Steel plate cutting device for mold manufacturing

Abstract

The invention relates to the technical field of band sawing machines, and particularly discloses a steel plate cutting device for die manufacturing, which comprises a sawing machine, a driving mechanism, a guide mechanism and a locking mechanism, the sawing machine comprises a base, a stand column and a saw frame, the saw frame is arranged on the base through the stand column, a saw blade is arranged on the saw frame, and the driving mechanism is used for circularly rotating the saw blade; the guiding mechanism comprises a guiding seat and guiding wheels, the locking mechanism comprises a guiding rod, a movable frame, a first elastic piece and locking wheels, the guiding rod is arranged on the saw frame, the movable frame is arranged on the guiding rod in a sliding fit mode and connected with the guiding rod through the first elastic piece, the multiple locking wheels are distributed on the movable frame at intervals, and each locking wheel is in sliding fit with the movable frame. The locking wheels are in friction fit with the saw blade, each locking wheel is provided with a first gear, a first tooth groove is formed in the bottom end of the guide rod, and the first tooth groove can be meshed with the first gear; according to the steel plate cutting device for mold manufacturing, the saw blade can be locked when the saw blade is broken, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of band sawing machines, and in particular to a steel plate cutting device for mold manufacturing. Background Art

[0002] Die cutting is a processing method that uses specific cutting tools and techniques to process the mold material to obtain the desired mold shape and size.

[0003] In the related art, the band saw machine drives the saw wheel to rotate through the transmission mechanism, thereby driving the saw blade to perform circular motion. The saw blade maintains appropriate tension under the action of the tensioning device, and generates sufficient friction between the saw wheel and the saw wheel, so that it can run stably. When the workpiece is fixed by the clamping device, the feeding mechanism transports the workpiece in the direction of the saw blade at the set feed speed, and the saw blade cuts the workpiece while rotating. During the cutting process, the guide device ensures that the movement direction of the saw blade is accurate, and the hydraulic transmission system and the electrical control system work together to achieve precise control of the various components of the saw machine and ensure the smooth progress of the cutting process.

[0004] A Chinese patent with authorization announcement number CN107096959B discloses a band sawing machine, which includes a bed, a saw frame is arranged on the bed, a workbench is arranged in the saw frame, two columns are arranged in the saw frame, a guide arm is arranged between the two columns, a guide seat is installed on the guide arm, a shockproof seat is installed on the guide seat, two swing shafts are arranged in the shockproof seat, a spring is arranged between the front parts of the two swing shafts, and rollers are connected to the rear parts of the two swing shafts. The number of rollers is two, and a saw band gap is left between the two rollers.

[0005] The above patent can reduce or even eliminate the vibration of the saw belt during the use of the band saw machine, has a significant anti-vibration effect, extends the service life of the saw belt, improves the material cutting accuracy, and reduces the sawing noise.

[0006] However, since the saw blade often needs to be tilted and twisted in the cutting position and needs to be tightened at the same time, the twisted part of the saw blade is prone to breakage during use. The saw blade often has good elasticity and toughness. After breaking, the saw blade swings and causes safety accidents or damages the sawing machine. Summary of the invention

[0007] The invention provides a steel plate cutting device for mold manufacturing, aiming to solve the problem in the related art that safety accidents or damage to sawing machines are caused by the breakage of saw blades.

[0008] The steel plate cutting device for mold manufacturing of the present invention comprises: a sawing machine, a driving mechanism, a guiding mechanism and a locking mechanism; The sawing machine comprises a base, a column and a saw frame, wherein the saw frame is arranged on the base through the column, and a saw blade is arranged on the saw frame; The driving mechanism is used for the circular rotation of the saw blade; The guide mechanism comprises a guide seat and a guide wheel, wherein the guide seat is arranged on the saw frame, a plurality of guide wheels are distributed on the guide seat at intervals and are rotationally matched with the guide seat, and the guide wheels are frictionally matched with the saw blade; The locking mechanism includes a guide rod, a movable frame, a first elastic member and a locking wheel. The guide rod is arranged on the saw frame. The movable frame is slidably fitted on the guide rod and is connected to the guide rod through the first elastic member. A plurality of locking wheels are distributed on the movable frame at intervals. Each locking wheel is slidably fitted with the movable frame. The locking wheel is frictionally fitted with the saw blade. Each locking wheel is provided with a first gear. Adjacent first gears are meshed with each other. The bottom end of the guide rod is provided with a first tooth groove, and the first tooth groove can mesh with the first gear.

[0009] The beneficial effect is that the saw blade is in a tensioned state when working normally, and the movable frame is pushed to the upper area of ​​the guide rod through the locking wheel, the first elastic member is compressed, and the first gear is disengaged from the first tooth groove. When the saw blade circulates, the locking wheel rolls with the saw blade; when the saw blade breaks, the saw blade is in a relaxed state, the first elastic member stretches and releases the elastic force, pushing the movable frame to move downward along the guide rod until the first tooth groove is meshed with the first gear, and the first tooth groove locks the locking wheel through the first gear. The locking wheel jams the saw blade through friction, preventing the saw blade from rotating, thereby braking the saw blade and improving safety.

[0010] Preferably, the guide mechanism is provided with a brake assembly, and the brake assembly includes a drive plate, a push rod, a synchronous control unit, a brake rod and a second gear. The drive plate is slidably fitted on the column, and the drive plate is connected to the column through a second elastic member. The movable frame can stop with the drive plate, and the push rod is fixedly connected to the drive plate. The two brake rods are slidably fitted at both ends of the guide seat, and one of the brake rods is connected to the guide seat through a third elastic member. The push rod can push the two brake rods closer to each other through the synchronous control unit. The brake rod is provided with a second tooth groove, and the second gear is fixedly connected to the guide wheel, and the second tooth groove can mesh with the second gear.

[0011] The effect is that, under normal conditions, the second elastic member is in a natural state, the driving plate is abutted against the top end of the saw frame, the push rod is located between the brake rod and the driving seat, the third elastic member is compressed, and the brake rod is disengaged from the second gear; when the saw blade breaks, the movable frame moves downward and pushes the driving plate downward, the push rod moves synchronously with the driving plate, so that the push rod is disengaged from the brake rod, and the third elastic member stretches and pushes the brake rod to move, and the two brake rods are pushed closer to each other through the synchronous control unit, and are respectively abutted against the corresponding second gears, and the brake rod locks the guide wheel through the second gear, and the guide wheel clamps the saw blade through friction, further preventing the saw blade from rotating.

[0012] Preferably, the synchronization control unit includes a first rod, a second rod and a third gear, the first rod and the second rod are respectively connected to the two brake rods, the third gear is rotatably engaged on the guide seat, and the first rod and the second rod are both engaged with the third gear.

[0013] The effect is that when one of the brake rods moves under the elastic force of the third elastic member, it will drive the first rod to move synchronously, the first rod drives the third gear to rotate, the third gear drives the second rod to move, and the second rod drives the other brake rod to move, thereby realizing the synchronous movement of the two brake rods towards each other.

[0014] Preferably, a baffle is further provided on the peripheral side of the saw frame, and the baffle is used to prevent the saw blade from swinging out of the saw frame when the saw blade breaks.

[0015] The effect is that after the saw blade breaks, it will reset from the bent state and swing. When the saw blade is about to leave the saw frame, it will stop with the baffle to prevent the saw blade from swinging to the outside of the saw frame and hitting the staff.

[0016] Preferably, the driving mechanism includes two driving wheels, and the two driving wheels are respectively rotatably engaged on both sides of the saw frame. Two driving motors are provided on the saw frame, and each driving motor is connected to one driving wheel. The saw blade is sleeved on the driving wheel, and the driving wheel is frictionally engaged with the saw blade.

[0017] Preferably, the saw frame is provided with a toggle assembly, which includes a toggle rod and a sliding rod. The saw frame is provided with a toggle groove, the toggle rod is slidably fitted in the toggle groove, the sliding rod is slidably fitted on the saw frame, and is connected to the saw frame through a fourth elastic member, the toggle rod is slidably fitted with the sliding rod, and the toggle rod can toggle the saw blade and make the saw blade disengage from the driving wheel.

[0018] The effect is that after the saw blade is broken, it is in a relaxed state, the fourth elastic member stretches and releases the elastic force, pushing the broken saw blade toward the baffle plate, and causing the saw blade to abut against the baffle plate, thereby preventing the saw blade from swinging.

[0019] Preferably, the saw frame is provided with an adjustment assembly and a limit rod, the guide rod is slidingly matched with the saw frame, the adjustment assembly can push the guide rod to move horizontally, a first limit rod is provided on both sides of the guide rod, and a second limit rod is provided on the saw frame, the second limit rod is connected to the saw frame through a fifth elastic member, the second limit rod can be engaged with the corresponding sliding rod, the top end of the first limit rod is provided with a first inclined plane structure, the bottom end of the second limit rod is provided with a second inclined plane structure, the first inclined plane structure can stop with the second inclined plane structure, and when the guide rod moves horizontally, the corresponding second limit rod can be pushed by the first limit rod to release the engagement relationship with the sliding rod.

[0020] Preferably, the adjustment assembly includes a driving rod, a fourth gear, a one-way bearing, a rotating wheel and a movable rod. The fourth gear is rotationally engaged on the saw frame through a torsion spring, and the rotating wheel is unidirectionally rotationally engaged with the fourth gear through the one-way bearing. The rotating wheel is provided with a movable groove extending along its radial direction, and the movable rod is slidably engaged in the movable groove and is connected to the rotating wheel through a sixth elastic member. The guide rod is provided with a mating groove, and the movable rod is slidably engaged in the toggle groove. The driving rod is provided with a driving groove, and the movable frame is provided with a slider, and the slider is slidably engaged in the driving groove. The driving rod is provided with a driving tooth groove, and the driving tooth groove is meshed with the fourth gear.

[0021] Preferably, the saw frame is provided with a fixing rod, the fixing rod is provided with a limiting groove, the driving rod is provided with a limiting key, and the limiting key is slidably fitted in the limiting groove.

[0022] Preferably, the side wall of the rotating wheel has a ratchet structure, and the saw frame is provided with a limiting plate, and the limiting plate can abut against the ratchet structure, thereby limiting the rotating wheel in one direction.

[0023] By adopting the above technical solution, the beneficial effects of the present invention are: The steel plate cutting device for mold manufacturing of the present invention has a saw blade in a tensioned state when working normally, and the movable frame is pushed to the upper area of ​​the guide rod by the locking wheel, and the first elastic member is compressed. At this time, the first gear is out of contact with the first tooth groove, and the locking wheel rolls with the saw blade when the saw blade circulates. When the saw blade breaks, the saw blade is in a relaxed state, and the first elastic member stretches and releases the elastic force, pushing the movable frame to move downward along the guide rod until the first tooth groove is meshed with the first gear. The first tooth groove locks the locking wheel through the first gear, and the locking wheel jams the saw blade through friction to prevent the saw blade from rotating, thereby braking the saw blade and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic structural diagram of a steel plate cutting device for mold manufacturing according to an embodiment of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the saw frame according to an embodiment of the present invention from another viewing angle.

[0026] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0027] Figure 4 It is a schematic diagram of the locking mechanism structure of an embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the movable frame structure of an embodiment of the present invention.

[0029] Figure 6 Schematic diagram of the guide mechanism structure of an embodiment of the present invention.

[0030] Figure 7 2 is a cross-sectional view of a saw frame according to an embodiment of the present invention.

[0031] Figure 8 It is a schematic diagram of the guide seat structure of an embodiment of the present invention.

[0032] Fig. 9 2 is a schematic structural diagram of a first brake lever according to an embodiment of the present invention.

[0033] Fig.10 It is a schematic diagram of the cooperation between the guide rod and the rotating wheel according to an embodiment of the present invention.

[0034] Fig.11 Schematic diagram of the structure of the toggle assembly according to an embodiment of the present invention.

[0035] Reference numerals: 1. sawing machine; 101. base; 102. saw frame; 1021. toggle slot; 103. column; 2. saw blade; 31. driving wheel; 32. driving motor; 4. guide mechanism; 41. guide seat; 42. guide wheel; 5. locking mechanism; 51. guide rod; 511. first tooth groove; 512. matching groove; 52. movable frame; 521. slider; 53. first elastic member; 54. locking wheel; 541. first gear; 61. driving plate; 62. second elastic member; 63. push rod; 631. conical protrusion; 641. first brake rod; 64 2. Second brake rod; 65. Third elastic member; 66. Second gear; 671. First rod; 672. Second rod; 673. Third gear; 7. Baffle; 81. Drive rod; 811. Drive slot; 82. Fourth gear; 83. One-way bearing; 84. Rotating wheel; 841. Movable slot; 85. Movable rod; 86. Sixth elastic member; 9. Fixed rod; 10. Limit plate; 111. Push rod; 112. Sliding rod; 1121. Slide slot; 113. Fourth elastic member; 12. First limit rod; 13. Second limit rod; 14. Fifth elastic member. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figures 1 to 11 As shown, the steel plate cutting device for mold manufacturing of the present invention comprises: a sawing machine 1, a driving mechanism, a guiding mechanism 4, a locking mechanism 5, a toggle assembly and an adjusting assembly.

[0038] Specifically, Figure 1 As shown, the sawing machine 1 includes a base 101, a column 103 and a saw frame 102. A workbench is provided on the base 101. Two columns 103 are provided between the saw frame 102 and the workbench. The two columns 103 are respectively located on both sides of the workbench. The bottom ends of the columns 103 are fixedly connected to the base 101, and the saw frame 102 is clamped on the columns 103. A baffle 7 is also provided on the peripheral side of the saw frame 102. The baffle 7 is used to prevent the saw blade 2 from swinging out of the saw frame 102 when the saw blade 2 breaks, so as to prevent safety hazards.

[0039] like Figure 1 and Figure 2As shown, the driving mechanism includes a driving wheel 31 and a driving motor 32, and there are two driving forces. The two driving wheels 31 are respectively rotatably matched on both sides of the saw frame 102, and the two driving motors 32 are fixedly arranged on the saw frame 102. The output end of each driving motor 32 is fixedly connected to a driving wheel 31, and the driving motor 32 is used to drive the driving wheel 31 to rotate. The saw blade 2 is sleeved on the two driving wheels 31, and the saw blade 2 and the driving wheel 31 are frictionally matched. When the driving wheel 31 rotates, the saw blade 2 is driven to rotate cyclically through friction.

[0040] like Figure 1 , Figure 2 and Figure 6 As shown, the guide mechanism 4 includes a guide seat 41 and a guide wheel 42. There are two guide seats 41, which are arranged on both sides of the workbench. The top of each guide seat 41 is fixedly connected to the saw frame 102. Four guide wheels 42 are arranged on each guide seat 41. The four guide wheels 42 are spaced apart on the guide seat 41 in groups of two. Each guide wheel 42 is rotationally matched with the guide seat 41. The saw blade 2 is located between the two groups of guide wheels 42. Each guide wheel 42 is stopped and frictionally matched with the saw blade 2. The guide mechanism 4 is used to twist the saw blade 2 so that the saw blade 2 between the two guide seats 41 is vertically distributed with the workbench to ensure that the movement direction of the saw blade 2 is accurate.

[0041] like Figures 1 to 5 As shown, the locking mechanism 5 includes a guide rod 51, a movable frame 52, a first elastic member 53 and a locking wheel 54. The guide rod 51 is slidably fitted at the upper area of ​​the saw frame 102. The guide rod 51 can move horizontally. The movable frame 52 is slidably fitted on the guide rod 51. The movable frame 52 and the guide rod 51 are elastically connected by the first elastic member 53. The first elastic member 53 is a spring. The movable frame 52 can move upward or downward along the extension direction of the guide rod 51. The saw frame 102 is provided with an avoidance groove. The movable frame 52 can extend into the avoidance groove when moving downward. Four locking wheels 54 are spaced apart on both sides of the movable frame 52 in groups of two. Each locking wheel 54 is rotationally fitted with the movable frame 52. The saw blade 2 is located between the two locking wheels 54 in each group of locking wheels 54. Each locking wheel 54 is frictionally fitted with the saw blade 2. A first gear 541 is fixedly connected to the locking wheel 54. The two first gears 541 on each group of locking wheels 54 mesh with each other. A first tooth groove 511 is provided at the bottom end of the guide rod 51. The first gear 541 on the locking wheel 54 located at the bottom in each group of locking wheels 54 can mesh with the first tooth groove 511.

[0042] When the saw blade 2 is taut, the saw blade 2 pushes the movable frame 52 through the locking wheel 54 to overcome the elastic force of the first elastic member 53 and move upward, and the first elastic member 53 is compressed. When the saw blade 2 breaks, the movable frame 52 moves downward under the elastic force of the first elastic member 53 until the first tooth groove 511 is engaged with the first gear 541 on the locking wheel 54 located at the bottom of each group of locking wheels 54. Since the two first gears 541 on each group of locking wheels 54 are engaged with each other, all the locking wheels 54 are locked to prevent the locking wheels 54 from rotating. The locking wheel 54 locks the saw blade 2 through friction to prevent the saw blade 2 from rotating in a cycle.

[0043] like Figure 1 , Figure 2 , Figures 6 to 9 As shown, the guide mechanism 4 is provided with a brake assembly, which includes a driving plate 61, a push rod 63, a synchronous control unit, a brake rod and a second gear 66. The push rod 63 is fixedly connected to the bottom end of the driving plate 61, and a conical protrusion 631 is provided on the push rod 63. The driving plate 61 is slidably matched with the column 103. The driving plate 61 is elastically connected to the column 103 through a second elastic member 62, and the second elastic member 62 is a spring. The driving plate 61 can move up and down along the column 103. The avoidance groove runs through the saw frame 102, and the bottom end of the movable plate can pass through the avoidance groove and stop at the top end of the driving plate 61. The brake rod includes a first brake rod 641 and a second brake rod 642. The first brake rod 641 and the second brake rod 642 are symmetrically distributed on the front and rear sides of the guide seat 41. The first brake rod 641 is elastically connected to the guide seat 41 through a third elastic member 65, and the third elastic member 65 is a spring. Both brake rods are slidably matched with the guide seat 41, and the two brake rods can move closer to or farther from each other under the control of the synchronous control unit. The push rod 63 can extend between the first brake rod 641 and the guide seat 41. The first brake rod 641 and the second brake rod 642 are both provided with a second tooth groove. Each guide wheel 42 is fixedly connected with a second gear 66, and the second gear 66 can mesh with the corresponding second tooth groove. The synchronization control unit includes a first rod 671, a second rod 672 and a third gear 673. The first rod 671 is fixedly connected to the first brake rod 641, the second rod 672 is fixedly connected to the second brake rod 642, and the third gear 673 is rotatably matched on the driving seat. The first rod 671 and the second rod 672 are respectively located on both sides of the third gear 673, and both are meshed with the third gear 673.

[0044] In the initial state, the conical protrusion 631 on the push rod 63 is located between the guide seat 41 and the first brake rod 641, and the third elastic member 65 is compressed. When the movable frame 52 tilts and moves downward, the movable frame 52 pushes the driving plate 61 to move downward, the second elastic member 62 is compressed, the push rod 63 and the driving rod 81 move downward synchronously, the conical protrusion 631 moves downward and disengages from the first brake rod 641, the third elastic member 65 releases the elastic force and pushes the first brake rod 641 to move forward, the first rod 671 moves synchronously with the brake rod, thereby pushing the third gear 673 to rotate, the third gear 673 drives the second rod 672 to rotate, and the second rod 672 drives the second brake rod 642 to move backward until the second gear 66 engages with the corresponding second tooth groove, thereby locking the guide wheel 42 and preventing the guide wheel 42 from rotating. The guide wheel 42 locks the saw blade 2 through friction force, further preventing the saw blade 2 from cyclically rotating, and the locking wheel 54 works together with the guide wheels 42 on the two guide mechanisms 4 to lock the saw blade 2.

[0045] like Figure 3 , Figure 4 and Fig.10 As shown, the adjustment assembly is arranged on the saw frame 102, and the adjustment assembly includes a driving rod 81, a fourth gear 82, a one-way bearing 83, a rotating wheel 84 and a movable rod 85. The fourth gear 82 is rotationally engaged on the saw frame 102 through a torsion spring, and the one-way bearing 83 is fixedly connected at the center of the fourth gear 82. The one-way bearing 83 and the rotating wheel 84 are unidirectionally rotated. The rotating wheel 84 is provided with a movable groove 841 extending along its radial direction. The movable rod 85 is slidably engaged in the movable groove 841. The movable rod 85 is elastically connected to the end of the movable groove 841 through the sixth elastic member 86. The sixth elastic member 86 is a spring. The guide rod 51 is provided with a matching groove 512, and the matching groove 512 extends along the length direction of the guide frame. The movable rod 85 extends into the matching groove 512 and slidably engages with the matching groove 512. The saw frame 102 is provided with a fixed rod 9, and a limit groove is provided on the fixed rod 9. The limit groove is parallel to the guide rod 51. The driving rod 81 is located between the fixed rod 9 and the fourth gear 82. The driving rod 81 is provided with a limit key, which is slidably fitted in the limit groove and can move along the limit groove. The driving rod 81 is also provided with a tooth groove, and the driving rod 81 can mesh with the fourth gear 82 through the tooth groove. The bottom end of the driving rod 81 is provided with a driving groove 811. The movable frame 52 is provided with a slider 521, which is slidably fitted in the driving groove 811, and the slider 521 can slide along the driving groove 811. The side wall of the rotating wheel 84 is provided with a ratchet structure, and the saw frame 102 is provided with a limit plate 10, which can stop with the ratchet structure, thereby realizing one-way limiting of the rotating wheel 84. When the fourth gear 82 rotates counterclockwise, the limit plate 10 stops with the ratchet structure and limits the counterclockwise rotation.

[0046] like Figure 1 , Figure 2and Fig.11 As shown, the toggle assembly includes a toggle rod 111 and a sliding rod 112. The sliding rod 112 is provided with a sliding groove 1121. The toggle rod 111 slides in the sliding groove 1121 and can move along the sliding groove 1121. The saw frame 102 is provided with a toggle groove 1021. There are two toggle grooves 1021, each of which is close to a driving wheel 31. The toggle grooves 1021 are inclined, and a toggle assembly is provided next to each toggle groove 1021. The toggle rod 111 slides in the toggle groove 1021 and can move along the toggle groove 1021. The sliding rod 112 slides on the rear side of the saw frame 102. The sliding rod 112 and the saw frame 102 are elastically connected by a fourth elastic member 113. The fourth elastic member 113 is a spring, and the sliding rod 112 can move left and right relative to the saw frame 102.

[0047] like Figure 2 As shown, a first limit rod 12 is provided on both sides of the left and right sides of the guide rod 51, and two second limit rods 13 are also provided on the saw frame 102, and the two second limit rods 13 are both located between the corresponding first limit rod 12 and the toggle assembly, and the second limit rod 13 is elastically connected to the saw frame 102 through a fifth elastic member 14, and the fifth elastic member 14 is a spring. A first inclined plane structure is provided at the top end of the first limit rod 12, and a second inclined plane structure is provided at the bottom end of the second limit rod 13, the first inclined plane structure and the second inclined plane structure can stop each other, and the second limit rod 13 can also be snapped together with the sliding rod 112.

[0048] The implementation principle of the steel plate cutting device for mold manufacturing of the embodiment of the present invention is as follows: under normal working conditions, the saw blade 2 is stretched tightly between the two driving wheels 31, at which time the movable frame 52 is located in the upper area of ​​the guide rod 51, the first elastic member 53 is compressed, and the conical protrusion 631 on the push rod 63 is located between the first brake rod 641 and the driving seat, the third elastic member 65 is compressed, and the second tooth groove is out of contact with the second gear 66.

[0049] When the saw blade 2 breaks, the movable frame 52 moves downward along the guide rod 51 under the push of the elastic force of the first elastic member 53 until the first gear 541 on the locking wheel 54 at the bottom of each group of locking wheels 54 is engaged with the first tooth groove 511. At this time, the first tooth groove 511 locks the first gear 541, thereby locking the locking wheel 54. The locking wheel 54 clamps the saw blade 2 through friction force to prevent the driving wheel 31 from continuing to drive the saw blade 2 to rotate. When the movable frame 52 moves downward at an angle, it will push the driving plate 61 to move downward along the column 103, the second elastic member 62 is compressed, the push rod 63 and the driving plate 61 move downward synchronously, the conical protrusion 631 disengages from the first brake rod 641, and under the elastic force of the third elastic member 65, the first brake rod 641 moves forward until the first brake rod 641 engages with the corresponding second gear 66. When the first brake rod 641 moves forward, the first rod 671 moves synchronously with it and pushes the third gear 673 to rotate. The third gear 673 drives the second rod 672 to move backward, and the second rod 672 drives the second brake rod 642 to move backward, so that the second brake rod 642 engages with the corresponding second gear 66. The first brake rod 641 and the second brake rod 642 can lock the guide wheel 42 through the second gear 66, and the guide wheel 42 clamps the saw blade 2, thereby further preventing the driving wheel 31 from driving the saw blade 2 to rotate.

[0050] When the movable frame 52 moves downwardly, it can also drive the driving rod 81 to move downwardly synchronously with it through the slider 521. The driving rod 81 drives the fourth gear 82 to rotate counterclockwise. The torsion spring accumulates force. At this time, the ratchet structure on the rotating wheel 84 stops against the limit plate 10, thereby preventing the rotating wheel 84 from rotating. The one-way bearing 83 and the rotating wheel 84 rotate relative to each other. When the movable frame 52 moves to the lowest point and the locking mechanism 5 clamps the saw blade 2, the tooth groove on the driving rod 81 disengages from the fourth gear 82, the torsion spring releases the elastic force and pushes the fourth gear 82 to rotate clockwise. The fourth gear 82 drives the ratchet wheel to rotate clockwise through the one-way bearing 83. During the clockwise rotation of the ratchet wheel, the movable groove 841 rotates along the circumference of the ratchet wheel. When the torsion on the left side of the saw blade 2 breaks, the left half of the saw blade 2 is in a relaxed state, and the right side of the saw blade 2 is in the locking mechanism 5. When the movable groove 841 rotates to the right side of the matching groove 512, the movable rod 85 can push the guide rod 51 to the right under the elastic force of the sixth elastic member 86, and the guide rod 51 drives the locking mechanism 5 to move to the right, so that the right half of the saw blade 2 is in a relaxed state. When the guide rod 51 moves to the right, the first limit rod 12 on the left side of the guide rod 51 pushes the corresponding second limit rod 13 to move upward, thereby disengaging the second limit rod 13 on the left side from the sliding rod 112 on the left side, and the fourth elastic member 113 stretches and pushes the sliding rod 112 on the left side to move to the left. The sliding rod 112 on the left side drives the lever 111 on the left side to move along the toggle groove 1021 on the left side, and toggles the left half of the saw blade 2 onto the baffle 7 to prevent the saw blade 2 from swinging freely after breaking.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A steel plate cutting device for mold manufacturing, comprising: Sawing machine, driving mechanism, guiding mechanism; The sawing machine comprises a base, a column and a saw frame, wherein the saw frame is arranged on the base through the column, and a saw blade is arranged on the saw frame; The driving mechanism is used for the circular rotation of the saw blade; The guide mechanism comprises a guide seat and a guide wheel, wherein the guide seat is arranged on the saw frame, a plurality of guide wheels are distributed on the guide seat at intervals and are rotationally matched with the guide seat, and the guide wheels are frictionally matched with the saw blade; It is characterized in that a locking mechanism is also provided, which includes a guide rod, a movable frame, a first elastic member and a locking wheel, the guide rod is arranged on the saw frame, the movable frame is slidably fitted on the guide rod, and is connected to the guide rod through the first elastic member, a plurality of locking wheels are distributed on the movable frame at intervals, each of the locking wheels is slidably fitted with the movable frame, the locking wheel is frictionally fitted with the saw blade, each of the locking wheels is provided with a first gear, adjacent first gears are meshed with each other, and the bottom end of the guide rod is provided with a first tooth groove, and the first tooth groove can mesh with the first gear.

2. The steel plate cutting device for mold manufacturing according to claim 1, characterized in that: The guide mechanism is provided with a brake assembly, which includes a drive plate, a push rod, a synchronous control unit, a brake rod and a second gear. The drive plate is slidably fitted on the column, and the drive plate is connected to the column through a second elastic member. The movable frame can stop the drive plate, and the push rod is fixedly connected to the drive plate. Two brake rods are slidably fitted at both ends of the guide seat, one of the brake rods is connected to the guide seat through a third elastic member, and the push rod can push the two brake rods closer to each other through the synchronous control unit. The brake rod is provided with a second tooth groove, and the second gear is fixedly connected to the guide wheel, and the second tooth groove can mesh with the second gear.

3. The steel plate cutting device for mold manufacturing according to claim 2, characterized in that: The synchronous control unit comprises a first rod, a second rod and a third gear, wherein the first rod and the second rod are respectively connected to the two brake rods, the third gear is rotatably engaged on the guide seat, and the first rod and the second rod are both meshed with the third gear.

4. The steel plate cutting device for mold manufacturing according to claim 1, characterized in that: A baffle is also provided on the peripheral side of the saw frame, and the baffle is used to prevent the saw blade from swinging out of the saw frame when the saw blade breaks.

5. The steel plate cutting device for mold manufacturing according to claim 1, characterized in that: The driving mechanism includes two driving wheels, which are respectively rotatably engaged with the two sides of the saw frame. The saw frame is provided with two driving motors, each of which is connected to one of the driving wheels. The saw blade is sleeved on the driving wheels, and the driving wheels are frictionally engaged with the saw blade.

6. The steel plate cutting device for mold manufacturing according to claim 5, characterized in that: The saw frame is provided with a toggle assembly, which includes a toggle rod and a sliding rod. The saw frame is provided with a toggle groove, the toggle rod is slidably fitted in the toggle groove, the sliding rod is slidably fitted on the saw frame, and is connected to the saw frame through a fourth elastic member, the toggle rod is slidably fitted with the sliding rod, and the toggle rod can toggle the saw blade and make the saw blade disengage from the driving wheel.

7. The steel plate cutting device for mold manufacturing according to claim 6, characterized in that: The saw frame is provided with an adjustment assembly and a limit rod, the guide rod is slidably matched with the saw frame, the adjustment assembly can push the guide rod to move horizontally, a first limit rod is provided on both sides of the guide rod, and a second limit rod is provided on the saw frame, the second limit rod is connected to the saw frame through a fifth elastic member, the second limit rod can be engaged with the corresponding sliding rod, the top end of the first limit rod is provided with a first inclined plane structure, the bottom end of the second limit rod is provided with a second inclined plane structure, the first inclined plane structure can stop with the second inclined plane structure, and when the guide rod moves horizontally, the corresponding second limit rod can be pushed by the first limit rod to release the engagement relationship with the sliding rod.

8. The steel plate cutting device for mold manufacturing according to claim 7, characterized in that: The adjusting assembly includes a driving rod, a fourth gear, a one-way bearing, a rotating wheel and a movable rod. The fourth gear is rotationally engaged on the saw frame through a torsion spring. The rotating wheel is one-way rotationally engaged with the fourth gear through the one-way bearing. The rotating wheel is provided with a movable groove extending along its radial direction. The movable rod is slidably engaged in the movable groove and is connected to the rotating wheel through a sixth elastic member. The guide rod is provided with a matching groove. The movable rod is slidably engaged in the toggle groove. The driving rod is provided with a driving groove. The movable frame is provided with a slider. The slider is slidably engaged in the driving groove. The driving rod is provided with a driving tooth groove, and the driving tooth groove is meshed with the fourth gear.

9. The steel plate cutting device for mold manufacturing according to claim 8, characterized in that: The saw frame is provided with a fixing rod, the fixing rod is provided with a limiting groove, the driving rod is provided with a limiting key, and the limiting key is slidably matched in the limiting groove.

10. The steel plate cutting device for mold manufacturing according to claim 8, characterized in that: The side wall of the rotating wheel has a ratchet structure, and the saw frame is provided with a limiting plate, which can abut against the ratchet structure to limit the rotating wheel in one direction.

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