Anti-loosening hard alloy cutter

Abstract

The utility model discloses an anti-loosening hard alloy cutter, and belongs to the technical field of hard alloy blades. A plurality of mounting holes are formed in the blade, openings are formed in the two sides of the blade, anti-falling pieces are arranged in the two openings, threaded holes are formed in the two sides of the blade, bolts are arranged in the two threaded holes, first sliding grooves are formed in the two openings, ejection strips are arranged in the two first sliding grooves, and the two ejection strips are movably connected with the bolts. According to the hard alloy blade, the problem that cutting of the blade is affected due to the fact that the installation position is loosened after an existing hard alloy blade is used for a long time and is abraded is solved, the tightness is improved during installation through the additionally-arranged threaded hole and the anti-disengaging piece, and a bolt penetrates through the fixing position of paper cutting equipment to enter the threaded hole; when the bolt continuously moves inwards, the bolt can abut against the top strip, the first transmission rod and the second transmission rod are driven to be in linkage along with movement of the top strip so that the anti-disengaging piece can move outwards, and therefore the anti-disengaging piece can penetrate through the blade installation position of the paper cutting equipment to prevent the blade from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of cemented carbide blades, in particular to an anti-loosening cemented carbide blade. Background Art

[0002] Carbide inserts are made of cemented carbide, which is an alloy material made from hard compounds of refractory metals and bonding metals through powder metallurgy. It has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. In particular, its high hardness and wear resistance remain basically unchanged even at a temperature of 500°C, and it still has a high hardness at 1000°C.

[0003] Announcement No. CN201420824858.5 discloses a carbide tool, including a carbide blade, a carbide shank and a carbide slot, wherein the carbide shank and the carbide slot are of an integrated design, the carbide slot is located at the end of the carbide shank, the carbide blade and the carbide blade are connected and fixed by a screw nut and the shapes match, and after installation, the cutting edge of the carbide blade is exposed outside the edge of the carbide slot, and a spiral cooling channel is also provided in the carbide shank for cooling. After the blade is scrapped, it can be replaced, avoiding the waste of the shank; at the same time, the cooling channel plays a certain cooling role during the processing, which is conducive to reducing the temperature of the blade, improving the cutting speed and processing accuracy.

[0004] Based on the above, the carbide blade can be easily replaced and the temperature of the blade can be cooled. However, the carbide blade can be used in a wide range of applications, among which the carbide blade on the paper cutting equipment is also indispensable. Although the performance of the blade is solved, the carbide blade used on the paper cutting equipment can only be fixed through the traditional mounting holes during installation. However, the carbide blade is worn out after long-term use, resulting in loose installation, thereby affecting the problem of blade cutting.

[0005] Therefore, a kind of anti-loosening cemented carbide cutter is proposed in view of the above problems. Utility Model Content

[0006] The utility model aims to provide a carbide knife that prevents loosening, so as to solve the problem in the background art that the existing carbide blades become loose at the mounting position after being worn out under long-term use, thereby affecting the cutting of the blade.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-loosening carbide knife, comprising a blade, a plurality of mounting holes are provided in the blade, openings are provided on both sides of the blade, anti-loosening sheets are provided in the two openings, threaded holes are provided on both sides of the blade, bolts are provided in the two threaded holes, a slide groove is provided in the two openings, top strips are provided in the two slide grooves, and the two top strips are movably connected to the bolts.

[0008] Preferably, the two anti-dropping sheets and the blade are both made of cemented carbide.

[0009] Preferably, grooves are provided in the openings, and shaft holes are provided on the inner walls of the two grooves.

[0010] Preferably, connecting rods are provided in the two grooves, the front ends of the two connecting rods are located at the rear end of the anti-slip plate, one side of the two connecting rods is movably connected to the second transmission rod, and the two connecting rods are provided with shafts for connecting the second transmission rod.

[0011] Preferably, a sliding rod is provided in the middle of the two transmission rods, and the two sliding rods are movably connected to the shaft hole so that the sliding rod can rotate in the shaft hole.

[0012] Preferably, a transmission rod 1 is movably connected to the notch at the rear end of the top strip, and springs are fixedly connected to the rear ends of the two top strips.

[0013] Preferably, two slide grooves are provided on both sides of the inner walls of the two openings, and sliding blocks for sliding in the two slide grooves are provided on both sides of the two anti-slip plates. The rear ends of the two anti-slip plates are fixedly connected with symmetrical connecting blocks for movably connecting with the connecting rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The threaded hole and the anti-slip sheet of the utility model increase the tightness during installation. The bolt is passed through the fixing part of the paper cutting device and enters the threaded hole. When the bolt moves inward continuously, it can support the top bar. As the top bar moves, the transmission rod 1 and the transmission rod 2 are respectively linked to move the anti-slip sheet outward, so that the anti-slip sheet passes through the blade installation part of the paper cutting device to prevent the blade from loosening.

[0016] 2. The top bar, transmission rod 1, transmission rod 2 and connecting rod of the utility model can move backward along the slide groove 1 when the bolt moves into the threaded hole, and the transmission rod 1 is tilted at the same time, and the transmission rod 2 is pulled by the transmission rod 1, so that the transmission rod 2 rotates with the slide rod as the axis point, and the part connected with the connecting rod at the front end of the slide rod is pushed forward, so that the anti-slip sheet is moved out of the opening and passes through the installation place of the paper cutting device, thereby increasing stability and preventing the blade from loosening due to long-term use, thereby causing displacement and falling off;

[0017] 3. The spring of the utility model can return the top strip to its original position under the action of elastic force after the bolt is removed from the threaded hole, and the anti-drop sheet can be retracted into the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the cemented carbide blade of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the cemented carbide blade of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The structure of the anti-slip sheet of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 4 The structure of the anti-slip sheet of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 5 The structure of the anti-slip sheet of the utility model is shown in FIG. Figure 3 ;

[0023] Figure 6 It is a schematic diagram of the relationship between the anti-dropping piece and the transmission rod of the utility model.

[0024] In the figure: 1, blade; 101, opening; 102, mounting hole; 103, groove; 104, slide slot 1; 105, shaft hole; 107, slide slot 2; 3, threaded hole; 4, bolt; 5, anti-slip sheet; 6, top strip; 601, spring; 602, transmission rod 1; 7, transmission rod 2; 701, slide rod; 8, slider; 9, connecting rod; 10, connecting block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In order to solve the technical problem that the carbide blade in the prior art becomes loose at the installation due to wear after long-term use, thus affecting the cutting of the blade, please refer to Figure 1-6 , providing the following technical solutions:

[0027] The utility model discloses a carbide knife to prevent loosening: comprising a blade 1, a plurality of mounting holes 102 are provided in the blade 1, openings 101 are provided on both sides of the blade 1, anti-slipping sheets 5 are provided in the two openings 101, threaded holes 3 are provided on both sides of the blade 1, bolts 4 are provided in the two threaded holes 3, a slide groove 104 is provided in the two openings 101, top strips 6 are provided in the two slide grooves 104, the two top strips 6 are movably connected with the bolts 4, and the two anti-slipping sheets 5 and the blade 1 are made of carbide. Figure 1 and Figure 2 As shown, the additional threaded holes 3 and anti-slip sheets 5 on both sides of the original blade 1 can increase the tightness from both sides during installation, thereby preventing the blade 1 from being easily loosened at the installation position after long-term use.

[0028] In this embodiment, grooves 103 are provided in the two openings 101, shaft holes 105 are provided in the inner walls of the two grooves 103, connecting rods 9 are provided in the two grooves 103, the front ends of the two connecting rods 9 are located at the rear end of the anti-drop sheet 5, and the two connecting rods 9 are movably connected to the transmission rod 2 7 on one side, and the two connecting rods 9 are provided with shafts for connecting the transmission rod 2 7, and slide bars 701 are provided in the middle of the two transmission rods 2 7, and the two slide bars 701 are movably connected to the shaft holes 105, so that the slide bars 701 can rotate in the shaft holes 105, such as Figure 3 and Figure 5 As shown, the transmission rod 2 7 is movable at its upper and lower ends with the slide rod 701 as the axis point, so that the lower part of the transmission rod 2 7 is pulled by the transmission rod 1 602, and the upper part can push forward against the connecting rod 9 to achieve the function of pushing the anti-drop sheet 5.

[0029] In this embodiment, the notches at the rear ends of the two top strips 6 are movably connected with a transmission rod 1 602, the rear ends of the two top strips 6 are fixedly connected with springs 601, both sides of the inner walls of the two openings 101 are provided with slide grooves 107, both sides of the two anti-slip sheets 5 are provided with sliders 8 for sliding in the slide grooves 107, and the rear ends of the two anti-slip sheets 5 are fixedly connected with symmetrical connecting blocks 10 for movably connecting with the connecting rod 9, such as Figure 4 and Figure 6 As shown, when the bolt 4 moves into the threaded hole 3, the top strip 6 can move backward along the slide groove 104. As the top strip 6 moves backward, the movably connected transmission rod 1 602 can be tilted, and the transmission rod 1 602 pulls the transmission rod 2 7, so that the transmission rod 2 7 rotates with the slide rod 701 as the axis point, so that the upper end of the transmission rod 2 7 tilts forward, and at the same time, the part of the transmission rod 2 7 connected to the connecting rod 9 is pushed forward, thereby moving the anti-slip sheet 5 located in the front out of the opening 101. The spring 601 arranged at the rear end of the top strip 6 can return the top strip 6 to its original position under the action of elastic force after the bolt 4 is moved out of the threaded hole 3, and the anti-slip sheet 5 can be retracted into the opening 101.

[0030] Working principle: When the blade 1 needs to be installed on the blade installation kit in the paper cutting device, first, put the blade 1 into the kit from the bottom, then take out the original fixing parts used for installation and pass them through the kit and the installation holes 102 at the corresponding positions to fix them. After fixing, take out the bolts 4 corresponding to the threaded holes 3 on both sides of the blade 1, pass them through the pre-reserved limit holes from both sides of the kit and enter the threaded holes 3. As the two bolts 4 gradually go deeper into the threaded holes 3, the top strip 6 located in the threaded holes 3 is inserted. The bolt 4 moves backward along the slide groove 104, squeezing the spring 601 at the rear, and the transmission rod 1 602 movably installed on the top strip 6 is also pulled backward. As the transmission rod 1 602 pulls the transmission rod 2 7, the transmission rod 2 7 rotates around the slide rod 701 as the axis point, so that the upper end of the transmission rod 2 7 tilts forward, and at the same time, the part of the transmission rod 2 7 connected to the connecting rod 9 is pushed forward, thereby moving the anti-slip sheet 5 at the front out of the opening 101, so that the anti-slip sheet 5 is pushed out of the limiting hole reserved in advance by the kit.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbide knife that prevents loosening, characterized by: The invention comprises a blade (1), wherein a plurality of mounting holes (102) are provided in the blade (1), openings (101) are provided on both sides of the blade (1), anti-dropping sheets (5) are provided in the two openings (101), threaded holes (3) are provided on both sides of the blade (1), bolts (4) are provided in the two threaded holes (3), a slide groove (104) is provided in the two openings (101), top strips (6) are provided in the two slide grooves (104), and the two top strips (6) are movably connected to the bolts (4).

2. The anti-loosening carbide knife according to claim 1, characterized in that: A groove (103) is provided in each of the two openings (101), and an axial hole (105) is provided on the inner wall of each of the two grooves (103).

3. The anti-loosening carbide knife according to claim 2, characterized in that: A connecting rod (9) is provided in each of the two grooves (103), the front ends of the two connecting rods (9) are located at the rear end of the anti-slip sheet (5), one side of the two connecting rods (9) is movably connected to the second transmission rod (7), and a shaft for connecting the second transmission rod (7) is provided in each of the two connecting rods (9).

4. The anti-loosening carbide knife according to claim 3, characterized in that: A sliding rod (701) is arranged in the middle of the two transmission rods (7), and the two sliding rods (701) are movably connected to the shaft hole (105), so that the sliding rod (701) can rotate in the shaft hole (105).

5. The anti-loosening carbide knife according to claim 1, characterized in that: A transmission rod 1 (602) is movably connected to the notches at the rear ends of the two top strips (6), and a spring (601) is fixedly connected to the rear ends of the two top strips (6).

6. The anti-loosening carbide knife according to claim 4, characterized in that: Two sides of the inner wall of the two openings (101) are provided with a second slide groove (107), and two sides of the two anti-slipping plates (5) are provided with a sliding block (8) for sliding in the second slide groove (107). The rear ends of the two anti-slipping plates (5) are fixedly connected with a symmetrical connecting block (10) for being movably connected with the connecting rod (9).

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