CN100391811C - Automatic feeding device for small tubes - Google Patents

Abstract

The invention relates to a feeding device for small tubes, which includes: a tube turning mechanism arranged on the working table of the main engine, brackets fixedly connected to both sides of the tube turning mechanism, and a pair of feeding bins installed obliquely on the two brackets respectively. The blanking push rod at the lower part of the silo is set on the side of the tube turning mechanism; its characteristic is that the discharge part of the silo is successively separated from the transition bin and the aisle; the push plate is vertically arranged on the transition bin Between the channel opening of the aisle; the push plate swing mechanism is set on the back of the silo, the push plate swing mechanism is connected with the push plate, and connected with the transmission mechanism of the main engine through the blanking push rod; the gate mechanism is set at the lower part of the aisle; The pipe mechanism is connected with the transmission mechanism of the main engine through the pipe turning push rod. The material feeding process of the invention can automatically control the material tubes to flow out one by one orderly, the filling is efficient and the use is reliable.

Description

Automatic feeding device for small tubes

technical field

The invention relates to a small tube automatic feeding device arranged on a filling machine.

Background technique

Please refer to shown in Fig. 1, the bottom of the silo A1 of the prior art is set as inclined shape, one end at the bottom of the silo is vertically provided with a feeding aisle A3, and a tube loosening device A2 is provided at the bottom of the silo. A tube pusher A4 is provided on one side of the aisle outlet of A1, and a tube turner A5 is provided on the other side of the aisle outlet of the bin A1. The material pipe in the feed bin A1 of the automatic feeding mechanism of the small filling machine of the prior art falls to the bottom after passing through the vertical passage A3, and then is pushed into the pipe turning device A5 by the pipe pusher A4. Although there is a tube loosening device A2 in the silo, because the center of gravity of the material tube is not in the middle of the tube length, the tube body tends to be skewed when it falls freely. If there is resistance somewhere in the aisle A3, it is easy to cause the material tube to be skewed and stuck . And the tube release device A2 is located above the vertical passage, which cannot eliminate the alignment fault in the vertical passage. Since this kind of feeding mechanism often jams during the production process, the production efficiency is reduced and the output is improved; at the same time, the feeding pipe is jammed in the vertical channel, which easily damages the semi-finished product and increases the production cost.

Contents of the invention

The purpose of the present invention is to solve the disadvantages of the existing small tube automatic feeding device that the silo channel is easily blocked when discharging, which not only affects the flow operation but also easily damages the processed parts, so as to provide an automatic control of the feeding process. The material tubes flow out one by one orderly, the filling is efficient, and the reliable small tube automatic feeding device is used.

The purpose of the present invention is achieved like this:

A feeding device for small tubes, which consists of a tube turning mechanism arranged on the working table of the main machine, brackets fixed on both sides of the tube turning mechanism, a pair of feeding bins installed obliquely on the two brackets, and a bottom of the feeding bin It is composed of a blanking push rod and a tube turning push rod placed on one side of the tube turning mechanism; its characteristics are:

The silo includes: a silo body, a transitional silo, an aisle, a push plate, a push plate swing mechanism, a gate mechanism, and a push plate frame; Aisle; the push plate is vertically arranged between the passage opening of the transition bin and the aisle; the push plate frame is arranged between the rear plate of the silo and the push plate; The push plate swing mechanism is connected with the push plate through the pin shaft, and the push plate swing mechanism is connected with the transmission mechanism of the main engine through the blanking push rod; the gate mechanism is set at the lower part of the aisle; transmission mechanism connection.

In the above-mentioned small tube feeding device, wherein, the front of the bin body is provided with a bin door that can be turned outwards, the lower part of the bin door is provided with a pair of hinges connected with the bin body, and the upper part of the bin body is provided with a magnetic door lock.

In the above-mentioned small tube feeding device, wherein, the volume of the transition bin is smaller than that of the feed bin; the height of the aisle matches the diameter of the feed pipe.

In the above-mentioned small tube feeding device, wherein, the push plate is composed of a top plate, a right side plate and a rear plate, and pin grooves and pin sleeves are arranged at intervals on the rear plate; the push plate The frame is an angle steel part, the through hole of the screw on the facade of the push plate frame is a long hole, and its horizontal plane is used as the top surface of the aisle; the back plate of the push plate is fitted with the facade of the push plate frame; Be fixed on the rear panel of the bin body above the aisle.

In the above-mentioned feeding device for small tubes, wherein the push plate swing mechanism includes: a pair of upper and lower brackets, guide rods, pins, pin shafts, springs, retaining columns, push plates, retaining rings; The upper and lower brackets are set on the upper and lower parts of the back of the silo; the guide rod is sleeved in the upper and lower brackets; one end of the pin is set in the guide rod, and the other end of the pin passes through the back of the silo and is set on the In the pin slot of the back plate of the push pedal, and movably connected with the back plate; one end of the pin is arranged in the pin sleeve of the back plate of the push plate, and is movably connected with the push plate frame, and the other end of the pin One end is fixedly connected on the facade of the push plate frame; the spring and the retaining column are arranged on the lower bracket in turn; the side of the pushing plate is provided with a groove, the upper part of the pushing plate is arranged above the retaining column, and the bottom of the pushing plate is connected with the retaining column. The blanking push rod is connected; the retaining ring is set on the upper end of the guide rod and fastened with screws.

In the above-mentioned feeding device for small tubes, wherein, the gate mechanism includes: a bracket, an inner swing rod assembly, an outer swing rod assembly, an inner cam, an outer cam, a cam shaft, a pin shaft, an arm lever, a roller shaft, rollers; the inner swing link assembly is arranged at the front of the bracket, and the outer swing link assembly is arranged at the rear of the support; the inner cam is arranged at the bottom of the inner swing link assembly. The outer cam is arranged at the bottom of the outer swing link assembly, and the cam shaft is fixed in the shaft hole of the inner cam and the outer cam through screws; the pin shaft passes through the holes on the inner swing link assembly and the outer swing link assembly, And it is rotationally connected with the inner swing rod assembly and the outer swing rod assembly; one end of the arm rod is connected with the camshaft, and the other end of the arm rod is connected with one end of the roller shaft. in the groove of the push plate of the plate swing mechanism.

In the above-mentioned feeding device for small tubes, the inner swing rod assembly includes: an inner swing rod, a pair of inner stop rods, a spring column, a spring, and an adjustment block; the two sides of the adjustment block at one end of the inner swing rod A pair of inner retaining rods are vertically arranged on the top, and the inner retaining rods pass through the bottom plate of the aisle; the adjustment block is arranged at the lower part of the inner swing rod, and the adjustment block and the swing rod are connected as a whole through screws; the spring column is vertically arranged on the Between the middle part of the inner swing rod and the bracket, the spring is sleeved outside the spring column; the inner swing rod assembly is arranged on the inner cam.

In the above-mentioned feeding device for small tubes, wherein, the outer swing rod assembly includes: an outer swing rod, a pair of outer stop rods, a spring column, and a spring; Rod, the outer stop rod passes through the bottom plate of the aisle and is fixedly connected with the outer swing rod through a nut; the spring column is vertically arranged between the outer swing rod and the bracket, and the spring is sleeved outside the spring column, and the outer swing rod assembly Set on the outer cam.

In the above-mentioned small tube feeding device, wherein, the other end of the blanking push rod vertically passes through the guide sleeve fixed at the lower part of the worktable and is connected to the transmission mechanism of the main machine.

In the above-mentioned feeding device for small tubes, wherein, the tube turning mechanism includes a box body, a tube turning device, a rotating shaft, and a connecting rod; the upper part of the box body is provided with a tube turning device; the rotating shaft One end is covered with a tube turning device, and the other end of the rotating shaft is connected to the upper part of the connecting rod through a screw; the lower part of the connecting rod is flexibly connected to the turning tube push rod; The transmission mechanism of the main engine is connected.

Compared with the prior art, the present invention has the following advantages and positive effects due to the adoption of the above-mentioned technical solution:

1. The small tube automatic feeding device of the present invention has a transition bin with a volume smaller than that of the bin at the outlet of the bin, so that a small amount of tubes can gradually enter the transition bin, improving the reliability of the feeding process.

2. Since the small tube automatic feeding device of the present invention is provided with a push plate and a push plate mechanism between the transition chamber and the aisle, the arrangement position of the material tubes can be continuously adjusted so that the material tubes are arranged neatly and flow into the aisle in sequence.

3. Since the small tube automatic feeding device of the present invention is provided with an aisle matching the height of the material tube between the transition chamber and the discharge port, multiple empty tubes can only be arranged in one layer and flow out from the discharge port one by one.

4. Since the small tube automatic feeding device of the present invention is provided with a gate mechanism below the aisle, the gate mechanism is provided with an inner and outer swing rod assembly to swing alternately, and the up and down movement of the outer stop rod arranged on the outer swing rod can be controlled Batches of tubes that flow down obliquely flow through or stop, and the inner stop rod set on the inner swing rod can control the tubes to flow out one by one, so as to ensure that the tubes to be filled can flow out of the silo one by one in an orderly manner during the feeding process. Filling in the next process can effectively improve work efficiency and product quality.

Description of drawings

The purpose, specific structural features and advantages of the present invention can be further understood through the following description of an embodiment of the small tube automatic feeding device of the present invention in conjunction with the accompanying drawings. Among them, the attached figure is:

Fig. 1 is a schematic diagram of the structure of a silo in the prior art.

Fig. 2 is a schematic structural view of the automatic feeding device for small tubes of the present invention.

Fig. 3 is a left view of the small tube automatic feeding device of the present invention.

Fig. 4 is a schematic diagram of the warehouse structure of the small tube automatic feeding device of the present invention.

Fig. 5 is a left side view of the bin of the small tube automatic feeding device of the present invention.

Fig. 6 is a structural schematic diagram of the push plate swing mechanism of the small tube automatic feeding device of the present invention.

Fig. 7 is a top view of the gate mechanism of the small tube automatic feeding device of the present invention.

Fig. 8 is a left view of the gate mechanism of the small tube automatic feeding device of the present invention.

Fig. 9 is a schematic diagram of the structure of the inner swing rod of the small tube automatic feeding device of the present invention.

Fig. 10 is a schematic diagram of the structure of the outer swing rod of the small tube automatic feeding device of the present invention.

Detailed ways

Please refer to Fig. 2 and Fig. 3, the feeding device for small tubes includes: tube turning mechanism 1, support 2, a pair of material bins 3, working table 4, blanking push rod 5, tube turning push rod 6; Mechanism 1 is arranged on the working surface 4 of the main engine; the tube turning mechanism 1 includes: a box body 11, a tube turning device 12, a rotating shaft 13, and a connecting rod 14; the upper part of the box body 11 is provided with a tube turning device 12; The other end of the tube turning device 12 is connected to the upper part of the connecting rod 14 by a screw; the lower part of the connecting rod 14 is connected to the tube turning push rod 6, and the other end of the turning tube pushing rod 6 vertically passes through the guide sleeve 61 fixed under the work surface 4 It is connected with the transmission mechanism of the main engine; a pair of brackets 2 are fixedly connected to both sides of the tube turning mechanism 1; a pair of material bins 3 are respectively installed obliquely on the brackets 2 on both sides of the tube turning mechanism 1, and one end of the blanking push rod 5 is connected to At the bottom of the feed bin 3, the other end of the blanking push rod 5 vertically passes through the guide sleeve 51 under the fixed work surface 4 and is connected with the transmission mechanism of the main engine.

Please refer to Fig. 4 and Fig. 5, the silo 3 includes: a bin body 31, a transition bin 32, an aisle 33, a push plate 34, a push plate swing mechanism 35, a gate mechanism 36, and a push plate frame 37; The bottom of the feed bin 3 is set as an inclined plane, and the discharge position warehouse is sequentially separated with a transition bin 32 and an aisle 33, the volume of the transition bin 32 is smaller than that of the feed bin 3; the height of the aisle 33 is compatible with the diameter of the material pipe; The front of the bin body 31 is provided with a material bin door 311 that can be turned outwards. The lower part of the bin body 311 is provided with a pair of hinges 312 to connect with the bin body 31. The upper part of the bin body 31 is provided with a magnetic door lock 313; the push plate 34 is arranged vertically on the Between the passage opening of the transition chamber 32 and the corridor 33; the push plate 34 is formed by connecting the top plate 341, the right side plate 342 and the rear plate 343, and the rear plate 343 is provided with pin grooves and pin sleeves at intervals; the push plate frame 37 Be an angle steel shape part, its horizontal plane is as the top face of aisle 33, and the through hole of screw on the facade is a long hole, so that adjust the size of aisle 33, to adapt to the material pipe of different diameters; The back plate 343 of this push plate 34 and The facade of push pedal frame 37 fits and arranges, and push pedal frame 37 is fixed on the rear plate of the storehouse body 31 above aisle 33 with screws.

Please refer to Fig. 6, the push pedal swing mechanism 35 is located on the back of the feed bin 3 corresponding to the push pedal 34, and the push pedal swing mechanism 35 includes: a pair of upper and lower brackets 351, guide rods 352, pins 353, pin shafts 354, spring 355, retaining column 356, push plate 357, retaining ring 358; A pair of upper and lower brackets 351 are located at the upper and lower parts of the feed bin back; Guide rod 352 is sleeved in upper and lower brackets 351; Pin 353 one end Located in the guide rod 352, the other end of the pin 353 passes through the back side of the feed bin 3 and is movably connected in the pin groove of the back plate 343 of the push plate 34; The shaft groove is movably connected, and its other end is connected with the top plate 341 of the push plate 34; the retaining ring 358 is sleeved under the upper support of the guide rod 352, and the spring 355 and the retaining post 356 are successively arranged on the lower support 351; one side of the push plate 357 is provided with Groove 3571 is arranged; One end of the upper part of the pushing plate 357 is arranged on the top of the retaining column 356, and the bottom of the pushing plate 357 is connected with the blanking push rod 5;

Please refer to Fig. 7 and Fig. 8, the gate mechanism 36 includes: a bracket 361, an inner swing rod assembly 362, an outer swing rod assembly 363, an inner cam 364, an outer cam 365, a cam shaft 366, a pin shaft 367, an arm bar 368, and a roller Shaft 369, roller 3610; Inner swing bar 362 is located at the front of support 361; Outer swing bar assembly 363 is located at the rear of support 361; Inner cam 364 is located at the bottom of the inner swing bar group 362; Outer cam 365 is located at the outer swing The bottom of the rod assembly 363; the camshaft 366 is located in the shaft hole of the inner cam 364 and the outer cam 365, and is connected by screws; the pin shaft 367 passes through the through hole on the inner swing rod assembly 362 and the outer rocker assembly 363 and is rotationally connected One end of arm bar 368 is connected with camshaft 366 adjacent to inner cam 364, and its other end is connected with roller shaft 369 one end; Push plate slot 3571.

Please refer to Figure 9, the inner swing rod assembly 362 includes: an inner swing rod 3621, a pair of inner stop rods 3622, a spring column 3623, a spring 3624, and an adjustment block 3625; one end of the inner swing rod 3621 is vertically provided with a pair of spaced inner stops Rod 3622, the inner stop rod 3622 passes through the bottom plate of the aisle; the adjustment block 3625 is located at the lower part of the inner swing rod 3621 corresponding to the inner stop rod 3622, and the adjustment block 3625 is connected with the inner swing rod 3621 by screws; the spring column 3623 is vertically arranged between the middle part of the inner swing rod 3621 and the bracket 361 , and the spring column 3623 is covered with a spring 3624 ; the inner swing rod assembly 362 is arranged on the inner cam 364 .

Please refer to Fig. 10, the outer swing rod assembly 363 includes: an outer swing rod 3631, a pair of outer stop rods 3632, a spring column 3633, and a spring 3634; one end of the outer swing rod 3631 is vertically provided with a pair of outer stop rods 3632 spaced apart, through nuts Fixed connection, the outer stop rod 3632 passes through the bottom plate of the aisle 33; the spring column 3633 is vertically arranged between the outer swing rod 3631 and the bracket 361, and the spring 3634 is set outside the spring column 3633, and the outer swing rod assembly 363 is arranged on the outer cam 365 .

The working principle of the small tube automatic feeding device of the present invention is that when the material tube 7 is manually filled in the material bin, and after starting up and running, the transmission mechanism of the main engine makes the blanking push rod 5 and the tube turning push rod 6 respectively go up in the guide sleeve. , move down, when blanking push rod 5 moves downward, drive push plate 357 and guide rod 352 to move downward, the pin 353 that is housed on the guide rod, its other end is inserted in the groove of push plate 34, push plate 34 Be enclosed within on pin 354 and can rotate around it, push plate 34 is in the action of swinging and promoting material tube, makes the material tube in transition storehouse 32 can enter aisle storehouse 33 orderly and smoothly, promotes material tube to arrange neatly simultaneously. Because the rollers on the arm bar 368 are located in the chute of the push plate 357, when the blanking push rod 5 moves downward, the arm bar 368 drives the camshaft 366 to rotate, and the inner and outer cams 364, 365 on the camshaft and the camshaft 366 rotate together; Because one end of inside and outside swing link 3621,3631 is fixed on the same bearing pin 367, inside and outside swing link can swing around pin; Be provided with spring 3624, between the inside and outside swing link middle part and the support 3634, push the inner and outer swing rods 3621, 3631 outward, so that the inner and outer swing rods 3621, 3631 are respectively pressed onto the inner and outer cams 364, 365; when the blanking push rod 5 is at the lower limit position, the outer swing rod 3631 Swing, the outer retaining rod 3632 blocks the feed pipe 7; the inner swing rod 3621 swings, and the inner retaining rod 3622 withdraws from the feed pipe aisle. When the blanking push rod 5 was raised to the upper limit position, the outer retaining rod 3632 was withdrawn from the material pipe aisle, and a material pipe in the front rolled out of the aisle; the inner retaining rod 3622 stretched out the aisle to block a material pipe in the back. In such a cycle, every time the blanking push rod 5 moves up and down once, a material tube 7 is sent into the tube turning device in the tube turning mechanism. The vacuum suction port on the tube turning device firmly absorbs the material tube, and the tube turning The device 12 is fixed on the rotating shaft 13, and the tube turning push rod 6 drives the rotating shaft 13 to rotate through the connecting rod 14, so that the tube turning device 12 rotates 90°, and the tube turning device 12 takes the material tube 7 from the horizontal position to the vertical position , turn the material tube 7 by 90° and send it to the next station for filling; after the tube inverter reaches the vertical position, the material tube is pressed into the designated position by other mechanisms, and then the tube inverting push rod 5 descends rapidly, so that the tube inverter 12 times To the horizontal position, so far a filling cycle is over.

The structure design of the present invention is novel and scientific. Since the material tubes can be controlled to roll neatly and orderly in the hopper and the transitional silo, and flow from the aisle to the tube turning mechanism one by one, it not only effectively improves the production efficiency, but also ensures that the products are in good condition during the production process. It is not damaged in the middle, which improves the product quality and reduces the production cost.

Claims (10)

1. the feeding device of a bantam tube, by be arranged on the host work table top (4) turning over pipe mechanism (1), be fixed in the support (2) that turns over pipe mechanism both sides, tiltedly be located at a pair of feed bin (3) on the two stands respectively, be located at the feed bin bottom blanking push rod (5), be placed in the pipe push rod (6) that turns over that turns over pipe mechanism (1) one side and form; It is characterized in that:

Described feed bin (3) comprising: warehouse (31), transitional storehouse (32), passageway (33), push pedal (34), push pedal swinging gear (35), gate mechanism (36), push pedal frame (37); The bottom of feed bin (3) is made as the inclined-plane, and its discharging portion compartment is separated successively and is provided with transitional storehouse (32) and passageway (33); Push pedal (34) vertically is located between the porthole of transitional storehouse (32) and passageway (33); Push pedal frame (37) is arranged between the back plate and push pedal (34) of feed bin (3); Push pedal swinging gear (35) is located at and the corresponding feed bin of push pedal (34) (3) back side, and this push pedal swinging gear (35) is connected with push pedal (34) by bearing pin (354), and this push pedal swinging gear (35) is connected with the transmission device of main frame by blanking push rod (5); Gate mechanism (36) is located at the bottom of passageway (33); The described pipe mechanism (1) of turning over is connected with the transmission device of main frame by turning over pipe push rod (6).

2. the feeding device of bantam tube according to claim 1, it is characterized in that: described warehouse (31) front is provided with the feed bin door (311) that can outwards overturn, this feed bin door (311) bottom is provided with a pair of hinge (312) and is connected with warehouse (31), and warehouse (31) top is provided with Magnetic door lock (313).

3. the feeding device of bantam tube according to claim 1, it is characterized in that: the volume of described transitional storehouse (32) is less than the volume of feed bin (3); The height in passageway (33) is suitable with material pipe diameter height.

4. the feeding device of bantam tube according to claim 1 is characterized in that: described push pedal (34) is connected and composed by top board (341), right side board (342) and back plate (343), is interval with cotter slot and pin sleeve on this back plate (343); Described push pedal frame (37) is an angle steel shaped member, and the through hole of push pedal frame (37) facade screwing is a slotted hole, and its horizontal surface is as the end face of passageway (33); The back plate (343) of push pedal (34) is fitted with the facade of push pedal frame (37) and is provided with; Push pedal frame (37) is screwed on the back plate of the warehouse (31) of passageway (33) top.

5. the feeding device of bantam tube according to claim 1, it is characterized in that: described push pedal swinging gear (35) comprising: a pair of upper and lower support (351), guide rod (352), pin (353), bearing pin (354), spring (355), bumping post (356), slurcam (357), back-up ring (358); Described upper and lower support (351) is located at the upper and lower part at feed bin (3) back side; Described guide rod (352) is set in the upper and lower support (351); Described pin (353) one ends are located in the guide rod (352), and the other end of pin (353) passes through in the cotter slot of back plate (343) that feed bin (3) back side is located at push pedal (34), and with back removable connection of plate (343); One end of described bearing pin (354) is located in the pin sleeve of back plate (343) of push pedal (34), and flexibly connects with push pedal frame (37), and the other end of bearing pin (354) is fixed on the facade of push pedal frame (37); Described spring (355), bumping post (356) are located on the lower bracket (351) successively; Described slurcam (357) one sides are provided with groove (3571), and slurcam (357) top is located at bumping post (356) top, and the bottom of slurcam (357) is connected with blanking push rod (5); Back-up ring (358) is set in the upper end of guide rod (352), and fastening with screw.

6. the feeding device of bantam tube according to claim 1, it is characterized in that: described gate mechanism (36) comprising: support (361), interior oscillating bar assembly (362), outside lever assembly (363), cam ring (364), external cam (365), camshaft (366), bearing pin (367), armed lever (368), roller shaft (369), roller (3610); Oscillating bar assembly (362) is located at support (361) front portion in described, and outside lever assembly (363) is located at support (361) rear portion; Cam ring (364) is located at the bottom of interior oscillating bar assembly (362).External cam (365) is located at the bottom of outside lever assembly (363), and described camshaft (366) is fixed in the axis hole of cam ring (364) and external cam (365) by screw; Described bearing pin (367) passes the hole on interior oscillating bar assembly (362) and the outside lever assembly (363), and is rotationally connected with interior oscillating bar assembly (362) and outside lever assembly (363); Described armed lever (368) one ends are connected with camshaft (366), armed lever (368) other end is connected with roller shaft (369) one ends, this roller (3610) is located at the other end of roller shaft (369), and this roller (3610) is located in the groove (3571) of slurcam of push pedal swinging gear (35).

7. the feeding device of bantam tube according to claim 1 is characterized in that: oscillating bar assembly (362) comprising in described: pin (3622), spring bearing (3623), spring (3624) in the interior fork (3621), one pair, adjust piece (3625); Vertically be provided with a pair of interior lever (3622) in described on adjustment piece (3625) both sides of fork (3621) one ends, pin (3622) passes through the base plate of passageway (33) in this; Described adjustment piece (3625) is located at interior fork (3621) bottom, will adjust piece (3625) by screw and be connected as a single entity with fork (3621); Described spring bearing (3623) vertically is located between the middle part and support (361) of interior fork (3621), and described spring (3624) is enclosed within outside the spring bearing (3623); Should be located on the cam ring (364) by interior oscillating bar assembly (362).

8. the feeding device of bantam tube according to claim 1, it is characterized in that: described outside lever assembly (363) comprising: outside lever (3631), a pair of outer lever (3632), spring bearing (3633), spring (3634); Described outside lever (3631) one end both sides vertically are provided with an external pin (3632), and this outer pin (3632) passes through the base plate in passageway (33) and outside lever (3631) is affixed by nut; Described spring bearing (3633) vertically is located between outside lever (3631) and the support (361), and described spring (3634) is set in outside the spring bearing (3633), and this outside lever assembly (363) is located on the external cam (365).

9. the feeding device of bantam tube according to claim 1 is characterized in that: the other end of described blanking push rod (5) vertically passes guide pin bushing (51) back that is fixed on work top (4) bottom and is connected with the transmission device of main frame.

10. the feeding device of bantam tube according to claim 1 is characterized in that: the described pipe mechanism (1) of turning over comprises casing (11), turns over pipe device (12), turning cylinder (13), connecting rod (14); Described casing (11) internal upper part is provided with and turns over pipe device (12); The outer sheathed pipe device (12) that turns over of described turning cylinder (13) one ends, turning cylinder (13) other end is connected with connecting rod (14) top by screw; The bottom of described connecting rod (14) with turn over pipe push rod (6) and flexibly connect; The guide pin bushing (61) that vertically passes through under the work top (4) of bottom one end that turns over pipe push rod (6) is connected with the transmission device of main frame.

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