A precision cutting device applied to mold accessory production

Abstract

The application discloses a precision cutting device applied to mold accessory production and relates to the technical field of mold accessory production cutting, which comprises a cutting mechanism, a fixing arrangement, a fixing adjustment mechanism and a cutting piece; the fixing arrangement is used for cutting bar material or pipe material during mold accessory production and comprises a base, a support fixed to the bottom of the base, a rotating rod rotating on the support and a frame body fixedly sleeved on the surface of the rotating rod, and the cutting piece is installed on the frame body; the fixing adjustment mechanism is installed on the cutting mechanism and is used for clamping and fixing the bar material or the pipe material during cutting.

Description

Technical Field

[0001] This invention relates to the field of mold component production and cutting technology, and in particular to a precision cutting device for mold component production. Background Technology

[0002] In the process of mass production of mold parts, most of the components such as guide pillars, guide sleeves, and ejector pins are made by cutting metal bars and round tubes to a fixed length using a cutting device.

[0003] However, in practical applications, there are still some unresolved problems. The following are some common problems of cutting devices for mold parts production: Conventional cutting equipment has a single function and only has the ability to cut straight in one go. When performing multi-point even cutting operations on thick-walled bars and pipes, manual repeated loosening and re-clamping are required, which is cumbersome and labor-intensive. If a cut is forced through in one go, it is very easy to cause problems such as the cutting blade seizing up and the workpiece chipping and cracking. At the same time, after the cutting is completed, the end face of the workpiece generally has burrs and sharp edges, which must be transferred to a separate station for secondary chamfering and deburring, making the process complicated. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing precision cutting devices used in the production of mold parts, the present invention is proposed.

[0006] Therefore, the problem to be solved by this invention is how to solve the problem that when performing multi-point even cutting of thick-walled bars and pipes, it is necessary to manually loosen and re-align the clamps repeatedly, which is cumbersome and results in many burrs on the cut end face, requiring separate secondary grinding.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a precision cutting device for mold component production, comprising: a cutting mechanism, fixedly configured for cutting bar or tube materials during mold component production; the cutting mechanism including a base, a bracket fixed to the bottom of the base, a rotating rod rotating on the bracket, and a frame fixedly sleeved on the surface of the rotating rod, and a cutting component mounted on the frame; and a fixing and adjusting mechanism, mounted on the cutting mechanism, for clamping and fixing the bar or tube material during cutting, and for rotating and adjusting the cutting position; the fixing and adjusting mechanism including: a frame fixed to the base, a cylinder rotating on the frame, and a chuck fixed to one end of the cylinder. The cutting mechanism is used to clamp and fix bar or tube materials. The transmission component is installed on the frame, cylinder, and chuck to drive the chuck to clamp and release the bar or tube materials. The drive component is installed on the frame, base, frame, and cylinder to rotate the cylinder and chuck under the downward rotation of the frame, adjusting the cutting position of thicker diameter bars. The processing mechanism is installed on the cutting mechanism and transmission component to deburr or chamfer one end of the bar or tube material. The processing mechanism includes: a grinding disc, set on one side of the fixed adjustment mechanism; a linkage, installed on the base and transmission component, with the grinding disc fixed on the linkage; and a rotating component, installed on the base, cutting component, and linkage.

[0008] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the cutting component includes: a drive shaft rotating on a frame, a cutting disc detachably fixed to one end of the drive shaft, a motor fixed to the frame, a first pulley fixed to the surface of the motor output shaft, a second pulley fixed to the other end of the drive shaft, and a first belt sleeved on the surfaces of the first and second pulleys.

[0009] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the transmission assembly includes: a bevel gear, a shaft end of a transmission mechanism fixed to the chuck to drive the movement of its three jaws, a ring body rotatably sleeved on the surface of a cylinder, a short rod fixed to the outer surface of the ring body, a circular gear ring fixed to one end of the short rod, a bevel gear ring fixed to one side of the circular gear ring and meshing with the bevel gear, and an unlocking component installed on the frame and linkage and cooperating with the circular gear ring.

[0010] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the unlocking component includes: a connecting plate fixed to one side of the frame; a long rod sliding on the connecting plate with one end mounted on a linkage; a circular gear fixedly sleeved on the surface of the long rod and cooperating with a circular gear ring; a handwheel fixed to one end of the long rod; a cylinder fixed to one side of the connecting plate and sleeved on the surface of the long rod; an electromagnet fixed to one side of the connecting plate and sleeved on the surface of the long rod; a permanent magnet fixedly sleeved on the surface of one end of the long rod and cooperating with the electromagnet; a ring rotating on the inner wall of the cylinder and sleeved on the surface of the long rod; and a spring sleeved on the surface of the long rod with both ends fixed between the permanent magnet and the surface of the ring.

[0011] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the drive assembly includes: a transmission component mounted on a cylinder and a frame; a drive component mounted on a base and a frame; and a round rod with both ends fixed between the transmission component and the drive component. The transmission component includes: a worm gear fixedly sleeved on one end surface of the cylinder; a worm mounted on one side of the frame via a bearing seat, with one end fixed to one end of the round rod; a timing disc fixed to one end of the worm; and a timing belt sleeved on the surface of the timing disc.

[0012] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the driving component includes: a support frame, fixed to the top of the base, with one end of the round rod rotatably connected to the support frame; a rotating sleeve, rotating on the support frame; a ratchet, with its inner ring fixedly sleeved on the surface of the rotating sleeve; a second bevel gear, fixedly sleeved on the outer ring surface of the ratchet; and a third bevel gear, fixed to one end of the round rod and meshing with the second bevel gear.

[0013] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the driving component further includes: a driving frame fixed to one side of the frame via a support rod; a guide hole formed on the driving frame; a vertical rod sliding within the rotating sleeve; a fixing bolt passing through the upper end of the vertical rod and threadedly connected to the vertical rod; a guide post fixed to one end of the fixing bolt and sliding within the guide hole; a guide groove formed on the surface of the vertical rod; a ball bearing embedded in the inner wall of the rotating sleeve and sliding within the guide groove; a connecting block fixed to the upper end of the vertical rod; and a hexagonal rod sliding on the support frame, with its upper end fixed to the bottom of the connecting block.

[0014] As a preferred embodiment of the precision cutting device for mold parts production described in this invention, the linkage includes: a vertical plate fixed to the top of the base, a guide rod fixed to one side of the vertical plate, a movable plate slidably sleeved on the surface of the guide rod and rotatably connected to one end of the long rod, a horizontal cylinder rotatably mounted on the movable plate, a guide tube slidably inside the horizontal cylinder, and a fixed plate slidably sleeved on one end surface of the guide tube, with the grinding disc fixed to one side by screws.

[0015] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the linkage further includes: a slide rod that slides inside a guide tube; a stop block that is fixed to one end of the slide rod and abuts against one side of the grinding disc; two springs that are sleeved on the surface of one end of the slide rod and whose two ends are respectively fixed between the surface of the stop block and the surface of the guide tube; a rotating rod that rotates on a vertical plate, one end of which slides inside a horizontal cylinder and the other end is installed on the rotating component; and a fastening bolt that is threadedly connected to one end of the horizontal cylinder and abuts against the guide tube.

[0016] As a preferred embodiment of the precision cutting device for mold component production described in this invention, the rotating component includes: a reinforcing plate fixed to the top of the base; a crossbar rotating on the reinforcing plate and the bracket; a third belt pulley fixed to the surface of the motor output shaft; a fourth belt pulley fixedly sleeved on the surface of the crossbar; a second belt, transmission sleeved on the surfaces of the third and fourth belt pulleys; a fifth belt pulley fixed to one end of the crossbar; a sixth belt pulley fixed to one end of the rotating rod; and a third belt, transmission sleeved on the surfaces of the fifth and sixth belt pulleys.

[0017] The beneficial effects of this invention are as follows: This device integrates cutting, automatic indexing and repositioning, and end face deburring functions. One machine can complete the cutting of mold accessory bars and tubes and the finishing of one end face, eliminating the need for secondary grinding, greatly shortening the production process and improving processing efficiency. It achieves automatic mechanical indexing by relying on the swing stroke of the frame, eliminating the need for manual flipping and alignment. The multi-point even cutting accuracy is high, effectively avoiding problems such as cutting blade jamming and workpiece edge chipping. It is suitable for the mass production of thick-walled and large-diameter mold tubes. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a scene illustration of a precision cutting device used in the production of mold parts.

[0020] Figure 2 Another perspective view of a precision cutting device used in the production of mold parts.

[0021] Figure 3 A partial sectional perspective view of a precision cutting device used in the production of mold parts.

[0022] Figure 4 A three-dimensional view of the frame and support structure of a precision cutting device used in the production of mold parts.

[0023] Figure 5A partial sectional perspective view of the cylinder and worm gear of a precision cutting device used in the production of mold parts.

[0024] Figure 6 A three-dimensional view of the long rod and chuck of a precision cutting device used in the production of mold parts.

[0025] Figure 7 A perspective view of the drive frame and support frame of a precision cutting device used in the production of mold parts.

[0026] Figure 8 A partial sectional perspective view of the rotating sleeve and support frame of a precision cutting device used in mold component production.

[0027] Figure 9 This is a partial cross-sectional plan view of the ratchet of a precision cutting device used in the production of mold parts.

[0028] In the diagram: 1. Cutting mechanism; 11. Base; 12. Bracket; 13. Rotating rod; 14. Frame; 15. Cutting piece; 16. Handle; 2. Fixing and adjusting mechanism; 21. Frame; 22. Cylinder; 23. Chuck; 24. Transmission assembly; 25. Drive assembly; 26. Cover one; 27. Cover two; 3. Processing mechanism; 31. Grinding disc; 32. Linking component; 33. Rotating component; 151. Drive shaft; 152. Cutting disc; 153. Motor; 154. Leather 155. Belt pulley 1; 156. Belt 1; 241. Bevel gear 1; 242. Ring body; 243. Short rod; 244. Circular gear ring; 245. Bevel gear ring; 246. Unlocking component; 2461. Connecting plate; 2462. Long rod; 2463. Circular gear; 2464. Handwheel; 2465. Cylinder body; 2466. Electromagnet; 2467. Permanent magnet; 2468. Circular ring; 2469. Spring 1; 251. Transmission component; 252. Round rod; 253. Drive component; 2511. Worm gear; 2512. Worm; 2513. Synchronous disc; 2514. Synchronous belt; 2531. Support frame; 2532. Sleeve; 2533. Ratchet; 2534. Bevel gear II; 2535. Bevel gear III; 2536. Drive frame; 2537. Guide hole; 2538. Vertical rod; 2539. Fixing bolt; 25310. Guide post; 25311. Guide groove; 25312. Ball bearing; 25313. Connecting block; 2 5314, Hexagonal rod; 321, Vertical plate; 322, Guide rod; 323, Movable plate; 324, Horizontal cylinder; 325, Guide tube; 326, Fixed plate; 327, Sliding rod; 328, Abutment block; 329, Spring II; 3210, Rotating rod; 3211, Fastening bolt; 331, Reinforcing plate; 332, Horizontal bar; 333, Belt pulley III; 334, Belt pulley IV; 335, Belt II; 336, Belt pulley V; 337, Belt pulley VI; 338, Belt III. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1, referring to Figures 1-3 This is the first embodiment of the present invention. This embodiment provides a precision cutting device for the production of mold parts. The precision cutting device for the production of mold parts includes a cutting mechanism 1, a fixing and adjusting mechanism 2, and a processing mechanism 3.

[0033] Specifically, the cutting mechanism 1 is fixedly installed and used for cutting bar or tube materials during the production of mold parts. It includes a base 11, a bracket 12 fixed to the bottom of the base 11, a rotating rod 13 rotating on the bracket 12, a frame 14 fixedly sleeved on the surface of the rotating rod 13, and a cutting component 15 installed on the frame 14.

[0034] The cutting mechanism 1 cuts bar or tube material into guide pillars, ejector pins, or guide sleeves required for mold accessories. There are two supports 12. The rotating rod 13 is rotatably connected to the support 12 through bearings. The cutting part 15 is an existing belt-type disc cutting machine, which is prior art. The working principle of this part is also prior art, which can be clearly understood by those skilled in the art and will not be described in detail here. A limit rod is provided on the frame 14, which is not shown in the attached figure. This rod keeps the rotation of one end of the frame 14 within a certain range and prevents excessive rotation, so that the cutting disc 152 contacts the device structure and plays a protective role. This is prior art, which can be clearly understood by those skilled in the art.

[0035] Specifically, the fixing and adjusting mechanism 2 is installed on the cutting mechanism 1 and is used to clamp and fix the bar or pipe material during cutting, as well as to rotate and adjust the cutting position. Before cutting, the fixing and adjusting mechanism 2 centers and clamps the bar or pipe material, and at the same time, during the process of lifting the frame 14 and then pressing it down, it automatically rotates and adjusts the circumferential cutting position of the pipe or bar material, which is suitable for multi-point even cutting of large-diameter thick-walled pipes.

[0036] Specifically, the fixed adjustment mechanism 2 includes: a frame 21 fixed on the base 11, a cylinder 22 rotating on the frame 21, and a chuck 23 fixed to one end of the cylinder 22 and communicating with it, used for clamping and fixing bar or tube materials. There are two frames 21, two cylinders 22, and two chucks 23, which are symmetrically distributed. The frame 21 provides an installation reference for the cylinder 22, the chuck 23, and various transmission components. The cylinder 22 is rotatably connected to the frame 21 through bearings. The chuck 23 is a three-jaw chuck, which is existing technology and can be clearly understood by those skilled in the art, so it will not be described in detail here. It realizes the centering and clamping of the ends of the mold accessory bar or tube material, coaxial limit, and prevents cutting vibration and cut deviation.

[0037] Specifically, the transmission component 24 is installed on the frame 21, cylinder 22 and chuck 23, and is used to drive the chuck 23 to clamp and release bar or tube materials. The transmission component 24 drives the jaws on the chuck 23 to retract and clamp or release the material synchronously, so as to realize automatic clamping and unlocking of workpieces.

[0038] Specifically, the drive assembly 25 is installed on the frame 14, base 11, frame 21, and cylinder 22. It is used to rotate the cylinder 22 and chuck 23 under the downward rotation of the frame 14 to adjust the cutting position of thicker diameter bars. The drive assembly 25 uses part of the swing stroke of the frame 14 in the early stage of the downward rotation and cutting as a power source. During the downward rotation and cutting process of the frame 14, it synchronously drives the cylinder 22 and chuck 23 to rotate the workpiece indexing and automatically switches the circumferential cutting station. There is no need for manual flipping and alignment. It is suitable for multi-point even cutting of large diameter thick-walled pipes and bars, avoiding the situation where the cutting disc 152 is stuck when cutting to the bottom in one go. Small diameters can be cut in one or two cuts, depending on the actual situation.

[0039] Specifically, the processing mechanism 3 is installed on the cutting mechanism 1 and the transmission assembly 24. It is used to deburr or chamfer one end of the bar or tube. The processing mechanism 3 automatically deburrs and chamfers the end of the cut section of the bar or tube, eliminating the need for subsequent secondary machining. It can process the end face of the bar or tube that was cut last time during the current cutting process, and can be used as a deburring and chamfering device when no cutting operation is required.

[0040] Specifically, the processing mechanism 3 includes a grinding disc 31, which is set on one side of the fixed adjustment mechanism 2. The grinding disc 31 rotates to grind and remove burrs from the cross-section of the workpiece. The grinding disc 31 has multiple specifications, which can be selected according to the processing conditions of the workpiece.

[0041] Specifically, the linkage 32 is installed on the base 11 and the transmission assembly 24, and the grinding disc 31 is fixed on the linkage 32. The rotating part 33 is installed on the base 11, the cutting part 15 and the linkage 32. The linkage 32 enables the grinding disc 31 to move in conjunction with the transmission assembly 24 to achieve lateral feeding and fine position adjustment, adapting to the grinding of the end face of workpieces of different specifications. The rotating part 33 is synchronously driven by the motor 153 of the cutting part 15, which drives the linkage 32 to rotate the grinding disc 31, realizing the sharing of cutting power and eliminating the need for an additional power source.

[0042] The device is also equipped with an external dust collection structure, which can collect the dust generated during cutting and deburring. This is existing technology and can be clearly understood by those skilled in the art, so it will not be described in detail here.

[0043] Example 2, refer to Figures 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0044] Specifically, the cutting component 15 includes: a drive shaft 151, which rotates on the frame 14. The drive shaft 151 is rotatably connected to the frame 14 via bearings. The drive shaft 151 provides rotational support for the cutting disc 152. The cutting disc 152 is detachably fixed to one end of the drive shaft 151 for easy replacement after wear and adaptation to cutting workpieces of different materials. The motor 153 is fixed to the frame 14. A first pulley 154 is fixed to the surface of the output shaft of the motor 153. A second pulley 155 is fixed to the other end of the drive shaft 151. A first belt 156 is sleeved on the surfaces of the first pulley 154 and the second pulley 155. With the cooperation of the first pulley 154 and the second pulley 155, the first belt 156 stably transmits the torque of the motor 153 to the drive shaft 151 and the cutting disc 152, achieving high-speed rotation. Then, one end of the frame 14 is rotated and pressed down, causing the cutting disc 152 to rotate and press down to cut the workpiece.

[0045] Specifically, the transmission assembly 24 includes: a bevel gear 241, fixed to the shaft end of the transmission mechanism that drives the movement of its three jaws on the chuck 23; a ring 242, rotatably sleeved on the surface of the cylinder 22, the ring 242 being rotatably connected to the cylinder 22 via bearings and capable of circumferential rotation relative to the cylinder 22; short rods 243, fixed to the outer surface of the ring 242, the number of short rods 243 being several, arranged in a circumferential array, serving as a connection, support, and transmission element; a circular gear ring 244, fixed to one end of the short rods 243; a bevel gear ring 245, fixed to one side of the circular gear ring 244 and meshing with the bevel gear 241; and an unlocking element 246, mounted on the frame 21 and the linkage 32, and cooperating with the circular gear ring 244.

[0046] With the cooperation of bevel gear 241, the bevel gear ring 245 converts the circumferential rotation into the torque driven by the jaws on the chuck 23. The unlocking component 246 is connected to the motor 153 in the same circuit. When bar or tube material needs to be clamped without power, the workpiece is passed through the two cylinders 22 and the chuck 23. The unlocking component 246 is manually operated to drive the rotation of the circular gear ring 244 and the bevel gear ring 245, which in turn causes the bevel gear 241 to rotate, and the chuck 23 to move to clamp and fix the workpiece.

[0047] When cutting is required, the motor 153 is energized simultaneously with the unlocking component 246, causing the unlocking component 246 to disengage from the circular gear ring 244 and lose its engagement. This does not affect the subsequent multi-point even cutting rotation operation of large-diameter, thick-walled workpieces. At the same time, it prevents the circular gear ring 244 and the bevel gear ring 245 from rotating relative to the bevel gear 241, and does not unlock the chuck 23 from clamping and fixing the workpiece. Only when the motor 153 is de-energized and the cutting disc 152 stops rotating rapidly, can the chuck 23 be freely adjusted and the workpiece removed and installed under the action of the unlocking component 246 being de-energized and manual operation. This avoids the chuck 23 from accidentally loosening during the cutting process, ensuring the clamping rigidity during the cutting process and realizing the circuit timing interlock to prevent the workpiece from flying out or the cut from being skewed due to misoperation, thus greatly improving the safety and cutting accuracy of the equipment.

[0048] Specifically, the unlocking component 246 includes: a connecting plate 2461, fixed to one side of the frame 21, with two connecting plates 2461 providing a fixed mounting reference for sliding, magnetic, and rotating components; a long rod 2462, sliding on the connecting plate 2461, with one end mounted on the linkage 32, the long rod 2462 capable of sliding back and forth axially and rotating circumferentially; a circular gear 2463, fixedly sleeved on the surface of the long rod 2462 and cooperating with the circular gear ring 244; a handwheel 2464, fixed to one end of the long rod 2462; and a cylinder 2. 465, fixed to one side of the connecting plate 2461 and sleeved on the surface of the long rod 2462; electromagnet 2466, fixed to one side of the connecting plate 2461 and sleeved on the surface of the long rod 2462; permanent magnet 2467, fixedly sleeved on one end of the long rod 2462 and cooperating with electromagnet 2466; ring 2468, rotating on the inner wall of the cylinder 2465 and sleeved on the surface of the long rod 2462; spring 2469, sleeved on the surface of the long rod 2462, with both ends fixed between the surfaces of permanent magnet 2467 and ring 2468.

[0049] When the spur gear 2463 meshes with the spur gear ring 244, the spur gear 2463 drives the spur gear ring 244 and the bevel gear ring 245 to rotate synchronously via the rotation of the long rod 2462, thereby controlling the opening and closing of the jaws on the chuck 23. When the spur gear 2463 and the spur gear ring 244 are not meshed, rotating the long rod 2462 will not cause the spur gear ring 244 to rotate. The handwheel 2464 can be manually rotated or the long rod 2462 can be pushed and pulled to achieve manual clamping, unloading, and fine adjustment in the power-off state. There are two situations when the power is off: First, when the long rod 2462 and the spur gear 2463 are meshing... In the first case, the sprocket 2463 moves back directly and meshes with the gear ring 244. At this time, the handwheel 2464 can be rotated to freely adjust the tightness of the chuck 23 to complete unloading, loading, and specification change. In the second case, when the long rod 2462 and the sprocket 2463 are reset, the sprocket 2463 moves back directly and contacts the gear ring 244 without meshing. It is necessary to manually operate the fine-tuning handwheel 2464 and the long rod 2462 to reset the sprocket 2463 and mesh with the gear ring 244. At this time, the handwheel 2464 can be rotated to freely adjust the tightness of the chuck 23 to complete unloading, loading, and specification change.

[0050] Electromagnet 2466 and motor 153 are connected to the same control circuit and are energized and de-energized synchronously with motor 153. Permanent magnet 2467 and the repulsive end face of electromagnet 2466 are set facing each other. When energized, the repulsive forces cooperate to generate axial thrust, causing permanent magnet 2467 and long rod 2462 to move, disengaging spherical gear 2463 from the meshing of spherical gear ring 244. Circular ring 2468 is rotatably connected to cylinder 2465 through bearing. Spring 2469 provides elastic restoring force when electromagnet 2466 is de-energized, driving permanent magnet 2467, long rod 2462 and spherical gear 2463 to move backward, providing force for the meshing of spherical gear 2463 and spherical gear ring 244.

[0051] When motor 153 is powered on, electromagnet 2466 is simultaneously energized, generating a repulsive force that pushes permanent magnet 2467 to overcome the pre-tightening force of spring 2469, pulling long rod 2462 axially to slide, causing spherical gear 2463 to disengage from the gear ring 244, ensuring that chuck 23 will not loosen throughout the cutting process, guaranteeing the coaxiality and flatness of the cut bar and tube. After cutting, motor 153 is de-energized, electromagnet 2466 is simultaneously de-energized, the repulsive force disappears, spring 2469 rebounds and pushes long rod 2462 to reset, spherical gear 2463 retracts and engages with gear ring 244, at which point handwheel 2464 can be rotated to freely adjust the tightness of chuck 23, completing unloading, loading, and specification changing.

[0052] Example 3, referring to Figures 2-9 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0053] Specifically, the drive assembly 25 includes: a transmission component 251, mounted on the cylinder 22 and the frame 21, which receives power from the upper stage and drives the cylinder 22 to rotate circumferentially; a drive component 253, mounted on the base 11 and the frame 14, which generates mechanical power by rotating and pressing down on the frame 14; and a round rod 252, whose two ends are fixed between the transmission component 251 and the drive component 253, which transmits torque laterally to the transmission component 251 through the round rod 252.

[0054] The transmission component 251 includes: a worm gear 2511, which is fixedly sleeved on one end surface of the cylinder 22; a worm 2512, which is installed on one side of the frame 21 through a bearing seat, and one end is fixed to one end of the cylindrical rod 252; a timing disc 2513, which is fixed to one end of the worm 2512; and a timing belt 2514, which is driven and sleeved on the surface of the timing disc 2513.

[0055] There are two worm gears 2512, two worm wheels 2511, and two synchronizer discs 2513, which are symmetrically distributed. The worm wheel 2511 and the worm gear 2512 have a self-locking function, so the angle does not deviate during cutting. The cylinder 22 and the chuck 23 will not rotate after the full circumference indexing adjustment. The worm wheel 2511, the cylinder 22 and the chuck 23 can only rotate when the worm gear 2512 rotates actively. This is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. The synchronizer disc 2513 and the synchronizer belt 2514 realize the synchronous linkage of the left and right sets of worm gears 2512, ensuring that the front and rear chucks 23 rotate synchronously and are aligned.

[0056] The output of the drive component 253 is transmitted to the worm gear 2512 via the round rod 252. The worm gear 2512 drives the worm wheel 2511 to decelerate and rotate, which drives the cylinder 22, chuck 23 and the clamped workpiece to rotate synchronously. The left and right sets of synchronous discs 2513 are linked with the synchronous belt 2514 to ensure that the rotation angle of the front and rear chucks 23 is consistent and the circumference of the workpiece is accurately aligned, which meets the requirements of evenly dividing and multi-point cutting of thick-walled mold tubes or bars.

[0057] Specifically, the drive component 253 includes: a support frame 2531, fixed to the top of the base 11, with one end of a round rod 252 rotatably connected to the support frame 2531, the round rod 252 being rotatably connected to the support frame 2531 via a damping bearing; a rotating sleeve 2532, rotating on the support frame 2531, the rotating sleeve 2532 being rotatably connected to the support frame 2531 via a bearing; a ratchet 2533, the inner ring of which is fixedly fitted onto the surface of the rotating sleeve 2532; a second bevel gear 2534, fixedly fitted onto the outer ring surface of the ratchet 2533; and a third bevel gear 2535, fixed to one end of the round rod 252 and meshing with the second bevel gear 2534.

[0058] The support frame 2531 provides a stable mounting point for the rotating sleeve 2532 and gear components. The ratchet 2533 rotates synchronously with the rotating sleeve 2532, and has unidirectional transmission and anti-reverse function. Utilizing the unidirectional transmission characteristic of the ratchet 2533, when the frame 14 presses down the non-cutting front stroke, the ratchet 2533 rotates in one direction. Through the reversing transmission of the second bevel gear 2534 and the third bevel gear 2535, the power is transmitted to the round rod 252, which in turn causes the worm gear 2512 to rotate, thereby causing the worm gear 2511, the cylinder 22, the chuck 23 and the workpiece to rotate. When pressing down the middle non-cutting stroke and the cutting section, the ratchet 2533 stops rotating, so the workpiece stops rotating and the adjustment is completed. During the return stroke, the idle rotation does not cause the workpiece to reverse, ensuring that the workpiece accurately rotates one station each time the non-cutting front stroke is pressed down, realizing intermittent automatic repositioning cutting.

[0059] Specifically, the drive component 253 also includes: a drive frame 2536, fixed to one side of the frame 14 by a support rod; a guide hole 2537, formed on the drive frame 2536, the guide hole 2537 being divided into three parts, with arc-shaped portions at both ends and an inclined portion in the middle; a vertical rod 2538, sliding within the rotating sleeve 2532; a fixing bolt 2539, passing through the upper end of the vertical rod 2538 and threadedly connected to the vertical rod 2538; and a guide post 25310, fixed to the fixing bolt 2539. The guide groove 25311 is formed on the surface of the vertical rod 2538 and is divided into three parts: vertical parts at both ends and a spiral part in the middle. The ball bearing 25312 is embedded in the inner wall of the rotating sleeve 2532 and slides in the guide groove 25311. The connecting block 25313 is fixed to the upper end of the vertical rod 2538. The hexagonal rod 25314 slides on the support frame 2531 and its upper end is fixed to the bottom of the connecting block 25313.

[0060] The drive frame 2536 rotates synchronously with the rotation and downward pressure of the frame 14. When the drive frame 2536 rotates, the guide post 25310 moves independently relative to the arc-shaped part of the guide hole 2537. The fixing bolt 2539 and the vertical rod 2538 will not move up and down. When the guide post 25310 moves in the inclined part of the guide hole 2537, the fixing bolt 2539 and the vertical rod 2538 can move up and down. With the setting of the fixing bolt 2539, when it is not necessary to rotate the workpiece for multi-point cutting, the fixing bolt 2539 can be rotated to make the guide post 25310 disengage from the guide hole 2537. This prevents the ratchet 2533 and the bevel gear 2534 from rotating when the frame 14 is pressed down, thus preventing the chuck 23 and the workpiece from being rotated and adjusted. This facilitates one-time cutting of small diameters.

[0061] When it is necessary to evenly divide or cut thick-walled mold tubes or bars into multiple points, the guide post 25310 is inserted into the guide hole 2537 by operating the fixing bolt 2539. The ball 25312 rotates on the inner wall of the rotating sleeve 2532. When the vertical rod 2538 moves up and down, the rotating sleeve 2532 will not rotate when the ball 25312 moves alone relative to the vertical part of the guide groove 25311. When the ball 25312 moves in the spiral part of the guide groove 25311, the rotating sleeve 2532 can rotate. The connecting block 25313 and the vertical rod 2538 are guided and limited by the hexagonal rod 25314, so that the vertical rod 2538 will not rotate when moving up and down.

[0062] One end of the frame 14 rotates and presses down, causing the drive frame 2536 to swing synchronously. The guide post 25310 travels along the trajectory of the guide hole 2537, driving the vertical rod 2538 to move upward. The vertical rod 2538 cooperates with the ball 25312 through the guide groove 25311, converting the linear upward motion into the unidirectional rotational motion of the rotating sleeve 2532 and the ratchet 2533, causing the bevel gear 2534 to rotate, thereby causing the bevel gear 2535, the round rod 252 and the worm gear 2512 to rotate, realizing the rotational adjustment of the chuck 23 and the workpiece, and achieving automatic indexing once before each cut. During the process of the frame 14 and the cutting disc 152 rotating upward and resetting after cutting, although the rotating sleeve 2532 can rotate, the bevel gear 2535 will not rotate under the unidirectional transmission of the ratchet 2533, so the chuck 23 and the workpiece will not rotate, avoiding the situation where the workpiece rotates and collides with the cutting disc 152, causing it to seize or break.

[0063] Example 4, refer to Figures 1-9 This is the fourth embodiment of the present invention, which is based on the first three embodiments.

[0064] Specifically, the linkage 32 includes: a vertical plate 321 fixed to the top of the base 11, a guide rod 322 fixed to one side of the vertical plate 321, a movable plate 323 slidably sleeved on the surface of the guide rod 322 and rotatably connected to one end of the long rod 2462, a horizontal cylinder 324 rotatably on the movable plate 323 and rotatably connected to the movable plate 323 through a bearing, a guide tube 325 slidably inside the horizontal cylinder 324, and a fixed plate 326 slidably sleeved on one end surface of the guide tube 325, with the grinding disc 31 fixed to one side of it by screws.

[0065] The guide rod 322 and the guide tube 325 have hexagonal cross-sections. This design prevents the movable plate 323 from rotating when it moves on the guide rod 322, while allowing the guide tube 325 to move within the horizontal cylinder 324. Simultaneously, the rotation of the horizontal cylinder 324 can drive the guide tube 325 to rotate. One end of the long rod 2462 is rotatably connected to the movable plate 323 via a bearing, allowing the movable plate 323 to move axially in conjunction with the long rod 2462. The end of the guide tube 325 that slides on the fixed plate 326 has an integrally formed protrusion to prevent the fixed plate 326 from detaching from the guide tube 325 when it slides on the guide tube 325.

[0066] Specifically, the linkage 32 also includes: a slide rod 327 that slides inside the guide tube 325, with one end of the slide rod 327 extending to the outside of the guide tube 325; a stop block 328 that is fixed to one end of the slide rod 327 and abuts against one side of the grinding disc 31; a spring 329 that is sleeved on the surface of one end of the slide rod 327 and has its two ends fixed between the surface of the stop block 328 and the surface of the guide tube 325, respectively; a rotating rod 3210 that rotates on the vertical plate 321, with one end sliding inside the horizontal cylinder 324 and the other end installed on the rotating member 33; and a fastening bolt 3211 that is threadedly connected to one end of the horizontal cylinder 324 and abuts against the guide tube 325.

[0067] Spring 329 provides elastic preload, allowing the grinding disc 31 to flexibly conform to the workpiece cross-section, avoiding wear or chipping caused by rigid pressure. The rotating rod 3210 slides within the horizontal cylinder 324 with a hexagonal cross-section, while the end rotating on the vertical plate 321 via a bearing has a circular cross-section. This configuration allows the horizontal cylinder 324 to move on the rotating rod 3210, which in turn rotates under the drive of the rotating component 33, thereby driving the rotation of the horizontal cylinder 324 and the guide tube 325. With the fastening bolt 3211, depending on whether the workpiece needs deburring or chamfering, after the guide tube 325 is adjusted in position within the horizontal cylinder 324, tightening it can press down on the guide tube 325 to lock its length, thereby positioning the initial position of the fixed plate 326 and the grinding disc 31.

[0068] When the electromagnet 2466 is energized, it drives the permanent magnet 2467 and the long rod 2462 to move, which in turn drives the movable plate 323 to move. This causes the horizontal cylinder 324, the guide tube 325, the fixed plate 326, the slide rod 327, the abutment block 328, the second spring 329, and the grinding disc 31 to move. After the grinding disc 31 contacts the end face of the workpiece, the movement of the horizontal cylinder 324 and the guide tube 325 compresses the second spring 329, which in turn applies pressure to the abutment block 328, making the grinding disc 31 flexibly fit the cross-section of the workpiece. Under the action of the subsequent rotation of the rotating rod 3210, the horizontal cylinder 324, the guide tube 325, the fixed plate 326, and the grinding disc 31 rotate, deburring or chamfering the cross-section of the workpiece.

[0069] Specifically, the rotating component 33 includes: a reinforcing plate 331 fixed to the top of the base 11, a crossbar 332 rotating on the reinforcing plate 331 and the bracket 12, a third belt pulley 333 fixed to the surface of the output shaft of the motor 153, a fourth belt pulley 334 fixedly sleeved on the surface of the crossbar 332, a second belt 335 driven sleeved on the surfaces of the third belt pulley 333 and the fourth belt pulley 334, a fifth belt pulley 336 fixed to one end of the crossbar 332, a sixth belt pulley 337 fixed to one end of the rotating rod 3210, and a third belt 338 driven sleeved on the surfaces of the fifth belt pulley 336 and the sixth belt pulley 337. The crossbar 332 is rotatably connected to the reinforcing plate 331 and the bracket 12 respectively through bearings.

[0070] The motor 153 drives the cutting disc 152 to cut on one side, and drives the crossbar 332 to rotate via belt pulley 333, belt pulley 235, and belt pulley 434 on the other side. Then, the rotating rod 3210 and the grinding disc 31 are driven to rotate synchronously by belt pulley 536, belt pulley 338, and belt pulley 637. This allows one motor 153 to supply dual power for cutting and deburring at the same time, eliminating the need for a separate grinding motor.

[0071] A handle 16 is fixed to one end of the frame 14. The handle 16 facilitates manual pressing down to operate the frame 14, allowing the cutting disc 152 to be adjusted in position. A cover 26 is fixed to the base 11. A cover 27 is fixed to one side of the cover 26. A cover 3 is fixed to one side of the vertical plate 321. Covers 26, 27, and 3 provide dustproof, iron filings-proof, and safety protection for the internal transmission belts, gears, and rotating parts, extending the service life of the mechanism. They also provide corresponding sealing treatment to prevent iron filings and dust from affecting the structural transmission. This is existing technology, which is clearly known to those skilled in the art and will not be described in detail here. The springs are all made of 65Mn spring steel, quenched and shaped, with uniform elasticity and resistance to fatigue deformation, which can meet the requirements of the device for more than 10,000 reciprocating uses.

[0072] In use, the bar or tube material used for the mold accessories is first placed horizontally between the two sets of three-jaw chucks 23. The transmission component 24 is used in conjunction with the bevel gear meshing transmission. The jaws are manually adjusted to close, achieving centering and coaxial clamping of the workpiece. At the same time, the electromagnet 2466 is linked with the control circuit. After being energized, it pushes the long rod 2462 to slide axially, causing the circular gear 2463 to disengage from the circular gear ring 244. This achieves mechanical self-locking of the chuck 23 under cutting conditions, preventing loosening and offset during operation and ensuring clamping rigidity.

[0073] After the motor 153 is started, the cutting disc 152 is driven to rotate at high speed through pulleys and belt transmission. At the same time, multiple sets of pulleys are simultaneously driven to provide rotational power to the grinding disc 31. The operator presses down the handle 16, causing the frame 14 and the cutting disc 152 to swing downward around the rotating rod 13 to cut the workpiece in sections. During the downward swing, the frame 14 converts the swing stroke into linear motion of the vertical rod 2538 through the trajectory coordination of the drive frame 2536, guide post 25310 and vertical rod 2538. Then, through the spiral guidance of the guide groove 25311 and ball 25312, the rotating sleeve 2532 and ratchet 2533 are driven to rotate unidirectionally. Through the bevel gear set, worm gear 2511 and worm 2512, synchronous disk 2513 and synchronous belt 2514, the two cylinders 22 and chuck 23 are driven to rotate synchronously, realizing automatic indexing and repositioning of the workpiece.

[0074] Utilizing the unidirectional transmission characteristics of the ratchet 2533, the workpiece angle switching is completed only in the non-cutting section of the frame 14 during the downward movement. During the cutting and return phases, the machine idles without transmission, avoiding workpiece disturbance due to reverse rotation. This enables multi-point even segmented cutting of thick-walled bars and pipes, preventing cutting blade from seizing up and workpiece from chipping due to a single cut.

[0075] At the same time, during the synchronous cutting operation of the lower hem, the linkage 32 and the grinding disc 31 adaptively shift laterally with the long rod 2462. The grinding disc 31 maintains high-speed rotation under the belt drive and flexibly fits the workpiece cutting end face through the spring. Without the need for additional power source, deburring and chamfering are completed simultaneously. After the cutting is completed, the motor 153 stops, the electromagnet 2466 is de-energized and resets, the spherical gear 2463 re-meshes, and the chuck 23 can be manually released to unload the material. The whole process relies on mechanical linkage and circuit timing, without the need for manual repeated alignment and secondary transfer and grinding, and realizes continuous and automated completion of clamping, indexing, precise cutting and end face treatment.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A precision cutting device for mold component production, characterized in that: include, The cutting mechanism (1) is fixedly installed and used for cutting bar or tube materials during the production of mold parts. It includes a base (11), a bracket (12) fixed to the bottom of the base (11), a rotating rod (13) rotating on the bracket (12), a frame (14) fixedly sleeved on the surface of the rotating rod (13), and a cutting component (15) installed on the frame (14). The fixing and adjusting mechanism (2) is installed on the cutting mechanism (1) and is used to clamp and fix the bar or tube material during cutting, and to rotate and adjust the cutting position. The fixing and adjusting mechanism (2) includes: a frame (21) fixed on the base (11), a cylinder (22) rotating on the frame (21), a chuck (23) fixed to one end of the cylinder (22) and connected to it, used to clamp and fix the bar or tube material, a transmission component (24) installed on the frame (21), the cylinder (22) and the chuck (23), used to drive the chuck (23) to clamp and release the bar or tube material, and a drive component (25) installed on the frame (14), the base (11), the frame (21) and the cylinder (22), used to rotate the cylinder (22) and the chuck (23) under the downward rotation of the frame (14) to adjust the cutting position of the thicker diameter bar material. The processing mechanism (3) is installed on the cutting mechanism (1) and the transmission assembly (24) for deburring or chamfering one end of the bar or tube. The processing mechanism (3) includes: a grinding disc (31) set on one side of the fixed adjustment mechanism (2), a linkage (32) installed on the base (11) and the transmission assembly (24), and the grinding disc (31) is fixed on the linkage (32), and a rotating part (33) installed on the base (11), the cutting part (15) and the linkage (32).

2. The precision cutting device for mold component production as described in claim 1, characterized in that: The cutting component (15) includes: a drive shaft (151) that rotates on the frame (14), a cutting disc (152) that is detachably fixed to one end of the drive shaft (151), a motor (153) that is fixed to the frame (14), a first pulley (154) that is fixed to the output shaft surface of the motor (153), a second pulley (155) that is fixed to the other end of the drive shaft (151), and a first belt (156) that is sleeved on the surfaces of the first pulley (154) and the second pulley (155).

3. The precision cutting device for mold component production as described in claim 1 or 2, characterized in that: The transmission assembly (24) includes: a bevel gear (241), fixed to the shaft end of the transmission mechanism that drives the three jaws of the chuck (23) to move; a ring (242), rotatably sleeved on the surface of the cylinder (22); a short rod (243), fixed to the outer surface of the ring (242); a circular gear ring (244), fixed to one end of the short rod (243); a bevel gear ring (245), fixed to one side of the circular gear ring (244) and meshing with the bevel gear (241); and an unlocking component (246), installed on the frame (21) and the linkage component (32) and cooperating with the circular gear ring (244).

4. The precision cutting device for mold component production as described in claim 3, characterized in that: The unlocking component (246) includes: a connecting plate (2461) fixed to one side of the frame (21); a long rod (2462) sliding on the connecting plate (2461) and having one end mounted on the linkage (32); a spherical gear (2463) fixedly sleeved on the surface of the long rod (2462) and cooperating with the spherical gear ring (244); a handwheel (2464) fixed to one end of the long rod (2462); and a cylinder (2465) fixed to one side of the connecting plate (2461) and sleeved on the surface of the long rod (2462). An electromagnet (2466) is fixed to one side of a connecting plate (2461) and sleeved on the surface of a long rod (2462). A permanent magnet (2467) is fixedly sleeved on one end of the long rod (2462) and cooperates with the electromagnet (2466). A ring (2468) rotates on the inner wall of a cylinder (2465) and is sleeved on the surface of the long rod (2462). A spring (2469) is sleeved on the surface of the long rod (2462) and its two ends are fixed between the surfaces of the permanent magnet (2467) and the ring (2468).

5. The precision cutting device for mold component production as described in claim 1 or 2, characterized in that: The drive assembly (25) includes: a transmission component (251) mounted on the cylinder (22) and the frame (21), a drive component (253) mounted on the base (11) and the frame (14), and a round rod (252) whose two ends are fixed between the transmission component (251) and the drive component (253). The transmission component (251) includes: a worm gear (2511) fixedly sleeved on one end surface of the cylinder (22), a worm (2512) mounted on one side of the frame (21) through a bearing seat, and one end fixed to one end of the round rod (252), a timing disc (2513) fixed to one end of the worm (2512), and a timing belt (2514) sleeved on the surface of the timing disc (2513).

6. The precision cutting device for mold component production as described in claim 5, characterized in that: The driving component (253) includes: a support frame (2531) fixed to the top of the base (11), with one end of the round rod (252) rotatably connected to the support frame (2531), a rotating sleeve (2532) rotating on the support frame (2531), a ratchet (2533) with its inner ring fixedly sleeved on the surface of the rotating sleeve (2532), a second bevel gear (2534) fixedly sleeved on the outer ring surface of the ratchet (2533), and a third bevel gear (2535) fixed to one end of the round rod (252) and meshing with the second bevel gear (2534).

7. The precision cutting device for mold component production as described in claim 6, characterized in that: The driving component (253) further includes: a driving frame (2536), fixed to one side of the frame (14) by a support rod; a guide hole (2537) opened on the driving frame (2536); a vertical rod (2538) sliding inside the rotating sleeve (2532); a fixing bolt (2539) passing through the upper end of the vertical rod (2538) and threadedly connected to the vertical rod (2538); and a guide post (25310) fixed to the fixing bolt (2539). The end of the guide is slidable in the guide hole (2537), the guide groove (25311) is opened on the surface of the vertical rod (2538), the ball (25312) is embedded in the inner wall of the rotating sleeve (2532) and slides in the guide groove (25311), the connecting block (25313) is fixed to the upper end of the vertical rod (2538), and the hexagonal rod (25314) slides on the support frame (2531) and its upper end is fixed to the bottom of the connecting block (25313).

8. The precision cutting device for mold component production as described in claim 7, characterized in that: The linkage (32) includes: a vertical plate (321) fixed to the top of the base (11), a guide rod (322) fixed to one side of the vertical plate (321), a movable plate (323) slidably sleeved on the surface of the guide rod (322) and rotatably connected to one end of the long rod (2462), a horizontal cylinder (324) rotatably on the movable plate (323), a guide tube (325) slidably inside the horizontal cylinder (324), a fixed plate (326) slidably sleeved on one end of the guide tube (325), and a grinding disc (31) fixed to one side of it by screws.

9. The precision cutting device for mold component production as described in claim 4, characterized in that: The linkage (32) further includes: a slide rod (327) that slides inside the guide tube (325); a stop block (328) that is fixed to one end of the slide rod (327) and abuts against one side of the grinding disc (31); a second spring (329) that is sleeved on one end of the slide rod (327) and its two ends are respectively fixed between the surface of the stop block (328) and the surface of the guide tube (325); a rotating rod (3210) that rotates on the vertical plate (321), one end of which slides inside the horizontal cylinder (324) and the other end is installed on the rotating part (33); and a fastening bolt (3211) that is threaded to one end of the horizontal cylinder (324) and abuts against the guide tube (325).

10. The precision cutting device for mold component production as described in claim 9, characterized in that: The rotating component (33) includes: a reinforcing plate (331) fixed to the top of the base (11), a crossbar (332) rotating on the reinforcing plate (331) and the bracket (12), a third belt pulley (333) fixed to the surface of the output shaft of the motor (153), a fourth belt pulley (334) fixedly sleeved on the surface of the crossbar (332), a second belt (335) driven sleeved on the surfaces of the third belt pulley (333) and the fourth belt pulley (334), a fifth belt pulley (336) fixed to one end of the crossbar (332), a sixth belt pulley (337) fixed to one end of the rotating rod (3210), and a third belt (338) driven sleeved on the surfaces of the fifth belt pulley (336) and the sixth belt pulley (337).

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