CN112643153A

CN112643153A - Thread opening device and thread opening method for furniture connecting piece

Info

Publication number: CN112643153A
Application number: CN202011451772.9A
Authority: CN
Inventors: 付强
Original assignee: Oukai Technology Jiaxing Co Ltd
Current assignee: Oukai Technology Jiaxing Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-04-13
Anticipated expiration: 2040-12-09
Also published as: CN112643153B

Abstract

The invention discloses a thread opening device of a furniture connecting piece, which relates to the technical field of screw taps and comprises a platform, wherein a feed inlet is formed in the center of the surface of the platform, a through hole is formed in the tail end of the feed inlet, a workbench is arranged in the through hole, a cutting machine is arranged at the rear end of the workbench and is movably connected with the platform, a liquid collecting barrel is arranged on one side of the cutting machine, a conveying guide pipe is arranged at the top of the liquid collecting barrel, a water pump is arranged in the inner cavity of the liquid collecting barrel, the output end of the water pump is connected with one end of the conveying guide pipe, and one end, far away; the invention is provided with the sunken workbench, the workbench is placed in the platform during cutting, the cutting fluid can be effectively prevented from being sprayed everywhere to pollute a working chamber during spraying of the cutting fluid, and meanwhile, the cutting fluid is sprayed out from the bottom of the screw tap during use, so that cutting can be performed by aiming at an opening during cutting, the spraying accuracy of the cutting fluid is increased, and the production efficiency can be improved.

Description

Thread opening device and thread opening method for furniture connecting piece

Technical Field

The invention relates to the technical field of screw taps, in particular to a thread opening device and a thread opening method for a furniture connecting piece.

Background

In the case of threading a furniture connecting member, a thread cutting tap is generally used, and an incomplete thread having a complete shape, which is cut from the top, is cut in the circumferential direction by a spiral groove or a linear groove from the tip of a tapered cut portion toward the complete thread portion, and a cutting edge formed along the spiral groove or the linear groove is formed on one end surface of the cut thread, that is, the cut end surface.

At present when seting up the screw thread to material batch production, the screw thread is seted up to manual operation drilling machine or lathe for the majority, and in order to make the cutting more convenient, need spray the cutting fluid to the position of cutting when the cutting, nevertheless hardly the accuracy sprays corresponding position, and the cutting fluid splashes everywhere easily simultaneously, pollutes operational environment.

Disclosure of Invention

In order to solve the defects mentioned in the background technology, the invention aims to provide a thread opening device of a furniture connecting piece and a thread opening method thereof, the invention is provided with a sunken workbench, the workbench is placed in a platform during cutting, and cutting fluid can be effectively prevented from being sprayed everywhere to pollute a working chamber during spraying the cutting fluid;

meanwhile, when the cutting tool is used, the cutting fluid is arranged at the bottom of the screw tap and is sprayed out, so that the cutting can be performed aiming at the opening during cutting, the spraying accuracy of the cutting fluid is improved, and the production efficiency can be improved.

The purpose of the invention can be realized by the following technical scheme:

a thread opening device of a furniture connecting piece comprises a platform, wherein a feed inlet is formed in the center of the surface of the platform, a through hole is formed in the tail end of the feed inlet, a workbench is arranged in the through hole, a cutting machine is arranged at the rear end of the workbench and is movably connected with the platform, a liquid collecting barrel is arranged on one side of the cutting machine, a conveying guide pipe is arranged at the top of the liquid collecting barrel, a water pump is arranged in an inner cavity of the liquid collecting barrel, the output end of the water pump is connected with one end of the conveying guide pipe, one end, far away from the liquid collecting barrel, of the conveying guide pipe extends into the cutting machine, a fixed bottom plate is fixedly connected in the through hole and at the bottom of the workbench, a lifting mechanism is arranged between the fixed bottom plate and the workbench and is movably connected with the fixed bottom plate through the lifting mechanism;

the cutting machine comprises a rack, a base is fixedly connected to the bottom of the rack, a lifting sliding plate is connected to the side wall of the rack in a sliding mode, a driving roller is connected in the rack in a rotating mode and meshed with the lifting sliding plate, the driving roller drives the lifting sliding plate to do lifting motion, a bracket is welded to the surface of the lifting sliding plate, a cutting motor is embedded in the bracket, the output end of the cutting motor is connected with a screw tap, the screw tap is arranged in a hollow mode, a conveying guide pipe extends into the screw tap from the top of the screw tap, the screw tap and the conveying guide pipe rotate relatively, a cutting fluid outlet is formed in the inner side wall of the bottom of the screw tap, a;

the utility model discloses a push pedal, including the platform, the platform is provided with the push pedal on the surface of platform and one side of through-hole, the front end of push pedal stretches into in the workstation, the bottom of push pedal and the surface of platform are seted up flutedly, fixedly connected with sideslip motor in the recess, the output of sideslip motor is connected with the gear, the trapezoidal tooth of meshing mutually with the gear is seted up to the bottom surface of push pedal, the discharge gate has been seted up to one side inside wall that the push pedal was kept away from to the through-hole, one side swing joint who is close to the through-hole in the discharge gate has.

Furthermore, a notch is formed in the bottom of the base, a sliding rail is fixedly connected to the surface of the platform, the base is sleeved on the surface of the sliding rail and is connected with the platform in a sliding mode through the sliding rail, a guide wheel is arranged at the rear end of the base, a motor is arranged in the base and drives the guide wheel to rotate, a channel is formed in the rear end of the sliding rail, and the guide wheel is located in the channel.

Further, shutoff mechanism includes the movable block, the lateral wall welding of movable block has the shutoff piece, the shutoff piece hugs closely in the inside wall of screw tap, and the shutoff piece is sealed with the cutting fluid export, the movable block passes through shutoff piece and screw tap sliding connection, the welding of bottom center department of movable block has the driving block, partial driving block outwards stretches out from the bottom of screw tap, the top of movable block is provided with the fixed plate, the fixed plate welds in the inside wall of screw tap, be provided with the elastic component between movable block and the fixed plate, and the movable block is connected with the fixed plate through the elastic component.

Further, the riser all has been welded at the top both ends of workstation, is provided with little cylinder in the riser, is provided with splint in the lateral wall of riser inwards, and two splint are mirror symmetry, and the lateral wall that the expansion end of little cylinder runs through the riser is connected with splint, and little cylinder drive splint move towards the center department of workstation.

Further, elevating system includes two sets of smooth groups, and smooth group includes the supporting shoe, and the supporting shoe is fixed in the bottom of workstation, and the bottom both sides of supporting shoe all articulate there is the movable rod, and the bottom of movable rod is provided with the removal slider, and the movable rod is articulated with the removal slider, and the fixed baseplate's surface is seted up and is removed slider matched with spout, and two removal sliders of same group are opposite movements.

Further, PMKD's surface is provided with elevator motor, and elevator motor's output is connected with two-way threaded rod, and opposite thread groove has been seted up respectively on two end surfaces of two-way threaded rod, is provided with even board between two relative removal sliders in two sets of smooth groups, and even both ends of board weld with the removal slider of both sides respectively, and two even boards are all overlapped the surface of locating two-way threaded rod, and two even boards are located the different thread section department in two-way threaded rod surface respectively.

Further, the floodgate machine includes the mount, and the both ends of mount are located the both sides of feed inlet respectively, and the inner chamber of mount is provided with the baffle, and the movable groove has been seted up to the inside wall of mount, and the baffle inlays in the movable groove, and the baffle slides from top to bottom along the movable groove, and the baffle can contact the feed inlet downwards.

Further, fixedly connected with driving motor is located at the top center of mount, and driving motor's output is connected with the lead screw, and in the lead screw ran through the top of mount and stretched into the baffle downwards, the lead screw rotated with the mount and linked to each other, and the baffle was seted up with lead screw matched with thread groove, and the baffle linked to each other with the lead screw thread.

The method for opening the threads of the furniture connecting piece comprises the following steps of:

step one, slowly pushing the furniture connecting piece into a workbench along a feeding hole, and when a first connecting piece enters the workbench, dropping a gate to separate the connecting pieces behind;

secondly, the lifting mechanism drives the workbench to move downwards along the through hole until the workbench is flush with the waste liquid outlet;

step three, starting the cutting machine and a water pump in the liquid collecting barrel, opening the connecting piece by the cutting machine, and spraying cutting liquid to the opening;

and step four, after the hole is opened, the workbench moves upwards, and then the connecting piece is pushed out from the discharge hole through a push plate, and the steps are carried out in sequence in a circulating reciprocating manner.

The invention has the beneficial effects that:

1. the invention is provided with the sunken workbench, the workbench is placed in the platform during cutting, and cutting fluid can be effectively prevented from being sprayed everywhere to pollute a working chamber during spraying the cutting fluid;

2. when the cutting tool is used, the cutting fluid is arranged at the bottom of the screw tap and is sprayed out, so that the cutting can be performed at the opening during cutting, the spraying accuracy of the cutting fluid is improved, and the production efficiency can be improved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the platform structure of the present invention;

FIG. 3 is a cross-sectional view of the platform of the present invention;

FIG. 4 is a schematic view of the construction of the cutting machine of the present invention;

FIG. 5 is a cross-sectional view of the tap of the present invention;

FIG. 6 is a schematic view of the plugging mechanism of the present invention;

FIG. 7 is a schematic view of the table of the present invention;

FIG. 8 is a schematic view of the lift mechanism of the present invention;

FIG. 9 is a schematic view of the push plate structure of the present invention;

FIG. 10 is a schematic view of the gate structure of the present invention.

In the figure: 1. a platform; 11. a feed inlet; 12. a discharge port; 121. a movable baffle; 13. a waste liquid outlet; 14. a slide rail; 2. a cutting machine; 21. a frame; 22. a base; 221. a notch; 23. a guide wheel; 24. a lifting slide plate; 25. a bracket; 26. cutting the motor; 27. a screw tap; 271. a cutting fluid outlet; 28. a plugging mechanism; 281. a movable block; 282. a plugging block; 283. a drive block; 284. a fixing plate; 285. an elastic member; 3. a liquid collecting barrel; 4. a delivery catheter; 5. a work table; 51. a vertical plate; 52. a small cylinder; 53. a splint; 6. a lifting mechanism; 61. a support block; 62. a movable rod; 63. moving the slide block; 64. connecting plates; 65. a lifting motor; 66. a bidirectional threaded rod; 7. fixing the bottom plate; 8. pushing the plate; 80. trapezoidal teeth; 81. a traversing motor; 82. a gear; 9. a gate machine; 91. a fixed mount; 92. a partition plate; 93. a drive motor; 94. and a lead screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

A thread opening device of a furniture connecting piece is disclosed, as shown in figure 1-3, comprising a platform 1, a feed inlet 11 is arranged at the center of the surface of the platform 1, a through hole is arranged at the tail end of the feed inlet 11, a workbench 5 is arranged in the through hole, the workbench 5 can move downwards into the platform 1, a cutting machine 2 is arranged at the rear end of the workbench 5, the cutting machine 2 is movably connected with the platform 1, a liquid collecting barrel 3 is arranged at one side of the cutting machine 2, a conveying conduit 4 is arranged at the top of the liquid collecting barrel 3, a water pump is arranged in the inner cavity of the liquid collecting barrel 3, the output end of the water pump is connected with one end of the conveying conduit 4, one end of the conveying conduit 4 far away from the liquid collecting barrel 3 extends into the cutting machine 2, a fixed bottom plate 7 is fixedly connected with the bottom of the workbench 5 in the through hole, a lifting mechanism 6 is arranged between the fixed bottom plate 7 and the, the gate 9 is arranged at the front end of the through hole and on the surface of the platform 1, the gate 9 is positioned right above the feeding hole 11, the furniture connecting frame enters along the feeding hole 11, and after the first connecting piece enters the workbench 5, the gate 9 falls down to separate the connecting pieces behind.

As shown in fig. 3 and 9, the surface of the platform 1 and one side of the through hole are provided with the push plate 8, the front end of the push plate 8 extends into the workbench 5, the bottom of the push plate 8 and the surface of the platform 1 are provided with a groove, the groove is internally and fixedly connected with a transverse motor 81, the output end of the transverse motor 81 is connected with a gear 82, the bottom surface of the push plate 8 is provided with trapezoidal teeth 80 meshed with the gear 82, the through hole is far away from the inner side wall of one side of the push plate 8 and is provided with a discharge hole 12, one side of the discharge hole 12 is movably connected with a movable baffle 121, the movable baffle 121 is turned upwards and opened, and the waste liquid outlet.

As shown in fig. 4 and 5, the cutting machine 2 includes a machine frame 21, a base 22 is fixedly connected to the bottom of the machine frame 21, a lifting slide plate 24 is slidably connected to a side wall of the machine frame 21, a driving roller is rotatably connected to the machine frame 21 and engaged with the lifting slide plate 24, the driving roller drives the lifting slide plate 24 to move up and down, a bracket 25 is welded to the surface of the lifting slide plate 24, a cutting motor 26 is embedded in the bracket 25, a tap 27 is connected to an output end of the cutting motor 26, the tap 27 is hollow, the conveying pipe 4 extends into the tap 27 from the top of the tap 27, the tap 27 rotates relative to the conveying pipe 4, a cutting fluid outlet 271 is formed in the inner side wall of the bottom of the tap 27, a plugging mechanism 28 is arranged at the bottom of an inner cavity of the.

Breach 221 has been seted up to the bottom of base 22, and the fixed surface of platform 1 is connected with slide rail 14, and base 22 overlaps in the surface of slide rail 14, and base 22 passes through slide rail 14 and platform 1 sliding connection, and the rear end of base 22 is provided with leading wheel 23, is provided with the motor in the base 22, and motor drive leading wheel 23 rotates, and the passageway has been seted up to the rear end of slide rail 14, and leading wheel 23 is located the passageway.

As shown in fig. 5 and 6, the sealing mechanism 28 includes a movable block 281, a sealing block 282 is welded on a side wall of the movable block 281, the sealing block 282 is tightly attached to an inner side wall of the tap 27, the sealing block 282 seals the cutting fluid outlet 271, the movable block 281 is slidably connected with the tap 27 through the sealing block 282, a driving block 283 is welded at a bottom center of the movable block 281, a part of the driving block 283 extends outward from a bottom of the tap 27, a fixing plate 284 is provided at a top of the movable block 281, the fixing plate 284 is welded on the inner side wall of the tap 27, an elastic member 285 is provided between the movable block 281 and the fixing plate 284, the movable block 281 is connected with the fixing plate 284 through the elastic member 285, the fixing plate 284 is fixed in the tap 27, the movable block 281 is tightly attached to the bottom of the tap 27 under an elastic force of the elastic member 285, the driving block 283 extends outward, and at this time, the sealing block 282 seals the cutting fluid outlet, the driving block 283 touches the surface of the connecting piece first, so as to extrude inwards, the movable block 281 drives the blocking block 282 to slide upwards, the cutting fluid outlet 271 is exposed, and the cutting fluid can be sprayed outwards from the cutting fluid outlet 271 and just sprayed at the cutting position.

As shown in fig. 7, vertical plates 51 are welded at both ends of the top of the workbench 5, small air cylinders 52 are arranged in the vertical plates 51, clamping plates 53 are arranged in inward side walls of the vertical plates 51, the two clamping plates 53 are mirror-symmetrical, the movable ends of the small air cylinders 52 penetrate through the side walls of the vertical plates 51 to be connected with the clamping plates 53, the small air cylinders 52 drive the clamping plates 53 to move towards the center of the workbench 5, and after the connecting piece drops in the workbench 5, the connecting piece can be clamped by pushing the clamping plates 53 through the small air cylinders 52 on both sides, and the connecting piece is kept more stable during cutting.

As shown in fig. 8, the lifting mechanism 6 includes two sets of sliding sets, each sliding set includes a supporting block 61, the supporting blocks 61 are fixed at the bottom of the workbench 5, two sides of the bottom of the supporting blocks 61 are hinged with movable rods 62, the bottom of each movable rod 62 is provided with a movable slider 63, the movable rods 62 are hinged with the movable sliders 63, the surface of the fixed bottom plate 7 is provided with a sliding groove matched with the movable sliders 63, and the two movable sliders 63 in the same set move oppositely.

The surface of PMKD 7 is provided with elevator motor 65, elevator motor 65's output is connected with two-way threaded rod 66, opposite thread groove has been seted up respectively to the both ends surface of two-way threaded rod 66, be provided with even board 64 between two relative removal sliders 63 in two sets of smooth groups, and the both ends of even board 64 weld with the removal slider 63 of both sides respectively, and two even boards 64 all overlap the surface of locating two-way threaded rod 66, and two even boards 64 are located the different thread section department in two-way threaded rod 66 surface respectively.

As shown in fig. 10, the gate 9 includes a fixing frame 91, two ends of the fixing frame 91 are respectively located at two sides of the feeding port 11, a partition 92 is disposed in an inner cavity of the fixing frame 91, a movable groove is formed in an inner side wall of the fixing frame 91, the partition 92 is embedded in the movable groove, the partition 92 slides up and down along the movable groove, and the partition 92 can contact the feeding port 11 downward, so as to separate a connecting member at the rear end.

Fixed frame 91's top center department fixedly connected with driving motor 93, driving motor 93's output is connected with lead screw 94, in lead screw 94 runs through the top of fixed frame 91 and stretches into baffle 92 downwards, lead screw 94 rotated with fixed frame 91 and links to each other, baffle 92 offered with lead screw 94 matched with thread groove, and baffle 92 and lead screw 94 threaded connection.

firstly, slowly pushing the furniture connecting pieces into a workbench 5 along a feeding hole 11, and driving a screw rod 94 to rotate by a driving motor 93 after a first connecting piece enters the workbench 5, so that a partition plate 92 slides downwards along a fixed frame 91 to separate the following connecting pieces;

step two, starting the lifting motor 65, wherein the lifting motor 65 drives the bidirectional threaded rod 66 to rotate, so that the connecting plates 64 on the two sides are driven to slide towards the two sides, and the working table 5 is driven to move downwards along the through hole until the working table 5 is flush with the waste liquid outlet 13;

step three, starting a water pump in the cutting machine 2 and the liquid collecting barrel 3, opening holes in the connecting piece by the cutting machine 2, enabling cutting liquid to enter the screw tap 27 along the conveying guide pipe 4, enabling the driving block 283 at the bottom of the screw tap 27 to be pressed inwards under stress when the driving block 283 touches the connecting piece, enabling the driving block 283 to drive the blocking block 282 to slide upwards through the movable block 281, and accordingly exposing a cutting liquid outlet 271 and enabling the cutting liquid to be sprayed outwards from the outlet;

and step four, after the hole is opened, the workbench 5 moves upwards, then the transverse moving motor 81 is started, the transverse moving motor 81 drives the gear 82 to rotate, so that the push plate 8 is driven to move towards the workbench 5, the connecting piece is pushed out from the discharge hole 12, and the steps are repeated in sequence in a circulating manner.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. A thread opening device of a furniture connecting piece comprises a platform (1) and is characterized in that a feed inlet (11) is formed in the center of the surface of the platform (1), a through hole is formed in the tail end of the feed inlet (11), a workbench (5) is arranged in the through hole, a cutting machine (2) is arranged at the rear end of the workbench (5), the cutting machine (2) is movably connected with the platform (1), a liquid collecting barrel (3) is arranged on one side of the cutting machine (2), a conveying guide pipe (4) is arranged at the top of the liquid collecting barrel (3), a water pump is arranged in an inner cavity of the liquid collecting barrel (3), the output end of the water pump is connected with one end of the conveying guide pipe (4), one end, far away from the liquid collecting barrel (3), of the conveying guide pipe (4) extends into the cutting machine (2), a fixing bottom plate (7) is fixedly connected with the bottom of the workbench (5) in the through hole, and a lifting mechanism (6), the workbench (5) is movably connected with the fixed bottom plate (7) through the lifting mechanism (6), the gate (9) is arranged at the front end of the through hole and on the surface of the platform (1), and the gate (9) is positioned right above the feeding hole (11);

the cutting machine (2) comprises a rack (21), a base (22) is fixedly connected to the bottom of the rack (21), a lifting sliding plate (24) is connected to the side wall of the rack (21) in a sliding mode, a driving roller is connected to the rack (21) in a rotating mode and meshed with the lifting sliding plate (24), the driving roller drives the lifting sliding plate (24) to do lifting movement, a bracket (25) is welded to the surface of the lifting sliding plate (24), a cutting motor (26) is embedded in the bracket (25), a screw tap (27) is connected to the output end of the cutting motor (26), the screw tap (27) is arranged in a hollow mode, a conveying guide pipe (4) extends into the screw tap (27) from the top of the screw tap (27), the screw tap (27) and the conveying guide pipe (4) rotate relatively, a cutting fluid outlet (271) is formed in the inner side wall of the bottom of the screw tap (27), the plugging mechanism (28) is movably connected with the screw tap (27);

the utility model discloses a workbench for a kitchen, including platform (1), push pedal (8), the front end of push pedal (8) stretches into in workstation (5), the bottom of push pedal (8) and the surface of platform (1) are seted up flutedly, fixedly connected with sideslip motor (81) in the recess, the output of sideslip motor (81) is connected with gear (82), trapezoidal tooth (80) with gear (82) engaged with are seted up to the bottom surface of push pedal (8), one side inside wall that push pedal (8) were kept away from to the through-hole has seted up discharge gate (12), one side swing joint that is close to the through-hole in discharge gate (12) has adjustable fender (121), adjustable fender (121) upwards overturn and open, waste liquid export (13) have been seted up to the bottom of push pedal (8) and the.

2. The screw thread opening device for the furniture connecting piece according to claim 1, wherein a notch (221) is formed in the bottom of the base (22), a sliding rail (14) is fixedly connected to the surface of the platform (1), the base (22) is sleeved on the surface of the sliding rail (14), the base (22) is slidably connected with the platform (1) through the sliding rail (14), a guide wheel (23) is arranged at the rear end of the base (22), a motor is arranged in the base (22), the motor drives the guide wheel (23) to rotate, a channel is formed in the rear end of the sliding rail (14), and the guide wheel (23) is located in the channel.

3. The threading device of a furniture connecting piece according to claim 1, the plugging mechanism (28) comprises a movable block (281), a plugging block (282) is welded on the side wall of the movable block (281), the plugging block (282) is tightly attached to the inner side wall of the screw tap (27), the cutting fluid outlet (271) is sealed by the sealing block (282), the movable block (281) is in sliding connection with the screw tap (27) through the sealing block (282), a driving block (283) is welded at the center of the bottom of the movable block (281), part of the driving block (283) extends outwards from the bottom of the screw tap (27), a fixing plate (284) is arranged at the top of the movable block (281), the fixing plate (284) is welded on the inner side wall of the screw tap (27), an elastic piece (285) is arranged between the movable block (281) and the fixing plate (284), and the movable block (281) is connected with the fixed plate (284) through an elastic member (285).

4. The threading device of the furniture connecting piece according to claim 1, characterized in that vertical plates (51) are welded at both ends of the top of the workbench (5), small cylinders (52) are arranged in the vertical plates (51), clamping plates (53) are arranged in inward side walls of the vertical plates (51), the two clamping plates (53) are mirror-symmetrical, the movable ends of the small cylinders (52) penetrate through the side walls of the vertical plates (51) and are connected with the clamping plates (53), and the small cylinders (52) drive the clamping plates (53) to move towards the center of the workbench (5).

5. The thread opening device for the furniture connecting piece according to claim 1, wherein the lifting mechanism (6) comprises two groups of sliding groups, each sliding group comprises a supporting block (61), each supporting block (61) is fixed at the bottom of the workbench (5), two sides of the bottom of each supporting block (61) are hinged to a movable rod (62), a movable slider (63) is arranged at the bottom of each movable rod (62), each movable rod (62) is hinged to the corresponding movable slider (63), a sliding groove matched with each movable slider (63) is formed in the surface of the fixed bottom plate (7), and the two movable sliders (63) in the same group move oppositely.

6. The threading device of a furniture connecting piece according to claim 5, wherein the surface of the fixed bottom plate (7) is provided with a lifting motor (65), the output end of the lifting motor (65) is connected with a bidirectional threaded rod (66), opposite thread grooves are respectively formed on the surfaces of the two ends of the bidirectional threaded rod (66), a connecting plate (64) is arranged between two opposite moving sliders (63) in the two sets of sliding groups, the two ends of the connecting plate (64) are respectively welded with the moving sliders (63) on the two sides, the two connecting plates (64) are respectively sleeved on the surface of the bidirectional threaded rod (66), and the two connecting plates (64) are respectively positioned at different thread sections on the surface of the bidirectional threaded rod (66).

7. The threading device of the furniture connecting piece according to claim 1, wherein the gate (9) comprises a fixed frame (91), two ends of the fixed frame (91) are respectively located at two sides of the feed port (11), a partition plate (92) is arranged in an inner cavity of the fixed frame (91), a movable groove is formed in the inner side wall of the fixed frame (91), the partition plate (92) is embedded in the movable groove, the partition plate (92) slides up and down along the movable groove, and the partition plate (92) can contact the feed port (11) downwards.

8. The threading device of the furniture connecting piece according to claim 7, wherein a driving motor (93) is fixedly connected to the center of the top of the fixing frame (91), the output end of the driving motor (93) is connected with a lead screw (94), the lead screw (94) penetrates through the top of the fixing frame (91) and extends downwards into the partition plate (92), the lead screw (94) is rotatably connected with the fixing frame (91), the partition plate (92) is provided with a thread groove matched with the lead screw (94), and the partition plate (92) is in threaded connection with the lead screw (94).

9. A method for threading a furniture connecting member using the threading device for a furniture connecting member according to any one of claims 1 to 8, comprising the steps of:

firstly, slowly pushing the furniture connecting pieces into a workbench (5) along a feeding hole (11), and when a first connecting piece enters the workbench (5), dropping a gate (9) to separate the following connecting pieces;

secondly, the lifting mechanism (6) drives the workbench (5) to move downwards along the through hole until the workbench (5) is flush with the waste liquid outlet (13);

step three, starting a water pump in the cutting machine (2) and the liquid collecting barrel (3), perforating the connecting piece by the cutting machine (2), and spraying cutting liquid to the perforated part;

and step four, after the hole is opened, the workbench (5) moves upwards, then the connecting piece is pushed out from the discharge hole (12) through the push plate (8), and the steps are repeated in sequence in a circulating mode.