CN112570478B

CN112570478B - Internal pulling type manufacturing method of coaxial thermocouple transient heat flow sensor

Info

Publication number: CN112570478B
Application number: CN202011407817.2A
Authority: CN
Inventors: 韩桂来; 姜宗林
Original assignee: Institute of Mechanics of CAS
Current assignee: Institute of Mechanics of CAS
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-06-25
Anticipated expiration: 2040-12-04
Also published as: CN112570478A

Abstract

The invention discloses an internal pulling type manufacturing method of a coaxial thermocouple transient heat flow sensor, which comprises the following steps: the drawing rope penetrates through the perforated sensor tubular shell, the sensor wire core is drawn through the drawing rope and is drawn to penetrate into the sensor tubular shell, and the sensor tubular shell and the sensor wire core penetrating into the sensor tubular shell are cut together in a segmented mode. Avoided the sensor silk core to wear to take place the drawback that the bending is obstructed and the rupture easily to the in-process of establishing in the sensor tubulose shell, and avoided wearing to establish the length of the sensor silk core that the mode exists through modes such as inserting and be subject to the drawback of threading equipment parameter restriction, thereby can process out the heat flow sensor rudiment of long section, and carry out the segmentation cutting through the segmentation cutting to the sensor tubulose shell of wearing to be equipped with the sensor silk core and process out a plurality of heat flow sensor rudiments with fast, thereby improve coaxial thermocouple transient state heat flow sensor's machining efficiency by a wide margin.

Description

Internal pulling type manufacturing method of coaxial thermocouple transient heat flow sensor

Technical Field

The invention relates to the technical field of heat flow sensor processing, in particular to an internal pulling type manufacturing method of a coaxial thermocouple transient heat flow sensor.

Background

The coaxial thermocouple transient heat flow sensor is an experimental component which utilizes the Seebeck effect of different electrode materials to form electromotive force under the action of different temperature gradients and measure the electromotive force so as to invert the temperature and the heat flow, is mainly used for aerospace hypersonic aircraft pneumatic experiments, hypersonic flow related experiments and the like, and has the characteristics of fast response, large measuring range, high precision, strong robustness and the like.

At present, when a coaxial thermocouple transient heat flow sensor is processed, a sensor wire core needs to be arranged in a sensor tubular shell in a penetrating mode and fixed, and due to the fact that the wire diameter of the sensor wire core and the aperture of the sensor tubular shell are small, the sensor wire core is arranged in the sensor tubular shell in the penetrating mode, and the defects of high operation difficulty, high requirement on equipment precision and low efficiency exist.

Moreover, the sensor wire core is easily broken in the sensor tubular shell during the penetration, so that the sensor wire core which is used for processing a short section of a single coaxial thermocouple transient heat flow sensor is usually penetrated into the sensor tubular shell with a corresponding length in the prior art, so as to avoid the sensor wire core from being broken in the sensor tubular shell as much as possible, but the processing efficiency of the coaxial thermocouple transient heat flow sensor is further low.

Disclosure of Invention

The invention aims to provide an internal pulling type manufacturing method of a coaxial thermocouple transient heat flow sensor, which aims to solve the technical problem that in the prior art, the processing efficiency of the coaxial thermocouple transient heat flow sensor is low due to the unreasonable mode of penetrating a sensor wire core into a sensor tubular shell.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

a method for manufacturing a coaxial thermocouple transient heat flow sensor in an inner pulling mode comprises the following steps:

s100, a traction rope passes through the sensor tubular shell with the hole;

s200, enabling the traction rope to penetrate out of the free end of the sensor tubular shell to be connected with the free end of a sensor wire core to be stretched;

s300, pulling the tail end of the pulling rope to stretch the sensor wire core;

s400, releasing the stretched and thinned sensor wire core, and continuously pulling the tail end of the pulling rope until the sensor wire core passes through the sensor tubular shell under the traction of the pulling rope;

s500, carrying out sectional cutting on the sensor tubular shell and the sensor wire core penetrating through the sensor tubular shell together to form a plurality of heat flow sensor rudiments.

As a preferable aspect of the present invention, the S100 includes:

s101, a piston traction needle with the diameter matched with the aperture of the sensor tubular shell is installed at the tail end of the traction rope;

s102, inserting the piston traction needle connected with the traction rope into the penetrating end of the sensor tubular shell;

s103, pumping high-pressure air from the penetrating end of the sensor tubular shell, pushing the piston traction needle inserted into the penetrating end of the sensor tubular shell by the high-pressure air and driving the traction rope to penetrate out from the penetrating end of the sensor tubular shell.

As a preferable aspect of the present invention, the S100 further includes:

s104, stopping the piston traction needle after the traction rope penetrates out of the sensor tubular shell;

s105, inserting the intercepted piston traction needle into the penetrating end of the next sensor tubular shell;

s106, repeating the steps S102 to S105, and separating the pulling rope from the piston pulling needle after the pulling rope passes through the last sensor tubular shell.

As a preferable aspect of the present invention, the S300 includes:

s301, intermittently drawing the pulling rope at a constant speed to intermittently draw the sensor wire core;

s302, continuously carrying out wire diameter detection on the stretched sensor wire core within the time interval between two times of stretching;

s303, when the measured wire diameter value of the sensor wire core at the end of the time length is larger than the aperture of the sensor tubular shell, repeating the S301 and the S302;

and when the measured wire diameter value of the sensor wire core at the end of the time period is smaller than the aperture of the sensor tubular shell, stopping the stretching and wire diameter detection of the sensor wire core.

As a preferable scheme of the present invention, the method further comprises guiding and assisting traction of the passing traction rope and the sensor wire core between the penetrating end of the last sensor tubular shell and the penetrating end of the next sensor tubular shell.

As a preferable aspect of the present invention, the S500 includes:

s501, arranging a plurality of sensor tubular shells which are provided with sensor wire cores in a side-by-side mode;

s502, aligning the end parts of at least one end of a plurality of sensor wire cores which are arranged side by side;

s503, cutting a plurality of sensor tubular shells which are arranged side by side to form a plurality of heat flow sensor rudiments;

as a preferable aspect of the present invention, the S502 includes:

s5021, laterally limiting the plurality of side-by-side sensor tubular shells to form a whole to be divided, wherein the plurality of sensor tubular shells are parallel to each other;

s5022, arranging obstacle planes perpendicular to the axes of the sensor tubular shells in the direction right opposite to the end of the whole to be divided;

s5023, adjusting the posture of the whole to be segmented to be inclined downwards towards one end of the obstacle plane so that the whole to be segmented slides to the obstacle plane;

s5024, the obstacle plane intercepts the whole body to be segmented, so that the downward ends of the sensor tubular shells in the whole body to be segmented are aligned with the obstacle plane.

As a preferable aspect of the present invention, the S503 includes:

s5031, cutting the plurality of sensor tubular shells segment by segment from one aligned end of the plurality of sensor tubular shells to the other aligned end of the plurality of sensor tubular shells;

s5032, transferring the plurality of separated heat flow sensor prototypes positioned in the same segment in the cutting process;

s5033, repeating S5024, S5031 and S5032 in sequence until the whole to be segmented is segmented.

As a preferred aspect of the present invention, the S5031 comprises adjusting the distance between the cutting line and the obstacle plane according to the required length of the blank of the heat flow sensor before each cutting.

As a preferable aspect of the present invention, a plurality of sets of cutting members for performing the segment-by-segment cutting are provided.

Compared with the prior art, the invention has the following beneficial effects:

according to the embodiment of the invention, the drawing of the sensor wire core is realized by drawing the drawing rope, and the drawn sensor wire core is drawn to penetrate through the sensor tubular shell, so that the defect that the sensor wire core is easy to bend and break in the process of penetrating into the sensor tubular shell is avoided, the defect that the length of the sensor wire core which can be penetrated through the sensor wire core is limited by the parameter limitation of a wire penetrating device in the penetrating mode in the inserting mode and the like is avoided, a long-section prototype of the heat flow sensor can be processed, the sensor tubular shell which is penetrated through the sensor wire core is cut in sections by means of section cutting to rapidly process a plurality of prototypes of the heat flow sensor, and the processing efficiency of the transient heat flow sensor of the coaxial thermocouple is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a block diagram of a process according to an embodiment of the invention;

FIG. 2 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an active stretching apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view of a mounting base according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the rubber finger cot of the embodiment of the invention.

The reference numerals in the drawings denote the following, respectively:

1-an active stretching device; 2-clamping; 3-driven stretching device; 4-sensor wire core; 5-a sensor tubular shell; 6-a traction rope; 7-stretching the platform; 8-a guide wheel; 9-supporting the guide rail; 10-a limit chute; 11-a gear table; 12-a gear; 13-a rack;

101-a support base; 102-a push-pull mechanism; 103-a clamping mechanism; 104-a reel;

301-a paying out device;

1021-electric push rod; 1022-a mount;

1031-finger cylinder; 1032-rubber finger cot; 1033-annular groove.

Detailed Description

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

As shown in fig. 1, the present invention provides a method for manufacturing a coaxial thermocouple transient heat flow sensor in an inner pull manner, including:

s100, a traction rope passes through the sensor tubular shell with the hole;

s300, drawing the tail end of the traction rope to stretch the sensor wire core;

s400, releasing the stretched and thinned sensor wire core, and continuously pulling the tail end of the pulling rope until the sensor wire core penetrates out of the sensor tubular shell under the traction of the pulling rope;

and S500, cutting the sensor tubular shell penetrated with the sensor wire core in a segmented mode to form a plurality of heat flow sensor prototypes.

According to the embodiment of the invention, the drawing of the sensor wire core is realized by drawing the drawing rope, and the drawn sensor wire core is drawn to pass through the sensor tubular shell, so that the defects that the sensor wire core is easy to bend and break in the process of passing through the sensor tubular shell are avoided, and the defect that the length of the sensor wire core which can be penetrated through the sensor wire core is limited by the parameter limitation of wire penetrating equipment in the passing through mode such as an inserting mode is avoided, and thus the prototype of the long-section heat flow sensor can be processed.

The length of the prototype of the heat flow sensor is increased and the prototype of the heat flow sensor is combined with a segmentation cutting process, so that the times of the penetrating process can be greatly reduced when the prototypes of the heat flow sensors with the same number are produced, and the processing efficiency of the transient heat flow sensor (hereinafter referred to as the heat flow sensor) of the coaxial thermocouple can be greatly improved.

S100 includes:

s101, a piston traction needle with the diameter matched with the aperture of the tubular shell of the sensor is installed at the tail end of the traction rope;

s102, inserting a piston traction needle connected with a traction rope into a penetrating end of a sensor tubular shell;

s103, pumping high-pressure air from the penetrating end of the sensor tubular shell, pushing a piston traction needle inserted into the penetrating end of the sensor tubular shell by the high-pressure air and driving a traction rope to penetrate out from the penetrating end of the sensor tubular shell.

The diameter of the piston traction needle is the same as or slightly smaller than the aperture of the sensor tubular shell, when the free end of the traction rope is connected with the end of the piston traction needle, the piston traction needle is inserted into the penetrating end of the sensor tubular shell, high-pressure air is pumped into the opening of the sensor tubular shell from the penetrating end of the sensor tubular shell through the guide pipe, and the piston traction needle inserted into the sensor tubular shell pulls the sensor wire core to penetrate out from the penetrating end of the sensor tubular shell together under the pushing of air flow.

S100 further includes:

s104, stopping the piston traction needle after the traction rope penetrates out of the tubular shell of the sensor;

s105, inserting the intercepted piston traction needle into the penetrating end of the tubular shell of the next sensor;

s106, repeating S102 to S105, and separating the pulling rope from the piston pulling needle after the pulling rope passes through the last sensor tubular shell.

The sensor tubular shells are arranged side by side, the piston traction needle connected with the traction rope penetrates out of the penetrating end of one sensor tubular shell, the penetrating end of the penetrating piston traction needle is cut off by devices with the same function such as a mechanical arm and then inserted into the penetrating end of the next sensor tubular shell, and the piston traction needle is separated from the traction rope until the traction rope penetrates out of the last sensor tubular shell under the traction action of the piston traction needle driven by high-pressure air, and the traction rope is connected with the sensor wire core.

S300 comprises the following steps:

s301, intermittently drawing the traction rope at a constant speed to intermittently draw the sensor wire core;

s303, when the measured wire diameter value of the sensor wire core is larger than the aperture of the sensor tubular shell after the duration is finished, repeating S301 and S302;

and when the measured wire diameter value of the sensor wire core at the end of the time period is smaller than the aperture of the sensor tubular shell, stopping the stretching of the sensor wire core and the wire diameter detection.

The sensor wire core is stretched intermittently, so that the situation that all parts of the sensor wire core with long length are stretched fully is avoided, the situation that all parts of the sensor wire core are uneven in texture and even broken due to uneven extension caused by the fact that the stretching speed is too high is avoided, the wire diameter of the sensor wire core is detected in a diameter measuring mode such as laser diameter measurement, the precision of adjusting the wire diameter of the sensor wire core is improved, and the strength of the sensor wire core and the assembly degree of the sensor wire core are guaranteed.

The device also comprises a traction rope and a sensor wire core which pass through the traction rope and the sensor wire core are guided and assisted to be drawn between the penetrating end of the last sensor tubular shell and the penetrating end of the next sensor tubular shell.

For example, a rotary guide sheave is arranged between the penetrating end of the last sensor tubular shell and the penetrating end of the next sensor tubular shell, and the annular groove wall of the guide sheave is tangent to the axis of the opening of the adjacent sensor tubular shell, namely the traction rope and the sensor wire core are guided by the guide sheave, so that the traction rope, the sensor wire core and the end part of the sensor tubular shell are prevented from being scratched, the traction rope and the sensor wire core are prevented from being damaged due to scratching with the end part of the sensor tubular shell, and the resistance in pulling the traction rope and the sensor wire core is reduced.

In addition, the guide sheave can also be driven by devices such as a motor, at least the groove wall of the guide sheave is made of frosted rubber, the guide sheave is matched with intermittent stretching to perform intermittent rotation, and the rotating speed of the guide sheave is correspondingly set according to the stretching speed of the traction rope so as to assist in stretching the traction rope and the sensor wire core and avoid the defect that the sensor wire core is broken or further stretched due to overlarge resistance for stretching the sensor wire core caused by overlong length of the sensor wire core.

S500 comprises:

after the plurality of sensor tubular shells are aligned with the end parts, the sensor tubular shells are segmented and cut according to the required length, so that a plurality of rudiments of the heat flow sensor are rapidly processed, and the processing efficiency of the heat flow sensor is greatly improved.

S502 includes:

s5021, laterally limiting a plurality of parallel sensor tubular shells to form a whole to be divided, wherein the sensor tubular shells are parallel to each other;

and preferably, S5023, the posture of the whole body to be divided is adjusted to incline downwards towards one end of the obstacle plane so that the whole body to be divided slides to the obstacle plane;

and S5024, stopping the whole body to be segmented by the barrier plane so that the downward ends of the tubular shells of the plurality of sensors in the whole body to be segmented are aligned by the barrier plane.

Specifically, the plurality of sensor tubular shells are arranged side by side on the tiltable platform, and the plurality of sensor tubular shells are attached to each other by clamping two sides of the whole to be divided, and the two sides of the whole to be divided are limited, so that the aim of keeping the plurality of sensor tubular shells parallel to each other is fulfilled. Or each sensor tubular shell is limited so as to keep a plurality of sensor tubular shells parallel to each other, and the specific implementation mode is selected according to actual processing conditions.

And then, driving the platform, adjusting the platform to be inclined downwards towards one end of the obstacle plane, so that the whole body to be divided slides to the obstacle plane along the surface of the platform under the action of body gravity. The barrier plane is a baffle plate and other parts with the same function arranged at the lower end of the platform, taking the baffle plate as an example, the surface of the baffle plate facing the whole to be divided is vertical to the axes of the plurality of sensor tubular shells of the whole to be divided, so that the end parts of the plurality of sensor tubular shells of the whole to be divided are aligned by the baffle plate after the whole to be divided is stopped by the baffle plate.

S503 includes:

s5031, cutting the plurality of sensor tubular shells section by section from one aligned end of the plurality of sensor tubular shells to the other aligned end;

s5032, transferring the plurality of separated heat flow sensor prototypes positioned at the same section in the cutting process;

and S5033, repeating S5024, S5031 and S5032 in sequence until the whole to be segmented is segmented.

The cutting path for cutting the whole to be cut with the flat end part is parallel to the baffle, and the distance between the cutting path and the baffle is set according to the heat flow sensor with the required length, so that a plurality of heat flow sensor rudiments with the same length are cut by the cutting part moving along the cutting path in the whole to be cut. And the plurality of divided heat flow sensor prototypes are transferred in a manner of transferring by a manipulator and the like, and the plurality of sensor tubular shells in the whole to be cut which is inclined slide to the baffle again due to losing the support of the corresponding heat flow sensor prototypes, so that one ends of the plurality of sensor tubular shells in the whole to be divided are aligned by the baffle again until the whole to be divided is divided.

The whole to be segmented is inclined and cut segment by segment, so that automatic feeding of the segmented cutting process is realized, and the automatic feeding mode is simple and reliable.

In an actual production process, a plurality of lengths of the heat flow sensor prototypes may need to be divided from the same to-be-divided whole, and in order to adapt to the situation, S5031 includes adjusting the distance between the cutting line and the barrier plane according to the required length of the heat flow sensor prototypes before each section is cut, so as to adjust the length of each divided section of the heat flow sensor prototypes.

In addition, in order to improve the cutting efficiency of the whole belt cutting with more sensor tubular shells, at least two groups of cutting components for cutting section by section are arranged. For example, while the first set of cutting members cuts in the first cutting path, the second set of cutting members cuts in the second path a plurality of sensor tubular shells with their ends re-aligned, thereby further improving cutting efficiency.

And when a plurality of heat flow sensor rudiments with different lengths are required to be cut on the same to-be-cut whole, the whole to-be-cut is cut by the two groups of cutting parts from the same side to the other side all the time, and the distances between the first cutting path and the baffle plate and the second cutting path are different, so that the heat flow sensor rudiments with different lengths are simultaneously cut on the same to-be-cut whole, and the processing efficiency of the heat flow sensor rudiments with two adjacent sections required to be cut and with different lengths is greatly improved.

As shown in fig. 2-5, based on the above method, the present invention further provides an inward-pulling type processing and manufacturing apparatus for a transient heat flow sensor of a coaxial thermocouple, including a driving stretching device 1, a clamp 2 and a driven stretching device 3, which are sequentially arranged at intervals, wherein the driven stretching device 3 is provided with a sensor wire core 4 with a fixed tail end, the clamp 2 is provided with a sensor tubular shell 5 through which the sensor wire core 4 is inserted, and the driving stretching device 1 stretches the sensor wire core 4 through a pulling rope 6 connected to a front end of the sensor wire core 4 and pulls the stretched sensor wire core 4 to pass through the sensor tubular shell 5.

The active stretching device 1 is matched with the traction rope 6 to stretch the sensor wire core 4, the stretched sensor wire core 4 is pulled to penetrate through the sensor tubular shell 5 through the traction rope 6, the conditions that the sensor wire core 4 is broken and blocks the sensor tubular shell 5 in the process of penetrating through the sensor tubular shell 5 are avoided, and the processing difficulty of a coaxial thermocouple transient heat flow sensor (hereinafter referred to as a heat flow sensor) is reduced.

In addition, through the traction of haulage rope 6, be favorable to increasing the length of wearing to establish of sensor silk core 4, solved and be difficult to make sensor silk core 4 pass the longer sensor tubular shell 5's of length problem among the prior art, be favorable to realizing carrying out sensor silk core 4 and wearing to establish the process and combine to carry out the multistage to the sensor tubular shell 5 that is equipped with sensor silk core 4 and cut apart the purpose of processing out a plurality of thermal current sensors to improve thermal current sensor's machining efficiency by a wide margin.

And, combine together with the multistage process of cutting apart, can carry out the cutting intercepting of arbitrary length to wearing the sensor tubulose shell 5 that is equipped with sensor silk core 4 to satisfy the demand in the heat flow sensor of processing different length parameters, be favorable to simplifying production line structure and production procedure.

The clamp 2 is any device or component with the same clamping and fixing functions, such as a chuck, a rotary table and the like.

It should be noted that, the device generally further includes a laser diameter measuring device for detecting the diameter of the sensor wire core 4, and a controller for coordinating the laser diameter measuring device, the active stretching device 1, the clamp 2 and the driven stretching device 3, when the laser diameter measuring device detects that the diameter of the stretched sensor wire core 4 meets the requirement, a signal is fed back to the controller, the controller controls the driven stretching device 3 to release the fixing device for the tail end of the sensor wire core 2, and controls the active stretching device 1 to continue to stretch the stretched sensor wire core 2 through the traction rope 4, so as to realize the penetration of the sensor wire core 2 into the sensor tubular shell 5. The setting of a specific control system is adjusted and set according to actual production requirements, for example, sensing equipment such as a tension sensor is additionally arranged to detect the tension on the traction rope 6 so as to properly adjust the tension of the active stretching device 1, and the sensor wire core 4 is prevented from being broken in the stretching and penetrating processes from the automation control aspect.

In the above embodiment, it is further optimized that the device further includes a stretching platform 7 on which the driving stretching device 1, the clamps 2 and the driven stretching device 3 are mounted, wherein a plurality of the clamps 2 are mounted on the stretching platform 7 in an arrayed manner, and the pulling rope 6 passes through a plurality of the sensor tubular shells 5 corresponding to the clamps 2 one by one in an S shape.

The tail end of the hauling rope 6 penetrates through each sensor tubular shell 5 and then is fixedly connected with the front end of the sensor wire core 4 to be stretched in a welding mode and the like, the plurality of sensor tubular shells 5 are uniformly arranged in the direction of two sides, and on the premise that the lengths of the stretching platform 7 and the growth line are not increased, the active stretching device 1 stretches the sensor wire core 4 through the hauling rope 6 and pulls the stretched sensor wire core 4 to penetrate through the plurality of sensor tubular shells 5, so that the processing efficiency of the heat flow sensor is further improved.

In the above embodiment, it is further optimized that a plurality of guide wheels 8 are rotatably mounted at both ends of the stretching platform 7, the guide wheels 8 at both ends are arranged in a staggered manner in directions of both sides of the stretching platform 7, and extension lines of tube walls of opposite sides of the sensor tubular shell 5 which are close to each other are tangent to outer edges of the corresponding guide wheels 8.

The traction rope 6 and the sensor wire core 4 are guided by the guide wheel 8, so that the condition that the traction rope 6 and the sensor wire core 4 are scraped and rubbed with the end part of the sensor tubular shell 5 when the traction rope 6 and the sensor wire core 4 pass through the adjacent sensor tubular shell 5 to influence the service lives of the traction rope 6 and the sensor wire core 4 is avoided, the conditions that the tension of the active stretching device 1 is uneven, the stretching speed is inconsistent and the like due to the scraping and rubbing of the traction rope 6 and the sensor wire core 4 with the end part of the sensor tubular shell 5 are avoided, the improvement of the precision of controlling the stretching length of the sensor wire core 4 is facilitated, the defect that the sensor wire core 4 is broken due to the uneven pulling force and stretching speed in the process of being stretched and passing through the sensor tubular shell 5 is avoided, and the normal and stable process of the stretching and the passing process of the sensor wire core.

It is further optimized in the above embodiment that one ends of the adjacent sensor tubular shells 5, which face the corresponding guide wheels 8, are close to each other, that is, one end of each adjacent sensor tubular shell 5 is in a V shape with an approximately closed end, on one hand, the length of a single sensor tubular shell 5 is increased while the length of the stretching platform 7 is not increased, and on the other hand, when the ends of the pull rope 6, the sensor wire core 4 and the sensor tubular shell 5 are cut due to an error in the position of the guide wheel 8 or/and the clamp 2, the included angle between the ends of the pull rope 6, the sensor wire core 4 and the sensor tubular shell 5 and the axis of the sensor tubular shell 5 is reduced, that is, the cutting force of the ends of the sensor tubular shell 5 on the pull rope 6 and the sensor wire core 4 is reduced, so as to reduce the negative pulling caused by the error in the position of the guide wheels 8 or/and the clamp 2 on the service life and stability of the pull rope 6 and the sensor wire core 4 The surface effect.

The active stretching device 1 comprises a support seat 101, a push-pull mechanism 102 installed on the support seat 101, and a clamping mechanism 103 installed on the push-pull mechanism 102 and used for clamping and releasing the hauling cable 6, wherein the clamping mechanism 103 is matched with the reciprocating motion of the push-pull mechanism 102 to clamp and release the hauling cable 6 so as to meet the requirement of carrying out traction of any length on the hauling cable 6.

When the pulling rope 6 needs to be pulled, the clamping mechanism 103 is fixedly connected with the pulling rope 6 by clamping the pulling rope 6, and then the push-pull mechanism 102 drives the clamping mechanism 103 connected with the pulling rope 6 in a clamping manner by pushing (the pushing direction is the direction in which the sensor wire core 4 after the pulling rope 6 is to be stretched is inserted into the sensor tubular shell 5) or pulling (the pulling direction is the direction in which the sensor wire core 4 after the pulling rope 6 is to be stretched is inserted into the sensor tubular shell 5) so as to realize the function that the active stretching device 1 stretches the sensor wire core 4 or pulls the sensor wire core 4 to pass through the sensor tubular shell 5. The clamping mechanism 103 releases the pulling rope 6 after one-time pulling is completed, meanwhile, the push-pull mechanism 102 drives the clamping mechanism 103 to reset to prepare for next pulling, and the pulling and pulling are circularly reciprocated, so that the purposes that the pulling rope 6 pulls and pulls the sensor wire core 4 with any length under the matching of the clamping mechanism 103 and the push-pull mechanism 102 are realized, and the theoretical requirement that the sensor wire core 4 with corresponding length is arranged in the sensor tubular shell 5 with any length and number is met.

The push-pull mechanism 102 includes an electric push rod 1021 with one end mounted on the fixed seat and a mounting seat 1022 mounted at the other end of the electric push rod 1021, the clamping mechanism 103 is mounted on the mounting seat 1022, a support rail 9 arranged along the push-pull direction of the electric push rod 1021 is mounted on the stretching platform 7, and a limit chute 10 matched with the support rail 9 is formed in the mounting seat 1022.

The mounting seat 1022 is driven by the electric push rod 1021 to reciprocate along the support guide rail 9, when the electric push rod 1021 is in an extension state and the clamping mechanism 103 clamps the hauling cable 6, the electric push rod 1021 drives the mounting seat 1022 to approach (when the pulling direction of the mounting seat 1022 is the same as the moving direction of the sensor wire core 4 in a penetrating manner) or to separate (when the pushing direction of the mounting seat 1022 is the same as the moving direction of the sensor wire core 4 in a penetrating manner) to realize the traction of the hauling cable 6, on the contrary, after the clamping mechanism 103 releases the hauling cable 6, the electric push rod 1021 drives the mounting seat 1022 to move reversely, so that the clamping mechanism 103 on the mounting seat 1022 is reset to prepare for the next traction.

The limiting sliding groove 10 and the supporting guide rail 9 are used for guiding the mounting seat 1022 and preventing the mounting seat 1022 from deflecting towards two sides of the moving direction through the matching of the supporting guide rail 9 and the fiber sliding groove on one hand, and on the other hand, the mounting seat 1022 is supported through the supporting guide rail 9 on the stretching platform 7, so that the movement stability of the mounting seat 1022 is facilitated, and the service life of the electric push rod 1021 is prolonged.

In the above embodiment, it is further optimized that a gear table 11 located in the extending direction of the support rail 9 is installed on the stretching platform 7, a gear 12 is installed on the gear table 11 in a rotating manner, racks 13 engaged with the gear 12 are installed on both sides of the gear table 11 in a sliding manner, one end of one rack 13 is fixedly connected with the installation seat 1022, the other end of the rack 13 away from the installation seat 1022 is also installed with the clamping mechanism 103, and the two sets of clamping mechanisms 103 cooperate with the push-pull of the electric push rod 1021 to alternately clamp and release the hauling rope 6 so as to continuously draw the hauling rope 6.

When the first clamping mechanism 103 on the mounting seat 1022 clamps the traction rope 6 and pulls the traction rope 6 under the driving of the electric push rod 1021, the first rack 13 corresponding to the first clamping mechanism 103 on the mounting seat 1022 drives the second rack 13 on the other side to move in the opposite direction through the gear 12, and meanwhile, the second clamping mechanism 103 on the second rack 13 is in a state of releasing the traction rope 6. When electric putter 1021 reaches the moment that its stroke is first fixture 103 and second both sides fixture 103 and stops, first fixture 103 releases haulage rope 6 and the second centre gripping presss from both sides haulage rope 6 tightly, thereby when electric putter 1021 resets, make electric putter 1021 stimulate haulage rope 6 once more through the drive of second centre gripping, thereby realize carrying out continuous drawing and drawing in order to reach the purpose of high-efficient production to the sensor silk core 4 of arbitrary length, and cooperate with two sets of reverse motion's fixture 103 that release and press from both sides tight haulage rope 6 in turn, make electric putter 1021 all can carry out the tractive to haulage rope 6 when "extension" and "shorten", thereby reach high-efficient production and energy-conserving purpose.

Wherein, fixture 103 is including installing finger cylinder 1031 on mount pad 1022, finger cylinder 1031 is a pair of all fixed cover is equipped with rubber dactylotheca 1032 on the clamping part, rubber dactylotheca 1032's effect lies in protecting haulage rope 6, causes haulage rope 6 to damage, fracture when avoiding finger cylinder 1031's a pair of clamping part to carry out the centre gripping to haulage rope 6, and the elastic a pair of rubber dactylotheca 1032 that has of rubber material can fully paste and lean on, is favorable to a pair of finger cylinder 1031 to be firm with the 6 centre grippings of haulage rope.

It is further optimized in the above embodiment that a plurality of annular grooves 1033 are respectively formed on the surfaces of the pair of rubber finger cuffs 1032, the plurality of annular grooves 1033 on the pair of rubber finger cuffs 1032 are arranged in a staggered manner, the pair of rubber finger cuffs 1032 are engaged with each other through the annular grooves 1033 to facilitate the traction rope 6 to be firmly clamped, thereby preventing the corresponding clamping mechanism 103 from sliding relative to the traction rope 6 when the traction rope 6 is pulled, avoiding the negative effects on the parameters of the sensor wire core 4, such as the stretching precision, the pipe penetration length (in particular to the length of the sensor wire core 4 connected with the traction rope 6 penetrating into the sensor tubular shell 5 at the tail end) and the like caused by the clamping mechanism 103 incapable of stably and firmly clamping the traction rope 6, this avoids the situation that the sensor wire core 4 has too large a wire diameter after being stretched and the pull string 6 remains in the sensor tubular housing 5.

Wherein, driven stretching device 3 is including installing just be provided with locking mechanical system's unwrapping wire ware 301 on the tensile platform 7, it has to treat tensile to coil on the unwrapping wire ware 301 sensor silk core 4, through having locking function's unwrapping wire ware 301 realize the fixed and sensor silk core 4 intermittent type of tail end to sensor silk core 4, be favorable to realizing carrying out automated processing production to heat flow sensor.

It is further optimized in the above embodiment that the active stretching device 1 further includes a reel 104 installed on the stretching platform 7 and wound with the pulling rope 6, the reel 104 is matched with the two sets of finger cylinders 1031 and the electric push rod 1021 to reel and store the pulling rope 6, that is, when the pulling of the pulling rope 6 is completed by the one set of finger cylinders 1031 under the driving of the electric push rod 1021, the reel 104 tightens the pulling rope 6 by rotating the corresponding angle, so as to ensure that the pulling rope 6 can be continuously pulled under the matching of the electric push rod 1021 and the two sets of finger cylinders 1031, and store the pulling rope 6 is realized, so as to reuse the pulling rope 6.

And, the pulling string 6 is released by the two sets of finger cylinders 1031 after the sensor wire core 4 is completely stretched and pulled by the winder 104 to rapidly pass the sensor wire core 4 through the plurality of sensor tubular cases 5, and at the same time, the thread releaser 301 releases the sensor wire core 4 to be stretched while the stretched sensor wire core 4 passes through the plurality of sensor tubular cases 5, in preparation for the next batch of processing of the heat flow sensor. The machining efficiency of the heat flow sensor is further improved through the matching of the winder 104 and the pay-off 301.

The locking mechanism is used for locking the wire roller of the pay-off device 301 when the sensor wire core is stretched, the locking mechanism locks the wire roller of the pay-off device 301 through any one or combination of a bolt, a lock and the like, for example, a plurality of circumferentially distributed pin holes are formed in the end portion of the wire roller of the pay-off device 301, electromagnets or air cylinders matched with the pin holes are fixedly arranged on the stretching platform 7 or a support of the pay-off device 301, and the wire roller of the pay-off device 301 is locked through an armature or a piston rod inserted into any pin hole.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. An internal pulling type manufacturing method of a coaxial thermocouple transient heat flow sensor is characterized by comprising the following steps:

s100, a traction rope passes through the sensor tubular shell with the hole;

s300, pulling the tail end of the pulling rope to stretch the sensor wire core;

2. The method of claim 1, wherein the step S100 comprises:

3. The method of claim 2, wherein the step S100 further comprises:

4. The method of claim 1, wherein the step S300 comprises:

5. The method of claim 3, further comprising:

in step 100, guiding and assisting traction of the traction rope passing through between the penetrating end of the last sensor tubular shell and the penetrating end of the next sensor tubular shell;

in step 400, the passing pulling rope and sensor wire core are guided and assisted pulled between the penetrating end of the last sensor tubular shell and the penetrating end of the next sensor tubular shell.

6. The method of claim 3, wherein the step S500 comprises:

s502, aligning the end parts of at least one end of a plurality of sensor tubular shells which are arranged side by side;

s503, cutting the sensor tubular shells side by side to form a plurality of heat flow sensor rudiments.

7. The method of claim 6, wherein the step S502 comprises:

8. The method of claim 7, wherein the step S503 comprises:

9. The pull-in fabrication method of a transient heat flow sensor of a coaxial thermocouple according to claim 8, wherein the S5031 comprises adjusting the distance between the cutting path and the barrier plane according to the required length of the prototype of the heat flow sensor before each cutting.

10. The method of claim 8, wherein the whole to be segmented is cut by a plurality of cutting components for performing the segmentation.