阅读说明：本技术 一种三维立体的膨体聚四氟乙烯面部植入体的生产工艺 (Production process of three-dimensional expanded polytetrafluoroethylene facial implant ) 是由 李锦蓓 刘媛 于 2021-08-03 设计创作，主要内容包括：本发明公开了一种三维立体的膨体聚四氟乙烯面部植入体的生产工艺,包括以下步骤；S1、膜状料的制备；S2、裁切；S3、模压成型；S4、脱油；S5、双向拉伸；S6:厚度方向上拉伸；S7、烧结熟化；S8、分切成型。在制备膨体聚四氟乙烯面部植入体的工艺当中,增加了在厚度方向上的拉伸这一步骤；经过三维方向拉伸过的膨体聚四氟乙烯面部植入体内部结构更加立体,具有多维柔韧性；另外还公开了面部植入体加工设备的高温拉伸烘箱,可实现远程自动监控拉伸高度,并且可精确检测吸附夹头的吸盘单元吸附情况,独立控制单个吸盘工作,保证拉升均匀度,避免出现部分位置吸附失效的情况,产品质量更加稳定,实用性更强。(The invention discloses a production process of a three-dimensional expanded polytetrafluoroethylene facial implant, which comprises the following steps; s1, preparing a film material; s2, cutting; s3, compression molding; s4, deoiling; s5, stretching in two directions; s6, stretching in the thickness direction; s7, sintering and curing; and S8, cutting and forming. In the process of preparing the expanded polytetrafluoroethylene facial implant, the step of stretching in the thickness direction is added; the expanded polytetrafluoroethylene facial implant stretched in the three-dimensional direction has a more three-dimensional internal structure and multi-dimensional flexibility; in addition, the high-temperature stretching oven of the facial implant processing equipment is further disclosed, the stretching height can be remotely and automatically monitored, the suction condition of a suction disc unit of the suction chuck can be accurately detected, the work of a single suction disc is independently controlled, the pulling uniformity is guaranteed, the condition that partial position adsorption fails is avoided, the product quality is more stable, and the practicability is higher.)

1. A production process of a three-dimensional expanded polytetrafluoroethylene facial implant is characterized by comprising the following steps: comprises the following steps;

s1, preparing a film material;

s2, cutting the film-shaped material prepared in the step S1 according to the size of a mould pressing die;

s3, laminating the diaphragm cut in the step S2 to a certain thickness, putting the laminated diaphragm into a mould, closing the mould, putting the mould on a mould press for mould pressing composite bonding, wherein the mould pressing parameters are set to be 80-120 ℃, 15-30MPa and 40-100 min;

s4, deoiling the composite membrane in the step S3;

s5, heating the deoiled composite membrane in the S4 (the temperature is set to be 60-280 ℃), and then performing bidirectional stretching and shaping in the length direction and the width direction on a stretching machine, wherein the stretching multiplying power is 1.5-4 times;

s6, heating the biaxially oriented composite layer membrane in a high-temperature stretching oven (the temperature is set to be 50-200 ℃), and stretching the membrane along the thickness direction of the composite layer membrane with the stretching ratio of 1-5 times;

s7, placing the composite membrane stretched in the step S6 into an oven for high-temperature sintering, taking out the composite membrane from the oven for cooling, and cooling and removing the mold to obtain an expanded polytetrafluoroethylene sheet;

and S8, finally, cutting and carving the prepared expanded polytetrafluoroethylene sheet.

2. The process for producing a three-dimensional expanded polytetrafluoroethylene facial implant according to claim 1, wherein: the preparation of the membrane material in the S1 comprises the following steps;

a. mixing raw materials: adding a small amount of solvent oil into a certain amount of expanded polytetrafluoroethylene dispersion resin, and uniformly stirring, wherein the mass ratio of the expanded polytetrafluoroethylene to the solvent oil is 3: 1;

b. pre-pressing to form a blank: placing the mixed raw materials into a cylindrical mold, setting the pressure of a prepress to be 10-20bar and the pressure maintaining time to be 5-10min, slowly increasing the pressure to compact the materials, keeping the pressure value for 5-10min after the pressure value is reached, slowly releasing the pressure, and demolding to obtain a cylindrical blank;

c. extrusion by pushing: pushing and pressing the obtained blank material to obtain a thin cylindrical bar material;

d. and (3) putting the bar stock into a double-roller calender to be calendered into a film and rolled.

3. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 2, wherein the process comprises the following steps: the roll spacing of the double rollers in the step d is controlled within the range of 1 +/-0.2 mm.

4. The process for producing a three-dimensional expanded polytetrafluoroethylene facial implant according to claim 1, wherein: the high-temperature stretching oven (1) in the steps S6 and S7 comprises a high-temperature oven (110), a stretching assembly (120) arranged inside the high-temperature oven (110) and a stretching height identification assembly (130) arranged on the inner wall of the high-temperature oven (110);

the stretching assembly (120) comprises a vacuum adsorption lower chuck (1210) arranged at the bottom end of the high-temperature oven (110), a vacuum adsorption upper chuck (1220) oppositely arranged above the vacuum adsorption lower chuck (1210) and driven to lift through a hydraulic rod, a probe pressure sensing assembly (1230) arranged in a sucker unit (2) of the vacuum adsorption upper chuck (1220), a driving mechanism (1240) arranged on the vacuum adsorption upper chuck (1220) and used for driving a single sucker unit (2) to lift, and an electromagnetic clamping jaw (1250) arranged on a supporting frame (3) of the vacuum adsorption upper chuck (1220) and used for clamping and locking the sucker unit (2), wherein the probe pressure sensing assembly (1230) is electrically connected with a power part of the driving mechanism (1240) through a controller;

the vacuum adsorption upper chuck (1220) is characterized in that a sucker unit (2) is arranged in an open groove (6) formed in the support frame (3) in a sliding mode, and the vacuum adsorption upper chuck (1220) and the sucker unit (2) of the vacuum adsorption lower chuck (1210) are connected with a negative pressure generating mechanism through hoses.

5. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 4, wherein the process comprises the following steps: the driving mechanism (1240) comprises a driving motor (1241) which is relatively and fixedly arranged on the side face of the support frame (3) of the vacuum adsorption upper chuck (1220), a guide groove (1244) which is arranged on the support frame (3), a one-way reciprocating screw rod component (1242) which is rotatably arranged in the guide groove (1244), and a gear component (1243) which is rotatably arranged on a movable nut of the one-way reciprocating screw rod component (1242) in a coaxial and fixed mode, wherein a transmission gear (8) which can be in tooth connection with the gear component (1243) is arranged at the rod part of the sucker unit (2) of the vacuum adsorption upper chuck (1220) along the length direction.

6. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 5, wherein the process comprises the following steps: the probe pressure sensing assembly (1230) is fixedly provided with mounting rods (4) all around, the other end of each mounting rod (4) is fixedly connected with the inner wall of the sucker unit (2), and the working surface of the sucker unit (2) is flush with the end part of the probe pressure sensing assembly (1230).

7. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 4, wherein the process comprises the following steps: the stretching height identification assembly (130) comprises an RFID label (1310) attached to the inner wall of the high-temperature oven and parallel metal plates (1320) connected with the RFID label (1310) in a contact mode and arranged on the inner wall of the high-temperature oven (110) from top to bottom, and an RFID label (1310) reader is arranged on the outer side of the high-temperature oven (110).

8. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 5, wherein the process comprises the following steps: the support frame (3) is fixedly connected with a movable rod (9) arranged right above through a connecting rod, a support rod (10) with one end fixedly connected with a hydraulic cylinder is arranged at the bottom of the high-temperature oven (110) in a sliding mode, the support rod (10) is elastically connected with the movable rod (9), and a micro vibration motor (12) is arranged on the support frame (3).

9. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 8, wherein the process comprises the following steps: and heat insulation covers (5) are arranged on the outer sides of the micro vibration motor (12) and the driving motor (1241).

10. The process for producing the three-dimensional expanded polytetrafluoroethylene facial implant according to claim 8, wherein the process comprises the following steps: the movable rod (9) is inserted into the support rod (10), and a compression spring (11) is arranged between the end part of the movable rod (9) and the support rod (10) in a pressing mode.

Technical Field

The invention belongs to the technical field of implant processing, and particularly relates to a production process of a three-dimensional expanded polytetrafluoroethylene facial implant.

Background

Polytetrafluoroethylene, commonly known as "plastic king", is a high molecular polymer prepared by polymerization using tetrafluoroethylene as a monomer. The white wax-like paint has the advantages of good translucence, heat resistance and cold resistance, and can be used for a long time at-180-260 ℃. The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, and the friction coefficient of the polytetrafluoroethylene is extremely low. With the development of material technology, according to the characteristics of polytetrafluoroethylene, the polytetrafluoroethylene can be used as a good plastic facial implant through the adjustment of a processing technology.

The expanded polytetrafluoroethylene facial implant prepared by the prior art only has a reticular structure with fiber forming and pore forming in the plane direction on the internal structure, and almost no trace of the fiber filaments which are pulled apart into the reticular structure in the thickness direction. The deflection and the rebound rate in the thickness direction are low, and the face is easy to be stiff and is not soft and flexible after being implanted into a human body.

Disclosure of Invention

The invention aims to provide a production process for a three-dimensional expanded polytetrafluoroethylene facial implant, which is used for solving the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a production process of a three-dimensional expanded polytetrafluoroethylene facial implant comprises the following steps;

s1, preparing a film material;

s2, cutting the film-shaped material prepared in the step S1 according to the size of a mould pressing die;

s3, laminating the diaphragm cut in the step S2 to a certain thickness, putting the laminated diaphragm into a mould, closing the mould, putting the mould on a mould press for mould pressing composite bonding, wherein the mould pressing parameters are set to be 80-120 ℃, 15-30MPa and 40-100 min;

s4, deoiling the composite membrane in the step S3;

s5, heating the deoiled composite membrane in the S4 (the temperature is set to be 60-280 ℃), and then performing bidirectional stretching and shaping in the length direction and the width direction on a stretching machine, wherein the stretching multiplying power is 1.5-4 times;

s6, heating the biaxially oriented composite layer membrane in a high-temperature stretching oven (the temperature is set to be 50-200 ℃), and stretching the membrane along the thickness direction of the composite layer membrane with the stretching ratio of 1-5 times;

s7, placing the composite membrane stretched in the step S6 into an oven for high-temperature sintering, taking out the composite membrane from the oven for cooling, and cooling and removing the mold to obtain an expanded polytetrafluoroethylene sheet;

and S8, finally, cutting and carving the prepared expanded polytetrafluoroethylene sheet.

Preferably, the preparation of the membrane material in S1 comprises the following steps;

a. mixing raw materials: adding a small amount of solvent oil into a certain amount of expanded polytetrafluoroethylene dispersion resin, and uniformly stirring, wherein the mass ratio of the expanded polytetrafluoroethylene to the solvent oil is 3: 1;

b. pre-pressing to form a blank: placing the mixed raw materials into a cylindrical mold, setting the pressure of a prepress to be 10-20bar and the pressure maintaining time to be 5-10min, slowly increasing the pressure to compact the materials, keeping the pressure value for 5-10min after the pressure value is reached, slowly releasing the pressure, and demolding to obtain a cylindrical blank;

c. extrusion by pushing: pushing and pressing the obtained blank material to obtain a thin cylindrical bar material;

d. and (3) putting the bar stock into a double-roller calender to be calendered into a film and rolled.

Preferably, the roll spacing of the double rollers in the step d is controlled within the range of 1 +/-0.2 mm.

Preferably, the high-temperature stretching oven in the steps S6 and S7 includes a high-temperature oven, a stretching assembly disposed inside the high-temperature oven, and a stretching height identifying assembly disposed on an inner wall of the high-temperature oven;

the stretching assembly comprises a vacuum adsorption lower chuck arranged at the bottom end of the high-temperature oven, a vacuum adsorption upper chuck arranged above the vacuum adsorption lower chuck relatively and driven to lift through a hydraulic rod, a probe pressure sensing assembly arranged in a sucker unit of the vacuum adsorption upper chuck, a driving mechanism arranged on the vacuum adsorption upper chuck and used for driving a single sucker unit to lift, and an electromagnetic clamping jaw arranged on a support frame of the vacuum adsorption upper chuck and used for clamping and locking the sucker unit, wherein the probe pressure sensing assembly is electrically connected with a power part of the driving mechanism through a controller;

the vacuum adsorption upper chuck and the vacuum adsorption lower chuck are connected with a negative pressure generating mechanism through hoses.

Preferably, the driving mechanism comprises a driving motor which is relatively and fixedly arranged on the side face of the support frame of the vacuum adsorption upper chuck, a guide groove which is formed in the support frame, a one-way reciprocating screw rod assembly which is rotatably arranged in the guide groove, and a gear piece which is rotatably arranged on a movable nut of the one-way reciprocating screw rod assembly in a coaxial and fixed mode, and the sucker unit rod part of the vacuum adsorption upper chuck is provided with a transmission gear which can be in gear connection with the gear piece along the length direction.

Preferably, the probe pressure sensing assembly is fixedly provided with mounting rods all around, the other end of each mounting rod is fixedly connected with the inner wall of the sucker unit, and the working surface of each sucker unit is flush with the end part of the probe pressure sensing assembly.

Preferably, the stretching height identification assembly comprises an RFID tag attached to the inner wall of the high-temperature oven and parallel metal plates connected with the RFID tag contact and arranged on the inner wall of the high-temperature oven from top to bottom, and an RFID tag reader is arranged on the outer side of the high-temperature oven.

Preferably, the support frame passes through the connecting rod and sets up the movable rod fixed connection directly over, the bottom of high temperature oven slides and is provided with one end and pneumatic cylinder fixed connection's bracing piece, bracing piece and movable rod elastic connection, and be provided with miniature shock dynamo on the support frame.

Preferably, the outer sides of the micro vibration motor and the driving motor are both provided with heat shields.

Preferably, the movable rod is inserted into the support rod, and a compression spring is arranged between the end of the movable rod and the support rod in a pressing manner.

The invention has the technical effects and advantages that: the production process and the processing equipment of the three-dimensional expanded polytetrafluoroethylene facial implant,

1. after the expanded polytetrafluoroethylene facial implant is stretched in the thickness direction, the length of the nodular fiber filaments on the side surface of the expanded polytetrafluoroethylene facial implant is lengthened, the diameter of the internal air holes is enlarged, and the expanded polytetrafluoroethylene facial implant has excellent biocompatibility and is beneficial to growth of cell tissues. The expanded polytetrafluoroethylene facial implant stretched in the thickness direction has the advantages that the extending lengths of the fiber yarns on the inner nodes of the implant in all directions are uniform, and the internal mesh structure of the product is more three-dimensional. The surface of the expanded polytetrafluoroethylene facial implant with the three-dimensional structure is smoother after processing and forming.

2. Can realize the real time monitoring to the sucking disc unit condition of adsorbing through this equipment, after individual sucking disc unit drops, can drive the motion alone and adsorb the operation from newly accomplishing, avoid appearing the tensile inhomogeneous condition that individual sucking disc unit breaks away from the cause, guarantee product quality, the practicality is stronger.

3. When the driving mechanism works, the screw rod part of the one-way reciprocating screw rod assembly rotates clockwise, so that the movable nut is driven to move along the direction of the guide rail, after the movable nut reaches a designated position, the screw rod part deflects reversely, at the moment, due to the characteristic of the one-way reciprocating screw rod, the gear and the screw rod are in a relatively fixed state, so that the gear is driven to rotate, the gear is in tooth joint with the rod part of the sucker unit, the sucker unit is pushed to adsorb newly, the structure is simpler, the size of the whole mechanism is reduced, and the practicability is stronger.

4. Form an electric capacity through parallel technology board and high temperature oven inner space, high temperature oven inner space constitutes the middle medium of this electric capacity, when the RFID label reads the ware and sends magnetic field, the RFID label produces induced-current and carries the electric current to this electric capacity, it changes to cause middle medium at the process of drawing high, thereby electric capacity also changes, after detecting electric capacity and reacing the settlement threshold value, it reaches the standard to show to draw high range, stop drawing high work immediately through the controller this moment, but real time monitoring draws high the condition, need not to compare the scale, control is more accurate, need not the unpacking observation, the practicality is stronger.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a schematic structural view of the processing apparatus of the present invention (with the door removed);

FIG. 3 is a schematic view of the mounting structure of the tension height identifying assembly;

FIG. 4 is a schematic diagram of a driving structure;

FIG. 5 is a schematic structural view of a suction cup unit;

fig. 6 is a schematic view showing the connection of the support bar and the movable bar.

In the figure: 1. stretching the oven at a high temperature; 110. a high-temperature oven; 120. a stretching assembly; 130. a stretch height identification component;

1210. vacuum adsorption lower chuck; 1220. vacuum adsorption upper clamping heads; 1230. a probe pressure sensing assembly; 1240. a drive mechanism; 1250. an electromagnetic clamping jaw;

1241. a drive motor; 1242. a one-way reciprocating screw rod assembly; 1243. a gear member; 1244. a guide groove;

1310. an RFID tag; 1320. parallel metal plates;

2. a suction cup unit; 3. a support frame; 4. mounting a rod; 5. a heat shield; 6. an open slot; 7. an RFID tag reader; 8. a transmission gear; 9. a movable rod; 10. a support bar; 11. a compression spring; 12. a miniature vibration motor.

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.

The invention provides a production process of a three-dimensional expanded polytetrafluoroethylene facial implant as shown in figure 1, which comprises the following steps;

s1, preparing a film material;

s2, cutting the film-shaped material prepared in the step S1 according to the size of a mould pressing die;

s3, laminating the diaphragm cut in the step S2 to a certain thickness, putting the laminated diaphragm into a mould, closing the mould, putting the mould on a mould press for mould pressing composite bonding, wherein the mould pressing parameters are set to be 80-120 ℃, 15-30MPa and 40-100 min;

s4, deoiling the composite membrane in the step S3;

s5, heating the deoiled composite membrane in the S4 (the temperature is set to be 60-280 ℃), and then performing bidirectional stretching and shaping in the length direction and the width direction on a stretching machine, wherein the stretching multiplying power is 1.5-4 times;

s6, heating the biaxially oriented composite layer membrane in a high-temperature stretching oven (the temperature is set to be 50-200 ℃), and stretching the membrane along the thickness direction of the composite layer membrane with the stretching ratio of 1-5 times;

s7, placing the composite membrane stretched in the step S6 into an oven for high-temperature sintering, taking out the composite membrane from the oven for cooling, and cooling and removing the mold to obtain an expanded polytetrafluoroethylene sheet;

and S8, finally, cutting and carving the prepared expanded polytetrafluoroethylene sheet.

After the expanded polytetrafluoroethylene facial implant is stretched in the thickness direction, the length of the nodular filaments on the side face of the expanded polytetrafluoroethylene facial implant is lengthened, the diameter of the internal air holes is increased, and the expanded polytetrafluoroethylene facial implant has excellent biocompatibility and is beneficial to growth of cell tissues.

And the expanded polytetrafluoroethylene facial implant stretched in the thickness direction has uniform extending length of the fiber filaments on the inner nodes in all directions, and the internal mesh structure of the product is more three-dimensional. Meanwhile, the surface of the expanded polytetrafluoroethylene facial implant with the three-dimensional structure is smoother after processing and forming.

The molded expanded polytetrafluoroethylene facial implant presents a more three-dimensional fiber-forming pore-forming structure on the microstructure. The specific expression is that the prepared expanded polytetrafluoroethylene facial implant can have good fiber mesh structures on the surface, inside and side surfaces, so that the prepared facial implant can have better biocompatibility, is beneficial to the growth of human tissue cells in the facial implant, can show multidimensional flexibility while being not easy to displace and deform, and enables the face of an operator to be more three-dimensional and soft without stiffness.

The preparation of the membrane material in the S1 comprises the following steps;

a. mixing raw materials: adding a small amount of solvent oil into a certain amount of expanded polytetrafluoroethylene dispersion resin, and uniformly stirring, wherein the mass ratio of the expanded polytetrafluoroethylene to the solvent oil is 3: 1;

b. pre-pressing to form a blank: placing the mixed raw materials into a cylindrical mold, setting the pressure of a prepress to be 10-20bar and the pressure maintaining time to be 5-10min, slowly increasing the pressure to compact the materials, keeping the pressure value for 5-10min after the pressure value is reached, slowly releasing the pressure, and demolding to obtain a cylindrical blank;

c. extrusion by pushing: pushing and pressing the obtained blank material to obtain a thin cylindrical bar material;

d. and (3) putting the bar stock into a double-roller calender to be calendered into a film and rolled.

Through the steps, the processing of the blank is refined, and the product quality is further ensured.

The roll spacing of the double rollers in the step d is controlled within the range of 1 +/-0.2 mm. The thickness of the rolled diaphragm is about 1mm, and the subsequent tabletting of the composite film is facilitated.

As also shown in fig. 2 to 6, the high temperature stretching oven 1 in the steps S6 and S7 includes a high temperature oven 110, a stretching assembly 120 disposed inside the high temperature oven 110, and a stretching height identifying assembly 130 disposed on an inner wall of the high temperature oven 110;

the stretching assembly 120 comprises a vacuum adsorption lower chuck 1210 arranged at the bottom end of the high-temperature oven 110, a vacuum adsorption upper chuck 1220 arranged above the vacuum adsorption lower chuck 1210 and driven to lift through a hydraulic rod, a probe pressure sensing assembly 1230 arranged in a sucker unit 2 of the vacuum adsorption upper chuck 1220, a driving mechanism 1240 arranged on the vacuum adsorption upper chuck 1220 and used for driving a single sucker unit 2 to lift, and an electromagnetic clamping jaw 1250 arranged on a support frame 3 of the vacuum adsorption upper chuck 1220 and used for clamping and locking the sucker unit 2, wherein the probe pressure sensing assembly 1230 is electrically connected with a power part of the driving mechanism 1240 through a controller;

the sucking disc unit 2 of the vacuum adsorption upper chuck 1220 is arranged in an open slot 6 formed in the support frame 3 in a sliding manner, and the sucking disc units 2 of the vacuum adsorption upper chuck 1220 and the vacuum adsorption lower chuck 1210 are connected with a negative pressure generating mechanism through hoses.

When the implant is processed, the composite membrane after being shaped by two-way stretching in length and width directions needs to be placed into a high-temperature stretching oven 1, the composite membrane is placed into a vacuum adsorption lower chuck 1210 in the high-temperature oven 110, meanwhile, a hydraulic cylinder drives the vacuum adsorption upper chuck 1220 to descend, so that a sucker unit 2 of the vacuum adsorption upper chuck 1220 is in contact with a unit of the composite membrane, a negative pressure generating mechanism is started, negative pressure is generated at the positions of the vacuum adsorption upper chuck 1220 and the sucker unit 2 of the vacuum adsorption lower chuck 1210 to adsorb the composite membrane, at the moment, a pressure signal generated by extrusion is received by a probe pressure sensing assembly 1230, at the moment, high temperature is generated by the high-temperature oven 110 to heat the composite membrane at high temperature, meanwhile, the vacuum adsorption upper chuck 1220 pulls the upper surface of the composite membrane to rise, the thickness is pulled to rise, and when a certain sucker unit 2 is separated in the pulling process, at the moment, the instantaneous pressure of the probe pressure sensing assembly 1230 disappears, the driving mechanism 1240 is started to move to the corresponding sucker unit 2, the electromagnetic clamping jaw 1250 is electrified to loosen the sucker unit 2, the sucker unit 2 is driven to descend through the driving mechanism 1240, the suction is carried out from the surface of the newly contacted composite membrane, and after the suction is successful, the sucker unit 2 is pushed to reset, so that the condition of uneven stretching caused by the separation of individual sucker units 2 is avoided, the product quality is ensured, and the practicability is stronger;

meanwhile, the pulling height identification assembly is used for quickly and accurately detecting the pulling amplitude, so that the thickness is guaranteed to be pulled in place.

The driving mechanism 1240 comprises a driving motor 1241 relatively fixedly arranged on the side of the support frame 3 of the vacuum adsorption upper chuck 1220, a guide slot 1244 arranged on the support frame 3, a one-way reciprocating screw rod assembly 1242 rotatably arranged in the guide slot 1244, and a gear member 1243 rotatably arranged on a movable nut of the one-way reciprocating screw rod assembly 1242 in a coaxial and fixed manner, and a driving gear 8 capable of being in toothed connection with the gear member 1243 is arranged at the rod part of the suction cup unit 2 of the vacuum adsorption upper chuck 1220 along the length direction. When actuating mechanism 1240 during operation, lead screw portion through one-way reciprocal lead screw subassembly 1242 clockwise rotates to drive movable nut along the motion of guide rail direction, after reacing the assigned position, lead screw portion reverse deflection, this moment because the characteristic of one-way reciprocal lead screw, gear and lead screw relatively fixed state, thereby drive gear revolve, gear and 2 pole portion tooth joint of sucking disc unit this moment, thereby promote sucking disc unit 2 and will follow new absorption down, the structure is simpler, thereby the volume of whole mechanism has been reduced, the practicality is stronger.

The probe pressure sensing assembly 1230 is fixedly provided with mounting rods 4 all around, the other ends of the mounting rods 4 are fixedly connected with the inner wall of the sucker unit 2, and the working surface of the sucker unit 2 is flush with the end part of the probe pressure sensing assembly 1230. After the sucker unit 2 is successfully sucked, the pressure signal generated by the probe pressure sensing assembly 1230 can be immediately extruded, so that the detection accuracy is ensured, and the probe pressure sensing assembly 1230 is prevented from influencing the normal operation of the sucker unit 2.

The stretching height identifying assembly 130 comprises an RFID tag 1310 attached to the inner wall of the high temperature oven 110 and a parallel metal plate 1320 connected with the RFID tag 1310 in a contact manner and arranged on the inner wall of the high temperature oven 110 from top to bottom, wherein an RFID tag 1310 reader is arranged on the outer side of the high temperature oven 110.

A capacitive sensor is a capacitor with variable parameters. The capacitance of a plate capacitor formed by two parallel metal plates separated by an insulating medium is related to the vacuum dielectric constant e0(8,854x10-1F/m), the relative dielectric constant of the interplate medium, the effective area of the interplate medium, the er plate, and the distance between the two plates, d, when the edge effect is neglected

D-distance between two parallel polar plates:

a- -area of coverage of two parallel plates facing each other

Relative dielectric constant of er-dielectric material

e0- -vacuum dielectric constant;

c- -capacitance.

When any one of d, A or three parameters in the above formula is measured to change, the capacitance is changed, and the change can be converted into electric quantity output through the measuring circuit. Therefore, the capacitive sensor can be classified into a variable-pole-pitch type, a variable-area type, and a variable-dielectric type.

First, form an electric capacity through parallel technology board and high temperature oven 110 inner space, high temperature oven 110 inner space constitutes the middle medium of this electric capacity, when RFID tag 1310 reads the ware and sends the magnetic field, RFID tag 1310 produces induced current and to this electric capacity carry electric current, it changes to cause middle medium to take place in the process of drawing high, thereby electric capacity also changes early, after detecting electric capacity and reacing the settlement threshold value, show that the range of drawing high reaches the standard, stop drawing high work immediately through the controller this moment, but real time monitoring draws high the condition, need not to compare the scale, control is more accurate, need not to unpack and observe, the practicality is stronger.

Inside movable rod 9 inserted bracing piece 10, and the pressure was held between movable rod 9 tip and the bracing piece 10 and is provided with compression spring 11 support frame 3 passes through the connecting rod and sets up the movable rod 9 fixed connection directly over, the bottom of high temperature oven 110 slides and is provided with one end and pneumatic cylinder fixed connection's bracing piece 10, bracing piece 10 and movable rod 9 elastic connection, and be provided with miniature shock dynamo 12 on the support frame 3. The micro vibration motor 12 is started to work for 3-5 seconds after the micro vibration motor is pulled up for a certain distance at each time, the pulling-up effect is guaranteed, the phenomenon that the sucking disc unit 2 is overlarge in stress and drops due to continuous pulling-up is avoided, and after vibration is increased, the expanded polytetrafluoroethylene facial implant can be further strengthened to form a fiber net-shaped structure.

The outer sides of the micro vibration motor 12 and the driving motor 1241 are provided with heat shields 5, so that the normal work of each component is ensured, and the service life is ensured.