CN217732964U - Stretching device for hot-drawing forming of pipe fittings - Google Patents

Abstract

The utility model relates to a pipe fitting processing technology field, concretely relates to a draw gear for pipe fitting hot drawing shaping, including the centre gripping subassembly that two symmetries set up about and can drive the removal subassembly that removes about the centre gripping subassembly, the centre gripping subassembly includes clamping jaw mechanism and the mechanism that opens and shuts, clamping jaw mechanism is used for pressing from both sides tight pipe fitting, the mechanism that opens and shuts can drive clamping jaw mechanism opens and shuts. The pipe fitting is cliied simultaneously to two centre gripping subassemblies about, and the centre gripping situation on both sides is the same about to the pipe fitting, and arbitrary one side is stretched it and can both reach anticipated tensile effect, moreover the removal subassembly can also promote two centre gripping subassemblies simultaneously and realize the biaxial tension to the pipe fitting, improves tensile efficiency.

Description

Stretching device for hot-drawing forming of pipe fittings

Technical Field

The utility model relates to a pipe fitting processing technology field, concretely relates to a stretching device for pipe fitting hot drawing shaping.

Background

Pipettes are gauges used to accurately remove a volume of solution. A pipette is a type of measurement instrument that is used only to measure the volume of solution it emits. Usually a slender glass tube, the lower end of which is in the shape of a sharp mouth, and the neck of the upper end of which is marked with a marked line which is used as a mark for the accurate volume. Traditional pipette adopts glass to make, because the pipe diameter is tiny, and the pipe wall is thinner, and easy breakage and scrap when using the back washing, for the aforesaid of changing the pipette is not enough, has appeared adopting general polystyrene, the pipette of GPPS material manufacturing promptly, and this kind of pipette is disposable, and difficult damage uses also very conveniently. However, the existing plastic nozzle stretch forming manufacturing equipment has low automation degree, so that the production cost is high, and the popularization and the application of the plastic pipette are limited.

To above-mentioned problem, the equipment that can higher efficiency production pipette has appeared, the device of the tensile shaping of pipette heating disclosed as the patent application number is CN202123324727.X, including tensile platform, tensile bench is provided with a plurality of brace tables, the equidistant setting of brace table, the brace table includes half arc board, be provided with first zirconia board on the inner wall of half arc board, sliding fit has the removal frame on tensile bench, be provided with the motor rack on the removal frame, be provided with the motor on the motor rack, the motor is connected with the screw rod, the removal frame includes the back plate, sliding fit has the movable plate on the removal frame, the screw rod passes the back plate in proper order and the movable plate extends to one side, the screw rod rotates with the movable plate to be connected, be provided with the movable plate mounting panel on the movable plate, the mounting panel is in the below of screw rod. According to the device, one end of a pipette is clamped by two groups of clamping components, then the pipette in a thermoplastic state is slowly lengthened by the clamping components, and the pipette is sprayed and cooled in the lengthening process and finally formed; although the work efficiency is improved through automation, the temperature of the pipe after being extruded from the blow molding machine is extremely high, a long time is needed from extrusion to stretching and cooling molding, and only one pipette is produced in one-time extrusion, so that the production efficiency is still low on the whole; in addition, the production precision is poor, and the quality of the pipette is difficult to ensure. Therefore, a conveying system for driving the pipe fitting to transversely translate along the direction perpendicular to the axial direction of the pipe fitting appears, the conveying system is used for machining and forming the local position of the pipe fitting while conveying the pipe fitting on a pipette production line, the pipe fitting needs to be stretched and formed in the machining process, the existing commonly-used stretching device usually stretches one end of the pipe fitting, and the stretching and forming efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a stretching device for pipe fitting hot drawing shaping is provided, including the centre gripping subassembly that controls two symmetry settings and can drive the removal subassembly that removes about the centre gripping subassembly, the centre gripping subassembly includes gripper mechanism and opening and closing mechanism, gripper mechanism is used for pressing from both sides tight pipe fitting, opening and closing mechanism can drive gripper mechanism opens and shuts.

As the utility model discloses a preferred, two about the removal subassembly can drive simultaneously centre gripping subassembly moves back on the back mutually.

As the utility model discloses a preferred, remove the subassembly including controlling direction installation pole and the first cylinder that transversely sets up, direction installation pole supplies centre gripping unit mount, first cylinder with the centre gripping subassembly is connected and can be promoted the centre gripping subassembly along direction installation pole removes.

As the utility model discloses a preferred, the removal subassembly still includes buffer gear, buffer gear is including fixing baffle and cover on the direction installation pole are established ripple buffer hose on the direction installation pole, ripple buffer hose one end is supported and is leaned on baffle and other end supply the centre gripping subassembly supports and leans on.

As the utility model discloses a preferred, the centre gripping subassembly still includes solid fixed sliding block and backup pad, solid fixed sliding block installs on the direction installation pole and can follow the direction installation pole removes, the backup pad upper end is fixed gu fixed sliding block is last and the lower extreme supplies mechanism fixed connection opens and shuts, clamping jaw mechanism fixed connection be in open and shut in the mechanism.

As the utility model discloses a preferred, the backup pad include fixed part, lower fixed part and be located the fixed part with linking portion between the fixed part down, go up the fixed part and be along vertical direction extension and have the straight plate structure of controlling two vertical lateral walls, set up on the fixed slider and extend and have the mounting groove of vertical inside wall along vertical direction, it is in to go up fixed part fixed mounting in the mounting groove, and vertical lateral wall with vertical inside wall pastes and leans on.

As the utility model discloses a preferred, the linking portion is along controlling the straight plate structure of horizontal extension, linking portion is connected at the ascending one end of left right side go up the fixed part and the other end is connected fixed part down, the fixed part is located linking portion top, the fixed part is located down linking portion below.

As the utility model discloses a preferred, clamping jaw mechanism includes deflector and two upper and lower grip blocks, the guide way has been seted up along vertical direction on the deflector, grip block one end is installed on the deflector and can follow the guide way removes.

As the utility model discloses a preferred, the mechanism that opens and shuts is including fixing second cylinder on the fixed part down, the deflector is installed on the second cylinder, the second cylinder is connected the grip block can drive the grip block is followed the guide way removes.

As the utility model discloses a preferred, clamping jaw mechanism is still including fixing clamping head on the grip block, two upper and lower clamping head longitudinal symmetry and setting in opposite directions, the overhead centre gripping that is fixed with of centre gripping fills up, the arc centre gripping groove has been seted up on the centre gripping stacks up, two from top to bottom the centre gripping stacks up the arc centre gripping groove corresponds from top to bottom.

Has the advantages that:

the pipe fitting is cliied simultaneously to two centre gripping subassemblies about, and the centre gripping situation on both sides is the same about to the pipe fitting, and arbitrary one side is stretched it and can both reach anticipated tensile effect, moreover the removal subassembly can also promote two centre gripping subassemblies simultaneously and realize the biaxial tension to the pipe fitting, improves tensile efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the pipe heating and stretching tool;

FIG. 2 is a schematic view of the positional relationship between the heating device and the conveying device;

FIG. 3 is a schematic structural view of the mounting plate;

fig. 4 is a side view of the pipette cutting and forming device;

fig. 5 is a top view of the pipette cutting and forming device;

FIG. 6 is a schematic view of the rotating assembly;

FIG. 7 is a schematic view of the overall structure of the conveying device;

FIG. 8 is a schematic view of the delivery assembly;

FIG. 9 is a schematic structural diagram of the carrying mechanism;

FIG. 10 is a side view of the load bearing mechanism;

FIG. 11 is a schematic view of the overall structure of the rotating assembly;

FIG. 12 is a schematic view of the overall structure of the stretching device;

FIG. 13 is a schematic structural view of the moving assembly;

FIG. 14 is a schematic view of the clamping assembly;

FIG. 15 is a schematic view of the support plate;

fig. 16 is a schematic view of the jaw mechanism.

Fig. 17 is a schematic view of the overall structure of the feeding device;

FIG. 18 is a schematic structural view of the material lifting frame and the material discharging frame;

FIG. 19 is a schematic view of the guide mechanism and the direction change mechanism;

fig. 20 is a schematic view of the mounting of the lifting rod to the guide rail.

Detailed Description

The following specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can modify the present embodiments as required after reading the present specification without any inventive contribution, but only protected by the patent laws within the scope of the appended claims.

The first embodiment is as follows:

the utility model relates to a tensile frock of pipe fitting heating, be in including platform a, setting conveyor b, the setting on the platform a are in heating device c, stretching device d and the cooling forming device e of conveyor b top, conveyor b is used for transversely placing and carrying the pipe fitting along the fore-and-aft direction about supplying the pipe fitting, the pipe fitting is the straight tube that has machine-shaping, and the pipe fitting is placed conveyor b is last later, and the positive middle part of pipe fitting corresponds conveyor b is at the ascending middle part of left right side, and above-mentioned middle part is just the pipe fitting needs the tensile position of heating, so heating device c aims at conveyor b is at the ascending middle part of left right side, just so can aim at the middle part of pipe fitting and heat. After the heating process is finished, the pipe fitting is continuously conveyed to a station where the stretching device d is located by the conveying device b, the pipe fitting is stretched to the left side and the right side by the stretching device d at the same time, and the heated part in the middle of the pipe fitting is stretched to form a required shape; after the above-mentioned steps are completed, the pipe is not yet cooled and formed, so that the drawing device d also needs to keep the pipe in a drawn state, the cooling and forming device e cools and forms the middle part of the pipe, and after the belt cooling and forming step is completed, the drawing device d stops working and releases the clamping of the pipe. Therefore, in this embodiment, the cooling and forming device e and the drawing device d are at the same station as viewed in the front-rear direction, the drawing device d acts on the left and right ends of the pipe, and the cooling and forming device e acts on the middle of the pipe, so that the cooling and forming device e is aligned with the middle of the conveying device b in the left-right direction and is used for cooling the middle of the pipe. The heating device c is located behind the cooling and forming device e as seen in the front-rear direction, so that the above-mentioned pipe processing sequence can be satisfied. This embodiment the tensile frock of pipe fitting heating can realize the local machine-shaping to the pipe fitting middle part, does not need the machine-shaping of whole pipe fitting, and the cost is lower, and machining efficiency is higher, especially when being used for processing the pipe fitting into the pipette, whole form the pipe diameter behind the tensile shaping of middle part of pipe fitting by big even diminish again by the shape of little even grow, can regard as two cusp portion to the top concatenation, as long as cut in its middle, thereby become two with the pipe fitting to the half-cut, just formed two pipettes that have the cusp portion. Therefore, the pipe heating and stretching tool of the embodiment can complete the manufacturing and forming of the tip part by locally heating and stretching the common straight pipe, the local processing cost is low, the efficiency is high, a whole body capable of being divided into two pipettes is formed, and the total production efficiency of the pipettes is also improved.

The heating to the pipe fitting needs to reach higher temperature, just can make the middle part of pipe fitting reach the degree that can be by stretch forming, adopts tools such as hot melt ware 51 that use commonly at present usually, nevertheless because carry out the local heating to the pipe fitting in this embodiment, under the prerequisite that will fully hot melt is carried out to the pipe fitting middle part to the assurance, still need avoid heat transfer to other positions of pipe fitting, avoid other positions of pipe fitting also by the hot melt, otherwise the pipe fitting can warp by a wide margin in follow-up tensile process, produces the substandard product. Therefore, the heating device c of this embodiment includes a hot melt device 51, an installation support plate 5232 and an installation joint 53, the installation support plate 5232 is provided with a heating channel 54 penetrating up and down, the installation joint 53 is fixed on the upper surface of the installation support plate 5232 and is communicated with the heating channel 54, the hot melt device 51 is fixed on the installation joint 53 and can transmit heat downwards through the heating channel 54, so that the heating channel 54 has a conduction effect on the heat emitted by the hot melt device 51, and as long as the heating channel 54 is directly aligned downwards to the middle part of the conveying device b in the left and right direction, the conveying device b conveys the pipe to the position right below the heating channel 54, and the heating device c can accurately heat the middle part of the pipe, so that the heat is concentrated on the middle part of the pipe, thereby saving energy cost, improving the efficiency of pipe heating, avoiding hot melt at other parts of the pipe, and reducing the defective rate.

In order to improve the processing efficiency, the conveying device b in the embodiment continuously conveys the pipe fittings, namely after the first conveying is stopped, the pipe fittings reach the heating station, the heated pipe fittings reach the cooling forming station, the heating process, the stretching process and the cooling forming process are respectively and simultaneously carried out, then the second conveying is carried out, new pipe fittings are conveyed to the heating station, the pipe fittings on the heating station are conveyed to the cooling forming station, the pipe fittings on the cooling forming station are conveyed to be continuously conveyed to carry out the next process, and so on, the assembly line type production is realized, and the production efficiency is improved. To realize the above production process, the stay time of the pipe in each process is consistent, the stay time depends on the longest time in the processing process, if the process is not completed, other processes, even if completed, need to stop in situ to wait for the completion of the process, and then can be completed by the conveying device b, which greatly affects the production efficiency. In this embodiment, experiments show that the time required by the heating process is longer than that of the cooling forming process, so that it is preferable that the mounting support plate 5232 extends in the front-rear direction in this embodiment, the mounting supports 5232 are provided with the plurality of mounting joints 53 at regular intervals in the front-rear direction, each mounting joint 53 is correspondingly communicated with the hot melting device 51, the heating process is divided into a plurality of times of heating, the total duration of the heating process is also divided into a plurality of parts, so that the duration of each heating is consistent, and is consistent with the duration of the stretching and cooling forming processes, thus avoiding the situation that one process waits for the completion of the processing of the other processes, realizing continuous processing, and effectively improving the production efficiency. The pipe fitting can reach the required hot melting degree after being heated every time, and the pipe fitting can enter the subsequent stretching and cooling forming processes after the heating process is completed.

After the heating process is divided into a plurality of times of heating, the pipe is located below the first heating channel 54 after being conveyed for one time, the pipe is located below the second heating channel 54 after being conveyed for the second time, the pipe is located below the third heating channel 54 after being conveyed for three times, the pipe is not heated in the conveying process, the heating is interrupted, and the instant effect that the hot melt device 51 heats the pipe again after entering the position below the next heating channel 54 is inferior to the uninterrupted continuous heating, which can lead to the total duration of the whole heating process to be longer. Therefore, in this embodiment, it is preferable that the heating device c further includes a heating head 55 fixed on the lower surface of the mounting support plate 5232 and corresponding to the heating channel 54, the heating head 55 encloses a cavity which is vertically through and communicated with the heating channel 54, the heating head 55 gathers the heat transferred downward, so as to reduce the heat diffusion toward the periphery, and transfer the heat downward to the pipe as much as possible, thereby improving the heating efficiency, shortening the total time of the heating process, and improving the production efficiency. Further, the temperature of each heating head 55 in the heating device c is preferably consistent, so that the heating efficiency is ensured, and meanwhile, the pipe fitting is ensured to reach a more accurate hot melting degree.

After the pipe fitting is heated, the pipe fitting enters a stretching process to be stretched, specifically, the stretching device d comprises a left clamping component 6, a right clamping component 6 and a moving component 7 capable of driving the clamping components 6 to move left and right, after the pipe fitting reaches a stretching station, the left clamping component 6 clamps the left end part of the pipe fitting, the right clamping component 6 clamps the right end part of the pipe fitting, then the moving component 7 simultaneously drives the left clamping component 6 and the right clamping component 6 to move back and forth for the same distance, the heated part in the middle of the pipe fitting is stretched to form two symmetrical sharp mouth parts, the left sharp mouth part and the right sharp mouth part are as symmetrical and consistent as possible, the product quality is guaranteed, in addition, the middle part of the pipe fitting is still located in the middle part of the conveying device b in the left and right directions, and preparation is made for a subsequent cooling forming process. After the pipe fitting is stretched, the middle part of the pipe fitting is not cooled and formed, so that the stretching device d needs to be kept in the stretching state of the pipe fitting in the whole cooling and forming process, and the pipe fitting is prevented from generating other deformation; and in this embodiment cooling forming device e is including the jet-propelled pipe e2 that has air cock e1, jet-propelled pipe e2 can be through air cock e1 blowout cooling air, air cock e1 is located about two centre gripping subassembly 6 is middle and directional conveyor b is at the ascending middle part of left right side, and on this station was transported to the pipe fitting like this, air cock e1 just can aim at the middle part of pipe fitting and spout, makes the quick cooling shaping in middle part of pipe fitting.

According to the processing steps, the pipe fitting is required to be always kept in a left-right transverse placement state, the middle part of the pipe fitting is always positioned in the middle part of the conveying device b in the left-right direction, and the middle part of the pipe fitting is convenient to process. Therefore, the conveying device b of the present embodiment preferably comprises a conveyor belt 1 and conveying assemblies 2 mounted on the conveyor belt 45 side by side at regular intervals in the front-rear direction, wherein the conveying assemblies 2 are provided with accommodating grooves 21 extending laterally from left to right, and the accommodating grooves 21 are used for placing pipe fittings laterally from left to right. In this embodiment, the distance between two adjacent heating channels 54 is the same as the distance between the last heating channel 54 and the air nozzle e1 of the air injection pipe e2, as viewed in the front-rear direction, and the conveying assemblies 2 in the conveying device b are uniformly spaced, and when one conveying assembly 2 is located directly below one heating channel 54, the adjacent conveying assembly 2 is located directly below the adjacent heating channel 54 or directly below the adjacent air nozzle e1, in short, in the processing stage of short stay after each transportation, one conveying assembly 2 is located below each heating channel 54 and air nozzle e1, so that continuous processing is realized, and the production efficiency is improved.

In the heating process, if the pipe remains stationary on the conveying device b, the heating device c can only heat the upward surface of the pipe, the downward surface of the pipe is not heated well, the total heating process time is increased, the production efficiency is affected, the middle part of the pipe is not heated uniformly, the subsequent part to be stretched is not uniformly heated in the circumferential direction, and defective products are generated. Therefore, in this embodiment, it is preferable that the conveying device b further includes a rotating assembly 4 located above the conveying assembly 2, the rotating assembly 4 includes a roller 41 and a driving mechanism 43 for driving the roller 41 to rotate, the roller 41 is used for abutting against the pipe, and when the driving mechanism 43 drives the roller 41 to rotate, the roller 41 can drive the pipe to rotate in the accommodating groove 21. Therefore, the roller 41 in the rotating assembly 4 is arranged on the heating station, after the pipe fitting is conveyed to the heating station, the roller 41 abuts against the pipe fitting and drives the pipe fitting to rotate, the heating device c can heat the pipe fitting uniformly in the circumferential direction at the moment, the stretching quality of the subsequent pipe fitting is improved by ensuring the uniform heating effect, the time of the heating process is shortened, and the production efficiency is improved.

After the pipe fitting is sequentially heated, stretched and cooled in the pipe fitting heating and stretching tool for forming, two symmetrical and integrated sharp mouths are formed in the middle of the pipe fitting, namely, two left and right symmetrical pipettes are formed, at the moment, the pipe fitting needs to be split in the middle of the two sharp mouths, the pipe fitting is half-cut into the two pipettes in the left and right directions, and a final pipette finished product is obtained. Therefore the utility model relates to a pipette cutting former, include the tensile frock of pipe fitting heating is still including setting up the cutting assembly 8 of conveyor b top, cutting group price is located cooling forming device e the place ahead, and the pipe fitting is transported to cutting assembly 8 below after the cooling shaping promptly, cutting assembly 8 includes elevating system 81, installs knife rest 82 on elevating system 81 and install cutter 83 on the knife rest 82, elevating system 81 can drive knife rest 82 reciprocates, and when the pipe fitting was located cutting assembly 8 below, elevating system 81 drove knife rest 82 and moves down, makes cutter 83 cutting pipe fitting, obtains two pipettes. However, the cutter 83 directly extrudes and cuts the pipe fitting downwards, and large pressure is required, and the pipe fitting may deform or even break in the process, so the cutting assembly 8 can also be used together with the rotating assembly 4, that is, the rotating assembly 4 is arranged on the cutting station, and the rotating assembly 4 is started to drive the pipe fitting to rotate in the cutting process, so that the cutter 83 is not required to have large cutting depth on the pipe fitting, the cutting depth is only required to reach the wall thickness of the pipe fitting, the pipe fitting can be cut off by completing the cutting of the pipe fitting by the cutter 83 through the rotation of the pipe fitting, the cutting difficulty is reduced, the cutter 83 is not required to have large extrusion force on the pipe fitting, and the stability of the pipe fitting during cutting is improved.

The conveying device b in the first embodiment adopts the specific implementation manner in the second embodiment, and the stretching device d in the first embodiment adopts the specific implementation manner in the third embodiment.

The second embodiment:

the utility model relates to a pipe fitting conveyor, include conveyer belt 1 and install side by side along the fore-and-aft direction conveying assembly 2 on the conveyer belt 1, conveying assembly 2 has opening up and controls horizontal extension's holding tank 21, holding tank 21 is used for placing the pipe fitting, conveying assembly 2 has process tank 22 at the ascending middle part of left and right sides side, process tank 22 will holding tank 21 divide into about the spaced two parts. The conveying device of the embodiment is mainly used for conveying the pipe fittings on a processing production line, and the middle parts of the conveyed pipe fittings need to be processed, for example, the conveying device is used for processing the middle parts of the pipe fittings while conveying the pipe fittings. Therefore, the conveying assembly 2 of the embodiment is provided with the accommodating groove 21 for the pipe fittings to be transversely placed left and right, so that the axial direction of the pipe fittings is consistent with the extending direction of the accommodating groove 21, the pipe fittings are stably and reliably placed on the conveying assembly 2, and the pipe fittings are not easy to shift in position in the subsequent processing process; in addition, after the pipe is placed in the accommodating groove 21, due to the existence of the processing groove 22, the middle part of the pipe is suspended above the processing groove 22, that is, the middle part to be processed on the pipe is not in contact with the body of the conveying assembly 2, so that the interference of the solid structure of the conveying assembly 2 on the pipe processing can be avoided in the subsequent processing process, especially in the pipe heating and stretching forming process in the first embodiment, in the case of hot melting of the middle part of the pipe, the contact of any other part with the part can affect the forming effect of the part, which results in a defective product, while in the embodiment, the existence of the processing groove 22 avoids the above situation, and effectively ensures the pipe processing quality.

If the conveying assembly 2 is structurally a complete whole, the cost of forming the processing groove 22 in the middle thereof is relatively high, so in this embodiment, it is preferable that the conveying assembly 2 includes two bearing mechanisms 3 arranged at intervals left and right, the processing groove 22 is defined between the two bearing mechanisms 3, the bearing mechanism 3 has a bearing groove 31 extending transversely left and right, the left and right bearing grooves 31 are correspondingly communicated left and right to form the accommodating groove 21, that is, the accommodating groove 21 is divided into the left and right bearing grooves 31 by the processing groove 22, but the left and right bearing grooves 31 are still communicated left and right in space, so as to accommodate the placement of pipes. The processing tank 22 is naturally formed at the middle interval of the left and right bearing mechanisms 3, special processing is not needed, the manufacturing cost of the processing tank 22 is reduced, in addition, the left and right bearing mechanisms 3 are independent individuals, the position of the processing tank 22 is not provided with a solid structure of the conveying assembly 2, and the manufacturing cost of the conveying assembly 2 is also reduced; in addition, when any one bearing mechanism 3 in the same conveying assembly 2 is damaged or fails and needs to be replaced, only the damaged or failed bearing mechanism 3 needs to be replaced, and the other bearing mechanism 3 does not need to be replaced, so that the maintenance cost is reduced.

The bearing mechanism 3 comprises a left support plate 32, a right support plate 32 and at least two bearing rollers 33 transversely erected between the two support plates 32 from left to right, the bearing groove 31 is formed between every two adjacent bearing rollers 33, the support plates 32 are provided with bearing openings 321 which are correspondingly communicated with the bearing grooves 31 and open upwards, when a pipe fitting is placed in the accommodating groove 21, one part of the left side of the pipe fitting is located in the bearing groove 31 on the left side, one part of the right side of the pipe fitting is located in the bearing groove 31 on the right side, the bearing rollers 33 are cylindrical, and the pipe fitting is a circular straight pipe, so that the contact between the pipe fitting and the bearing rollers 33 is two tangential line contacts, the contact area between the pipe fitting and the conveying assembly 2 is reduced as much as possible, the abrasion of the bearing rollers 33 on the surface of the pipe fitting is reduced, and convenience is provided for the rotation of the pipe fitting which may occur in the subsequent processing. In actual processing, the lengths of the pipes are different, and if the pipes are long, the left and right end portions of the pipes need to extend out of the bearing mechanism 3, that is, the bearing mechanism 3 actually only directly supports the portion between the left and right end portions and the middle portion of the pipe, so the support plate 32 of this embodiment is provided with the bearing opening 321, the pipe can extend out of the bearing mechanism 3 from the bearing opening 321, and thus the conveying assembly 2 can be used for conveying pipes with different length specifications. The pipe fitting has two links of material loading and unloading on conveyor, and this embodiment is preferred bear mouthful 321 and have two slope spigot surfaces 322 around, control two slope spigot surfaces 322 and make bear mouthful 321 and be big-end-up's opening shape, no matter so carry out material loading and unloading with what kind of mode, the pipe fitting of all being convenient for falls into among the holding tank 21, the pipe fitting of also being convenient for breaks away from holding tank 21 improves the efficiency of material loading, unloading. In addition, in the present embodiment, the support plate 32 is a boundary of the carrying mechanism 3, the two support plates 32 at the left and right intervals surround the processing groove 22, and the processing groove 22 and the carrying roller 33 are isolated, so that in the subsequent heating process, the support plate 32 can isolate heat, the reduction of the service life of the carrying roller 33 due to long-time heating is avoided, and the situation that the carrying roller 33 may be locally hot-melted is avoided, and in practical implementation, the support plate 32 is made of a metal material, and the carrying roller 33 is made of a material such as plastic or nylon.

The conveying device of the present embodiment conveys the pipe to realize the production line type efficient processing and manufacturing, but in some processes, for example, in the first embodiment, the process of heating the pipe, the pipe needs to be capable of rotating on its own axis to realize the uniform and efficient heating. In order to meet the above requirements, the present embodiment preferably further includes a rotating assembly 4 disposed above the conveying assembly 2, where the rotating assembly 4 includes a fixing frame 42, a roller 41 mounted on the fixing frame 42 and extending out of the fixing frame 42, and a driving mechanism 43 driving the roller 41 to rotate, the roller 41 is configured to abut against the pipe and drive the pipe to rotate in the accommodating groove 21, the bearing roller 33 is capable of rotating around its own central axis relative to the supporting plate 32, the roller 41 is disposed above a station where the pipe needs to rotate, after the pipe is conveyed to the station, the roller 41 abuts against the pipe and presses the pipe on the bearing roller 33, the driving mechanism 43 drives the roller 41 to rotate, and then the pipe can be driven to rotate around its own axis in the bearing groove 31 by the rolling friction force, and meanwhile, the bearing roller 33 also rotates around its own central axis under the rolling friction force, so that the pipe smoothly rotates, and the pipe processing is performed cooperatively. The bearing roller 33 is in tangential line contact with the pipe fitting, so that resistance to pipe fitting rotation is reduced, and the pipe fitting rotation is facilitated. The pipe fitting placed on the conveying assembly 2 is partially dropped on the bearing mechanism 3, and is partially in a suspension state, if the roller 41 abuts against the suspension portion of the pipe fitting, the pipe fitting can be obviously pressed and deformed, and even the whole position of the pipe fitting can be deviated, so that the roller 41 is arranged above the bearing mechanism 3, the part abutted against by the roller 41 on the pipe fitting abuts against the bearing mechanism 3, and the pipe fitting is wholly in a stable placing state and can not be obviously bent and deformed. Preferably, the left rotating assembly 4 and the right rotating assembly 4 are arranged side by side to form a rotating unit, the rotating unit is used for driving the same pipe to rotate, the rotating assembly 4 on the left side is used for driving the part of the pipe located on the left side in the bearing mechanism 3, and the rotating assembly 4 on the right side is used for driving the part of the pipe located on the right side in the bearing mechanism 3, so that the overall stability of the pipe during rotation is further improved. However, the roller 41 abuts against the pipe at a single point, although the roller 41 abuts against two left and right points of the same pipe in the above scheme, the pipe mainly has a larger pressure between the two points and the bearing roller 33, so that the friction force is larger, and the pressure between other points and the bearing roller 33 is smaller, so that the friction force is smaller, and the difficulty in driving the pipe and the bearing roller 33 to rotate simultaneously by only two points with larger friction force is larger, so that the bearing roller 33 is likely to be unable to be driven to rotate, and at this time, the pipe may be unable to rotate, even if the pipe is able to rotate, the outer surface of the pipe and the bearing roller 33 are also in sliding friction, which causes serious abrasion of the outer surface of the pipe. In order to avoid the above situation, in this embodiment, preferably, a circle of buffer groove 331 is formed in the position, corresponding to the roller 41, of the bearing roller 33 along the circumferential direction, the width of the buffer groove 331 in the left-right direction is smaller, when the roller 41 abuts against the pipe, the abutted part of the pipe is slightly pressed into the buffer groove 331, the pipe generates slight local deformation, but the parts, located on the left side and the right side of the abutted part, of the pipe are pressed downwards and abut against the bearing roller 33, the parts on the left side and the right side are two parts which are longer in the left-right direction, the pressure between the bearing roller 33 and the pipe is also larger, and the rolling friction force is also larger; compared with the original scheme that the positions of two points of the pipe, which are only abutted by the roller 41, on the pipe and the large pressure exists between the bearing rollers 33, the improved scheme is that the large pressure exists between the bearing rollers 33 and the continuous parts, which are long at the left and right sides and are at the positions of two points of the pipe, which are abutted by the roller 41, on the pipe, so that the rolling friction force between the whole pipe and the bearing rollers 33 is improved, the bearing rollers 33 can rotate together with the pipe under the driving of the roller 41, and the pipe can be ensured to rotate smoothly.

The conveying assemblies 2 are arranged at intervals in the front-back direction, pipe fittings are placed on each conveying assembly 2, when the conveying device is used on a processing production line, each conveying assembly 2 is conveyed forwards by the conveying belt 1, each conveying assembly 2 sequentially passes through each processing station, and the pipe fittings placed on each conveying assembly 2 completely go through the whole processing process once. In order to further improve the efficiency, it is preferable that the carrying mechanism 3 includes three carrying rollers 33 evenly spaced side by side in this embodiment to form two carrying grooves 31, so that two pipes can be placed on the carrying assembly formed by the left and right carrying mechanisms 3 at a time, and the two pipes undergo processing synchronously, thereby effectively improving the processing efficiency. In this case, the two pipes on the same conveying assembly 2 are relatively close to each other, and if each pipe needs a roller 41 to rotate, the cost is increased, and the two rollers 41 on the same station are too close to each other, so that the design needs to avoid mutual interference during assembly and operation, and a plurality of new problems are introduced. Therefore, in this embodiment, it is preferable to use one roller 41 to simultaneously drive two pipes placed on the same supporting mechanism 3 to rotate, so that the roller 41 is required to be located right above the middle of two supporting grooves 31 on the supporting mechanism 3, and the roller 41 can simultaneously abut against the two pipes; however, in this case, a part of the roller 41 extends into the space between the two pipes to achieve simultaneous abutting of the two pipes, that is, the lowest point of the roller 41 is lower than the highest point of the pipe, so that when the conveying assembly 2 drives the pipe into or out of the station, the roller 41 needs to move upward as a whole to be able to not block the pipe. Therefore, in this embodiment, it is preferable that the rotating assembly 4 further includes a pressing mechanism 44, the pressing mechanism 44 includes a push rod 441 and a compression spring 442, the push rod 441 is mounted on the fixed frame 42 and can move up and down, one end of the compression spring 442 is connected to the lower end of the push rod 441, the other end of the compression spring is connected to the fixed plate, and the roller 41 is configured to simultaneously abut against two pipes on the same supporting mechanism 3. When the roller 41 abuts against the pipe, the pushing rod 441 is pushed downward by the upward and downward expanding force of the compression spring 442, so as to realize the abutment of the roller 41 against the pipe with larger pressure, and when the conveying assembly 2 drives the pipe to enter or leave the station together, one of the pipes presses the roller 41 upward during the movement, the compression spring 442 is compressed, the pushing rod 441 is pushed upward, and in any case, the pipe eliminates the blockage of the roller 41 by squeezing the roller 41 open.

Since there are usually multiple stations on the production line where the tube is rotated, rollers 41 are required at these stations, and if each roller 41 is operated independently, a driving mechanism 43 is required for each roller 41, which is too costly. Therefore, in this embodiment, it is preferable that the fixing frame 42 extends in the front-back direction, a plurality of the pressing mechanisms 44 are disposed on the fixing frame 42 at intervals in the front-back direction, and each of the pressing mechanisms 44 is disposed with the roller 41; the rotating assembly 4 further comprises a transmission belt 45 and two transmission wheels 46, the transmission wheels 45 are surrounded into a circle, the transmission wheels 46 support the transmission belt 45 and can drive the transmission belt 45 to circularly advance, the rollers 41 are abutted against the transmission belt 45, the transmission belt 45 is used for separating between the rollers 41 and pipe fittings, the driving mechanism 43 drives the transmission belt 45 to circularly advance by driving the transmission wheels 46 to rotate, the transmission belt 45 can simultaneously drive all the rollers 41 to rotate, the cost of the driving mechanism 43 is effectively saved, the consistency of the rotation rates of all the rollers 41 is further improved, and the processing effect is improved. In addition, the conveying belt 1 can be made of soft materials with large friction coefficients, and the difficulty of driving the pipe fitting to rotate is reduced.

Example three:

the utility model relates to a draw gear for pipe fitting hot drawing shaping, including the centre gripping subassembly 6 that two symmetries about set up and can drive the removal subassembly 7 that removes about centre gripping subassembly 6, centre gripping subassembly 6 includes clamping jaw mechanism 61 and opening and shutting mechanism 62, clamping jaw mechanism 61 is used for pressing from both sides tight pipe fitting, opening and shutting mechanism 62 can drive clamping jaw mechanism 61 opens and shuts. The stretching device of this embodiment is mainly to controlling the pipe fitting of transversely placing, is cliped the left end portion of pipe fitting by centre gripping subassembly 6 on the left when stretching the pipe fitting, is cliped the right end portion of pipe fitting by centre gripping subassembly 6 on the right, then uses removal subassembly 7 promotes one or two centre gripping subassemblies 6 and removes and increase the interval between two centre gripping subassemblies 6 to the realization is to the stretching of pipe fitting. The pipe fitting is cliied simultaneously to two centre gripping subassemblies 6 about this embodiment, and the centre gripping situation on both sides is the same about to the pipe fitting, and arbitrary one side is stretched it and can both reach anticipated tensile effect, in addition removal subassembly 7 can also promote two centre gripping subassemblies 6 realization simultaneously and improve tensile efficiency to the biaxial stretching of pipe fitting. In a preferred scheme of this embodiment, the moving assembly 7 can simultaneously drive the left and right clamping assemblies 6 to move back and forth, so as to realize efficient stretching; the part of the pipe fitting to be stretched and formed can achieve the stretching effect with symmetrical and consistent two sides as much as possible, and the stretching quality is improved; in addition, although the whole stretched part of the pipe is stretched, the whole stretched part is still approximately at the original position when viewed in the left-right direction, the position of the stretched part does not need to be adjusted additionally when the stretched part is moved in the front-back direction and is subjected to subsequent processing, for example, the stretching device is used for producing a pipette in the first embodiment, after the middle part of the pipe is stretched in the two directions simultaneously, the whole stretched part is still at the middle part of the conveying device in the left-right direction, the alignment of subsequent processing stations is not influenced, and the overall production efficiency can be improved.

The moving assembly 7 in this embodiment includes a guide mounting rod 71 and a first air cylinder 72, which are transversely arranged left and right, the guide mounting rod 71 is used for mounting the clamping assembly 6, and the first air cylinder 72 is connected with the clamping assembly 6 and can push the clamping assembly 6 to move along the guide mounting rod 71; the guide mounting rod 71 defines a moving path of the clamping assembly 6, and the machining precision and the mounting position precision of the guide mounting rod 71 can be relatively easily achieved to a high degree, so that the moving path precision of the clamping assembly 6 is high, the drawing direction precision is high when the pipe fitting is drawn, and the drawing quality is further improved; the first cylinder 72 adopts a common cylinder form, has large output force, and has high pushing speed on the clamping assembly 6, so that the pipe fitting drawing speed is increased, the processing efficiency is improved, and in addition, the cylinder also has the advantages of strong adaptability, convenience in installation and maintenance and the like. The first air cylinder 72 pushes the clamping assembly 6 quickly, and can be regarded as an emergency stop at the end of each pushing stroke, while the main body part of the clamping assembly 6 is usually made of steel structure, and is heavy, the inertia is large at the emergency stop, the overall stability is affected, and the force of the first air cylinder 72 on the clamping assembly 6 is suddenly changed from pushing force to pulling force at the emergency stop, and the burden of the first air cylinder 72 is heavy. Therefore, in this embodiment, it is preferable that the moving assembly 7 further includes a buffer mechanism 73, the buffer mechanism 73 includes a baffle 731 fixed on the guide mounting rod 71 and a ripple buffer hose 732 sleeved on the guide mounting rod 71, one end of the ripple buffer hose 732 abuts against the baffle 731, and the other end of the ripple buffer hose 732 abuts against the clamping assembly 6, and abuts against the ripple buffer hose 732 before the clamping assembly 6 stops, and the resistance of the ripple buffer hose 732 to the clamping assembly 6 can improve the stability of the clamping assembly 6 when the clamping assembly 6 stops. In this embodiment, the clamping assemblies 6 move back and forth by being pushed by the moving assembly 7, after the stretching is completed, the clamping assemblies 6 move back and forth to the initial position without being pushed by the first air cylinder 72, and the clamping assemblies 6 move and reset after the first air cylinder 72 is depressurized, so that the above sudden stop phenomenon mainly aims at the situation that the clamping assemblies 6 move back and forth, and for the clamping assemblies 6 on the left side, the buffer mechanisms 73 are arranged on the left side of the clamping assemblies, and for the clamping assemblies 6 on the right side, the buffer mechanisms 73 are arranged on the right side of the clamping assemblies.

In this embodiment, the clamping assembly 6 further includes a fixing slider 63 and a supporting plate 64, the fixing slider 63 is mounted on the guide mounting rod 71 and can move along the guide mounting rod 71, the upper end of the supporting plate 64 is fixed on the fixing slider 63, the lower end of the supporting plate is fixedly connected to the opening and closing mechanism 62, and the clamping jaw mechanism 61 is fixedly connected to the opening and closing mechanism 62. The clamping assembly 6 is specially matched with the guide mounting rod 71 through the fixed sliding block 63, so that the whole clamping assembly 6 is stably connected with the guide mounting rod 71, and the supporting plate 64 facilitates the installation of the opening and closing mechanism 62 and the clamping jaw mechanism 61. The supporting plate 64 is an integrally formed structure, and is reliable and cannot be easily deformed, so that the supporting plate 64 itself has little influence on the position accuracy of the clamping mechanism 61, and mainly the mounting accuracy between the supporting plate 64 and the fixed slider 63 has influence on the position accuracy of the clamping mechanism 61. Therefore, in the present embodiment, it is preferable that the supporting plate 64 includes an upper fixing portion 641, a lower fixing portion 642 and a linking portion 643 located between the upper fixing portion 641 and the lower fixing portion 642, the upper fixing portion 641 is a straight plate structure extending along a vertical direction and having two left and right vertical outer side walls, the fixing slider 63 is provided with an installation groove 631 extending along a vertical direction and having a vertical inner side wall, the upper fixing portion 641 is fixedly installed in the installation groove 631, and the vertical outer side wall abuts against the vertical inner side wall, so as to ensure that the upper fixing portion 641 does not easily generate a position deviation relative to the fixing slider 63, and improve the position accuracy of the supporting plate 64 relative to the fixing slider 63, thereby ensuring the position accuracy of the clamping mechanism and further ensuring the stretching quality.

In a further improvement, the connection part 643 is a straight plate structure extending in the left-right lateral direction, one end of the connection part 643 in the left-right direction is connected to the upper fixing part 641, and the other end is connected to the lower fixing part 642, the fixing part is located above the connection part 643, and the lower fixing part 642 is located below the connection part 643. Through the two times of bending of the whole supporting plate 64, the length of the whole supporting plate 64 in the vertical direction is shortened, and the space occupation in the vertical direction is reduced; the extending direction of the connection part 643 is consistent with the moving direction of the clamping component 6, so that the force transmission effect is better; in addition, the structural strength of the support plate 64 itself is increased. In this embodiment, the clamping jaw mechanism 61 includes a guide plate 611 and two upper and lower clamping plates 612, a guide groove 613 is formed in the guide plate 611 along the vertical direction, one end of the clamping plate 612 is mounted on the guide plate 611 and can move along the guide groove 613, and the opening and closing mechanism 62 pushes the clamping plates 612 to move in opposite directions and in opposite directions, so as to achieve opening and closing. When the stretching device is used in the first embodiment, two pipes are placed on one conveying assembly 2 at the same time, the clamping plate 612 can clamp the two pipes at the same time by moving up and down, simultaneous stretching and forming of the two pipes are achieved, and the stretching device is matched with the conveying assembly 2 to improve machining efficiency. The opening and closing mechanism 62 comprises a second cylinder fixed on the lower fixing portion 642, the guide plate 611 is installed on the second cylinder, the second cylinder is connected with the clamping plate 612 and can drive the clamping plate 612 to move along the guide groove 613, the advantages of large cylinder output force and high pushing speed are utilized, and the stretching efficiency is improved.

Further, preferably, the clamping jaw mechanism 61 further includes a clamping head 614 fixed on the clamping plate 612, the upper and lower clamping heads 614 are vertically symmetrical and oppositely arranged, a clamping pad 615 is fixed on the clamping head 614, an arc-shaped clamping groove 616 is formed on the clamping pad 615, and the upper and lower arc-shaped clamping grooves 616 on the clamping pad 615 vertically correspond to each other. The pipe fitting is clamped by the two clamping heads 614, the formation that the clamping plate 612 needs to move is reduced, the cost is reduced, the efficiency is improved, the force transmission effect is better, and the clamping effect is also better. The clamping head 614 and the clamping plate 612 are both steel structures, so that the clamping head and the clamping plate are firmly fixed, but the friction coefficient of the clamping head 614 is small, and the clamping effect on the pipe fitting is poor, so that the clamping head 614 contacts the pipe fitting through the clamping pad 615, the clamping pad 615 can select plastic parts with large friction coefficient and soft texture, the clamping force of the clamping head 614 on the pipe fitting is improved, the abrasion of the pipe fitting due to clamping can be reduced, the shape of the arc-shaped clamping groove 616 is matched with the shape of the outer contour of the pipe fitting, the contact area is increased, and the clamping effect is improved.

Example four:

the utility model relates to a pipe fitting loading attachment, including lifting frame 1, play work or material rest 2, lifting subassembly 3 and direction subassembly 4, lifting subassembly 3 sets up on lifting frame 1 and can go forward upward and carry out the material lifting, it is connected in lifting frame 1 upper end and being used for accepting the pipe fitting that falls out from lifting subassembly 3 to go out work or material rest 2, direction subassembly 4 is installed on play work or material rest 2; the guide assembly 4 includes steering mechanism 42 and at least two sets of guiding mechanism 41, guiding mechanism 41 includes the guide rail 411 that two at least controls side by side interval setting, and is at least a set of guiding mechanism 41 corresponds and connects a set of steering mechanism 42, steering mechanism 42 can change guide rail 411 for the inclination of play work or material rest 2. In the embodiment, the pipe fitting is lifted to the uppermost end from bottom to top by the lifting assembly, then the pipe fitting is separated from the lifting assembly and falls onto the discharging rack 2, and the feeding device is used for feeding the pipe fitting to the pipe fitting processing equipment in actual use, so that the pipe fitting falls from the discharging rack 2, namely falls onto the matched pipe fitting processing equipment to complete feeding; the guide assembly 4 in this embodiment can realize the guiding effect to the pipe fitting in the process that the pipe fitting falls out from the discharging frame 2, the guide assembly 4 includes at least two sets of guide mechanisms 41, and any one set of the guide mechanisms 41 can guide the pipe fitting and determine the falling direction of the pipe fitting, so as to determine the specific position of the pipe fitting on the pipe fitting processing equipment and realize the multi-directional feeding of the pipe fitting. When the feeding device of this embodiment transports the pipe, the whole pipe is in a state of being horizontally placed from left to right, so the balance of the pipe can be ensured only by the guiding mechanism 41 realizing at least two-point support for the pipe, so the guiding mechanism 41 includes at least two guide rails 411 arranged side by side from left to right. The guiding direction of the pipe by the guiding mechanism 41 depends on the inclination angle of the guide rail 411 of the guiding mechanism with respect to the discharging rack 2, so the direction changing mechanism 42 changes the inclination angle of the guide rail 411 with respect to the discharging rack 2 to adjust the guiding direction of the pipe by the guiding mechanism 41 in the embodiment. It should be noted that in the present embodiment, the guiding assembly 4 guides the pipe by the set of guiding mechanisms 41 with the highest overall height, and when the pipe falls from the discharging rack 2 onto the guiding assembly 4, the pipe is always received by the guide rail 411 with the highest overall height, and the pipe does not fall onto the other guide rails 411 with the lower overall height, so when determining to guide the pipe by a certain set of guiding mechanisms 41, it is necessary to ensure that all the other guiding mechanisms 41 are lower than the set of guiding mechanisms 41, and the guiding is achieved by the direction changing mechanism 42.

In this embodiment, the direction changing mechanism 42 preferably includes a lifting rod 421 having one end connected to the guide rail 411 and the other end connected to the discharging frame 2, and the lifting rod 421 can push the guide rail 411 to change the inclination angle of the guide rail 411 relative to the discharging frame 2; specifically, the lifting lever 421 can change a length by telescoping, thereby achieving pushing and pulling of the guide rail 411. Two embodiments exist for the change of the inclination angle of the guide rail 411 relative to the discharging frame 2; one is that the guide rail 411 is a wood-plastic plate with one end fixed on the discharging frame 2, and the lifting rod 421 can push the guide rail 411 to bend and deform; the other is that the guide rail 411 is a metal plate with one end rotatably connected to the discharging frame 2, and the lifting rod 421 can push the guide rail 411 to rotate relative to the discharging frame 2. The two embodiments can realize the change of the inclination angle of the guide rail 411 relative to the discharging frame 2, wherein the manufacturing cost of the guide rail 411 in the first embodiment is lower, but the precision is poorer, the cost of the guide rail 411 in the second embodiment is higher, but the precision is higher, the guide rail 411 is more durable, the connection between the discharging frame 2 and the lifting rod 421 is firmer, and the reliability is higher. The guide rail 411 in this embodiment is preferably the second embodiment described above.

In this embodiment, the lifting assembly 3 includes a lifting belt 31 and a lifting seat 32 fixed on the lifting belt 31, the lifting belt 31 surrounds the lifting frame 1 to form a circle and can move circularly, the lifting frame 1 supports the lifting belt 31 and is used for installation, the upper end of the lifting frame 1 is provided with fixing portions 11 extending out of the left and right sides of the lifting belt 31, the discharging frame 2 is provided with a left connecting portion 21 and a right connecting portion 21, the left connecting portion 21 is fixedly connected to the left fixing portion 11, the right connecting portion 21 is fixedly connected to the right fixing portion 11, an avoiding groove 22 for the lifting assembly 3 to pass through is formed between the left connecting portion 21 and the right connecting portion 21, and the avoiding groove 22 is through vertically. The pipe fitting is born through lifting work or material rest 1 to lifting subassembly 3, then drives through lifting area 31 and lifts work or material rest 1 and up march to the realization is to the lifting of pipe fitting, and lifting area 31 turns round and down marchs in the top, so after lifting work or material rest 1 is driven to the top, lifts work or material rest 1 and also begins to change into and down march, and the pipe fitting just breaks away from lifting subassembly 3 this moment, falls on ejection of compact frame 2. Go out to be formed with between two connecting portion 21 about in the work or material rest 2 and dodge groove 22, lifting subassembly 3 through self the most end go back to the transformation, process dodge groove 22 and advance down, and the pipe fitting is then blockked by two connecting portion 21 about going out work or material rest 2, the pipe fitting can not follow lifting subassembly 3 and down advance together, two connecting portion 21 carries out stable two point supports to the pipe fitting. Further, in this embodiment, the discharging frame 2 further includes a mounting portion 23 connected between the left and right connecting portions 21, the guiding mechanism 41 is installed on the mounting portion 23, in order to enable the pipe fitting on the connecting portion 21 to automatically fall onto the guiding component 4 from the connecting portion 21, the connecting portion 21 is an inclined shape that is close to one end of the mounting portion 23 and is lower than the end far away from one end of the mounting portion 23, so that the pipe fitting can automatically fall onto the mounting portion 23 along the connecting portion 21, and further fall onto the guiding component 4. The installation department 23 is located the major structure of play work or material rest 2 supplies the installation of guide assembly 4, especially guide assembly 4 includes under the condition that the quantity of guiding mechanism 41 is more, installation department 23 is enough its installation also in the ascending length of left right direction. When the pipe fitting is lifted by the lifting assembly 3, the lengths of the parts, extending out of the lifting assembly 3, of the left end and the right end of the pipe fitting are approximately consistent, so that the pipe fitting is balanced left and right, and therefore, in order to improve the stability of the guide mechanism 41 for supporting the pipe fitting, the guide mechanism 41 preferably comprises two guide rails 411 which are symmetrical left and right, the distance between the two guide rails 411 and the connecting part 21 on the same side in the left and right direction is consistent, so that when the pipe fitting falls onto the two guide rails 411 in the group of guide mechanisms 41, the support of the pipe fitting by the two guide rails 411 is balanced left and right, and the stability of the pipe fitting is ensured.

In this embodiment, for realizing that the pipe fitting breaks away from lifting subassembly 3 automatically and fall on ejection of compact frame 2, need pipe fitting length to be greater than the interval between two connecting portion 21 about in ejection of compact frame 2 for two connecting portion 21 can block the pipe fitting about, under this prerequisite, for guaranteeing the stable support to the pipe fitting of different length specifications, this embodiment is preferred installation department 23 has about horizontal extension's direction slide rail 24 and installs removal slider 25 on the direction slide rail 24, guide rail 411 with lift pole 421 all connect on removing slider 25, remove slider 25 can remove the removal about on the direction slide rail 24. The guide rails 411 of each set of the guide mechanisms 41 are correspondingly connected to one of the movable sliders 25, so that the distance between the left guide rail 411 and the right guide rail 411 of each set of the guide mechanisms 41 can be adjusted to improve the support stability of the pipe fitting.

In this embodiment, the lifting seats 32 in the lifting assembly 3 are long straight blocks extending horizontally from left to right, and are arranged on the lifting belt 31 at uniform intervals along the advancing direction of the lifting belt 31, two adjacent lifting seats 32 form left and right lifting grooves for accommodating pipes, and usually only one pipe is accommodated in each lifting groove, so that continuous single lifting and conveying of the pipes are realized, and the pipes fall onto the discharging frame 2 one by one and the falling direction of the pipes is determined by the guide assembly 4. In actual production, the feeding device is used in cooperation with a pipe processing device, for example, the pipe heating and stretching tool in embodiment one, wherein the bearing mechanism in the conveying assembly has two bearing grooves spaced front and back, when the bearing mechanism stops at a station to be fed, the feeding device needs to guide a pipe to fall into one of the bearing grooves, and then guides a subsequent pipe to fall into the other bearing groove of the same bearing seat, obviously, the guiding directions of the pipes during feeding twice are different, and the guiding assembly 4 needs to adjust the inclination angle of the guiding mechanism 41 relative to the discharging frame 2. In automatic pipelined production, need automatic control direction subassembly 4 to adjust, so this embodiment is preferred still including fixing laser counter 5 on the installation department 23, laser counter 5 can save material loading figure, diversion mechanism 42 still include with lift pole 421 connection of electric lines and can control the controller of lift pole 421 operation, laser counter 5 with controller connection of electric lines and can give data transmission to the controller. Every time, the pipe fitting falls onto the discharging frame 2 from the lifting assembly 3, laser irradiation of the laser counter 5 can be carried out, the laser counter 5 can sense and transmit data to the controller, a program module between the pipe fitting feeding number and the specific adjusting action of the guide assembly 4 is arranged in the controller, and the controller can trigger a program in the controller according to the received data, so that automatic control over the direction changing mechanism 42 is achieved, and automatic adjustment of the guide mechanism 41 is achieved. Further improve, preferably a set of steering mechanism 42 includes about two lift pole 421 and one the controller, one the controller simultaneous control is two lift pole 421 synchronous operation improves the synchronism, raises efficiency and precision.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a stretching device for pipe fitting hot drawing shaping, its characterized in that, including centre gripping subassembly (6) that two symmetries about setting up and can drive remove subassembly (7) that remove about centre gripping subassembly (6), centre gripping subassembly (6) include gripper mechanism (61) and mechanism (62) that opens and shuts, gripper mechanism (61) are used for pressing from both sides tight pipe fitting, mechanism (62) that opens and shuts can drive gripper mechanism (61) open and shut.

2. Stretching apparatus for hot-drawn tube forming according to claim 1, wherein said moving assembly (7) is capable of moving said left and right gripping assemblies (6) away from each other simultaneously.

3. Stretching apparatus for the hot-drawn forming of tubes according to claim 2, wherein said moving assembly (7) comprises a guide mounting bar (71) and a first cylinder (72) transversely arranged from side to side, said guide mounting bar (71) being provided for mounting said gripping assembly (6), said first cylinder (72) being connected to said gripping assembly (6) and being capable of pushing said gripping assembly (6) to move along said guide mounting bar (71).

4. A stretching apparatus for hot-drawing forming of pipe according to claim 3, wherein said moving assembly (7) further comprises a buffer mechanism (73), said buffer mechanism (73) comprises a baffle plate (731) fixed on said guide mounting rod (71) and a corrugated buffer hose (732) sleeved on said guide mounting rod (71), one end of said corrugated buffer hose (732) abuts against said baffle plate (731) and the other end thereof abuts against said clamping assembly (6).

5. The stretching device for hot-drawing forming of pipe fittings as claimed in claim 3, wherein said clamping assembly (6) further comprises a fixed slider (63) and a support plate (64), said fixed slider (63) is mounted on said guide mounting rod (71) and can move along said guide mounting rod (71), the upper end of said support plate (64) is fixed on said fixed slider (63) and the lower end is fixedly connected with said opening and closing mechanism (62), and said clamping jaw mechanism (61) is fixedly connected with said opening and closing mechanism (62).

6. The stretching device for hot-drawing forming of pipe fittings as claimed in claim 5, wherein said supporting plate (64) comprises an upper fixing portion (641), a lower fixing portion (642) and a joining portion (643) between said upper fixing portion (641) and said lower fixing portion (642), said upper fixing portion (641) is a straight plate structure extending along the vertical direction and having two vertical outer side walls at the left and right, said fixing slider (63) is provided with a mounting groove (631) extending along the vertical direction and having a vertical inner side wall, said upper fixing portion (641) is fixedly mounted in said mounting groove (631), and said vertical outer side wall and said vertical inner side wall abut against each other.

7. The stretching apparatus for hot-drawing forming of a pipe according to claim 6, wherein the joint portion (643) is a straight plate structure extending in a left-right lateral direction, one end of the joint portion (643) in the left-right direction is connected to the upper fixing portion (641) and the other end is connected to the lower fixing portion (642), the upper fixing portion (641) is located above the joint portion (643), and the lower fixing portion (642) is located below the joint portion (643).

8. The stretching device for the hot-drawing forming of the pipe fitting as claimed in claim 7, wherein the clamping jaw mechanism (61) comprises a guide plate (611) and two upper and lower clamping plates (612), a guide groove (613) is formed in the guide plate (611) in the vertical direction, and one end of each clamping plate (612) is mounted on the guide plate (611) and can move along the guide groove (613).

9. Stretching apparatus for hot-drawing of tubes, according to claim 8, wherein said opening and closing means (62) comprise a second cylinder fixed to said lower fixing portion (642), said guide plate (611) being mounted on said second cylinder, said second cylinder being connected to said clamping plate (612) and being able to bring said clamping plate (612) to move along said guide slot (613).

10. The stretching device for the hot-drawing forming of the pipe fitting as claimed in claim 9, wherein said clamping jaw mechanism (61) further comprises a clamping head (614) fixed on said clamping plate (612), the upper and lower clamping heads (614) are disposed symmetrically and oppositely, a clamping pad (615) is fixed on said clamping head (614), an arc-shaped clamping groove (616) is formed on said clamping pad (615), and said arc-shaped clamping grooves (616) on the upper and lower clamping pads (615) correspond to each other up and down.

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