CN112276232B - A servo electric pulse structure - Google Patents

Abstract

The invention discloses a servo electric pulse structure which is used for a band sawing machine and comprises a mounting block for fixing a saw blade frame of the band sawing machine, wherein a saw blade pressing device is arranged at the lower end of the mounting block. The invention has the advantages that the long saw dust can be broken by pulse vibration, and the cutting efficiency and the cutting precision are improved; the motor control is adopted, the structure is simple, the setting cost is low, the pulse groove is matched with the pulse block, the pulse frequency is stable, and the control performance is good.

Description

A servo electric pulse structure

technical field

The present application relates to the technical field of pulse structures of saw blade equipment, in particular to a servo electric pulse structure.

Background technique

Affected by the cutting of the natural frequency of the cutting material, the cutting of the band saw blade in the metal sawing machine will produce sawdust. The long sawdust will bend after cooling and easily wrap around the saw blade, affecting the lower sawing of the saw teeth, resulting in a decrease in cutting efficiency and cutting accuracy. In order to improve the cutting efficiency of the saw blade and achieve chip breaking, it is necessary to set up a pulse structure for the saw blade.

Those skilled in the art disclose a pulse control pulse device on the saw frame in the patent No. CN201822138399.6, including the saw frame, and the left and right distribution of the drive wheel and the driven wheel are installed on the saw frame, the drive wheel and the A band saw blade is installed between the driven wheels, and the lower end of the saw frame is provided with a band saw blade guide part distributed left and right and used in conjunction with the band saw blade. The saw frame is provided with a pulse drive unit used to drive the band saw blade guide part. The pulse drive unit has The pulse upper piston assembly, the oil storage pot used in conjunction with the pulse upper piston assembly, and the oil block tee joint, the pulse upper piston assembly, the oil storage pot, and the oil block tee joint are connected by pipelines, wherein the oil block tee joint is connected with the oil block tee joint The guide parts of the two band saw blades are connected. Its disadvantages are: using oil pressure pulse, there are many pipeline settings and functional parts, which require a large space, the space layout is inconvenient, and it is not conducive to the installation of equipment, and there are many parts of oil pressure pulse, the overall complexity of the pulse device, and the application cost higher.

Contents of the invention

Based on the above deficiencies in the prior art, the present invention provides a servo electric pulse structure, which can break long sawdust by pulse, improve cutting efficiency and cutting precision, and has simple structure, low installation cost, good shock resistance and long service life .

In order to realize the object of the above invention, the present application adopts the following technical solutions.

A servo electric pulse structure, used for band sawing machines, including a mounting block fixed on the saw blade frame of the band sawing machine, the lower end of the mounting block is provided with a saw blade holding device, and the feature is that the mounting block is provided with a servo motor and a pulse wheel , the pulse wheel is provided with a pulse groove, the lower side of the pulse wheel is matched with a pulse block, the pulse block is located on the upper side of the saw blade holding device, and the lower end of the pulse block is matched with the saw blade holding device. It can break long sawdust by pulse, improve cutting efficiency and cutting precision; it adopts motor control, simple structure, low installation cost, pulse slot and pulse block cooperate, pulse frequency is stable, and control performance is good.

Preferably, the saw blade pressing device includes two sets of oppositely arranged saw blade pressing wheel sets and two oppositely arranged limiting blocks, and the pulse block cooperates with the limiting blocks. The saw blade pressure wheel group and the limit block realize the direction change and limit of the saw blade, which is convenient for saw blade cutting. The pulse block and the limit block cooperate. When the pulse block vibrates, it can quickly feedback to the limit block, so as to realize the synchronous vibration of the saw blade. , Complete the breaking of long sawdust, and the feedback efficiency is high.

Preferably, the servo electric pulse structure is provided with two groups on the band saw machine. The two sets of servo electric pulse structures arranged symmetrically act synchronously to realize the synchronous vibration of the saw blade up and down. The movement stability of the saw blade is high, and the cutting ability of the saw blade is guaranteed while the pulse vibration is in progress.

Preferably, the outer end of the pulse block is provided with a rotating shaft, and a matching wheel is rotated on the rotating shaft, the axis of the matching wheel is perpendicular to the axis of the pulse wheel, and the lower end of the pulse wheel is arranged in contact with the peripheral side of the matching wheel. When the pulse wheel rotates, the pulse groove at the lower end of the pulse wheel cooperates with the matching wheel to realize the pulse vibration of the pulse block. The matching wheel can rotate synchronously with the pulse wheel to reduce the friction of the pulse wheel and facilitate the movement of the pulse block.

Preferably, eight pulse grooves are arranged on the lower end surface of the pulse wheel, and the eight pulse grooves are arranged in a circular array around the axis of the pulse wheel. The pulse is stable and uniform, and the pulse vibration is reliable, which is convenient for the realization of the pulse breaking function.

Preferably, the pulse grooves are provided with even-numbered grooves on the lower end surface of the pulse wheel, and the groove depths of the even-numbered pulse grooves are alternately equal. The groove depths of adjacent pulse grooves are different, and the pulse amplitudes generated are different, thus providing pulses of different intensities to the band saw blade, which is more conducive to cutting long sawdust, and is also conducive to more convenient completion of band saw cutting.

Preferably, several pulse grooves are provided on the lower end surface of the pulse wheel, and the groove widths of the several pulse grooves are different; the groove widths of the several pulse grooves are arranged in an arithmetic sequence. The groove width of the pulse groove corresponds to the structure time of the pulse. Through different groove width settings, the pulse generation time is differentiated, so that there are multiple vibration frequencies, and the frequency acting on the band saw blade also changes, so that the vibration of the band saw blade The frequency becomes variable, and resonance is not easy to occur, prolonging the service life of the band saw blade.

Preferably, a bracket is provided on the mounting block, the servo motor is fixed on the bracket, and a bearing seat is also provided on the bracket, and a bearing and a rotating shaft are arranged in the bearing seat, and the rotating shaft and the motor shaft of the servo motor are connected through a coupling, and the pulse The wheel is fixedly arranged on the rotating shaft. The bracket is used for the installation of the bearing seat and the servo motor. When the pulse vibration occurs, in order to ensure the stability and reliability of the pulse action, the pulse wheel needs to be kept stationary, and the setting of the rotating shaft in the bracket can intercept all the pulse vibration by the bracket. The bracket serves as The main support reduces the impact on the servo motor and prolongs the service life of the pulse device.

As a preference, the shape of the pulse block is a cuboid, and a limit chute matching the pulse block is provided in the installation block, one end of the pulse block is rotatably connected in the limit chute, and a pressing block is arranged on the lower side of the other end of the pulse block. , The contact setting of the pressing block and the limit block. The double rotation realized by the installation block, the pulse block and the pressure block, the pulse block rotates around the connection axis with the installation block when it is pressed down, and the pressure block can rotate relative to the pulse block, so that the pressure block can always fit the limit block in a straight line , to achieve stable and reliable pulse.

Preferably, a guide post is provided at one end of the pressure block, and a guide groove matching the guide post is provided in the impulse block. The guide column and the guide groove cooperate to prevent excessive rotation of the pressing block, and the pulse action is reliable.

Preferably, the lower end of the pulse wheel is in the shape of a ring, and the arc surface of the pulse groove is arranged to match the peripheral surface of the matching wheel. The setting of the pulse wheel is convenient, and the pulse groove and the mating wheel fit together without collision and impact, and the structure is reliable.

Preferably, the two ends of the coupling are provided with constricted necks, and the bracket is provided with two parallel positioning blocks, and the positioning blocks are provided with positioning holes which cooperate with the constricted necks. The positioning block cooperates with the necking through the positioning hole to realize the support and limit of the coupling, which improves the service life of the coupling.

Preferably, the bracket is provided with a static energy-absorbing device, the static energy-absorbing device includes a housing, and the housing is provided with three longitudinally continuous liquid storage chambers separated by partitions, the energy-absorbing liquid is provided in the liquid storage chamber, and the partition board There are capillary holes on the top; a return chamber is provided on the same side of the three liquid storage chambers, the upper end of the return chamber is connected to the upper end of the uppermost liquid storage chamber, and the lower end of the return chamber is connected to the lower end of the lowermost liquid storage chamber. The bracket, servo motor and pulse wheel need to ensure the stability in height, so a dynamic energy-absorbing structure cannot be installed. The static energy-absorbing structure of this application can complete the flow of the energy-absorbing liquid through the feedback of the energy-absorbing liquid to the vibration, thereby reducing the vibration The energy is converted into the kinetic energy of the energy-absorbing liquid. At rest, the liquid sealing effect of the capillary will prevent the energy-absorbing liquid in each liquid storage chamber from flowing with each other. When the pulse vibration occurs, the pulse vibration will allow the energy-absorbing liquid to overcome the capillary The hole does work and flows downward under the action of gravity, and the energy-absorbing liquid in the bottommost liquid storage chamber flows back into the return chamber, and the vibration energy can be converted into heat energy and kinetic energy of the energy-absorbing liquid, realizing static energy absorption, improving the bracket, Service life of couplings, servo motors, etc.

Preferably, rotating blades are provided in the return chamber, and the rotating blades are fixed on an energy-absorbing shaft connected to the wall of the return chamber. When the energy-absorbing liquid in the return cavity flows upwards, the rotating blades rotate accordingly, and finally drive the energy-absorbing shaft and the energy-absorbing blades to rotate, and convert them into wind energy blowing outwards, which can realize dust-proofing outside the support.

The invention has the following beneficial effects: it can break long sawdust by pulse shock, improve cutting efficiency and cutting precision, and has simple structure, low installation cost, good shock resistance, long service life and high feedback efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention on a saw blade frame.

Fig. 2 is a schematic structural diagram of the first embodiment of the present invention.

Fig. 3 is an exploded view of the embodiment shown in Fig. 1 .

FIG. 4 is an internal cross-sectional view of the embodiment shown in FIG. 1 .

Fig. 5 is a schematic structural view of the lower end of the pulse wheel in the embodiment shown in Fig. 1 .

Fig. 6 is a schematic diagram of the internal structure of the static energy-absorbing structure in the second embodiment of the present invention.

Fig. 7 is a schematic structural view of the lower end of the pulse wheel in the third embodiment of the present invention.

Fig. 8 is a schematic structural diagram of the fourth embodiment of the present invention at the lower end of the pulse wheel.

In the figure: saw blade frame 1 installation block 11 saw blade holding device 13 saw blade pressing wheel group 14 limit block 15 servo electric pulse structure 2 fixed block 20 limit chute 201 servo motor 21 pulse wheel 22 pulse groove 23 coupling 24 bearing 25 Rotating shaft 26 Bearing seat 27 Bracket 28 Positioning block 29 Pulse block 3 Rotating shaft 31 Cooperating wheel 32 Press block 33 Guide column 34 Static energy absorbing device 4 Shell 41 Liquid storage chamber 42 Energy absorbing liquid 43 Return chamber 44 Separator 45 Capillary hole 46 rotating blades 47 energy-absorbing shafts 48 energy-absorbing blades 49 .

Detailed ways

The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Example 1,

As shown in Fig. 1 to Fig. 5, a servo electric pulse structure is used for a band sawing machine, and the servo electric pulse structure 2 is provided with two groups on the band sawing machine. The servo electric pulse structure 2 includes a mounting block 11 fixed on the saw blade frame 1 of the band sawing machine. It can be seen from FIG. The technical means and specific content are not strictly limited, so it will not be expanded. The lower end of the mounting block 11 is provided with a saw blade holding device 13 , the mounting block 11 includes a fixing block 20 for fixing the saw blade holding device 13 , and the fixing block 20 and the mounting block 11 are fixed with screws. The mounting block 11 is provided with a servo motor 21 and a pulse wheel 22, and the mounting block 11 is provided with a bracket 28, which is fixed on the upper side of the fixing block 20 by screws. The servo motor 21 is fixed on the support 28, and the support 28 is also provided with a bearing seat 27. The bearing seat 27 is provided with a bearing 25 and a rotating shaft 26. The rotating shaft 26 is connected with the motor shaft of the servo motor 21 through a coupling 24, and the pulse The wheel 22 is fixedly arranged on the rotating shaft 26 . The two ends of the shaft coupling 24 are provided with constrictions, and the bracket 28 is provided with two parallel positioning blocks 29, and the positioning blocks 29 are provided with positioning holes matched with the constrictions. The saw blade holding device includes two sets of saw blade pressing wheel sets 14 and two oppositely arranged limiting blocks 15. The pulse wheel 22 is provided with a pulse groove 23, and the lower side of the pulse wheel 22 is equipped with a pulse block 3. The pulse block 3 is located on the upper side of the saw blade holding device 13, and the lower end of the pulse block 3 cooperates with the saw blade holding device 13. Specifically, the pulse block 3 cooperates with the limit block 15 . The outer end of pulse block 3 is provided with rotating shaft 31, and rotation on rotating shaft 31 is provided with mating wheel 32, and the axis of mating wheel 32 is perpendicular to the axis of pulse wheel 22, and the lower end of pulse wheel 22 is annular, and the arc surface of pulse groove 23 Cooperate with the peripheral surface setting of matching wheel 32. The edge of the pulse groove 23 and the lower end of the pulse wheel 22 transition smoothly. Eight pulse grooves 23 are arranged on the lower end surface of the pulse wheel 22 , and the eight pulse grooves 23 are arranged in a circular array around the axis of the pulse wheel 22 . The lower end of the pulse wheel 22 is provided in contact with the peripheral side of the engagement wheel 32 . The shape of the pulse block 3 is a cuboid, and the installation block 11 is provided with a limit chute 201 that matches the pulse block 3. Specifically, the limit chute 201 is located in the fixed block 20, and the left end of the pulse block 3 is hinged on the limit chute In 201 , the lower side of the right end of the pulse block 3 is hingedly provided with a pressing block 33 , and the pressing block 33 is arranged in contact with the limiting block 15 . One end of the pressure block 33 is provided with a guide column 34 , and a guide groove matching the guide column 34 is provided in the pulse block 3 .

Example 2,

As shown in Figure 6, the difference between Embodiment 2 and Embodiment 1 is that it is a servo electric pulse structure. Embodiment 2 is provided with a static energy-absorbing device 4 on the bracket 28, and the static energy-absorbing device 4 includes a housing 41 , the housing 41 is provided with three longitudinally continuous liquid storage chambers 42 separated by partitions 45, the energy-absorbing liquid 43 is arranged in the liquid storage chambers 42, and capillary holes 46 are provided on the partitions 45; the three liquid storage chambers The left side of 42 is provided with a return chamber 44 , the upper end of the return chamber 44 is connected to the upper end of the uppermost liquid storage chamber 42 , and the lower end of the return chamber 44 is connected to the lower end of the lowermost liquid storage chamber 42 . Initially, the energy-absorbing liquid 43 in the uppermost liquid storage chamber 42 and the lowermost liquid storage chamber 42 is full, and the return chamber 44 is also filled with the energy-absorbing liquid 43 . The energy-absorbing liquid 43 in the central liquid storage chamber 42 is not full, thus a vacuum environment is built in the uppermost and lowermost liquid storage chambers 42, and the liquid in the uppermost liquid storage chamber 42 vibrates and drips into the middle storage chamber. When the liquid chamber 42 is used, the energy-absorbing liquid 43 in the return chamber 44 can flow back from the lowermost liquid storage chamber 42 to the uppermost liquid storage chamber 42 . Rotating vanes 47 are arranged in the return cavity 44, and the rotating vanes 47 are fixed on the energy-absorbing shaft 48 connected to the wall of the return cavity 44. Energy-absorbing blade 49 is arranged.

Example 3,

As shown in FIG. 7 , the difference between embodiment 3 and embodiment 1 is that eight pulse grooves 23 are provided on the lower end surface of the pulse wheel, and the groove depths of the eight pulse grooves 23 are alternately equal. The groove depths of adjacent pulse grooves 23 are different, and the generated pulse amplitudes are different, thereby providing pulses of different intensities to the band saw blade, which is more conducive to cutting long sawdust, and is also conducive to more convenient completion of band saw cutting.

Example 4,

As shown in Figure 8, the difference between embodiment 4 and embodiment 1 is that the pulse groove 23 is provided with several paths on the lower end face of the pulse wheel, the groove width of several pulse grooves is different, and the groove width of several pulse grooves is different. Arranged in an arithmetic sequence.

The invention provides an electric pulse device, which can break off long sawdust on a band sawing machine, improve cutting precision and cutting efficiency, and has high structural reliability. service life.

Claims (8)

1. A servo electric pulse structure, used for band sawing machines, comprising a mounting block fixed on the saw blade frame of the band sawing machine, the lower end of the mounting block is provided with a saw blade holding device, and it is characterized in that the mounting block is provided with a servo motor and Pulse wheel, the pulse wheel is provided with a pulse groove, the lower side of the pulse wheel is equipped with a pulse block, the pulse block is located on the upper side of the saw blade holding device, the lower end of the pulse block is matched with the saw blade holding device, and the installation block is provided with The bracket, the servo motor is fixed on the bracket, the saw blade holding device includes two sets of saw blade pressing wheels set oppositely and two limit blocks set oppositely, the shape of the pulse block is a cuboid, and the limit block is set in the installation block to match the pulse block One end of the pulse block is rotatably connected in the limit chute, and the other end of the pulse block is rotated with a pressure block on the lower side, and the pressure block and the limit block are arranged in contact; the bracket is provided with a static energy-absorbing device, The static energy-absorbing device includes a shell, which is provided with three longitudinally continuous liquid storage chambers separated by partitions, energy-absorbing liquid is provided in the liquid storage chamber, and capillary holes are provided on the partition plate; the three liquid storage chambers A return chamber is provided on the same side, the upper end of the return chamber communicates with the upper end of the uppermost liquid storage chamber, and the lower end of the return chamber communicates with the lower end of the lowermost liquid storage chamber. 2 . The servo electric pulse structure according to claim 1 , wherein two groups of the servo electric pulse structure are arranged on the band sawing machine. 3 . 3. A kind of servo electric pulse structure according to claim 1, characterized in that, the outer end of the pulse block is provided with a rotating shaft, and a matching wheel is rotated on the rotating shaft, and the axis of the matching wheel is perpendicular to the axis of the pulse wheel. The lower end of the pulse wheel is arranged in contact with the peripheral side of the mating wheel. 4. A servo electric pulse structure according to claim 1, characterized in that eight pulse grooves are arranged on the lower end surface of the pulse wheel, and the eight pulse grooves are arranged in a circular array around the axis of the pulse wheel. 5. A servo electric pulse structure according to claim 1, characterized in that, the support is also provided with a bearing seat, and a bearing and a rotating shaft are arranged in the bearing seat, and the rotating shaft and the motor shaft of the servo motor are connected through a joint. Shaft connection. 6 . The servo electric pulse structure according to claim 1 , wherein a guide column is provided at one end of the pressure block, and a guide groove matching the guide column is provided in the pulse block. 7 . 7. A servo electric pulse structure according to claim 3, characterized in that, the lower end of the pulse wheel is in the shape of a ring, and the arc surface of the pulse groove is arranged to match the peripheral surface of the mating wheel. 8. A servo electric pulse structure according to claim 1, characterized in that, a rotating vane is arranged in the return cavity, and the rotating vane is fixed on an energy-absorbing shaft connected to the wall of the return cavity, and the energy-absorbing shaft and the return flow The walls of the cavity are connected in a rotational seal, and the outer end of the energy-absorbing shaft is provided with energy-absorbing blades.

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