Strip-shaped blank sawing equipment

Abstract

The utility model belongs to the technical field of profile cutting, and particularly relates to strip-shaped blank sawing equipment. A strip-shaped blank sawing device comprises a rack, a feeding mechanism, a clamping mechanism and a sawing mechanism, and the feeding mechanism comprises a base and a feeding plate which is driven by a feeding air cylinder and arranged on the base in a sliding mode; the clamping mechanism comprises a bottom plate, a cushion block fixedly connected to the bottom plate, a pressing block capable of being vertically embedded in the cushion block in a sliding mode, and a clamping air cylinder driving the pressing block to move up and down so as to clamp a blank. The sawing mechanism comprises a motor base, a stepping motor fixedly connected to the motor base, a saw blade driven by the stepping motor through a synchronous belt assembly and a rocker arm assembly driving the saw blade to move up and down. The clamping mechanism comprises a feeding clamping mechanism and a sawing clamping mechanism which are the same in structure, a bottom plate of the feeding clamping mechanism is fixedly connected to the feeding plate, and a bottom plate of the sawing clamping mechanism is fixedly connected to the base. The long-strip-shaped blank cutting device can cut long-strip-shaped blanks in a fixed-length mode and is high in cutting automation level.

Description

Technical Field

[0001] The utility model belongs to the technical field of profile cutting, and particularly relates to a sawing device for strip-shaped blanks. Background Art

[0002] In the prior art, when cutting strip-shaped metal blanks, it is necessary to manually place the product to be processed on the positioning fixture, manually push the blank forward, and then perform cutting. For example, the Chinese utility model patent with the application number 202221516571.7 discloses a cutting device for processing strip-shaped copper-aluminum profiles. Since it is necessary to manually push the blank forward for cutting, it has technical problems such as low fixed-length cutting accuracy, low automation level, affecting cutting efficiency, high fatigue degree of manual operation, and high labor manufacturing cost.

[0003] Based on this, it is urgent to design a sawing device for strip-shaped blanks that integrates automatic blank feeding, automatic clamping, and automatic cutting to solve the above-mentioned technical problems. Summary of the Utility Model

[0004] To solve the technical problems existing in the prior art, the present application provides a sawing device for strip-shaped blanks that can perform fixed-length cutting on long strip-shaped blanks and has a high level of cutting automation.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A sawing device for strip-shaped blanks, including a machine frame and a support frame arranged on the machine frame, and further including:

[0007] A feeding mechanism: including a base fixedly connected to the machine frame and a feeding plate driven by a feeding cylinder and slidably arranged on the base;

[0008] A clamping mechanism: including a bottom plate, a cushion block fixedly connected to the bottom plate, a pressing block vertically slidably embedded in the cushion block, and a clamping cylinder for driving the pressing block to move up and down to clamp the blank;

[0009] A sawing mechanism: including a motor base fixedly connected to the machine frame, a stepping motor fixedly connected to the motor base, a saw blade driven by the stepping motor through a synchronous belt assembly, and a rocker arm assembly for driving the saw blade to move up and down;

[0010] The clamping mechanism includes a feeding clamping mechanism and a sawing clamping mechanism with the same structure. The bottom plate of the feeding clamping mechanism is fixedly connected to the feeding plate, and the bottom plate of the sawing clamping mechanism is fixedly connected to the base; after the blank is clamped by the feeding clamping mechanism, it is conveyed forward by the feeding mechanism, and after being clamped by the sawing clamping mechanism, it is cut by the saw blade.

[0011] Preferably, a baffle is fixedly connected to one end of the base, the feeding cylinder is fixedly connected to the feeding plate, and the guide rod of the feeding cylinder is fixedly connected to the baffle.

[0012] Preferably, the clamping mechanism further includes a support block fixedly connected to the bottom plate. A receiving groove is vertically formed in the support block. One end of a lever is rotatably inserted into the support block through a pin shaft and extends into the receiving groove, and the other end of the lever is disposed above the guide rod of the clamping cylinder; the cushion block is fixedly connected to the support block above the receiving groove; a slider is sleeved on the end of the lever in the receiving groove, and the slider is connected to a pressing block in the receiving groove through a connecting component; when the guide rod of the clamping cylinder extends out, it can drive the lever to deflect to drive the slider and the pressing block to move downward, so as to fix the blank between the pressing block and the cushion block.

[0013] Preferably, the pressing block includes a pressing plate disposed above the cushion block and side plates fixedly connected to both ends of the pressing plate. The side plates are slidably embedded in the cushion block and extend into the receiving groove.

[0014] Preferably, the connecting component includes a force - equalizing rod rotatably connected to the upper part of the slider, and both ends of the force - equalizing rod are respectively rotatably inserted into the two side plates.

[0015] Preferably, a guiding groove is vertically formed in the groove wall of the receiving groove, and the slider slides in the guiding groove.

[0016] Preferably, one end of a compression spring is fixedly connected to the lower end face of the slider and the other end is fixedly connected to the bottom plate, and the compression spring is in a compressed state.

[0017] Preferably, the cushion block is detachably embedded in the support block above the receiving groove, a fixing block is fixedly connected to the upper end face of the support block, and the lower end face of the fixing block presses against the cushion block.

[0018] Preferably, a chip - proof plate is covered on the support block at the opening of the receiving groove.

[0019] Preferably, the swing - arm assembly includes a mounting seat fixedly connected to the frame, a mounting frame hinged on the mounting seat, a swing - arm motor fixedly connected to the mounting frame, a lead screw fixedly connected to the output shaft of the swing - arm motor through a coupling, a lead - screw nut sleeved and meshed on the lead screw, a hinge plate fixedly sleeved on the lead - screw nut, a swing arm hinged on the hinge plate, a support shaft disposed on the motor seat, the swing arm is rotatably sleeved on the support shaft, a cutting shaft is rotatably inserted through one end of the swing arm away from the hinge plate, the saw blade is fixedly connected to the cutting shaft, and the stepping motor drives the cutting shaft to rotate through a synchronous - belt assembly.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] By providing a feeding mechanism, the present utility model can achieve automatic feeding of the blank; by providing a clamping mechanism, the blank can be clamped and fixed during cutting to prevent it from shaking; by providing a sawing and clamping mechanism for clamping and fixing the blank, and by providing a feeding and clamping mechanism, while clamping and fixing the blank, it cooperates with the feeding mechanism to complete the feeding operation of the blank; by providing a sawing mechanism, automatic cutting can be achieved after the blank is clamped by the clamping mechanism. Compared with the prior art, the present utility model can achieve fixed-length automatic cutting of long strip-shaped blanks, thereby improving the automation level of blank cutting, increasing the blank cutting efficiency, and solving problems such as high manual operation fatigue and high labor manufacturing costs existing in traditional blank cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0023] Figure 2 It is a schematic diagram of the connection structure of the feeding mechanism, clamping mechanism and sawing mechanism of the present utility model.

[0024] Figure 3 It is a schematic diagram of the structure of the sawing mechanism of the present utility model from the first perspective.

[0025] Figure 4 It is a schematic diagram of the structure of the sawing mechanism of the present utility model from the second perspective

[0026] Figure 5 It is a schematic diagram of the connection structure of the feeding mechanism and clamping mechanism of the present utility model.

[0027] Figure 6 It is a schematic diagram of the structure of the feeding mechanism of the present utility model.

[0028] Figure 7 It is a schematic diagram of the structure of the clamping mechanism of the present utility model.

[0029] Figure 8 It is a partial schematic diagram of the structure of the clamping mechanism of the present utility model.

[0030] Figure 9 It is a partial schematic diagram of the structure of the clamping mechanism of the present utility model.

[0031] Figure 10 It is a schematic diagram of the structure of the support block of the present utility model.

[0032] Figure 11 It is a schematic diagram of the structure of the pressing block of the present utility model.

[0033] Figure 12 It is a schematic diagram of the structure of the spacer block of the present utility model.

[0034] In the figure: 1, frame; 2, blank; 3, support frame,

[0035] 4, feeding mechanism, 41, base; 42, feeding cylinder; 43, feeding plate; 44, baffle; 45, fine adjustment micrometer; 46, mounting block; 47, proximity sensor,

[0036] 5, feeding clamping mechanism, 51, bottom plate; 52, spacer block, 521, fixing block; 522, card slot; 523, spacer block avoidance groove; 524, slot; 53, pressing block, 531, pressing plate; 532, side plate; 533, pressing block avoidance groove; 54, clamping cylinder; 55, support block, 551, accommodating groove; 552, guiding groove; 553, waist-shaped through hole; 554, rotating through hole; 555, chip-proof plate; 56, lever, 561, pin shaft; 57, slider, 571, rectangular through hole; 58, force equalizing rod; 59, compression spring,

[0037] 6, sawing clamping mechanism,

[0038] 7, sawing mechanism, 71, motor base; 72, stepping motor; 73, synchronous belt assembly, 731, first driving synchronous pulley; 732, first driven synchronous pulley; 733, second driving synchronous pulley; 734, second driven synchronous pulley; 735, first synchronous belt; 736, second synchronous belt; 74, saw blade; 75, rocker arm assembly, 751, mounting seat; 752, mounting frame; 753, rocker arm motor; 754, lead screw; 755, lead screw nut; 756, hinged plate; 757, rocker arm; 758, support shaft; 759, cutting shaft; 76, material receiving box. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. Embodiment

[0041] See attached Figure 1, 2 As shown in 2 , a bar blank sawing device includes a frame 1 and a support frame 3 provided on the frame 1 for supporting the blank 2. It also includes a feeding mechanism 4 for feeding the blank 2, a clamping mechanism for clamping and fixing the blank 2 (the clamping mechanism includes a feeding clamping mechanism 5 and a sawing clamping mechanism 6 with the same structure), and a sawing mechanism 7 for cutting the blank 2 and provided on one side of the feeding mechanism 4. After being clamped by the feeding clamping mechanism 5, the blank 2 is conveyed forward by the feeding mechanism 4, and after being clamped by the sawing clamping mechanism 6, it is cut by the sawing mechanism 7. In addition, it also includes a control device (not shown in the figure) for connecting and controlling each of the above mechanisms.

[0042] See Figure 3 , 4 As shown in 4 , the sawing mechanism 7 includes a motor base 71 fixedly connected to the frame 1 by bolts, a stepping motor 72 fixedly connected to the motor base 71 by bolts, a saw blade 74 driven by the stepping motor 72 through a synchronous belt assembly 73, and a rocker arm assembly 75 for driving the saw blade 74 to move up and down.

[0043] The rocker arm assembly 75 includes a mounting base 751 fixedly connected to the frame 1 on one side of the motor base 71 by bolts, a mounting frame 752 rotatably connected to the mounting base 751 through a pin shaft structure, a rocker arm motor 753 fixedly connected to the mounting frame 752 by bolts, a lead screw 754 fixedly connected to the output shaft of the rocker arm motor 753 through a coupling, a lead screw nut 755 sleeved and meshed on the lead screw 754, a hinge plate 756 fixedly sleeved on the lead screw nut 755, a rocker arm 757 rotatably connected to the hinge plate 756 through a pin shaft structure, and a support shaft 758 horizontally rotatably connected to the motor base 71 through a rotating bearing. The rocker arm 757 is of a V-shaped structure and is rotatably sleeved on the support shaft 758. A cutting shaft 759 is rotatably penetrated through one end of the rocker arm 757 away from the hinge plate 756. The saw blade 74 is fixedly installed on the cutting shaft 759. The stepping motor 72 drives the cutting shaft 759 and the saw blade 74 to rotate through the synchronous belt assembly 73. By driving the lead screw nut 755 to move up and down by the rocker arm motor 753, the rocker arm 757 is deflected, so as to realize the up and down movement of the saw blade 74, thereby realizing the cutting of the blank 2.

[0044] The synchronous belt assembly 73 includes a first driving synchronous pulley 731 fixedly installed on the output shaft of the stepping motor 72 by key connection, a first driven synchronous pulley 732 fixedly installed on one end of the support shaft 758 by key connection, a second driving synchronous pulley 733, a second driven synchronous pulley 734 fixedly installed on the end of the cutting shaft 759 by key connection, a first synchronous belt 735 sleeved and engaged on the first driving synchronous pulley 731 and the first driven synchronous pulley 732, and a second synchronous belt 736 sleeved and engaged on the second driving synchronous pulley 733 and the second driven synchronous pulley 734. Thus, the stepping motor 72 drives the first driving synchronous pulley 731, the first synchronous belt 735, the first driven synchronous pulley 732, the second driving synchronous pulley 733, the second synchronous belt 736, the second driven synchronous pulley 734, the cutting shaft 759 and the saw blade 74 to rotate.

[0045] Further, in order to collect the blank 2 cut off, a blank collecting box 76 is provided below the saw blade 74.

[0046] See Figure 5 、 6 As shown in, the feeding mechanism 4 includes a base 41 fixedly installed on the frame 1 by bolts, and a feeding plate 43 driven by a feeding cylinder 42 and slidably arranged on the base 41. Specifically, a baffle 44 is fixedly connected to one end of the base 41 by bolts, the feeding cylinder 42 is fixedly installed on the upper end surface of the feeding plate 43 by bolts, and the guide rod of the feeding cylinder 42 is fixedly installed on the baffle 44 by bolts. In order to make the feeding plate 43 slide smoothly on the base 41, the feeding plate 43 is slidably arranged on the base 41 through a slide rail-slider assembly. Thus, with the above structure, the feeding plate 43 can be driven to reciprocate by the telescopic movement of the guide rod of the feeding cylinder 42.

[0047] Further, in order to finely adjust the movement stroke of the feeding plate 43 to finely adjust the cutting length of the blank 2, a micrometer 45 is fixedly embedded in the baffle 44, and the telescopic rod of the micrometer 45 passes through between the baffle 44 and the feeding plate 43, and the stroke of the feeding plate 43 is finely adjusted by adjusting the extending length of the telescopic rod of the micrometer 45.

[0048] See Figure 7As shown, the clamping mechanism includes a feeding clamping mechanism 5 and a sawing clamping mechanism 6 with the same structure. Since their structures are the same, in this embodiment, only the structure of the feeding clamping mechanism 5 will be described. The feeding clamping mechanism 5 includes a bottom plate 51, a cushion block 52 fixedly connected to the bottom plate 51, a pressing block 53 vertically and slidably embedded in the cushion block 52, and a clamping cylinder 54 for driving the pressing block 53 to move up and down to clamp the blank 2. The feeding clamping mechanism 5 and the sawing clamping mechanism 6 are arranged in parallel, and the sawing clamping mechanism 6 is arranged on the side away from the feeding cylinder 42, while the feeding clamping mechanism 5 is arranged on the side close to the feeding cylinder 42. The bottom plate 51 of the feeding clamping mechanism 5 is fixedly connected to the feeding plate 43 by bolts, and the bottom plate 51 of the sawing clamping mechanism 6 is fixedly connected to the mounting block 46 by bolts. The mounting block 46 is fixedly installed on the base 41 by bolts. The mounting block 46 and the feeding plate 43 are of a split structure and there is a gap between them.

[0049] See Figure 7 、 8 As shown in FIGS. 9, 10, 11, 12, specifically, the feeding clamping mechanism 5 further includes a support block 55 fixedly connected to the bottom plate 51 by bolts. See Figure 11 As shown in FIG., a receiving groove 551 is vertically formed in the support block 55, a guiding groove 552 is vertically formed in the groove wall of the receiving groove 551, waist-shaped through holes 553 are vertically formed in the two side groove walls of the receiving groove 551 respectively, and rotating through grooves 554 are formed in the two side groove walls of the receiving groove 551 below the waist-shaped through holes 553.

[0050] See Figure 8 As shown in FIG., one end of the lever 56 is rotatably penetrated through the rotating through groove 554 of the support block 55 by a pin shaft 561 and extends into the receiving groove 551, and the other end of the lever 56 is arranged above the guide rod of the clamping cylinder 54. A slider 57 is rotatably sleeved on the end of the lever 56 in the receiving groove 551. Specifically, a rectangular through groove 571 is formed in the slider 57, and the end of the lever 56 penetrating through the rectangular through groove 571 is of a cam structure. That is, when the guide rod of the clamping cylinder 54 extends to drive the corresponding end of the lever 56 to rise, the corresponding end of the lever 56 of the slider 57 drives the slider 57 to descend. When the guide rod of the clamping cylinder 54 retracts, the lever 56 drives the slider 57 to rise back to the initial position due to gravity. In order to guide the slider 57 during its up and down movement, the slider 57 is slidably embedded in the guiding groove 552.

[0051] The cushion block 52 is detachably embedded on the support block 55 above the receiving groove 551. In order to fix the cushion block 52, a fixing block 521 is fixedly connected to the upper end face of the support block 55 by bolts, and the lower end face of the fixing block 521 presses against the cushion block 52. See Figure 12As shown, a card slot 522 for clamping the blank 2 is formed in the upper end face of the spacer block 52 along its length direction, and a spacer block avoidance groove 523 is formed in the upper end face of the spacer block 52 along its width direction to avoid the saw blade 74 when cutting the blank 2. In addition, a slot 524 penetrating the spacer block 52 is vertically formed in the spacer block 52 on both sides of the card slot 522 for inserting the pressing block 53.

[0052] See Figure 11 As shown, the pressing block 53 includes a pressing plate 531 arranged above the spacer block 52 and side plates 532 integrally formed at both ends of the pressing plate 531 and vertically and fixedly connected downward. The two side plates 532 can be respectively slidably embedded in the slots 524 on the spacer block 52 and extend into the accommodation groove 551. Corresponding to the spacer block avoidance groove 523, a pressing block avoidance groove 533 is formed in the pressing block 53 to avoid the saw blade 74 when cutting the blank 2.

[0053] See Figure 9 As shown, in order to apply force to the pressing block 53 evenly through the slider 57, the slider 57 is connected to the side plate 532 of the pressing block 53 in the accommodation groove 551 through a connecting component. The connecting component includes a force - equalizing rod 58 rotatably connected to the upper part of the slider 57, and both ends of the force - equalizing rod 58 are respectively rotatably penetrated through the two side plates 532. In addition, in order to make the pressing block 53 reset quickly, one end of a compression spring 59 is fixedly connected to the lower end face of the slider 57 and the other end is fixedly connected to the bottom plate 51, and the compression spring 59 is in a compressed state. In addition, a chip - proof plate 555 is covered on the support block 55 at the opening of the accommodation groove 551 through bolts.

[0054] The working process of the embodiment of the present utility model is as follows:

[0055] 1. Manually place the long strip - shaped blank 2 to be cut on the support frame 3, and pass one end of the blank 2 through between the pressing block 53 and the spacer block 52 of the feeding clamping mechanism 5 and the sawing clamping mechanism 6 in sequence. After starting the switch, the clamping cylinders 54 of the feeding clamping mechanism 5 and the sawing clamping mechanism 6 both extend the guide rods, and the downward pressure is transmitted to the pressing block 53 through the slider 57 and the force - equalizing rod 58 by the lever force - adding principle to press the blank 2 tightly;

[0056] 2. The stepping motor 72 drives the saw blade 74 to rotate through the synchronous belt assembly 73, and the swing arm motor 753 rotates to drive the lead screw 754 to lower one end of the swing arm 757 provided with the saw blade 74, so that the saw blade 74 descends. The saw blade 74 enters the pressing block avoidance groove 553 and the spacer block avoidance groove 523 to cut the blank 2; after cutting is completed, the swing arm motor 753 rotates in the reverse direction to drive the lead screw 754 to raise the saw blade 74 to the initial position;

[0057] 3. The clamping cylinder 54 of the sawing clamping mechanism 6 keeps its guide rod extended to continuously clamp the blank 2. The guide rod of the clamping cylinder 54 of the feeding clamping mechanism 5 retracts to release the blank 2. The guide rod of the feeding cylinder 42 retracts to drive the feeding plate 43 and the feeding clamping mechanism 5 to move a set distance away from the saw blade 74. Then, the guide rod of the clamping cylinder 54 of the feeding clamping mechanism 5 extends to make the pressing block 53 and the cushion block 52 re-clamp the blank 2. The guide rod of the clamping cylinder 54 of the sawing clamping mechanism 6 retracts to release the blank 2. The guide rod of the feeding cylinder 42 extends to drive the feeding plate 43, the feeding clamping mechanism 5 and the blank 2 to move a set distance towards the saw blade 74, and push the previously cut blank 2 out of the card slot 522 and drop it into the material receiving box 76. Then, the guide rod of the clamping cylinder 54 of the sawing clamping mechanism 6 extends to make the corresponding pressing block 53 and cushion block 52 re-clamp the blank 2;

[0058] 4. Repeat the above steps to complete the cutting of the whole blank 2; To achieve the material shortage alarm, a proximity sensor 47 can be fixedly installed on the support block 55 of the feeding clamping mechanism 5. When only the end of the blank 2 remains, the proximity sensor 47 will give a material shortage alarm.

[0059] It should be noted that the connection method and control principle between the control device and the feeding cylinder 42, the proximity sensor 47, the clamping cylinder 54, the stepping motor 72, the swing arm motor 753, etc. are prior arts and will not be elaborated here. They are set to improve the automation level and as long as they can meet the above working process.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strip-shaped blank sawing device, comprising a frame and a support frame arranged on the frame, characterized in that: Also includes: Feeding mechanism: comprising a base fixedly connected to the frame, and a feeding plate driven by a feeding cylinder and slidably arranged on the base; The clamping mechanism includes a bottom plate, a cushion block fixedly connected to the bottom plate, a pressing block vertically slidably embedded in the cushion block, and a clamping cylinder driving the pressing block to move up and down to clamp the blank; The sawing mechanism includes a motor base fixedly connected to the frame, a stepper motor fixedly connected to the motor base, a saw blade driven by the stepper motor through a synchronous belt assembly, and a rocker arm assembly driving the saw blade to move up and down; The clamping mechanism comprises a feeding clamping mechanism and a sawing clamping mechanism with the same structure, the bottom plate of the feeding clamping mechanism is fixedly connected to the feeding plate, and the bottom plate of the sawing clamping mechanism is fixedly connected to the base; The blank is conveyed forward by the feeding mechanism after being clamped by the feeding clamping mechanism, and is cut by the saw blade after being clamped by the sawing clamping mechanism.

2. The strip-shaped blank sawing device according to claim 1, characterized in that: A baffle is fixedly connected to one end of the base, the feeding cylinder is fixedly connected to the feeding plate, and a guide rod of the feeding cylinder is fixedly connected to the baffle.

3. The strip-shaped blank sawing device according to claim 1, characterized in that: The clamping mechanism also includes a support block fixedly connected to the base plate, a receiving groove is vertically opened on the support block, one end of the lever is rotatably inserted into the support block and extends into the receiving groove through a pin shaft, and the other end of the lever is arranged above the guide rod of the clamping cylinder; the cushion block is fixedly connected to the support block above the receiving groove; a slider is sleeved on the end of the lever in the receiving groove, and the slider is connected to the pressure block in the receiving groove through a connecting assembly; when the guide rod of the clamping cylinder is extended, it can drive the lever to deflect to drive the slider and the pressure block to move downward, so as to fix the blank between the pressure block and the cushion block.

4. The strip-shaped blank sawing device according to claim 3, characterized in that: The pressing block comprises a pressing plate arranged above the cushion block and side plates fixedly connected at both ends of the pressing plate. The side plates can be slidably embedded in the cushion block and extend into the containing groove.

5. The strip-shaped blank sawing device according to claim 4, characterized in that: The connecting assembly comprises a force equalizing rod rotatably connected to the upper part of the sliding block, and two ends of the force equalizing rod are rotatably inserted into the two side plates respectively.

6. The strip-shaped blank sawing device according to claim 3, characterized in that: A guide groove is vertically opened on the groove wall of the accommodating groove, and the sliding block is slidably arranged in the guide groove.

7. The strip-shaped blank sawing device according to claim 3, characterized in that: One end of the compression spring is fixedly connected to the lower end surface of the slider and the other end of the compression spring is fixedly connected to the bottom plate, and the compression spring is in a compressed state.

8. The strip-shaped blank sawing device according to claim 3, characterized in that: The cushion block is detachably embedded on the support block above the accommodating groove, the fixing block is fixedly connected to the upper end surface of the support block, and the lower end surface of the fixing block is pressed against the cushion block.

9. The strip-shaped blank sawing device according to claim 3, characterized in that: A chip prevention plate is provided on the upper cover of the support block at the opening of the accommodating groove.

10. The strip-shaped blank sawing device according to claim 1, characterized in that: The rocker arm assembly includes a mounting base fixedly connected to the frame, a mounting frame hinged on the mounting base, a rocker arm motor fixedly connected to the mounting frame, a lead screw fixedly connected to the output shaft of the rocker arm motor through a coupling, a lead screw nut sleeved and meshed on the lead screw, a hinge plate fixedly sleeved on the lead screw nut, a rocker arm hinged on the hinge plate, and a support shaft arranged on the motor seat; the rocker arm is rotatably sleeved on the support shaft, and a cutting shaft is rotatably penetrated at one end of the rocker arm away from the hinge plate, the saw blade is fixedly connected to the cutting shaft, and the stepper motor drives the cutting shaft to rotate through a synchronous belt assembly.

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