CN214452073U

CN214452073U - Mining lifting conveying type automatic anchor rod bundling machine

Info

Publication number: CN214452073U
Application number: CN202120509385.XU
Authority: CN
Inventors: 靳惠深; 靳东羽; 宋君琪
Original assignee: Jiangsu Bangze Electromechanical Technology Co ltd
Current assignee: Jiangsu Bangze Electromechanical Technology Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-22
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a mining automatic bundling machine of transport formula stock of lifting for the process of tying up at last is carried out the stock in stock automation line, including two devices, bundling device, finished product frame and the PLC control system of lifting of rail-walking, bundling device is two sets of, and the symmetry sets up in the two both sides of lifting the device of rail-walking, and the finished product frame is used for the anchor stock that the splendid attire was tied up. And the PLC control system is used for controlling the rail walking type double-lifting device and the bundling device. The device has the advantages of simple structure, stable conveying, small occupied space and high automation degree, and not only can be seamlessly matched with a full-automatic production line of the mining anchor rod, but also can be independently used.

Description

Mining lifting conveying type automatic anchor rod bundling machine

Technical Field

The utility model relates to a mining equipment technical field, concretely relates to mining lifting transport formula stock automatic bundling machine.

Background

Along with the increasing support quantity of the anchor rods of the coal mine underground roadway and the increasing length of the roadway in China, the processing production quantity of the anchor rods is increased, so that the automatic production degree of the anchor rods is promoted to be increased, and all processing procedures of anchor rod production are covered at present.

Because each anchor rod weighs several to tens of kilograms, in order to facilitate transportation, storage and underground handling of the anchor rods, the anchor rods need to be divided into several bundles, and at most 10 bundles, which is also the last bundling procedure in anchor rod product production. The bundling procedure of the conventional distributed anchor rod production mode is manually carried out, two ends of an anchor rod to be bundled are firmly bundled by a steel wire respectively by one person at two ends of the anchor rod to be bundled, and the anchor rod is lifted and placed into a finished product frame. Along with stock automation line's development, beat bundle work and also become automatic completion by the manual work, however, at present with the supporting system of beating a bundle of stock automation line, stock conveying mechanism mostly all is the design of grudging post tongs formula, establishes planer-type framework above beating a bundle frame promptly, installs two sets of synchronous manipulators that can go up and down and walk on it, the action flow when beating a bundle at the stock is: the mechanical arm descends, the anchor rod is grabbed, the mechanical arm ascends, the mechanical arm travels to a bundling station, the mechanical arm descends, the anchor rod is loosened, the mechanical arm ascends, the mechanical arm returns to the original position, and the two sets of mechanical arms can synchronously feed unbundled anchor rods and bundled anchor rods into and out of the bundling machine. However, the mechanism has the problems of large occupied space, poor stability, multiple action processes, complex structure, difficult maintenance and high cost, and also influences the overall attractiveness of an anchor rod production line and a workshop, and meanwhile, the bundling machine also has the problems of large structure, inaccurate steel wire threading alignment, loose anchor rod bundling and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the defect among the above-mentioned prior art with not enough, provide a mining lift transport formula stock automatic bundling machine, its occupation space is little, stability is high, the structure is succinct, tie up firmly, not only can with the seamless supporting of mining stock full automatization production line, also can the independent utility to be applicable to the automatic bundling operation of any other shaft-like materials.

In order to achieve the purpose, the utility model discloses a mining lifting conveying type automatic bundling machine for anchor rods, which comprises two track walking type double lifting devices, a bundling device, a finished product frame and a PLC control system, wherein the two bundling devices are symmetrically arranged on two sides of the track walking type double lifting devices, and the finished product frame is used for containing bundled anchor rods; the PLC control system is used for controlling the rail walking type double-lifting device and the bundling device; the rail-walking type double-lifting device comprises a rack, an anchor rod collecting frame, a trolley rail, a bundling rod-in lifting frame, a walking trolley and a finished product shifting-out lifting material-turning frame, wherein the anchor rod collecting frame is fixedly arranged on the rack, the bundling rod-in lifting frame and the finished product shifting-out lifting material-turning frame are fixedly arranged on two sides of the walking trolley, and the walking trolley is placed on the trolley rail; the bundling device comprises a wire feeding mechanism, a wire wrapping mechanism, a wire twisting mechanism and an anchor rod clamping mechanism, wherein the wire feeding mechanism comprises a cutter, a wire feeding guide pipe, a guide pipe air cylinder, a wire feeder, a wire guide wheel, a tray frame and a steel wire disc, the steel wire disc is arranged on the tray frame, the wire feeder is positioned above the wire guide wheel, the wire feeding guide pipe is fixedly connected with the guide pipe air cylinder, and the cutter is positioned at the top of the wire feeding guide pipe; the wire wrapping mechanism comprises a wire wrapping mechanical arm, a wire wrapping sliding sleeve, a wire wrapping cylinder, a sliding rod, a wire wrapping sliding table guide rail and a wire wrapping sliding table cylinder; the sliding table is arranged on the sliding table guide rail, the sliding table slides on the sliding table guide rail through the wire wrapping sliding table cylinder, the sliding rod is arranged on the sliding table, the wire wrapping sliding sleeve is sleeved on the sliding rod and pushes the wire wrapping sliding sleeve to slide on the sliding rod through the wire wrapping cylinder, and the wire wrapping mechanical arm is arranged on the wire wrapping sliding sleeve; the wire twisting mechanism comprises a wire clamping mechanism, a rotating mechanism and a sliding table; the wire twisting mechanism and the wire wrapping mechanism are arranged on the bundling device mechanism and located on two sides of the upper portion of the anchor rod clamping mechanism, and the wire clamping mechanism and the rotating mechanism are arranged on the sliding table.

The anchor rod clamping mechanism comprises an anchor rod clamping opening and a clamping rod air cylinder, and the anchor rod clamping opening is arranged above the clamping rod air cylinder.

And furthermore, two V-shaped support rod plates are arranged on the anchor rod material collecting frame, the bundling rod feeding lifting frame and the finished product shifting and lifting material turning frame.

Furthermore, a trolley positioning baffle is arranged at the foremost end of the trolley track.

Furthermore, the walking trolley is connected with the frame through a trolley cylinder, the bundling feed rod supporting frame is connected with the walking trolley through a supporting cylinder, and the supporting material turning frame is connected with the walking trolley through a shifting-out supporting cylinder.

Further, the lifting material turning frame is provided with the material turning cylinder.

Furthermore, the wire clamping mechanism comprises a wire clamping pull ring, a wire clamping sliding sleeve, a wire clamping cylinder, a wire clamping arm and a wire clamping mechanical arm which are connected in sequence.

Furthermore, the rotating mechanism comprises a wire twisting speed changer, a wire twisting motor and a wire twisting shaft, the wire twisting speed changer is connected with the wire twisting motor, the wire twisting shaft is connected with the wire twisting speed changer, and the wire clamping mechanical arm is fixedly arranged at the front end of the wire twisting shaft.

Furthermore, the sliding table comprises a screw thread sliding table, a sliding table track and a sliding table cylinder, one end of the sliding table cylinder is fixed on the sliding table track, and the other end of the sliding table cylinder is fixedly connected with the screw thread sliding table.

The utility model has the advantages that: the anchor rod conveying, feeding and discharging bundling device adopts a lower-part track walking type double-lifting frame, the unbundled and bundled anchor rods are synchronously fed and moved out of the bundling device after being supported from the lower part of the anchor rod, the steel wire is penetrated by the bundling device through a guide pipe, the steel wire can be accurately penetrated in place under any condition, the wire wrapping mechanical arm and the screwing mechanical arm adopt a design capable of moving forwards, the wire wrapping mechanical arm is enabled to be closer to the body of the anchor rod, and the bundling is firmer.

Drawings

Fig. 1 is a schematic front view of an automatic lifting conveying type anchor rod bundling machine according to the present invention.

Fig. 2 is a schematic top view of the structure of fig. 1.

Fig. 3 is a schematic structural diagram of a rail-walking type double-lift device.

Fig. 4 is a schematic structural view of the bundling apparatus.

In the figure, 1-rail walking type double-lifting device, 100-frame, 101-anchor rod material collecting rack, 102-trolley rail, 103-trolley cylinder, 104-rod inlet lifting cylinder, 105-rod inlet lifting rack, 106-trolley, 107-shift-out lifting cylinder, 108-material turning cylinder, 109-shift-out lifting material turning rack and 110-trolley positioning baffle; 2-bundling device, 200-bundling device frame, 201-wire twisting speed changer, 202-wire twisting motor, 203-wire clamping pull ring, 204-wire clamping slide sleeve, 205-wire clamping cylinder, 206-wire twisting slide, 207-wire twisting shaft, 208-slide rail, 209-wire clamping arm, 210-wire clamping manipulator, 211-slide cylinder, 212-anchor rod clamping opening, 213-wire wrapping manipulator, 214-cutter, 215-wire wrapping slide sleeve, 216-wire wrapping cylinder, 217-slide rod, 218-wire wrapping slide, 219-wire wrapping slide rail, 220-wire wrapping slide cylinder, 221-wire feeding guide tube, 222-guide tube cylinder, 223-wire feeder, 224-wire guide wheel, 225-rod clamping cylinder, 226-tray frame, 227-wire tray; and 3, a finished product rack.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, the automatic mining lifting conveying type anchor rod bundling machine comprises two rail-walking type double lifting devices 1, two bundling devices 2, a finished product frame 3 and a PLC control system, wherein the two bundling devices 2 are symmetrically arranged on two sides of the rail-walking type double lifting devices 1, and the finished product frame 3 is used for containing bundled anchor rods; the PLC control system is used for controlling the track walking type double-lifting device 1 and the bundling device 2;

as shown in fig. 3, the rail-walking type dual-lifting device 1 includes a frame 100, an anchor rod collecting frame 101, a trolley rail 102, a bundling rod-feeding lifting frame 105, a walking trolley 106, and a finished product removing lifting frame 109, wherein the anchor rod collecting frame 101 is fixedly disposed on the frame 100, the bundling rod-feeding lifting frame 105 and the finished product removing lifting frame 109 are fixedly disposed at two sides of the walking trolley 106, and the walking trolley 106 is disposed on the trolley rail 102;

as shown in fig. 4, the bundling apparatus 2 includes a wire feeding mechanism, a wire wrapping mechanism, a wire twisting mechanism and an anchor rod clamping mechanism, wherein the wire feeding mechanism includes a cutting knife 214, a wire feeding guide pipe 221, a guide pipe cylinder 222, a wire feeder 223, a godet wheel 224, a tray frame 226, and a wire reel 227, the wire reel 227 is mounted on the tray frame 226, the wire feeder 223 is located above the godet wheel 224, the wire feeding guide pipe 221 is fixedly connected with the guide pipe cylinder 222, and the cutting knife 214 is located at the top of the wire feeding guide pipe 221;

the wire wrapping mechanism comprises a wire wrapping mechanical arm 213, a wire wrapping sliding sleeve 215, a wire wrapping cylinder 216, a sliding rod 217, a wire wrapping sliding table 218, a wire wrapping sliding table guide rail 219 and a wire wrapping sliding table cylinder 220; the sliding table 218 is arranged on a sliding table guide rail 219, the sliding table 218 slides on the sliding table guide rail 219 through a wire wrapping sliding table cylinder 220, the sliding rod 217 is arranged on the sliding table 218, the wire wrapping sliding sleeve 215 is sleeved on the sliding rod 217 and pushes the wire wrapping sliding sleeve 215 to slide on the sliding rod 217 through a wire wrapping cylinder 216, and the wire wrapping manipulator 213 is arranged on the wire wrapping sliding sleeve 215;

the wire twisting mechanism comprises a wire clamping mechanism, a rotating mechanism and a sliding table; the twisting mechanism and the wrapping mechanism are arranged on the bundling device mechanism 200 and are positioned on two sides above the anchor rod clamping mechanism, and the wire clamping mechanism and the rotating mechanism are arranged on the sliding table.

Specifically, the anchor rod clamping mechanism includes an anchor rod clamping opening 212 and a clamping rod cylinder 225, and the anchor rod clamping opening 212 is disposed above the clamping rod cylinder 225.

As shown in fig. 3, two V-shaped support plates are disposed on the anchor rod collecting rack 101, the bundling rod feeding rack 105 and the finished product removing and lifting material turning rack 109.

Specifically, as shown in FIG. 3, the forwardmost end of the cart rail 102 is provided with a cart positioning fence 110.

Specifically, a traveling trolley 106) is connected with the frame 100) through a trolley cylinder 103, a bundling feed rod lifting frame 105 is connected with the traveling trolley 106 through a lifting cylinder 104, and a lifting material turning frame 109 is connected with the traveling trolley 106 through a shifting-out lifting cylinder 107.

Specifically, the lifting and material overturning frame 109 is provided with a material overturning cylinder 108.

Specifically, the wire clamping mechanism comprises a wire clamping pull ring 203, a wire clamping sliding sleeve 204, a wire clamping cylinder 205, a wire clamping arm 209 and a wire clamping mechanical arm 210 which are connected in sequence.

Specifically, the rotating mechanism comprises a screwing speed changer 201, a screwing motor 202 and a screwing shaft 207, the screwing speed changer 201 is connected with the screwing motor 202, the screwing shaft 207 is connected with the screwing speed changer 201, and the wire clamping mechanical arm 210 is fixedly arranged at the front end of the screwing shaft 207.

Specifically, the sliding table comprises a screw sliding table 206, a sliding table track 208 and a sliding table cylinder 211, wherein one end of the sliding table cylinder 211 is fixed on the sliding table track 208, and the other end of the sliding table cylinder is fixedly connected with the screw sliding table 206.

The working principle of the rail-walking type double-lifting device 1 is as follows: when the walking trolley 106 is controlled by the trolley cylinder 103 to return to a waiting state, the bundling rod-in lifting frame 105 is just below the anchor rod material collecting frame 101, and the finished product is moved out of the lifting material turning frame 109 and just below the anchor rod clamping opening 212 of the bundling machine 2; when the walking trolley 106 is pushed out to a bundling position by the trolley air cylinder 103, the bundling rod-in lifting frame 105 is just above the anchor rod clamping opening 212 of the bundling machine 2, and a finished product is moved out of the lifting material-turning frame 109 and just above the front of the finished product collecting frame 3, so that the adjustment can be realized in the field installation. The two actions are as follows: in a waiting state, the bundling feed rod lifting frame 105 is controlled by the feed rod lifting cylinder 104 to fall, and waits below the anchor rod collecting frame 101, the uppermost edge of the V-shaped feed rod plate of the bundling feed rod lifting frame is lower than the lowest port of the V-shaped feed rod plate of the anchor rod collecting frame 101, so that the upper edge of the V-shaped feed rod plate of the walking trolley 106 is prevented from touching the anchor rod in the anchor rod collecting frame 101 when the walking trolley 106 returns, and similarly, a finished product is moved out of the lifting material turning frame 109 and also falls under the control of the moving-out lifting cylinder 107, and waits below the anchor rod clamping port 212 of the bundling machine 2; in the feeding and moving-out state, the anchor rod collecting frame 101 to be bundled has enough number of anchor rods to be bundled, the front group of anchor rods is bundled by the bundling machine 2, the counting detection device sends out signals, the bundling inlet rod lifting frame 105 is controlled by the inlet rod lifting cylinder 104, the finished product is moved out of the lifting and turning frame 109 and is controlled by the moving-out lifting cylinder 107 to be lifted simultaneously, the anchor rods to be bundled are lifted by the V-shaped support rod plate of the bundling inlet rod lifting frame 105, the finished product is moved out of the V-shaped support rod plate of the lifting and turning frame 109 to lift the bundled anchor rods from the anchor rod clamping opening 212 of the bundling machine 2, the lifting height is that the anchor rods do not touch the V-shaped support rod plate of the anchor rod collecting frame 101 and the upper part of the anchor rod clamping opening 212 of the bundling machine 2 in the anchor rod conveying and moving process, the trolley cylinder 103 drives the moving trolley 106 to move forwards along the trolley track 102 to the trolley positioning baffle 110 to stop, then, the bundling inlet rod lifting frame 105 falls down to place the anchor rods to be bundled in the anchor rods in the V-shaped support rod plate of the anchor rod clamping opening of the bundling machine 2 into the anchor rod clamping opening 212 of the bundling machine 2, and the finished product shifts out and lifts the V-shaped die-pin plate on the upper portion of the material turnover rack 109 and overturns under the control of the material turnover cylinder 108, the tied anchor rods are poured into the finished product centralized frame 3, then the upper V-shaped die-pin plate returns to the original position, the finished product shifts out and lifts the material turnover rack 109 and falls down, after the rod-in die-pin bracket 105 to be tied and the finished product shift out and lifts the material turnover rack 109 and fall down completely, the detection device sends out a signal, the trolley cylinder 103 drives the traveling trolley 106 to move backwards to the material waiting position along the trolley track 102, and the next anchor rod conveying cycle is waited to start.

The operating principle of the bundling device is as follows: when the bundled anchor rod and the anchor rod to be bundled are moved out and sent into the anchor rod clamping opening 212 of the bundling device 2 by the rail-walking double-lifting device 1, the anchor rod clamping opening 212 folds and clamps the anchor rod to be bundled under the pushing of the clamping rod cylinder 225, the wire feeding wheel of the wire feeding mechanism is rotated under the driving of the motor to start wire feeding, the wire feeding guide pipe 221 is pushed by the guide pipe cylinder 222 to ascend to guide the wire head, the steel wire is sent into the notch of the wire wrapping mechanical arm 213, when the wire feeding length reaches a set value, the detection device sends a signal, the wire feeding guide pipe 221 is withdrawn, the wire wrapping sliding table 218 is pushed by the wire wrapping sliding table cylinder 220 to move forwards along the wire wrapping sliding table guide rail 219, the wire wrapping mechanical arm 213 tightly attaches the steel wire to the anchor rod, the cutter 214 cuts the lower part of the steel wire, at the moment, the wire gripping mechanical arm 210 of the wire twisting mechanism also pushes the wire twisting sliding table 206 to move close to the anchor rod along the sliding table rail 208 by the sliding table 211, the wire wrapping mechanical arm 213 is pushed by the wire wrapping cylinder 216 to close, the steel wire is wrapped on the anchor rod, two ends of the steel wire are fed into a wire clamping mechanical arm 210, the wire clamping mechanical arm 210 pulls a wire clamping pull ring 203 through a wire clamping cylinder 205 to drive a wire clamping sliding sleeve 204 to slide on a twisting shaft 207, a wire clamping arm 209 is pushed to clamp the two ends of the steel wire, a wire wrapping mechanical arm 213 is opened, the wire wrapping mechanism returns to the original position to wait for the next cycle, a twisting motor 202 is started, a wire twisting speed changer 201 drives the twisting shaft 207, the wire clamping sliding sleeve 204, the wire clamping arm 209 and the wire clamping mechanical arm 210 to rotate in a wire twisting sliding table 206 to screw the steel wire, when the steel wire is screwed to the set number of turns, the twisting motor 202 stops, the wire clamping mechanical arm 210 is positioned and loosened, the wire twisting mechanism also returns to the original position to wait for the next cycle, and an anchor rod clamping opening 212 loosens the bundled anchor rod, so that the complete cycle of bundling of one anchor rod is finished.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes that can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art can be made within the scope of the claims of the present invention.

Claims

1. The utility model provides an automatic bundling machine of mining lifting transport formula stock which characterized in that: the anchor rod bundling device comprises two rail walking type double-lifting devices (1), bundling devices (2), finished product frames (3) and a PLC (programmable logic controller) control system, wherein the bundling devices (2) are arranged in two groups and symmetrically arranged on two sides of the rail walking type double-lifting devices (1), and the finished product frames (3) are used for containing bundled anchor rods; the PLC control system is used for controlling the rail walking type double-lifting device (1) and the bundling device (2);

the rail-walking type double-lifting device (1) comprises a rack (100), an anchor rod collecting frame (101), a trolley rail (102), a bundling rod-feeding lifting frame (105), a walking trolley (106) and a finished product shifting-out lifting frame (109), wherein the anchor rod collecting frame (101) is fixedly arranged on the rack (100), the bundling rod-feeding lifting frame (105) and the finished product shifting-out lifting frame (109) are fixedly arranged on two sides of the walking trolley (106), and the walking trolley (106) is placed on the trolley rail (102);

the bundling device (2) comprises a wire feeding mechanism, a wire wrapping mechanism, a wire twisting mechanism and an anchor rod clamping mechanism,

the wire feeding mechanism comprises a cutter (214), a wire feeding guide pipe (221), a guide pipe cylinder (222), a wire feeder (223), a wire guide wheel (224), a tray frame (226) and a steel wire disc (227), wherein the steel wire disc (227) is installed on the tray frame (226), the wire feeder (223) is positioned above the wire guide wheel (224), the wire feeding guide pipe (221) is fixedly connected with the guide pipe cylinder (222), and the cutter (214) is positioned at the top of the wire feeding guide pipe (221);

the wire wrapping mechanism comprises a wire wrapping mechanical arm (213), a wire wrapping sliding sleeve (215), a wire wrapping cylinder (216), a sliding rod (217), a wire wrapping sliding table (218), a wire wrapping sliding table guide rail (219) and a wire wrapping sliding table cylinder (220); the sliding table (218) is arranged on the sliding table guide rail (219), the sliding table (218) slides on the sliding table guide rail (219) through the wire wrapping sliding table air cylinder (220), the sliding rod (217) is arranged on the sliding table (218), the wire wrapping sliding sleeve (215) is sleeved on the sliding rod (217) and pushes the wire wrapping sliding sleeve (215) to slide on the sliding rod (217) through the wire wrapping air cylinder (216), and the wire wrapping manipulator (213) is arranged on the wire wrapping sliding sleeve (215);

the wire twisting mechanism comprises a wire clamping mechanism, a rotating mechanism and a sliding table; the wire twisting mechanism and the wire wrapping mechanism are arranged on the bundling device mechanism (200) and are positioned at two sides above the anchor rod clamping mechanism, the wire clamping mechanism and the rotating mechanism are arranged on the sliding table,

the anchor rod clamping mechanism comprises an anchor rod clamping opening (212) and a clamping rod air cylinder (225), wherein the anchor rod clamping opening (212) is arranged above the clamping rod air cylinder (225).

2. The mining lifting conveying type anchor rod automatic bundling machine according to claim 1, characterized in that: the anchor rod collecting frame (101), the bundling rod feeding lifting frame (105) and the finished product shifting lifting material turning frame (109) are respectively provided with two V-shaped support rod plates.

3. The mining lifting conveying type anchor rod automatic bundling machine according to claim 1, characterized in that: the foremost end of the trolley track (102) is provided with a trolley positioning baffle (110).

4. The mining lifting conveying type anchor rod automatic bundling machine according to claim 2, characterized in that: the walking trolley (106) is connected with the rack (100) through a trolley cylinder (103), the bundling rod-feeding lifting frame (105) is connected with the walking trolley (106) through a rod-feeding lifting cylinder (104), and the lifting material-turning frame (109) is connected with the walking trolley (106) through a shifting-out lifting cylinder (107).

5. The mining lifting conveying type anchor rod automatic bundling machine according to claim 4, characterized in that: and a material turning cylinder (108) is arranged on the lifting material turning frame (109).

6. The mining lifting conveying type anchor rod automatic bundling machine according to claim 1, characterized in that: the wire clamping mechanism comprises a wire clamping pull ring (203), a wire clamping sliding sleeve (204), a wire clamping cylinder (205), a wire clamping arm (209) and a wire clamping mechanical arm (210) which are connected in sequence.

7. The mining lifting conveying type anchor rod automatic bundling machine according to claim 6, characterized in that: the rotating mechanism comprises a wire twisting speed changer (201), a wire twisting motor (202) and a wire twisting shaft (207), the wire twisting speed changer (201) is connected with the wire twisting motor (202), the wire twisting shaft (207) is connected with the wire twisting speed changer (201), and the wire clamping mechanical arm (210) is fixedly arranged at the front end of the wire twisting shaft (207).

8. The mining lifting conveying type anchor rod automatic bundling machine according to claim 6, characterized in that: the sliding table comprises a screw thread sliding table (206), a sliding table track (208) and a sliding table cylinder (211), one end of the sliding table cylinder (211) is fixed on the sliding table track (208), and the other end of the sliding table cylinder (211) is fixedly connected with the screw thread sliding table (206).