limit rod ensures accurate movement of the cutting assembly. The overall structure improves processing accuracy, safety, and applicability.

[0020] This invention utilizes the cooperation of the T-shaped post, compression spring, and shielding cover in the sealing component to prevent the shielding cover from violently impacting the fire hydrant, thus protecting both from damage. The cross groove of the T-shaped post guides the sealing drive component, ensuring smooth sealing operation. The cooperation of the expansion post, through hole, and balloon enhances the sealing effect and prevents cutting debris from entering the fire hydrant. The cooperation of the sliding disc, wedge block, tension spring, and piston post in the sealing drive component enables the sliding disc to lock relative to the fire hydrant and allows it to reset after processing, preparing for the next operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention;

[0023] Figure 3 This is a schematic diagram of the workpiece stabilization structure and the workpiece cutting structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of a local structure at point A;

[0025] Figure 5 This is a schematic diagram of the workpiece cutting structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the cutting assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the sealing component of the present invention;

[0028] Figure 8 This is a schematic diagram showing the positional relationship between the sealing component and the sliding disk of the present invention;

[0029] Figure 9This is a schematic diagram of the structure of the enclosed drive component of the present invention.

[0030] In the diagram: 1. Base; 2. Outer shell; 3. Control console; 4. Isolation door; 5. Workpiece stabilizing structure; 51. Adjusting screw; 52. Contact plate; 53. Slider; 54. Support assembly; 541. Spring plate; 542. Fixed rod; 543. Sliding rod; 544. Buffer rod; 545. Toothed block; 546. Connecting plate; 547. Return spring; 548. Arc-shaped support plate; 6. Workpiece cutting structure; 61. Cutting assembly; 610. Guide ring; 611. Rubber strip; 612. Motor; 613. Drive gear 614. Connecting seat; 615. Milling cutter mounting seat; 616. Enclosed component; 6161. T-shaped column; 6162. Compression spring; 6163. Cross groove; 6164. Expansion column; 6165. Balloon; 6166. Through hole; 617. Enclosed drive component; 6171. Sliding plate; 6172. Wedge block; 6173. Tension spring; 6174. Piston column; 618. Shielding cover; 619. Chip discharge port; 62. Mounting plate; 63. Electric telescopic rod; 64. Limiting rod; 65. Double rail slide. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example 1: A workpiece cutting device for fire hydrant production, see reference. Figure 1 and Figure 2 The device includes a base 1, an outer shell 2 mounted on the upper part of the base 1, and a control console 3 mounted on one side of the outer shell 2 via a rotating arm. The upper rear part of the base 1 is provided with a workpiece cutting structure 6 for cutting fire hydrants, and the upper front part of the base 1 is provided with a workpiece stabilizing structure 5 for stabilizing the position of fire hydrants. An isolation door 4 is rotatably connected to the front of the inner surface of the outer shell 2. The outer shell 2 provides protection for the entire device, preventing external impurities from interfering with the processing and also preventing debris generated during processing from flying outwards and causing injury to the operator. The control console 3, mounted via a rotating arm, allows the operator to operate and control the device from different angles, improving operational convenience. The isolation door 4, when closed during equipment operation, further enhances the protective effect and ensures the safety of the working environment.

[0033] In the operation of this embodiment, when it is necessary to cut and process the fire hydrant, the fire hydrant is first placed on the workpiece stabilizing structure 5 to achieve stable fixation, then the isolation door 4 is closed, and the equipment is started through the control console 3. The workpiece cutting structure 6 cuts and processes the fire hydrant. After processing, the isolation door 4 is opened and the fire hydrant is removed. The whole process is carried out in an orderly manner to ensure the smoothness of the processing flow.

[0034] Example 2: Based on Example 1, this example achieves stable clamping and precise positioning of the fire hydrant through the cooperation of the workpiece stabilizing structure 5 and the supporting component 54. The adjusting screw 51 drives the slider 53 and contact plate 52 to move back and forth, ensuring that the fire hydrant does not shift position during processing. The arc-shaped support plate 548, buffer rod 544, and spring plate 541 work together to prevent damage to the fire hydrant from impacts during placement and ensure the stability of the initial positioning. The fixing rod 542 supports and limits the arc-shaped support plate 548, preventing excessive deformation. The toothed block 545, driven by the spring telescopic rod, precisely cooperates with the spring plate 541 to achieve synchronous locking of the supporting component 54, further improving the fixing effect. The return spring 547 drives the toothed block 545 to reset when unlocked, facilitating continuous processing. The overall structure ensures processing accuracy and ease of operation.

[0035] For further details, please refer to [link / reference]. Figure 3 The workpiece stabilizing structure 5 includes a slider 53 that is slidably connected to the front of the upper end of the base 1 via a slide groove. A contact plate 52 that is in close contact with the front side of the fire hydrant is inserted into the upper end of the slider 53 via a connecting rod. An adjusting screw 51 controlled by an adjusting knob is threaded onto the inner surface of the slider 53. Supporting components 54 for supporting the fire hydrant are symmetrically arranged at the front and back of the middle of the upper end of the base 1. In use, the adjusting screw 51 is rotated by rotating the adjusting knob. The rotation of the adjusting screw 51 drives the slider 53, which is threaded to it, to slide along the slide groove at the front of the upper end of the base 1. During the sliding process, the slider 53 drives the contact plate 52 to move towards the rear of the fire hydrant via the connecting rod until the contact plate 52 is in close contact with the rear of the fire hydrant, thereby locking the fire hydrant in the front and back direction. The supporting components 54 can play a preliminary supporting and positioning role for the fire hydrant. Together with the locking effect of the contact plate 52, the fire hydrant will not shift in position during processing, ensuring processing accuracy. The slide groove can limit the movement direction of the slider 53, preventing the slider 53 from shifting during movement and improving the locking accuracy of the contact plate 52.

[0036] For further details, please refer to [link / reference]. Figure 3 and Figure 4The supporting component 54 includes a spring plate 541. The upper end of the base 1 has a slot for installing the spring plate 541. A buffer rod 544 is fixedly connected to the upper end of the spring plate 541. Sliding rods 543 are fixedly connected to the movable rods on both sides of the buffer rod 544. Arc-shaped support plates 548 are rotatably connected to the upper ends of the two sliding rods 543 respectively. The outer arc surface of the two arc-shaped support plates 548 away from the adjacent sliding rods 543 is rotatably connected to a fixing rod 542 fixedly connected to the upper end of the base 1. A toothed block 545 is slidably connected to the inner cavity of the base 1. The tooth groove height of the toothed block 545 is equal to the thickness of the spring plate 541. The front and rear toothed blocks 545 are fixedly connected to a connecting plate 546. The toothed block 545 located at the front is fixedly connected to the slider 53 through a spring telescopic rod. A reset spring 547 fixedly connected to the inner cavity of the base 1 is fixedly connected to the front end of the toothed block 545.

[0037] When the fire hydrant is placed on the support assembly 54, the arc-shaped support plate 548 fits tightly against the outer surface of the fire hydrant. Since the arc-shaped support plate 548 is connected to the buffer rod 544 via the sliding rod 543, and the buffer rod 544 is fixed to the spring plate 541, the spring plate 541 and the buffer rod 544 provide good cushioning, preventing damage to the fire hydrant during placement and ensuring the stability of the initial positioning. The fixing rod 542 provides support and limits to the arc-shaped support plate 548, preventing excessive deformation when supporting the fire hydrant. When the slider 53 slides, it drives the toothed block 545 at the front via the spring telescopic rod. The toothed block 545 moves synchronously with the rear toothed block 545 via the connecting plate 546. Since the tooth groove height of the toothed block 545 is equal to the thickness of the spring plate 541 and they can be locked together, the toothed block 545 limits the position of the spring plate 541, thereby achieving synchronous locking of the supporting component 54 and improving the fixing effect on the fire hydrant. The return spring 547 can drive the toothed block 545 to return to its original position when the lock is released, preparing for the next processing. The spring telescopic rod can play a buffering and compensating role during the movement of the toothed block 545, ensuring that the toothed block 545 can move smoothly and cooperate precisely with the spring plate 541.

[0038] Example 3: Based on Example 2, this example achieves efficient and stable processing of fire hydrants through the cooperation of the workpiece cutting structure 6 and the workpiece stabilizing structure 5. The three mounting plates 62 arranged in a triangular pattern, together with the double-rail slide 65, can be flexibly adjusted in position to adapt to fire hydrants of different specifications and process multiple parts simultaneously, significantly improving processing efficiency. The shielding cover 618 and the rubber strip 611 in the cutting assembly 61 effectively prevent debris leakage, and together with the chip discharge port 619, centralized chip discharge is achieved, keeping the working environment clean. The sealing component 616 and the sealing drive component 617 are tightly fitted to the inner wall of the fire hydrant under the drive of the electric telescopic rod 63, preventing cutting debris from entering the interior and improving processing stability. The guide ring 610 and the spherical limit post in the processing component ensure accurate cutting path. The milling cutter mounting seat 615 can adjust the position and angle of the milling cutter, and combined with the speed change gear set, it achieves high-precision and high-efficiency cutting. The limit rod 64 ensures accurate movement of the cutting assembly 61. The overall structure improves processing accuracy, safety, and applicability.

[0039] For further details, please refer to [link / reference]. Figure 3 and Figure 5 The workpiece cutting structure 6 includes three mounting plates 62 arranged in a triangular pattern. The lower ends of the mounting plates 62 on the left and right sides are fixedly connected to double-rail slides 65 that are slidably connected to the upper end of the base 1. The mounting plate 62 at the rear is fixedly connected to the rear sidewall of the inner surface of the outer shell 2. Each of the three mounting plates 62 has a cutting assembly 61 on the side closest to the center of the outer shell 2. The rear ends of each of the three cutting assemblies 61 are equipped with a limiting rod 64 and an electric telescopic rod 63 that are fixedly connected to the adjacent mounting plate 62. The three mounting plates 62 arranged in a triangular pattern correspond to different processing positions of the fire hydrant, enabling simultaneous processing of multiple parts of the fire hydrant. To improve processing efficiency, the mounting plates 62 located on the left and right sides can slide along the upper end of the base 1 via the double-rail slide 65 at the lower end, thereby adjusting the position of the mounting plates 62 and the cutting components 61 to adapt to the processing requirements of fire hydrants of different specifications. The double-rail slide 65 ensures the stability and accuracy of the mounting plates 62 when sliding, preventing the mounting plates 62 from deviating and affecting the processing accuracy. The limit rod 64 can limit the movement of the cutting components 61, preventing the cutting components 61 from moving excessively or deviating during the movement, and ensuring that the cutting components 61 can accurately reach the processing position.

[0040] For further details, please refer to [link / reference]. Figure 6The cutting assembly 61 includes a shield 618 fixedly connected to the piston rod of the limiting rod 64. A rubber strip 611 is fixedly connected to the front of the inner surface of the shield 618 to prevent debris leakage. A sealing component 616 is provided in the middle of the inner surface of the shield 618. The rear end of the sealing component 616 is fixedly connected to the electric telescopic rod 63, and a sealing drive component 617 is provided at the front of its inner surface. Chip discharge ports 619 communicating with the outer surface are opened at the upper and lower parts of the inner surface of the shield 618. A processing component for cutting the fire hydrant is provided on the inner surface of the shield 618. When the cutting assembly 61 is working, the electric telescopic rod 63 drives the sealing component... The movement of component 616 and enclosed drive component 617 causes the shield 618 to be fitted onto the fire hydrant at the processing position. The rubber strip 611 can tightly adhere to the outer surface of the fire hydrant, preventing the leakage of chips generated during the cutting process and reducing pollution to the working environment. The chip discharge port 619 can discharge the chips inside the shield 618. In actual use, the chip discharge port 619 is connected to the chip discharge pipe to ensure that the chips can be discharged smoothly and do not accumulate, thus avoiding affecting the processing quality. The shield 618 can provide protection for the processed parts and isolate the processing area from the outside world, further preventing chip splashing and the spread of processing noise, and improving the comfort and safety of the working environment.

[0041] For further details, please refer to [link / reference]. Figure 6 The machining components include a guide ring 610 installed on the rear side of the inner wall of the shield 618 to guide the cutting path. A connecting seat 614 is slidably connected to the outer surface of the guide ring 610 through a spherical limiting post. A milling cutter mounting seat 615 is slidably connected to the inner surface of the connecting seat 614 through an adjusting bolt. A drive gear 613 is rotatably mounted in the inner cavity of the shield 618 and fixedly connected to the rear end of the connecting seat 614. A motor 612 is fixedly mounted at the rear end of the shield 618 and is connected to the drive gear 613 through a speed-changing gear set. During machining, the motor 612 starts and drives the drive gear 613 to rotate through the speed-changing gear set. The rotation of the drive gear 613 drives the connecting seat 614 fixedly connected to it to rotate. The connecting seat 614 slides on the outer surface of the guide ring 610 through the spherical limiting post. The guide ring 610 can accurately guide the cutting path and ensure machining accuracy.

[0042] The milling cutter mounting seat 615 on the inner surface of the connecting seat 614 can be adjusted in position using adjusting bolts. The adjusting bolts can be operated through the chip removal port 619 located at the top. They can be rotated using a hex wrench or a socket wrench to adjust the position of the milling cutter mounting seat 615. The position and angle of the milling cutter can be changed according to the processing requirements to achieve precise cutting of different positions of the fire hydrant. The speed-changing gear set can adjust the output speed and torque of the motor 612 according to the processing requirements, so that the milling cutter can cut at an appropriate speed, improving processing quality and efficiency. The spherical limit post can reduce the friction between the connecting seat 614 and the guide ring 610, ensuring the smooth sliding of the connecting seat 614, and also playing a certain buffering role to avoid violent collisions when the connecting seat 614 slides.

[0043] Example 4, based on Example 3, utilizes the cooperation of the T-shaped post 6161, compression spring 6162, and shielding cover 618 in the sealing component 616 to prevent the shielding cover 618 from violently impacting the fire hydrant, thus protecting both from damage. The cross groove 6163 of the T-shaped post 6161 guides the sealing drive component 617, ensuring smooth sealing operation. The cooperation of the expansion post 6164, through hole 6166, and balloon 6165 enhances the sealing effect and prevents cutting debris from entering the fire hydrant. The cooperation of the sliding disc 6171, wedge block 6172, tension spring 6173, and piston post 6174 in the sealing drive component 617 enables the sliding disc 6171 to be relatively locked to the fire hydrant and can be reset after processing, preparing for the next operation.

[0044] For further details, please refer to [link / reference]. Figure 7 and Figure 8The sealing component 616 includes a T-shaped post 6161 that is slidably connected to the inner surface of the shielding cover 618. The rear end of the T-shaped post 6161 is fixedly connected to the telescopic rod of the electric telescopic rod 63, and a compression spring 6162 that is fixedly connected to the rear end of the shielding cover 618 is fixedly connected to the front end of its limiting plate. A cross groove 6163 for installing the sealing drive component 617 is provided on the front surface of the central post of the T-shaped post 6161. When the piston rod of the electric telescopic rod 63 extends, the T-shaped post 6161 drives the shielding cover 618 to move synchronously toward the fire hydrant through the compression spring 6162. When the sealing drive component 617 is locked relative to the inside of the fire hydrant, the shielding cover 618 stops moving and the compression spring 6162 is compressed. At this time, the sealing drive component 617 slides in the cross groove 6163. When the piston rod of the electric telescopic rod 63 extends... First, the T-shaped column 6161 and the compression spring 6162 drive the shielding cover 618 to move toward the fire hydrant. The compression spring 6162 can buffer the movement of the shielding cover 618, preventing violent impact between the shielding cover 618 and the fire hydrant, and protecting the fire hydrant and the shielding cover 618 from damage. After the shielding cover 618 is fitted into place, the sealing drive component 617 locks relative to the inside of the fire hydrant, and the shielding cover 618 stops moving. The electric telescopic rod 63 continues to push the T-shaped column 6161 to move. At this time, the compression spring 6162 is compressed, providing space for the subsequent movement of the sealing drive component 617. The cross groove 6163 can provide guidance for the sliding of the sealing drive component 617, ensuring that the sealing drive component 617 can slide along the predetermined direction and ensuring the smooth progress of the sealing operation.

[0045] For further details, please refer to [link / reference]. Figure 9 An expansion column 6164 is fixedly connected to the front end of a T-shaped column 6161. A balloon 6165 is fixedly connected to the outer surface of the expansion column 6164. Through holes 6166 communicating with the balloon 6165 are distributed in a ring on the inner surface of the expansion column 6164. A sealing drive component 617 is slidably connected to the inner surface of the expansion column 6164. When the sealing drive component 617 slides in the cross groove 6163, it will drive the related components to slide on the inner surface of the expansion column 6164, thereby delivering air into the balloon 6165. The air passes through the expansion column 6164. The through-hole 6166 on the surface allows the balloon 6165 to enter, causing the balloon 6165 to inflate. The inflated balloon 6165 can fit tightly against the inner wall of the fire hydrant, further improving the sealing effect and preventing cutting debris from entering the fire hydrant. The expansion column 6164 provides installation support for the balloon 6165 while ensuring the unobstructed flow of the through-hole 6166, allowing air to enter the balloon 6165 smoothly. The balloon 6165 is made of elastic material, has good expansion and sealing properties, and can adapt to fire hydrants with different inner diameters, improving the versatility of the device.

[0046] For further details, please refer to [link / reference]. Figure 9The enclosed drive component 617 includes a sliding disk 6171 that is slidably connected to the inner surface of the cross groove 6163 and the T-shaped column 6161. A tension spring 6173 is fixedly connected to the front end of the sliding disk 6171 and the rear end of the expansion column 6164. A piston column 6174 that is slidably connected to the inner wall of the expansion column 6164 is fixedly connected to the front end of the sliding disk 6171. Several wedge-shaped wedge blocks 6172 are rotatably connected to the outer surface of the sliding disk 6171 in a ring shape. The wedge blocks 6172 are connected to the sliding disk via springs. The inner wall of 6171 is rotatably connected, and its maximum outer diameter is larger than the inner diameter of the fire hydrant. When the wedge block 6172 is in contact with the inner wall of the fire hydrant and the sliding disc 6171 is locked relative to it, the piston rod 6174 moves backward relative to the expansion rod 6164 and supplies air into the balloon 6165 through the piston rod 6174. When the closed drive component 617 moves into the fire hydrant along with the T-shaped rod 6161, the wedge block 6172 contacts the inner wall of the fire hydrant. Because the maximum outer diameter of the wedge block 6172 is larger than the inner diameter of the fire hydrant, and The wedge block 6172 is rotatably connected to the inner wall of the sliding plate 6171 via a spring. Under the elastic force of the spring, the wedge block 6172 can be firmly locked onto the inner wall of the fire hydrant, achieving relative locking between the sliding plate 6171 and the fire hydrant. After the sliding plate 6171 is relatively locked, the T-shaped column 6161 continues to move, causing the sliding plate 6171 to slide within the cross groove 6163. At the same time, the piston column 6174 at the front end of the sliding plate 6171 moves backward relative to the expansion column 6164. During the movement of the piston column 6174, it compresses the expansion column 6164. The air inside the hydrant is allowed to enter the balloon 6165 through the through hole 6166, causing the balloon 6165 to expand. The tension spring 6173 can pull the sliding plate 6171 to reset after processing, so that the piston column 6174 returns to the initial position. The air inside the balloon 6165 is discharged and returns to its original state, preparing for the next sealing operation. The wedge-shaped structure design of the wedge block 6172 makes it easier to enter the fire hydrant, and at the same time provides greater friction when locking, ensuring the stability of the locking effect.

[0047] The foregoing has shown and described 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. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece cutting device for fire hydrant production, comprising a base (1), a housing (2) disposed on the upper end of the base (1), and a control console (3) mounted on one side of the housing (2) via a rotating arm, characterized in that: The upper rear part of the base (1) is provided with a workpiece cutting structure (6) for cutting fire hydrants, and the upper front part of the base (1) is provided with a workpiece stabilizing structure (5) for stabilizing the position of fire hydrants. The front part of the inner surface of the outer shell (2) is rotatably connected with an isolation door (4). The workpiece stabilizing structure (5) includes a slider (53) that is slidably connected to the front of the upper end of the base (1) via a slide groove, and a support component (54) for supporting fire hydrants is symmetrically arranged at the front and back of the middle of the upper end of the base (1); The supporting assembly (54) includes a spring plate (541). The upper end of the base (1) has a slot for installing the spring plate (541). A buffer rod (544) is fixedly connected to the upper end of the spring plate (541). Sliding rods (543) are fixedly connected to the movable rods on both sides of the buffer rod (544). Arc-shaped support plates (548) are rotatably connected to the upper ends of the two sliding rods (543). The ends of the outer arc surfaces of the two arc-shaped support plates (548) away from the adjacent sliding rods (543) are rotatably connected to the base. (1) A fixed rod (542) is fixedly connected to the upper end. A toothed block (545) is slidably connected to the inner cavity of the base (1). The tooth groove height of the toothed block (545) is equal to the thickness of the spring plate (541). The front and rear toothed blocks (545) are fixedly connected to a connecting plate (546). The toothed block (545) located at the front is fixedly connected to the slider (53) through a spring telescopic rod. The front end of the toothed block (545) located at the front is fixedly connected to a reset spring (547) that is fixedly connected to the inner cavity of the base (1). The workpiece cutting structure (6) includes three mounting plates (62) arranged in a triangular pattern. The lower ends of the mounting plates (62) on the left and right sides are fixedly connected to double-rail slides (65) that are slidably connected to the upper end of the base (1). The mounting plate (62) at the rear is fixedly connected to the rear side wall of the inner surface of the outer shell (2). A cutting assembly (61) is provided on the side of the three mounting plates (62) near the center of the outer shell (2). The rear ends of the three cutting assemblies (61) are provided with a limiting rod (64) and an electric telescopic rod (63) that are fixedly connected to the adjacent mounting plate (62). The cutting assembly (61) includes a shield (618) fixedly connected to the piston rod of the limiting rod (64). A sealing component (616) is provided in the middle of the inner surface of the shield (618). The rear end of the sealing component (616) is fixedly connected to the telescopic rod of the electric telescopic rod (63), and a sealing drive component (617) is provided in the front of its inner surface. A processing component for cutting the fire hydrant is provided in the inner surface of the shield (618). The processing component includes a guide ring (610) installed on the rear side of the inner wall of the shield (618) for guiding the cutting path. The outer surface of the guide ring (610) is slidably connected to a connecting seat (614) via a spherical limiting post. The inner surface of the connecting seat (614) is slidably connected to a milling cutter mounting seat (615) via an adjusting bolt. The inner cavity of the shield (618) is rotatably mounted with a drive gear (613) fixedly connected to the rear end of the connecting seat (614). The rear end of the shield (618) is fixedly mounted with a motor (612) that is connected to the drive gear (613) via a speed-changing gear set. The enclosing component (616) includes a T-shaped column (6161) that is slidably connected to the inner surface of the shield (618). The rear end of the T-shaped column (6161) is fixedly connected to the telescopic rod of the electric telescopic rod (63), and the front end of its limiting plate is fixedly connected to a compression spring (6162) that is fixedly connected to the rear end of the shield (618). The outer surface of the central column of the T-shaped column (6161) is provided with a cross groove (6163) for installing the enclosing drive component (617). When the piston rod of the electric telescopic rod (63) extends, the T-shaped column (6161) drives the shield (618) to move synchronously toward the fire hydrant through the compression spring (6162). When the enclosing drive component (617) is locked relative to the inside of the fire hydrant, the shield (618) stops moving and the compression spring (6162) is compressed. At this time, the enclosing drive component (617) slides in the cross groove (6163).

2. The workpiece cutting device for fire hydrant production according to claim 1, characterized in that: The upper end of the slider (53) is connected to a contact plate (52) that is in close contact with the front side of the fire hydrant via a connecting rod. The inner surface of the slider (53) is threaded with an adjusting screw (51) controlled by an adjusting knob.

3. The workpiece cutting device for fire hydrant production according to claim 1, characterized in that: The shield (618) has a rubber strip (611) fixedly connected to the front of the inner surface to prevent debris from leaking out. The shield (618) has a chip discharge port (619) at the upper and lower parts of the inner surface that communicates with its outer surface.

4. The workpiece cutting device for fire hydrant production according to claim 3, characterized in that: The front end of the T-shaped column (6161) is fixedly connected to an expansion column (6164), and a balloon (6165) is fixedly connected to the outer surface of the expansion column (6164). The inner surface of the expansion column (6164) is provided with through holes (6166) that communicate with the balloon (6165). The closed drive component (617) is slidably connected to the inner surface of the expansion column (6164).

5. The workpiece cutting device for fire hydrant production according to claim 4, characterized in that: The closed drive component (617) includes a sliding disc (6171) that is slidably connected to the inner surface of the cross groove (6163) and the T-shaped column (6161). The front end of the sliding disc (6171) and the rear end of the expansion column (6164) are fixedly connected to a tension spring (6173). The front end of the sliding disc (6171) is fixedly connected to a piston column (6174) that is slidably connected to the inner wall of the expansion column (6164). The outer surface of the sliding disc (6171) is rotatably connected to a plurality of wedge-shaped blocks (6172) in a ring. The wedge blocks (6172) are rotatably connected to the inner wall of the sliding disc (6171) by springs and their maximum outer diameter is greater than the inner diameter of the fire hydrant. When the wedge blocks (6172) are in contact with the inner wall of the fire hydrant and the sliding disc (6171) is locked relative to each other, the piston column (6174) moves backward relative to the expansion column (6164) and supplies air into the balloon (6165) through the piston column (6174).

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