Safety helmet cutting equipment

Abstract

The invention discloses a safety helmet profiling cutting device, comprising a cutting frame, a gantry bracket, a cutting mechanism, a rotating mechanism, and a clamping jig; the gantry bracket is fixedly mounted on a working table of the cutting frame, the cutting mechanism is mounted on the cutting frame and located in the gantry bracket, the rotating mechanism is mounted on the working table of the cutting frame and located on one side of the cutting mechanism, and the clamping jig is mounted on the rotating mechanism; since the product of the invention can be clamped in the clamping jig, the clamping jig is mounted on the rotating mechanism, and the product can be cut safely and efficiently through the cooperation of the rotating mechanism and the cutting mechanism.

Description

Technical Field

[0001] The invention relates to a profiling cutting device, in particular to a profiling cutting device for a safety helmet. Background Art

[0002] At present, composite helmets are generally cut by hand, water jet or laser. Due to the poor precision, high labor intensity, high risk and unstable cutting quality, manual cutting can easily cause problems in the assembly of helmet accessories. Even after the helmet is painted, it is not discovered until assembly, which causes the shell to be scrapped, resulting in high cost losses, affecting customer delivery time and unstable product quality. At the same time, manual cutting can easily cause wavy or jagged edges, and a lot of manpower is needed to smooth them out later, resulting in high labor and manufacturing costs, large dust, and high environmental protection costs for handling dust. This is how manual cutting is done. Water jet or laser cutting equipment is very expensive, costing 1 to 3 million yuan per set. Many small factories cannot afford it. The initial equipment manufacturing and debugging cycle is long, and the programming time for each product requires several tests. The programming of each product takes several hours, or even one or two days of debugging. The cutting accuracy also depends on the design, machining accuracy and installation accuracy of the helmet clamping fixture (because most of the fixtures for water jet and laser cutting use two positioning PIN points or a circle at the bottom for fixing, and rarely use an integral helmet fixture cover for fixing, so the fixing firmness depends on the design of the positioning PIN head taper and the lack of glue at the PIN point after the product is formed). In addition, some machines need to switch to different types of fixtures for different products, which can easily cause wear of the bolts, pins or holes of the fixing fixture, thereby causing installation deviations and affecting the installation accuracy. Summary of the invention

[0003] The purpose of the present invention is to provide a composite helmet profiling cutting device which is safe, efficient, economical and easy to operate.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] The present invention relates to a safety helmet profiling cutting device, comprising a cutting frame, a gantry bracket, a cutting mechanism, a rotating mechanism, and a clamping jig;

[0006] The gantry bracket is fixedly mounted on the working table of the cutting machine frame, the cutting mechanism is mounted on the cutting machine frame and is located in the gantry bracket, the rotating mechanism is mounted on the working table of the cutting machine frame and is located on one side of the cutting mechanism, and the clamping fixture is mounted on the rotating mechanism;

[0007] The clamping fixture includes a slide rail, a fixed base, a movable base, a fixed clamp body, a movable clamp body, a buckle, and a buckle fixing piece; the slide rail and the fixed base are both fixed on the rotating platform of the rotating mechanism, the lower end of the movable base is slidably connected to the slide rail and is opposite to the fixed base, the bottoms of the fixed clamp body and the movable clamp body are respectively fixed to the fixed base and the movable base, the movable clamp body can move relative to the fixed clamp body and abut against the fixed clamp body to form a clamping station for fixing the product, a buckle is installed on the fixed clamp body, and a buckle fixing piece is installed on the movable clamp body, the buckle can be buckled with the buckle fixing piece to fix the movable clamp body and the fixed clamp body together.

[0008] The cutting mechanism comprises a lifting cylinder, a tool holder base, a tool holder, a tool holder spring, a cutter head movable rod, a cutting motor, a tool chuck, a milling cutter, a cutting guide rod, and a movable rod spring; the cylinder body of the lifting cylinder and the tool holder base are both fixedly mounted on the working surface of the cutting machine frame, the rod end of the piston rod of the lifting cylinder is connected to the tool holder, the guide rod at the bottom of the tool holder is movably inserted into the guide groove of the tool holder base, a tool holder spring is provided between the top surface of the tool holder and the gantry bracket, the cutter head movable rod is movably mounted in the tool holder and can move in the horizontal direction, a movable rod spring is provided between the cutter head movable rod and the tool holder, the cutting motor is mounted on the cutter head movable rod, the inner end of the milling cutter is fixed to the output shaft of the cutting motor through the tool chuck, the outer end of the milling cutter extends toward the clamping fixture, the inner end of the cutting guide rod is fixed on the cutter head movable rod, the outer end of the cutting guide rod extends horizontally and is located below the milling cutter, the outer end head of the cutting guide rod is always pressed on the top surface of the clamping fixture and the outer end head of the cutting guide rod rests on the product to be cut.

[0009] The cutting mechanism includes a lifting cylinder, a tool holder, a lifting linear axis, a lifting linear bearing, a tool head cylinder, a cylinder push plate, a horizontal linear axis, a horizontal linear bearing, a bearing fixing plate, a cutting motor, a tool chuck, a milling cutter, and a cutting guide rod; the cylinder body of the lifting cylinder is fixedly installed on the top of the gantry bracket, the piston rod end of the lifting cylinder is downwardly connected to the tool holder, the tool holder is movably inserted into the lifting linear bearing through the lifting linear axis fixed thereon and moves in the vertical direction, the lifting linear bearing is installed on the top of the gantry bracket, the cylinder body of the tool head cylinder is fixedly installed on the tool holder, the piston rod end of the tool head cylinder is connected to the cylinder push plate, and pushes the cylinder push plate to move in the horizontal direction The cylinder push plate is movably connected to the horizontal linear shaft through a horizontal linear bearing fixed thereon, one end of the horizontal linear shaft is fixed on a bearing fixing plate, and the bearing fixing plate is fixedly installed on the tool holder; the cutting motor is fixed on the cylinder push plate, the inner end of the milling cutter is fixed to the output shaft of the cutting motor through a tool chuck, the outer end of the milling cutter extends to the clamping fixture, the inner end of the cutting guide rod is fixed to the cutting motor, the outer end of the cutting guide rod extends horizontally and is located below the milling cutter, the outer end head of the cutting guide rod is always pressed against the top surface of the clamping fixture and the outer end head of the cutting guide rod is against the product to be cut, and a rolling bearing is installed on the outer end head of the cutting guide rod.

[0010] The top surfaces of the fixed clamp body and the movable clamp body in the clamping fixture are both installed with metal blocks.

[0011] The rotating mechanism includes a variable frequency motor, a reducer, a transmission rod, a conversion gear, a rotating shaft, and a rotating platform; the output shaft of the variable frequency motor is connected to the reducer, and the output shaft of the reducer is connected to the rotating platform through the transmission rod, the conversion gear, and the rotating shaft and drives the rotating platform to rotate, and the rotating platform can be rotatably installed on the working table of the cutting frame.

[0012] The conversion gears are a pair of bevel gears.

[0013] The rotating mechanism may have two rotating platforms, and the clamping fixture may have two sets and be respectively mounted on the two rotating platforms of the rotating mechanism.

[0014] The rotating mechanism includes a variable frequency motor, a reducer, a rotating shaft, and a rotating platform; the output shaft of the variable frequency motor is connected to the reducer, the output shaft of the reducer is connected to the rotating platform through the rotating shaft and drives the rotating platform to rotate, and the rotating platform is rotatably installed on the working table of the cutting frame.

[0015] After adopting the above scheme, since the present invention includes a cutting frame, a gantry bracket, a cutting mechanism, a rotating mechanism, and a clamping jig, the product can be clamped in the clamping jig, and the clamping jig is installed on the rotating mechanism. Through the coordination of the rotating mechanism and the cutting mechanism, the product can be cut safely and efficiently. The present invention has a simple structure, low cost, and easy operation. The cutting accuracy is the same as that of water jet and laser equipment. There is no long machine debugging and procurement cycle, and there is no need to program for each product, and the debugging cycle is short.

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of a first embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of cutting materials of the present invention;

[0019] Figure 3 It is a top view of the cooperation between the movable base and the slide rail in the clamping fixture of the present invention;

[0020] Figure 4 It is a front view of the cooperation between the movable base and the slide rail in the clamping fixture of the present invention;

[0021] Figure 5 It is a front view of a second embodiment of the present invention. DETAILED DESCRIPTION

[0022] like Figure 1 , Figure 2 As shown, the first embodiment of a helmet profiling cutting device of the present invention comprises a cutting frame 1, a gantry support 2, a cutting mechanism 3, a rotating mechanism 4, and a clamping fixture 5.

[0023] The gantry bracket 2 is fixedly mounted on the working table of the cutting frame 1, the cutting mechanism 3 is mounted on the cutting frame 1 and located inside the gantry bracket 2, the rotating mechanism 4 is mounted on the working table of the cutting frame 1 and located on one side of the cutting mechanism 3, and the clamping fixture 5 is mounted on the rotating mechanism 4.

[0024] The cutting mechanism 3 includes a lifting cylinder 31, a tool holder base 32, a tool holder 33, a tool holder spring 34, a cutter head movable rod 35, a cutting motor 36, a tool chuck 37, a milling cutter 38, a cutting guide rod 39, a movable rod spring 310, and an air nozzle 311; the cylinder body of the lifting cylinder 31 and the tool holder base 32 are both fixedly mounted on the working surface of the cutting machine frame 1, the piston rod end of the lifting cylinder 31 is connected to the tool holder 33, the guide rod 331 at the bottom of the tool holder 33 is movably inserted into the guide groove 321 of the tool holder base 32, a tool holder spring 34 is provided between the top surface of the tool holder 33 and the gantry bracket 2, and the cutter head movable rod 35 is movably mounted It is installed in the tool holder 33 and can move in the horizontal direction. A movable rod spring 310 is provided between the tool head movable rod 35 and the tool holder 33. The cutting motor 36 is installed on the tool head movable rod 35. The inner end of the milling cutter 38 is fixed to the output shaft of the cutting motor 36 through the tool chuck 37. The outer end of the milling cutter 38 extends to the clamping fixture 5. The inner end of the cutting guide rod 39 is fixed to the tool head movable rod 35. The outer end of the cutting guide rod 39 extends in the horizontal direction and is located below the milling cutter 38. The outer end head of the cutting guide rod 39 is always pressed on the top surface of the clamping fixture 5 and the outer end head of the cutting guide rod 39 is against the product (helmet) 10 to be cut. The air nozzle 311 is clamped on the tool chuck 37 and the air outlet is aligned with the milling cutter 38.

[0025] The rotating mechanism 4 includes a variable frequency motor 41, a reducer 42, a transmission rod 43, a conversion gear 44, a rotating shaft 45, and a rotating platform 46; the output shaft of the variable frequency motor 41 is connected to the reducer 42, and the output shaft of the reducer 42 is connected to the rotating platform 46 through the transmission rod 43, the conversion gear 44, and the rotating shaft 45 and drives the rotating platform 46 to rotate, and the rotating platform 46 is rotatably installed on the working table of the cutting frame 1, and the conversion gear 44 is a pair of bevel gears. It should be noted that the rotating mechanism can also adopt a commercialized electric rotating table.

[0026] The clamping fixture 5 includes a slide rail 51, a fixed base 52, a movable base 53, a fixed clamp body 54, a movable clamp body 55, a buckle 56, and a buckle fixing piece 57; the slide rail 51 and the fixed base 52 are both fixed on the rotating platform 46 of the rotating mechanism 4, the lower end of the movable base 53 is slidably connected to the slide rail 51 and is opposite to the fixed base 52, the bottoms of the fixed clamp body 54 and the movable clamp body 55 are respectively fixed on the fixed base 52 and the movable base 53, the movable clamp body 55 can move relative to the fixed clamp body 54 and abut against the fixed clamp body 54 to form a clamping station for fixing the product, a buckle 56 is installed on the fixed clamp body 54, and a buckle 56 is installed on the movable clamp body 55, the buckle 56 can be buckled with the buckle fixing piece 57 to fix the movable clamp body 55 and the fixed clamp body 54 together. Metal blocks 541 and 551 are installed on the top surfaces of the fixed clamp body 54 and the movable clamp body 55 .

[0027] In this embodiment, there are two transmission rods 43, conversion gears 44, rotating shafts 45, and rotating platforms 46 on the rotating mechanism 4, forming two symmetrical sets of rotating platforms 46; the clamping fixture 5 can have two sets and be respectively installed on the two rotating platforms 46 on the rotating mechanism 4.

[0028] The working principle of this embodiment:

[0029] The profile cutting machine frame 1 is provided with one or two sets of rotating platforms 46 driven by a motor, each movable base 53 having a guide groove 531 (such as Figure 3 , Figure 4 As shown in the figure, the fixed base 52 is fixed to the inner side of the rotating platform 46 by bolts and can be slidably connected with the movable base 53. The fixed clamp body 54 and the movable clamp body 55 are respectively turned upside down and locked on the fixed base 52 and the movable base 53 by bolts. A buckle 56 and a buckle fixing member 57 of a detachable connection structure are respectively installed on both sides of the fixed clamp body 54 and the movable clamp body 55. The buckle 56 and the buckle fixing member 57 can be interlocked to make the fixed clamp body 54 and the movable clamp body 55 dock to form a shell, which is used to cover and fix the product 10 to be cut.

[0030] A variable frequency motor 41 is installed under the working platform of the machine 1. The variable frequency motor 41 transmits the rotational kinetic energy to each transmission rod 43 through the reducer 42. The kinetic energy is converted from up and down rotation to horizontal rotation and transmitted to the rotating shaft 45 through the conversion gear 44 at the tail end of the transmission rod 43. The rotating shaft 45 drives the rotating platform 46 and the fixed clamp body 54 and the product 10 to be cut in the movable clamp body 55 to rotate together. The cutting motor 36 fixed in the cutter head movable rod 35 drives the milling cutter to rotate at high speed for cutting. The product (helmet) 1 0 is driven by the rotating platform 46 to rotate, completing the forward movement of cutting. When the rotating platform 46 rotates one circle, the variable frequency motor 41 automatically stops. At this time, the machine control switch can be pressed, and the entire tool holder 33 is pushed up by the piston rod through the lifting cylinder 31 fixed on the platform. The tool holder 33 moves upward in the guide groove 321 of the tool holder base 32 along the two guide rods 331 provided with it, and the milling cutter 38 is away from the bottom of the shell. At this time, the buckle 5 on the fixed clamp body 54 and the movable clamp body 55 can be opened. 6, and then push outward the movable clamp body 55 on the movable base 53 of the jig. When the fixed clamp body 54 and the movable clamp body 55 are separated by more than a certain distance, the product 10 that has just been cut can be taken out, and then the new shell to be cut can be put in, and then the fixed clamp body 54 and the movable clamp body 55 are closed through the movable base 53, and then the buckle 56 and the buckle fixing part 57 on the fixed clamp body 54 and the movable clamp body 55 are used, and then the machine control switch is pressed to start the cutting operation of a new product; if the product needs to be replaced, after taking out the product 10, the bolts in the helmet fixed clamp body 54 and the movable clamp body 55 are respectively unscrewed, the helmet fixed clamp body 54 and the movable clamp body 55 are taken out, and then the helmet fixed clamp body 54 and the movable clamp body 55 of other products are installed. The bolts on the jig are designed to be reverse-threaded in the opposite direction of the helmet rotation feed to avoid the helmet fixed clamp body 54 and the movable clamp body 55 from moving during cutting rotation. If there is danger or emergency during the operation, the emergency stop switches installed at both ends of the machine can be pressed at any time.

[0031] A tool holder spring 34 is installed at the bottom of the gantry of the gantry bracket 2 in the center, and the other end of the tool holder spring 34 is connected to the entire tool holder 33 module. Under the action of the elastic force of the tool holder spring 34 and the gravity of the entire tool holder 33, the cutting guide rod 39 fixed on the cutter head movable rod 35 is always pressed on the upper edge of the helmet fixed clamp body 54 and the movable clamp body 55. The cutting guide rod 39 and the cutting milling cutter 38 are on the same vertical horizontal line and maintain a fixed vertical distance of about 1 cm. The vertical distance between the upper edge of the helmet fixed clamp body 54 and the movable clamp body 55 and the inner cover to the product (helmet) 10 cutting line is exactly equal to the vertical distance between the cutting guide rod 39 and the cutting milling cutter 38. The cutting motor 36 fixed in the cutter head movable rod 35 After power is turned on, the milling cutter 38 is driven to rotate at high speed to start the cutting mode. At the same time, the rotating platform 46 drives the helmet fixed clamp body 54 and the movable clamp body 55 and the product (helmet) 10 covered therein to rotate to complete the cutting feeding task; because the product (helmet) 10 is elliptical, not a perfect circle, and the tool holder 33 is fixed, a movable rod spring 310 needs to be installed between the tool holder 33 and the cutter head movable rod 35. The elastic force of the movable rod spring 310 pushes the cutter head movable rod 35 to move toward the product (helmet) 10, so that the cutting guide rod 39 installed on the outside of the cutter head movable rod 35 always presses against the product 10 to be cut, so that the cutting milling cutter 38 completes the horizontal feeding movement and can continuously cut the lower circumference of the product (helmet) 10.

[0032] like Figure 5 As shown, the second embodiment (single-station cutting) of the helmet profiling cutting device of the present invention comprises a cutting frame 1', a gantry support 2', a cutting mechanism 3', a rotating mechanism 4', and a clamping fixture 5'.

[0033] The gantry bracket 2' is fixedly mounted on the working table of the cutting frame 1', the cutting mechanism 3' is mounted on the cutting frame 1' and located inside the gantry bracket 2', the rotating mechanism 4' is mounted on the working table of the cutting frame 1' and located on one side of the cutting mechanism 3', and the clamping fixture 5' is mounted on the rotating mechanism 4'.

[0034] The cutting mechanism 3' comprises a lifting cylinder 31', a tool holder 32', a lifting linear shaft 33', a lifting linear bearing 34', a cutter head cylinder 35', a cylinder push plate 36', a horizontal linear shaft 37', a horizontal linear bearing 38', a bearing fixing plate 39', a cutting motor 391', a tool chuck 392', a milling cutter 393', a cutting guide rod 394', an air nozzle 395', and a rolling bearing 396'; the cylinder body of the lifting cylinder 31' is fixedly mounted on the top of the gantry bracket 2', the piston rod end of the lifting cylinder 31' is downwardly connected to the tool holder 32', the tool holder 32' is movably inserted into the lifting linear bearing 34' through the lifting linear shaft 33' fixed thereon and moves in a vertical direction, the lifting linear bearing 34' is mounted on the top of the gantry bracket 2', the cylinder body of the cutter head cylinder 35' is fixedly mounted on the tool holder 32', the piston rod end of the cutter head cylinder 35' is connected to the cylinder push plate 36' The cylinder push plate 36' is connected and pushes the cylinder push plate 36' to move in the horizontal direction. The cylinder push plate 36' is movably sleeved on the horizontal linear shaft 37' through the horizontal linear bearing 38' fixed thereon. One end of the horizontal linear shaft 37' is fixed on the bearing fixing plate 39', and the bearing fixing plate 39' is fixedly installed on the tool holder 32'; the cutting motor 391 is fixed on the cylinder push plate 36', the inner end of the milling cutter 393' is fixed on the output shaft of the cutting motor 391' through the tool chuck 392', and the outer end of the milling cutter 393' extends to the clamping fixture 5', the inner end of the cutting guide rod 394' is fixed on the cutting motor 391', and the outer end of the cutting guide rod 394' extends in the horizontal direction and is located below the milling cutter 393'. The rolling bearing 396' on the outer end head of the cutting guide rod 394' is always pressed on the top surface of the clamping fixture 5' and the outer end head of the cutting guide rod 394' is against the product 10' to be cut. A rolling bearing 396' is installed on the outer end of the cutting guide rod 394'. The air nozzle 395' is clamped on the tool chuck 392' and the air outlet is aligned with the milling cutter 393'.

[0035] The rotating mechanism 4' comprises a variable frequency motor 41', a reducer 42', a rotating shaft 43', and a rotating platform 44'; the output shaft of the variable frequency motor 41' is connected to the reducer 42', the output shaft of the reducer 42' is connected to the rotating platform 44' through the rotating shaft 43' and drives the rotating platform 44' to rotate, and the rotating platform 44' is rotatably mounted on the working table of the cutting frame 1'.

[0036] The clamping fixture 5 ′ is the same as the clamping fixture 5 in the first embodiment, and will not be described in detail.

[0037] Working principle of this embodiment:

[0038] 1. The cutter head cylinder (or hydraulic cylinder) 35' is fixed to one side of the table of the tool holder 32' by bolts. The cutter head cylinder (or hydraulic cylinder) 35' faces the direction of the product 10'. The cutter head cylinder (or hydraulic cylinder) 35' has a horizontal linear shaft 37' at the top and bottom, and the cylinder push plate 36' is slidably connected to the upper and lower horizontal linear shafts 37'. The horizontal linear shaft 37' is fixed to the bearing fixing plate 39' by bolts on one side of the cutter head cylinder (or hydraulic cylinder) 35'. The other end facing the product 10' passes through the cylinder push plate 36' and is equipped with a rolling bearing 396' on the outside to improve the stability of movement.

[0039] 2. When the product 10' is inverted and covered in the clamping fixture 5', and the buckle is fastened and locked, after the cutting switch is turned on, the cutting motor 391' drives the milling cutter 393' to rotate at high speed, and at the same time, the piston of the horizontal motion cylinder or hydraulic cylinder 35' pushes the push plate 36' together with the cutting motor 391', the milling cutter 393' and the cutting guide rod 394' fixed thereon to move horizontally toward the product 10' until the cutting guide rod 394' hits the product 10'. At the same time, the piston of the lifting cylinder 31' on the gantry bracket 2' pushes the entire tool holder 32' to move downward until the roller bearing 396' on the cutting guide rod 394' presses the bottom end of the clamping fixture 5' of the product 10', and at the same time, the variable frequency motor 41' drives the rotating platform 44' and the clamping fixture 5' fixed on the rotating platform 44' to rotate together with the product 10' to complete the cutting feed movement. When the bottom edge of the product has an up and down curvature, the bottom edge of the clamping fixture 5' will also make an up and down curvature accordingly. At this time, the cutting guide rod 394' The rolling bearing 396' on the gantry bracket 2' moves up and down along the curvature of the bottom edge of the clamping fixture 5' as the product 10' and the clamping fixture 5' rotate. Therefore, a pressure regulating valve is installed on the lifting cylinder 31' on the gantry bracket 2'. The pressure cannot be adjusted too high, otherwise when the curvature of the bottom edge of the clamping fixture 5' moves upward, the cutting guide rod 394' cannot drive the entire tool holder 32' to move upward together, which will cause the downward force of the cutting guide rod 394' to be too large, resulting in too much friction between the cutting guide rod 394' and the bottom edge of the clamping fixture 5', so that the rotating platform 44' cannot rotate; at the same time, the pressure cannot be too small, otherwise the cutting guide rod 394' will be lifted up when the product 10' is too hard, resulting in inaccurate cutting. Therefore, this part needs to be adjusted during the machine adjustment. At the same time, the number of revolutions of the rotating platform 44' (i.e., the self-rotation feed speed) can also be changed by adjusting the frequency of the variable frequency motor to meet the cutting requirements of different product 10' thicknesses and achieve the best edge appearance cutting quality and accuracy.

[0040] 3. The bottom end of the clamping fixture 5' is wrapped with a layer of metal sheet or inlaid with a circle of metal blocks to improve its friction resistance. At the same time, a rolling bearing 396' is sleeved on the cutting guide rod 394', so that the rolling bearing 396' contacts the metal sheet or inlaid with a circle of metal blocks at the bottom end of the clamping fixture 5' to reduce friction and improve the service life of the clamping fixture 5'.

[0041] 4. Because the cutting opening of the lower edge of the product 10' is not a perfect circle but an ellipse, when the cutting edge of any part of the product 10' is rotated to be perpendicular to the milling cutter 393', the distance between the cutting edge of the product 10' and the gantry bracket 2' of the fixed tool holder 32' is different (the cutting edge of the back of the product 10' is farthest from the gantry bracket 2', followed by the two sides, and the cutting part of the mouth is closest to the gantry bracket 2'). Therefore, the milling cutter 393' needs to be able to automatically move forward and backward according to the distance between the cutting edge of the product 10' and the gantry bracket 2', so as to achieve When the rotating platform 44' drives the product 10' to rotate, the cutting guide rod 394' pushes against the surface of the product 10' and gently passes through it. When the product 10' rotates from both sides to the mouth part (when the distance between the cutting edge of the product 10' and the gantry bracket 2' changes from far to near), the cutting guide rod 394' is pushed back by the product 10'. Because the cutting guide rod 394' is fixed on the cutting motor 391', the cutting guide rod 394' moves backward. When retreating, the milling cutter 393', the cutting motor 391' and the cylinder push plate 36' will retreat smoothly on the linear axis. Therefore, a pressure regulating valve is also installed on the horizontally moving cutter head cylinder (or hydraulic cylinder) 35'. The pressure cannot be adjusted too high, otherwise the pressure of the cutting guide rod 394' against the product 10' will be too high, and the friction between the cutting guide rod 394' and the surface of the product 10' will be too large, so that the rotating platform 44' cannot rotate and the product 10' stops cutting and feeding. At the same time, the pressure cannot be too low, otherwise the cutting The guide rod 394' is easy to jump on the surface of the product 10', causing the cutting guide rod 394' to be too loose and not supported on the surface of the product 10'. The milling cutter 393' cannot cut when it does not contact the product 10'. Therefore, appropriate pressure can make the cutting operation smoother and the edge appearance of the cut product more beautiful. The frequency of the variable frequency motor can also be appropriately adjusted according to the wall thickness of the cutting edge of the product to change the number of revolutions of the rotating platform 44' (i.e., the self-rotation feed speed) to meet the cutting requirements of different product 10' thicknesses and achieve the best edge appearance cutting quality and accuracy.

[0042] 5. After the milling cutter 393' has been cutting for a period of time, only the teeth of the milling cutter 393' in the 4mm section will be worn (because the thickness of the product 10' is generally below 2mm), resulting in poor cutting, slow efficiency, and poor appearance quality of the cutting edge. At this time, the depth of the bottom rod of the milling cutter 393' inserted into the tool chuck can be adjusted to reach the unused part of the milling cutter 393' teeth to contact the edge of the product 10' for cutting (but generally the milling cutter 393' extends out of the cutting guide rod 394' by about 2mm-11mm, so that the entire cut surface of the product 10' is just above the teeth of the milling cutter 393'). After several adjustments, the entire milling cutter 393' is fully utilized. At the same time, there is a rectangular protrusion on the upper edge of the tool chuck 392', which is used to fix an adjustable air nozzle 395'. The air nozzle 395' can be adjusted to align with the cutting milling cutter 393' at all times to blow away the cutting powder remaining in the blade of the milling cutter 393', so as to enhance the chip force of the milling cutter 393', reduce the residual powder in the blade and pseudo-bluntness, high-speed rotation friction causing the tool to heat up, the blade to deform and damage prematurely, and the blowing of air can also serve the purpose of cooling the tool. All of these greatly increase the tool life and reduce the tool cost.

[0043] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A helmet profiling cutting device, characterized in that: Including cutting frame, gantry bracket, cutting mechanism, rotating mechanism, and clamping fixture; The gantry bracket is fixedly mounted on the working table of the cutting machine frame, the cutting mechanism is mounted on the cutting machine frame and is located in the gantry bracket, the rotating mechanism is mounted on the working table of the cutting machine frame and is located on one side of the cutting mechanism, and the clamping fixture is mounted on the rotating mechanism; The clamping fixture comprises a slide rail, a fixed base, a movable base, a fixed clamp body, a movable clamp body, a buckle, and a buckle fixing piece; the slide rail and the fixed base are both fixed on the rotating platform of the rotating mechanism, the lower end of the movable base is slidably connected to the slide rail and opposite to the fixed base, the bottoms of the fixed clamp body and the movable clamp body are respectively fixed to the fixed base and the movable base, the movable clamp body can move relative to the fixed clamp body and abut against the fixed clamp body to form a clamping station for fixing the product, a buckle is installed on the fixed clamp body, and a buckle fixing piece is installed on the movable clamp body, the buckle can be buckled with the buckle fixing piece to fix the movable clamp body and the fixed clamp body together; the cutting mechanism comprises a lifting cylinder, a tool holder base, a tool holder, a tool holder spring, a tool head movable rod, a cutting motor, a tool chuck, a milling cutter, a cutting Cutting guide rod and movable rod spring; the cylinder body of the lifting cylinder and the tool holder base are both fixedly installed on the working surface of the cutting machine frame, the piston rod end of the lifting cylinder is connected to the tool holder, the guide rod at the bottom of the tool holder is movably inserted into the guide groove of the tool holder base, a tool holder spring is arranged between the top surface of the tool holder and the gantry bracket, the cutter head movable rod is movably installed in the tool holder and can move in the horizontal direction, a movable rod spring is arranged between the cutter head movable rod and the tool holder, the cutting motor is installed on the cutter head movable rod, the inner end of the milling cutter is fixed to the output shaft of the cutting motor through the tool chuck, the outer end of the milling cutter extends to the clamping fixture, the inner end of the cutting guide rod is fixed on the cutter head movable rod, the outer end of the cutting guide rod extends horizontally and is located below the milling cutter, the outer end head of the cutting guide rod is always pressed on the top surface of the clamping fixture and the outer end head of the cutting guide rod rests on the product to be cut.

2. The helmet profiling cutting device according to claim 1, characterized in that: The top surfaces of the fixed clamp body and the movable clamp body in the clamping fixture are both installed with metal blocks.

3. The helmet profiling cutting device according to claim 1, characterized in that: The rotating mechanism includes a variable frequency motor, a reducer, a transmission rod, a conversion gear, a rotating shaft, and a rotating platform; the output shaft of the variable frequency motor is connected to the reducer, and the output shaft of the reducer is connected to the rotating platform through the transmission rod, the conversion gear, and the rotating shaft and drives the rotating platform to rotate, and the rotating platform can be rotatably installed on the working table of the cutting frame.

4. The helmet profiling cutting device according to claim 3 is characterized in that: The conversion gears are a pair of bevel gears.

5. The helmet profiling cutting device according to claim 3, characterized in that: The rotating mechanism may have two rotating platforms, and the clamping fixture may have two sets and be respectively mounted on the two rotating platforms of the rotating mechanism.

6. The helmet profiling cutting device according to claim 1, characterized in that: The rotating mechanism includes a variable frequency motor, a reducer, a rotating shaft, and a rotating platform; the output shaft of the variable frequency motor is connected to the reducer, the output shaft of the reducer is connected to the rotating platform through the rotating shaft and drives the rotating platform to rotate, and the rotating platform is rotatably installed on the working table of the cutting frame.

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