CN113478012B

CN113478012B - Automatic sawing machine

Info

Publication number: CN113478012B
Application number: CN202110748792.0A
Authority: CN
Inventors: 任仲泰
Original assignee: Daqiao Copper Shenzhen Co ltd
Current assignee: Daqiao Copper Shenzhen Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-05-31
Anticipated expiration: 2041-07-02
Also published as: CN113478012A

Abstract

The invention provides an automatic sawing machine which comprises a base, a workbench arranged at the top of the base, a hacksaw frame hinged on the base, a handle arranged on the hacksaw frame and used for driving the hacksaw frame to rotate, a hacksaw seat arranged at the bottom of the hacksaw frame in a sliding manner, a saw blade arranged at the bottom of the hacksaw seat and a driving mechanism used for driving the hacksaw seat to reciprocate, wherein a placing groove is formed in the bottom of the hacksaw seat, and the saw blade is connected in the placing groove in a sliding manner; a feeding mechanism is arranged between the hacksaw seat and the saw blade and is used for driving the saw blade to slide along the length direction of the placing groove; and a limiting mechanism is also arranged between the hacksaw seat and the saw blade and is used for limiting the relative sliding between the hacksaw seat and the saw blade. The feeding mechanism is used for controlling the saw blade to move, so that saw teeth on the saw blade are fully utilized, the replacement period of the saw blade is prolonged, and the automatic sawing machine can have higher use efficiency.

Description

Automatic sawing machine

Technical Field

The present invention relates to sawing machines, and more particularly, to an automatic sawing machine.

Background

At present, chinese patent with publication number CN203401152U discloses a hacksaw machine, which comprises a base, a worktable disposed on the base for placing a workpiece, a hacksaw frame rotatably disposed on the base, a handle disposed at the front end of the hacksaw frame for driving the hacksaw frame to rotate, a slide rail disposed on the hacksaw frame, a hacksaw slidably disposed on the slide rail, a saw blade mounted on the hacksaw, and a driving mechanism for driving the hacksaw to reciprocate on the slide rail.

When the hacksaw machine is used, a workpiece to be processed is placed on the workbench to be clamped and fixed, the hacksaw frame is rotated to one side of the workpiece through the handle, so that the saw blade is abutted to the workpiece, and the saw blade is controlled to slide back and forth through the driving mechanism to saw the workpiece to be processed.

During use of the saw blade to saw a workpiece, the teeth on the saw blade become dull. In order to ensure that the hacksaw machine can have a high sawing efficiency, it is necessary to replace the saw blade with a new one after the saw teeth have become dull. However, only a small portion of the teeth of the saw blade can contact the workpiece during use, which greatly shortens the saw blade replacement cycle and reduces the efficiency of the hacksaw machine.

Disclosure of Invention

In view of the above, the present invention is directed to an automatic sawing machine having advantages of high efficiency and long saw blade replacement period.

In order to solve the technical problems, the technical scheme of the invention is as follows: an automatic sawing machine comprises a base, a workbench arranged at the top of the base, a hacksaw frame hinged on the base, a handle arranged on the hacksaw frame and used for driving the hacksaw frame to rotate, a hacksaw seat arranged at the bottom of the hacksaw frame in a sliding way, a saw blade arranged at the bottom of the hacksaw seat and a driving mechanism used for driving the hacksaw seat to reciprocate,

a placing groove is formed in the bottom of the hacksaw seat, and the saw blade is connected in the placing groove in a sliding manner;

a feeding mechanism is arranged between the hacksaw seat and the saw blade and is used for driving the saw blade to slide along the length direction of the placing groove;

and a limiting mechanism is further arranged between the hacksaw seat and the saw blade and is used for limiting the relative sliding between the hacksaw seat and the saw blade.

Through above-mentioned technical scheme, during the use, will treat that the work piece of processing is placed the workstation and is pressed from both sides tightly, rotates to workstation one side through handle control hacksaw frame for the top contact of saw bit and work piece, through actuating mechanism control saw bit round trip movement, be used for saw cutting the work piece.

When the saw teeth contacted with the workpiece become dull and influence the use efficiency of the automatic sawing machine, the limitation of the limiting mechanism on the saw blade is removed, so that the saw blade slides on the hacksaw seat. Then the saw blade is driven by the feeding mechanism to move along the length direction of the placing groove, so that the dull saw teeth are staggered with the workpiece. When the blunt saw teeth move to the position where the saw teeth can not contact with the workpiece, the saw blade is limited by the limiting mechanism, so that the saw blade and the hacksaw seat are not easy to slide relatively.

The feeding mechanism is used for controlling the saw blade to move, so that saw teeth on the saw blade are fully utilized, the replacement period of the saw blade is prolonged, and the automatic sawing machine can have higher use efficiency.

Preferably, the locating slot is arranged at the inner slot wall of the placing slot, the locating slot extends along the length direction of the placing slot, the side wall of the saw blade is provided with a locating strip, and the locating strip is connected in the locating slot in a sliding manner.

Through above-mentioned technical scheme, when feed mechanism control saw bit when the standing groove is inside to slide, the location strip slides in the constant head tank. The positioning strip and the positioning groove are mutually matched to limit and guide the saw blade, so that the saw blade is not easy to deviate in the vertical direction in the sliding process.

Preferably, the feeding mechanism comprises a counter, a controller and an actuator, the counter is used for recording the reciprocating times of the saw blade, and when the reciprocating times of the saw blade recorded by the counter reaches a preset value, the controller controls the actuator to be opened so as to push the saw blade to move.

Through above-mentioned technical scheme, when using the saw bit to saw cut the work piece, the counter can be with the reciprocal number of times record of saw bit, and when the reciprocal number of times of saw bit reached the default, the sawtooth with the work piece contact on the saw bit has become dull, and the steerable executor of controller is opened this moment for promote the saw bit and remove, make on the saw bit that the sawtooth that does not use remove to contact with the work piece, be used for resumeing bow saw bit saw cut efficiency.

Preferably, the counter includes a one-way feeding portion and an intermittent feeding portion;

the unidirectional feeding part comprises a pawl arranged at the side part of the saw blade, a ratchet wheel rotationally arranged on the side wall of the hacksaw seat and an elastic sheet used for tightly pressing the pawl against the ratchet wheel;

the intermittent feeding part comprises a driving plate and a grooved wheel, the driving plate is coaxially arranged on the side wall of the ratchet wheel, the grooved wheel is rotatably connected to the side wall of the hacksaw seat, a movable groove for the grooved wheel to rotate is formed in the side wall of the driving plate, a round pin is arranged in the movable groove and fixed on the ratchet wheel, a plurality of locking arcs are uniformly arranged at the side part of the grooved wheel, the locking arcs can be tightly attached to the outer wall of the driving plate, a radial groove is formed between every two adjacent locking arcs, and the radial groove is used for the round pin to be clamped;

through the technical scheme, the driving mechanism controls the saw blade to move towards the right side, the ratchets can push the ratchets to rotate at a certain angle in the circumferential direction when the ratchets are abutted to the ratchets, and when the ratchets are staggered from the ratchets, the ratchets cannot continuously push the ratchets, and the rotation of the ratchets stops at the moment. When the driving mechanism controls the saw blade to move leftwards, the ratchet wheel can push the ratchet to rotate, so that the state of the ratchet wheel is not easy to change. The reciprocating times of the saw blade are recorded through the rotation angle of the ratchet wheel.

When the ratchet wheel rotates, the ratchet wheel can drive the drive plate to rotate. When the outer wall of the dial is in contact with the locking arc of the sheave, the dial may restrict the sheave from rotating. When the round pin enters the radial groove, the driving plate can drive the grooved wheel to rotate through the round pin. The reciprocating times of the saw blade which can be recorded by the counter are increased through the rotation of the grooved wheel.

Preferably, the controller comprises a first contact piece arranged on the hacksaw seat and a second contact piece arranged on the grooved wheel, and the actuator is started when the first contact piece is in contact with the second contact piece.

Through above-mentioned technical scheme, the sheave can drive contact two and remove at the rotation in-process, and when contact two and contact one contacted, the executor started and control the saw bit and remove.

Preferably, the actuator comprises a servo motor, a gear arranged on an output shaft of the servo motor, and a rack connected to the workbench in a sliding manner, wherein the rack is engaged with the gear, and the rack is fixedly connected with the saw blade.

Through above-mentioned technical scheme, but the gear can be driven when servo motor starts and carry out circumferential direction, and the rack that accessible and it meshed when the gear rotates orders about the saw bit and removes for the sawtooth that does not use in the saw bit is close to and treats the processing work piece.

Preferably, the lateral wall department of saw bit runs through and is provided with a plurality of locating holes, and a plurality of the locating hole is along the length direction evenly distributed of saw bit, stop gear includes spacing post and spacing spring, spacing post run through in hacksaw seat and insert to the locating hole, the both ends of spacing spring respectively with hacksaw seat with spacing union coupling, spacing spring makes through elasticity spacing post stops in the locating hole.

Through above-mentioned technical scheme, when pulling out spacing post from the locating hole, stop gear removes the limiting displacement of saw bit, can use the executor to be used for controlling the saw bit and remove this moment. When the saw blade moves to a proper position and the positioning hole in the saw blade is aligned with the limiting post, the limiting post is loosened, the limiting spring enables the limiting post to be inserted into the positioning hole through elasticity, and the limiting post is matched with the positioning hole to limit the saw blade.

Preferably, the outer lane of sheave is provided with the control panel, the control panel along the axial extension of sheave, the both ends of control panel are contradicted each other, the control panel deviates from the terminal surface of saw bit is the control surface, the control surface with interval between the saw bit is followed the circumference grow gradually of sheave, be provided with on the tip of spacing post and collude and hold the piece, collude hold with the control surface offsets tightly.

Through above-mentioned technical scheme, during the use, the sheave can drive the control panel and rotate. In the process of the rotation of the control panel, the control panel can gradually pull out the limiting column from the positioning hole through the hooking piece.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

fig. 2 is an enlarged view of a portion a of fig. 1.

Reference numerals: 1. a base; 2. a work table; 3. a hacksaw frame; 4. a handle; 5. a hacksaw base; 6. a saw blade; 7. a drive mechanism; 8. a placement groove; 9. a feed mechanism; 91. a counter; 911. a one-way feeding section; 9111. a pawl; 9112. a ratchet wheel; 9113. a spring plate; 912. an intermittent feeding section; 9121. a dial; 9122. a grooved wheel; 92. a controller; 921. a first contact piece; 922. a second contact piece; 93. an actuator; 931. a servo motor; 932. a gear; 933. a rack; 10. a limiting mechanism; 101. a limiting post; 102. a limiting spring; 11. positioning a groove; 12. a positioning bar; 13. a movable groove; 14. a round pin; 15. locking the arc; 16. a radial slot; 17. positioning holes; 18. a control panel; 19. a control plane; 20. a hooking member.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

An automatic sawing machine is shown in figures 1 and 2 and comprises a base 1, a workbench 2 arranged at the top of the base 1, a hacksaw frame 3 hinged at the edge of the top of the base 1, a handle 4 arranged on the hacksaw frame 3 and used for driving the hacksaw frame 3 to rotate, a hacksaw seat 5 arranged at the bottom of the hacksaw frame 3 in a sliding manner, a saw blade 6 arranged at the bottom of the hacksaw seat 5 and a driving mechanism 7 arranged on the hacksaw seat 5 and used for driving the hacksaw seat 5 to reciprocate.

The bottom of hacksaw seat 5 has been seted up standing groove 8, and saw bit 6 slides and connects in standing groove 8. Constant head tank 11 has been seted up to the interior cell wall department of standing groove 8, and constant head tank 11 extends along the length direction of standing groove 8, and the lateral wall department of saw bit 6 is provided with location strip 12, and location strip 12 slides and connects in constant head tank 11. The positioning strip 12 and the positioning groove 11 are matched to limit and guide the saw blade 6, so that the saw blade 6 is not easy to deviate in the sliding process.

A feeding mechanism 9 is arranged between the hacksaw seat 5 and the saw blade 6, and the feeding mechanism 9 is used for driving the saw blade 6 to slide along the length direction of the placing groove 8.

The feeding mechanism 9 includes a counter 91, a controller 92, and an actuator 93. The counter 91 is used for recording the reciprocating times of the saw blade 6, and when the reciprocating times of the saw blade 6 recorded by the counter 91 reach a preset value, the controller 92 opens the actuator 93.

The counter 91 includes a one-way feeding unit 911 and an intermittent feeding unit 912. The one-way feeding portion 911 includes a pawl 9111 hinged at a side portion of the saw blade 6, a ratchet 9112 rotatably provided at a side wall of the hacksaw holder 5, and an elastic piece 9113 provided on the saw blade 6 to abut the pawl 9111 against the ratchet 9112. When the saw blade 6 moves to one side of the hinge point of the hacksaw seat 5 and the pawl 9111 contacts with the ratchet 9112, the pawl 9111 can push the ratchet 9112 to rotate. The intermittent feed portion 912 includes a dial 9121 coaxially provided on a side wall of the ratchet 9112, and a sheave 9122 rotatably attached to a side wall of the hacksaw holder 5. A movable groove 13 for the grooved wheel 9122 to rotate is formed in the side wall of the drive plate 9121, a round pin 14 is arranged in the movable groove 13, the round pin 14 is fixed on the ratchet wheel 9112, and the round pin 14 falls on an extension line of the outer ring of the drive plate 9121. A plurality of locking arcs 15 are uniformly arranged at the side part of the grooved wheel 9122, and the locking arcs 15 are uniformly distributed along the circumferential direction of the drive plate 9121. When the locking arc 15 abuts against the outer wall of the dial 9121, the rotation of the sheave 9122 is restricted by the dial 9121. A radial groove 16 is provided between two adjacent locking arcs 15, and the radial groove 16 extends in the radial direction of the sheave 9122. When the round pin 14 is snapped into the radial slot 16, the dial 9121 may drive the sheave 9122 to rotate via the round pin 14.

The controller 92 includes a first contact 921 disposed on the hacksaw holder 5 and a second contact 922 disposed on the slotted wheel 9122. When contact one 921 contacts contact two 922, actuator 93 is activated.

The actuator 93 comprises a servo motor 931, a gear 932 arranged on an output shaft of the servo motor 931 and a rack 933 connected to the workbench 2 in a sliding mode, wherein the rack 933 is meshed with the gear 932, and the rack 933 is fixedly connected with the saw blade 6. When the servo motor 931 is started, the gear 932 is controlled to rotate in the circumferential direction, and the gear 932 drives the saw blade 6 to move through the rack 933 engaged with the gear 932.

A limiting mechanism 10 is further arranged between the hacksaw seat 5 and the saw blade 6, and the limiting mechanism 10 is used for limiting the relative sliding between the hacksaw seat 5 and the saw blade 6.

The side wall of the saw blade 6 is provided with a plurality of positioning holes 17 in a penetrating manner, and the positioning holes 17 are uniformly distributed along the length direction of the saw blade 6. The limiting mechanism 10 includes a limiting post 101 and a limiting spring 102. The position-limiting post 101 penetrates through the hacksaw base 5 and is inserted into the positioning hole 17, and the position-limiting post 101 is matched with the positioning hole 17 to limit the saw blade 6. The two ends of the limit spring 102 are respectively connected with the hacksaw seat 5 and the limit post 101, and the limit spring 102 makes the limit post 101 stay in the positioning hole 17 through elastic force.

The outer ring of sheave 9122 is provided with control panel 18, and control panel 18's both ends are contradicted each other. The end surface of the control plate 18 facing away from the saw blade 6 is a control surface 19, and the distance between the control surface 19 and the saw blade 6 gradually increases along the circumferential direction of the grooved wheel 9122. The end of the limit post 101 is provided with a hook 20, and the hook 20 is pressed against the control surface 19.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides an automatic sawing machine, includes base (1), sets up workstation (2) at base (1) top, articulate hacksaw frame (3) on base (1), set up and be used for driving hacksaw frame (3) pivoted handle (4), slide on hacksaw frame (3) and set up hacksaw seat (5), the setting of hacksaw frame (3) bottom are in saw bit (6) of hacksaw seat (5) bottom, be used for the drive hacksaw seat (5) reciprocating motion's actuating mechanism (7), characterized by:

a placing groove (8) is formed in the bottom of the hacksaw seat (5), and the saw blade (6) is connected in the placing groove (8) in a sliding manner;

a feeding mechanism (9) is arranged between the hacksaw seat (5) and the saw blade (6), and the feeding mechanism (9) is used for driving the saw blade (6) to slide along the length direction of the placing groove (8);

a limiting mechanism (10) is further arranged between the hacksaw seat (5) and the saw blade (6), and the limiting mechanism (10) is used for limiting the relative sliding between the hacksaw seat (5) and the saw blade (6);

the feeding mechanism (9) comprises a counter (91), a controller (92) and an actuator (93), wherein the counter (91) is used for recording the reciprocating times of the saw blade (6), and when the reciprocating times of the saw blade (6) recorded by the counter (91) reach a preset value, the controller (92) controls the actuator (93) to be opened so as to push the saw blade (6) to move;

the counter (91) comprises a one-way feeding unit (911) and an intermittent feeding unit (912);

the one-way feeding part (911) comprises a pawl (9111) arranged at the side part of the saw blade (6), a ratchet wheel (9112) rotatably arranged on the side wall of the hacksaw seat (5), and an elastic sheet (9113) used for pressing the pawl (9111) against the ratchet wheel (9112);

the intermittent feeding part (912) comprises a drive plate (9121) coaxially arranged on the side wall of the ratchet wheel (9112) and a grooved wheel (9122) rotatably connected to the side wall of the hacksaw seat (5), a movable groove (13) for the grooved wheel (9122) to rotate is formed in the side wall of the drive plate (9121), a round pin (14) is arranged inside the movable groove (13), the round pin (14) is fixed on the ratchet wheel (9112), a plurality of locking arcs (15) are uniformly arranged on the side part of the grooved wheel (9122), the locking arcs (15) can be tightly attached to the outer wall of the drive plate (9121), a radial groove (16) is formed between every two adjacent locking arcs (15), and the radial groove (16) is used for the round pin (14) to be clamped in;

the controller (92) comprises a first contact piece (921) arranged on the hacksaw seat (5) and a second contact piece (922) arranged on the grooved wheel (9122), and when the first contact piece (921) is in contact with the second contact piece (922), the actuator (93) is started.

2. The automatic sawing machine according to claim 1, wherein: locating slot (11) have been seted up to the inner tank wall department of standing groove (8), locating slot (11) along the length direction of standing groove (8) extends, the lateral wall department of saw bit (6) is provided with location strip (12), location strip (12) slide and connect in locating slot (11).

3. The automatic sawing machine according to claim 1, wherein: the actuator (93) comprises a servo motor (931), a gear (932) arranged on an output shaft of the servo motor (931) and a rack (933) connected to the workbench (2) in a sliding mode, the rack (933) is meshed with the gear (932), and the rack (933) is fixedly connected with the saw blade (6).

4. The automatic sawing machine according to claim 1, wherein: the saw blade is characterized in that a plurality of positioning holes (17) are formed in the side wall of the saw blade (6) in a penetrating mode, the positioning holes (17) are evenly distributed along the length direction of the saw blade (6), the limiting mechanism (10) comprises limiting columns (101) and limiting springs (102), the limiting columns (101) penetrate through the hacksaw seat (5) and are inserted into the positioning holes (17), two ends of the limiting springs (102) are connected with the hacksaw seat (5) and the limiting columns (101) respectively, and the limiting springs (102) enable the limiting columns (101) to stay in the positioning holes (17) through elastic force.

5. The automatic sawing machine according to claim 4, wherein: the outer lane of sheave (9122) is provided with control panel (18), control panel (18) are along the axial extension of sheave (9122), the both ends of control panel (18) are contradicted each other, control panel (18) deviate from the terminal surface of saw bit (6) is control surface (19), control surface (19) with interval between saw bit (6) is followed the circumference grow gradually of sheave (9122), be provided with on the tip of spacing post (101) and collude and hold piece (20), collude hold piece (20) with control surface (19) counterbalance.