An automatic metering PEEK production system and production process

Abstract

The invention discloses an automatic metering PEEK production system and production process, which relate to the field of injection molding metering structures, including a barrel, a plunger and a mold. A reflux pipe is arranged at one end of the barrel near the mold, a gate plate and a status light are arranged in the reflux pipe, a U-shaped rod is fixed at the end of the plunger, the U-shaped rod is connected to a measuring ruler to display the advance distance, the reflux pipe is communicated with the mold, and the reflux pipe is closed by a gate plate pressed by a first spring. Only after the mold is filled with materials can the materials enter the reflux pipe to push the gate plate, and the injection progress of the mold is monitored by deflecting the gate plate; in addition, the plunger end is connected to the U-shaped rod to monitor the advance distance of the plunger, and the U-shaped rod fixed to the plunger end will not affect the monitoring accuracy due to the wear or deformation of the plunger. In addition, the monitoring display unit is outside the barrel and is not easily affected by the wear of the movable structure. Then an amplification component is arranged to amplify the advance distance of the plunger and display it, so that the actual advance distance of the plunger can be displayed more accurately.

Description

Technical Field

[0001] The invention relates to an automatic metering production system, in particular to an automatic metering PEEK production system and a production process. Background Art

[0002] Polyetheretherketone (PEEK) is a high-performance special polymer material with physical and chemical properties such as high temperature resistance and chemical corrosion resistance. This material has a large number of applications in the aerospace field, medical device field (as artificial bone to repair bone defects) and industrial field.

[0003] The molding methods of PEEK materials in the prior art include injection molding, extrusion molding, compression molding, blow molding, melt spinning, rotational molding, powder spraying and other processing methods. Due to the high cost of materials, the control of production defective rate is particularly important. However, due to the wear of the plunger caused by the use of the existing injection molding equipment, the mold connection error and other factors, it is easy to have errors in the judgment of the injection amount of the molten material, thereby increasing the production defective rate.

[0004] In response to the above-mentioned problems, technicians in this field have proposed an automatic metering PEEK production system and production process, which reduces material loss caused by mold installation errors and plunger wear and deformation by structurally improving existing injection molding equipment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic metering PEEK production system and production process, in which a reflux pipe connected to the mold is arranged at one end of the barrel close to the mold, and after the mold is filled with material, the material enters the reflux pipe to push the gate plate to deflect, and the injection status of the mold is displayed by turning on the status light of the gate plate. In addition, a measuring ruler and an indicator needle are connected at the end of the plunger by a U-shaped rod, so that injection errors caused by wear and deformation of the plunger are not likely to occur, and the injection volume of the material is accurately displayed, which is beneficial to reducing the defective rate of injection products.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic metering PEEK production system, including a barrel, a plunger and a mold, a plunger is arranged on the inner side of the barrel, and a mold is installed on the end of the barrel. The plunger in the barrel is advanced to inject the material in the barrel into the mold for molding production.

[0007] A reflux pipe is provided at one end of the barrel close to the mold. After the mold is filled with material, the material enters the reflux pipe under the pressure of continued injection, thereby judging the completion progress of the injection in the mold.

[0008] A gate plate is arranged on the inner side of the open end of the reflux pipe, and the gate plate blocks the reflux pipe. After the material enters the reflux pipe, a squeezing and pushing action is exerted on the gate plate to cause the material to deflect at an angle.

[0009] A status light is electrically arranged on one side of the gate plate. The deflection of the gate plate connects the circuit of the status light, and the status light turns on, indicating that the injection in the mold is completed.

[0010] A U-shaped rod is fixedly connected to the side of the plunger end, and the U-shaped rod fixed to the plunger end moves synchronously with the piston at the top of the plunger, so that the wear or deformation of the plunger will not affect the injection accuracy of the equipment.

[0011] A measuring ruler is fixedly provided on the outside of the barrel, and an indicator needle is provided on the side of the measuring ruler corresponding to the U-shaped rod. The U-shaped rod pushes the indicator needle to move as the plunger advances. The U-shaped rod intuitively reflects the moving distance of the indicator needle along the measuring ruler, so that the injection of PEEK is accurately measured.

[0012] Preferably, an air pump is connected to one end of the reflux pipe away from the mold, and vacuum suction is created in the reflux pipe by the air pump. After the injection molding of one of the molds is completed, the material in the reflux pipe is emptied to prevent the material from cooling and solidifying and clogging the reflux pipe.

[0013] A guide baffle is hingedly provided on the inner side of the reflux pipe corresponding to the air pump. After the air pump creates vacuum suction in the reflux pipe, the material moves along the reflux pipe, creating a squeezing and pushing effect on the hinged guide baffle to deflect it, automatically blocking the passage leading to the air pump to prevent the material from being sucked into the air pump and causing damage to the equipment.

[0014] Preferably, an arc block is fixed on the side of the gate away from the mold, and the arc block can move in a circular manner as the gate angle deflects, thereby conveniently maintaining the air tightness of the reflux pipe and facilitating the installation of a reset structure for the arc block.

[0015] The end of the arc block away from the gate plate passes through the side wall of the reflux pipe and is tightly pressed against a first spring. The first spring applies a thrust to the gate plate through the arc block to help the gate plate close the reflux pipe, thereby preventing materials from entering the reflux pipe in a normal injection state and affecting the monitoring accuracy of the monitoring equipment.

[0016] Preferably, the first spring is fixedly connected to a first slider at one end away from the arc block, and the first slider is slidably connected to the barrel. By adjusting the installation position of the first slider, the elastic force applied by the first spring to the gate plate is changed, thereby ensuring that the gate plate has a better sealing effect on the reflux pipe and also ensuring that the material in the mold can enter the reflux pipe and push the gate plate to deflect after the injection molding is completed.

[0017] Positioning pins are inserted on both sides of the first slider, and the first slider is positioned at the installation position inside the barrel through the positioning pins. The positioning pins are symmetrically arranged on two opposite sides of the first slider to ensure stable positioning of the first slider.

[0018] Preferably, a rubber pad is fixed to one end of the positioning pin extending out of the first slider, and the positioning pin increases the friction between the slider and the rubber pad, thereby ensuring a better positioning effect and preventing the first slider from sliding under the action of the first spring elastic force to affect the size of the elastic force applied to the gate plate.

[0019] A rack is arranged on the side of the other end of the positioning pin, and a control knob is arranged on the side of the first sliding block to engage the two racks and insert them. The rack at one end of the positioning pin can be conveniently controlled to extend and retract the positioning pin through the control knob.

[0020] A second spring is provided on the side of the positioning pin to press against the sleeve, and a pressing force is applied to the positioning pin by the second spring to ensure that the positioning pin presses against the side wall of the barrel to position and install the slide block.

[0021] Preferably, the inner side of the first slider is tightly against the rack and an advancement rod is provided corresponding to the advancement of the second spring, and the advancement adjustment of the advancement rod is realized to adjust the elastic force of the second spring on the positioning rod, thereby ensuring the positioning effect of the positioning rod on the first slider.

[0022] The first slider side engages with the advancement rod and is provided with a tightening knob for rotation. When the elastic coefficient of the second spring is weakened, the advancement rod is driven to advance by rotating the tightening knob. The advancing advancement rod changes the tightening position of the second spring, thereby changing the elastic force applied by the second spring to the positioning rod.

[0023] Preferably, the outer wall of the barrel is fixedly connected to an anti-interference box, the measuring scale is fixed on the inner side of the anti-interference box, the U-shaped rod extends into the inner side through the bottom of the anti-interference box and is slidably connected thereto, and the anti-interference box protects the measuring scale to prevent external forces from causing changes in the accuracy of the U-shaped rod and the measuring scale inside thereof.

[0024] An amplifying component is arranged on the side of the measuring ruler, and the indicating needle is slidably arranged on the side of the measuring ruler through the amplifying component. The amplifying component can amplify the advancement distance of the U-shaped rod, thereby realizing more accurate monitoring of the advancement distance of the plunger.

[0025] Preferably, the amplification assembly includes a shift block, which is slidably arranged on the side of the measuring scale in parallel with the advancement direction of the U-shaped rod. The U-shaped rod advances synchronously with the plunger, and the U-shaped rod pushes the shift block to advance along the extension direction of the measuring scale. The shift block drives the indicator needle slidably arranged on the side of the measuring scale to display the advancement.

[0026] A second slider is slidably arranged inside the measuring ruler, and the indicator needle is fixedly connected to the side of the second slider. After the second slider is driven by the shift block, the indicator needle moves along with the second slider to display the moving distance of the plunger.

[0027] An amplifying gear is arranged on the inner side of the measuring ruler, and the shift block and the second slider are meshed and driven by the amplifying gear. After the transmission of the amplifying gear, the advancement distance of the U-shaped rod is amplified by multiples to become the actual advancement distance of the indicating needle, thereby being able to more accurately obtain the advancement distance of the plunger.

[0028] Preferably, a sliding groove is provided on the side of the measuring ruler parallel to the advancement direction of the U-shaped rod, and a roller is provided on the inner side of the shift block through a spring, and the shift block is slidably arranged on the inner side of the sliding groove through the roller, and the U-shaped rod pushes the shift block to move along the sliding groove as the plunger advances, and the roller pressed by the spring presses against the side sliding groove of the measuring ruler, so that the advancement of the shift block is smoother to avoid jamming and damage to the accuracy of the precision indicating structure.

[0029] A third spring is fixed to the side of the second slider away from the advancing end, and the third spring quickly resets after the second slider loses the engagement driving effect of the shifting block.

[0030] An automatic metering PEEK production process, based on the automatic metering PEEK production system described above, the production metering process is as follows:

[0031] S1. As the plunger in the barrel is injected, the material in the barrel enters the mold. After the mold is filled with material, the material enters the reflux pipe under the action of injection pressure;

[0032] S2, the material entering the reflux pipe contacts and pushes the gate, the gate deflects and connects the circuit of the status light, the status light turns on, and the injection status of the mold is fed back;

[0033] S3, as the plunger is injected into the barrel, the U-shaped rod fixed to the end of the plunger pushes the indicator needle on the side of the measuring ruler to move forward. The U-shaped rod is fixed to the end of the plunger, and the monitoring accuracy will not be affected by the wear or deformation of the plunger;

[0034] In addition, the U-shaped rod pushes the shift block to move along the slide groove, and the shift block drives the second slider by engaging with the amplifying gear. The movement of the second slider displays the movement distance of the U-shaped rod through the indicator needle fixed thereto, and the injection accuracy is more accurately monitored and displayed by amplifying the movement distance.

[0035] The present invention discloses an automatic metering PEEK production system and production process, which have the following beneficial effects:

[0036] 1. The automatic metering PEEK production system and production process are provided with a reflux pipe connected to the mold at one end of the barrel close to the mold, and closed by a gate pressed by a first spring. Only when the mold is filled with materials can the materials enter the reflux pipe to push the gate, and the injection progress of the mold is monitored by the deflection of the gate; in addition, the plunger end is connected by a U-shaped rod to monitor the advance distance of the plunger, and the U-shaped rod fixed to the plunger end will not affect the monitoring accuracy due to the wear or deformation of the plunger. In addition, the monitoring display unit is outside the barrel and is not easily affected by the wear of the movable structure. Then an amplification component is provided to amplify the advance distance of the plunger and display it, which can more accurately display the actual advance distance of the plunger.

[0037] 2. The automatic metering PEEK production system and production process, the reflux pipe is connected to the mold, and a gate is hingedly arranged on the inner side of the reflux pipe by a first spring. The gate has a sealing effect on the reflux pipe to prevent the material from entering the reflux pipe when the mold is not full during the injection process. Only after the mold is filled with material, as the plunger advances, the pressure in the mold increases, the material pushes the gate to compress the first spring and enters the reflux pipe, the deflection of the gate connects the status light circuit, the status light is on, indicating that the injection of the mold is completed, reducing the injection loss existing in the injection of existing equipment.

[0038] 3. The automatic metering PEEK production system and production process, the end of the reflux pipe away from the mold is connected to the air pump, and negative pressure suction is formed in the reflux pipe by the air pump. After the end of the staged injection, the material in the reflux pipe is cleaned by the negative pressure suction to prevent the material from cooling and solidifying and clogging the reflux pipe; further, a guide baffle is hingedly provided at the connection between the reflux pipe and the air pump to prevent the material from entering the air pump and causing damage to the equipment; further, the first spring is tightly arranged through the first slider to facilitate the adjustment of the blocking force of the gate plate on the material in the mold. Only when the mold is full of material can the material push the gate plate into the reflux pipe.

[0039] 4. The automatic metering PEEK production system and production process, an amplifying gear is arranged on the inner side of the measuring ruler, and the U-shaped rod pushes the shift block to move along the slide groove as the plunger moves. The movement of the shift block drives the second slider to move through the engagement of the amplifying gear, which is then manifested as the movement of the indicator needle on the measuring ruler by a corresponding distance. The U-shaped rod fixed to the end of the plunger avoids the advancement error caused by wear or deformation of the plunger. The monitoring display is amplified by the amplifying component, which can more clearly express the actual advancement distance of the plunger, thereby realizing accurate measurement of injection production. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 It is a schematic diagram of the metering structure of the barrel side of the present invention;

[0043] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0044] Figure 4 It is a cross-sectional view of the structure of the return pipe of the present invention;

[0045] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0046] Figure 6 It is a cross-sectional view of the first slider structure of the present invention;

[0047] Figure 7 This is a schematic diagram of the metering indication structure of the outer wall of the barrel of the present invention;

[0048] Figure 8 It is a schematic diagram of the driving structure of the U-shaped rod to the amplification component of the present invention;

[0049] Fig. 9 This is a schematic diagram of the structure and driving of the amplifying component of the present invention;

[0050] Fig.10 For the present invention Figure 8 Enlarged schematic diagram of the structure at point C in the middle.

[0051] In the figure: 1. barrel; 2. plunger; 3. mold; 4. reflux pipe; 5. gate; 6. status light; 7. U-shaped rod; 8. measuring ruler; 9. indicator needle; 10. air pump; 11. guide baffle; 12. arc block; 13. first spring; 14. first slider; 15. positioning pin; 16. rubber pad; 17. rack; 18. second spring; 19. control knob; 20. advance rod; 21. tightening knob; 22. anti-interference box; 23. amplification component; 2301, dial block; 2302, second slider; 2303, amplification gear; 24. slide groove; 25. roller; 26. third spring. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The embodiment of the present invention discloses an automatic metering PEEK production system and production process;

[0054] According to the attached Figure 1 As shown, it includes a barrel 1, a plunger 2 and a mold 3. The plunger 2 is arranged inside the barrel 1, and the mold 3 is arranged at the end of the barrel 1. The material is heated and melted in the barrel 1, and then the molten material is pushed into the mold 3 by the plunger 2 to complete the injection production of parts. However, as the injection equipment of the prior art is used for a long time, the wear and deformation of the plunger 2 will affect the injection accuracy, resulting in a high defective rate in the production and a large amount of material waste. Therefore, the structure of the existing injection equipment is improved to ensure the injection accuracy of the equipment, thereby reducing material waste.

[0055] According to the attached Figure 2 , Attachment Figure 3 And attached Figure 5 As shown, a reflux pipe 4 is provided at one end of the barrel 1 close to the mold 3 , and the reflux pipe 4 is connected to the mold 3 . After injection is completed in the mold 3 , the molten material enters the reflux pipe 4 under pressure, so as to monitor the injection progress in the mold 3 .

[0056] A gate plate 5 is provided on the inner side of the open end of the reflux pipe 4, and a status light 6 is electrically provided on one side of the gate plate 5. The reflux pipe 4 is blocked by the gate plate 5 to provide a certain clamping force to ensure that the molten material cannot enter the reflux pipe 4 through the gate plate 5 before the injection is completed in the mold 3. In addition, when the gate plate 5 is pushed by the molten material to deflect at an angle, the circuit of the status light 6 is turned on, and the injection progress in the mold 3 is judged by observing whether the status light 6 is on.

[0057] A U-shaped rod 7 is fixedly connected to the side of the end of the plunger 2. The U-shaped rod 7 directly fixed to the end of the plunger 2 can intuitively reflect the actual advance distance of the plunger 2, avoiding the problem of error in judging the overall advance of the plunger 2 in the existing equipment. This structure monitors the advance distance by extending the U-shaped rod 7 to the outside of the barrel 1, avoiding the monitoring accuracy affected by wear or deformation of the plunger 2.

[0058] A measuring ruler 8 is fixedly provided on the outside of the barrel 1. When the plunger 2 advances, the U-shaped rod 7 fixed thereto advances synchronously, and then the change in the reading on the measuring ruler 8 is manifested on the outside of the barrel 1, which intuitively reflects the actual injection volume of the equipment.

[0059] According to the attached Figure 2 , Attachment Figure 4 And attached Figure 5 As shown, an air pump 10 is connected to the end of the reflux pipe 4 away from the mold 3. The air pump 10 creates a negative pressure state in the reflux pipe 4. After the mold 3 is replaced, the molten material in the reflux pipe 4 is emptied by the negative pressure to prevent the reflux pipe 4 from being blocked by the cooling of the material.

[0060] A guide baffle 11 is hingedly provided on the inner side of the return pipe 4 corresponding to the air pump 10. When negative pressure is formed in the return pipe 4 to drive the material to move, the material pushes the hinged guide baffle 11, and the pipeline leading to the air pump 10 is blocked by the guide baffle 11 to prevent the material from entering the air pump 10 and causing damage to the equipment.

[0061] An arc block 12 is fixed to the side of the gate plate 5 away from the mold 3. The arc block 12 fixed to the gate plate 5 can move in a stable arc shape following the angular deflection of the gate plate 5, thereby facilitating the stable installation of the gate plate 5 against the structure.

[0062] One end of the arc block 12 away from the gate plate 5 passes through the side wall of the reflux pipe 4 and is tightly provided with a first spring 13. The first spring 13 applies elastic force to the arc block 12, giving the gate plate 5 a certain pressing force to resist the squeezing effect of the molten material in the mold 3, so as to prevent the material in the mold 3 from entering the reflux pipe 4 through the gate plate 5 before the injection is completed and affecting the monitoring.

[0063] According to the attached Figure 3 and attached Figure 6 As shown, one end of the first spring 13 away from the arc block 12 is fixedly connected to the first slider 14, and the first slider 14 is slidably connected to the barrel 1. The sliding first slider 14 can adjust the elastic force of the first spring 13 by changing the installation position on the barrel 1, so that when the elastic coefficient of the first spring 13 is weakened, it can be adjusted to supplement the lack of the clamping force.

[0064] Positioning pins 15 are inserted and provided on both sides of the first slider 14 , and the first slider 14 is positioned at the installation position inside the barrel 1 through the positioning pins 15 . After the position of the first slider 14 is moved, it is positioned through the positioning pins 15 .

[0065] A rubber pad 16 is fixed to one end of the positioning pin 15 extending out of the first slider 14 , and the positioning pin 15 contacts and presses against the barrel 1 via the rubber pad 16 to increase the friction between the two, and the first slider 14 is positioned by using the friction.

[0066] A rack 17 is disposed on the side of the other end of the positioning pin 15 . The rack 17 is disposed at one end of the positioning pin 15 to facilitate the telescopic control of the positioning pin 15 , so as to facilitate the adjustment of the position of the first slider 14 .

[0067] A second spring 18 is provided on the side of the positioning pin 15 to be tightly sleeved. Under the elastic force of the second spring 18 , the positioning pin 15 is pressed against the side wall of the barrel 1 , thereby realizing the tight positioning of the first sliding block 14 .

[0068] The first sliding block 14 is provided with a control knob 19 on its side surface which engages with the two racks 17 . By twisting the control knob 19 , the extension and retraction of the two positioning pins 15 can be controlled simultaneously through the engagement relationship with the racks 17 .

[0069] The inner side of the first slider 14 is tightly against the rack 17 and is provided with an advance rod 20 corresponding to the advance of the second spring 18. A tightening knob 21 is provided on the side of the first slider 14 to engage with the advance rod 20 and rotate. The two advance rods 20 are driven in reverse at the same time through the engagement relationship between the tightening knob 21 and the advance rod 20. The advance of the two advance rods 20 presses against one end of the second spring 18 to control the length of the second spring 18, thereby adjusting the pressing force of the second spring 18 on the positioning pin 15.

[0070] According to the attached Figure 7 , Attachment Figure 8 and attached Fig.10 As shown, a status light 6 is electrically provided on one side of the gate 5 , and the injection progress of the mold 3 can be conveniently monitored through the status light 6 .

[0071] The outer wall of the barrel 1 is fixedly connected to an anti-interference box 22, and the measuring scale 8 is fixed on the inner side of the anti-interference box 22. The U-shaped rod 7 extends into the inner side of the anti-interference box 22 through the bottom and is slidably connected thereto. The anti-interference box 22 forms a protection for the measuring scale 8 to prevent accidental collision from affecting the precise measurement of the U-shaped rod 7 and the measuring scale 8.

[0072] An amplifying component 23 is provided on the side of the measuring ruler 8, and the indicating needle 9 is slidably set on the side of the measuring ruler 8 through the amplifying component 23. The amplifying component 23 is used to amplify the advance distance of the U-shaped rod 7, and the advance distance is fed back as a multiple of the indicating needle 9, thereby more conveniently and accurately identifying the advance of the plunger 2.

[0073] According to the attached Fig. 9 and attached Fig.10 As shown, the amplifying assembly 23 includes a shift block 2301, which is slidably arranged on the side of the measuring ruler 8 in parallel with the advancing direction of the U-shaped rod 7, a second slider 2302 is slidably arranged on the inner side of the measuring ruler 8, the indicating needle 9 is fixedly connected to the side of the second slider 2302, and an amplifying gear 2303 is arranged on the inner side of the measuring ruler 8, and the shift block 2301 and the second slider 2302 are meshed and transmitted through the amplifying gear 2303.

[0074] As the U-shaped rod 7 advances synchronously with the plunger 2, the end of the U-shaped rod 7 pushes the shift block 2301 and advances together. The shift block 2301 drives the second slider 2302 to advance by multiples through the amplifying gear 2303.

[0075] A slide groove 24 is provided on the side of the measuring ruler 8 parallel to the advancement direction of the U-shaped rod 7. A roller 25 is set on the inner side of the shift block 2301 through a spring. The shift block 2301 is slidably set on the inner side of the slide groove 24 through the roller 25. The shift block 2301 is installed by the roller 25 tightened by a spring to ensure stable advancement.

[0076] A third spring 26 is fixed to the side of the second slider 2302 away from the carry end. Under the action of the third spring 26, once the staged shift block 2301 is disengaged from the staged amplifying gear 2303, the second slider 2302 is quickly reset under the elastic force of the third spring 26.

[0077] An automatic metering PEEK production process, based on the above automatic metering PEEK production system, the production metering process is as follows:

[0078] S1, as the plunger 2 in the barrel 1 moves forward and injects, the material in the barrel 1 enters the mold 3, and after the mold 3 is filled with the material, the material enters the reflux pipe 4 under the action of the injection pressure;

[0079] S2, the material entering the reflux pipe 4 contacts and pushes the gate plate 5, the gate plate 5 deflects and connects the circuit of the status light 6, the status light 6 lights up, and the injection status of the mold 3 is fed back;

[0080] S3. As the plunger 2 is injected into the barrel 1, the U-shaped rod 7 fixed to the end of the plunger 2 pushes the indicator needle 9 on the side of the measuring ruler 8 to move forward. The U-shaped rod 7 is fixed to the end of the plunger 2, and the monitoring accuracy will not be affected by the wear or deformation of the plunger 2.

[0081] In addition, the U-shaped rod 7 pushes the shift block 2301 to move along the slide groove 24, and the shift block 2301 drives the second slider 2302 by engaging with the amplifying gear 2303. The movement of the second slider 2302 is displayed by the indicator needle 9 fixed thereto, and the movement distance of the U-shaped rod 7 is displayed more accurately by amplifying the movement distance.

[0082] The present invention discloses an automatic metering PEEK production system and production process, which have the following beneficial effects:

[0083] The automatic metering PEEK production system and production process are characterized in that a reflux pipe 4 connected to the mold 3 is arranged at one end of the barrel 1 close to the mold 3, and is closed by a gate plate 5 pressed against by a first spring 13. Only when the mold 3 is filled with materials can the materials enter the reflux pipe 4 to push the gate plate 5, and the injection progress of the mold 3 is monitored by the deflection of the gate plate 5; in addition, the end of the plunger 2 is connected by a U-shaped rod 7 to monitor the advance distance of the plunger 2, and the U-shaped rod 7 fixed to the end of the plunger 2 will not affect the monitoring accuracy due to the wear or deformation of the plunger 2. In addition, the monitoring display unit is outside the barrel 1 and is not easily affected by the wear of the movable structure. A magnifying component 23 is provided to magnify the advance distance of the plunger 2 and display it, so that the actual advance distance of the plunger 2 can be displayed more accurately.

[0084] Furthermore, the reflux pipe 4 is connected to the mold 3, and a gate plate 5 is hingedly arranged on the inner side of the reflux pipe 4 by the first spring 13. The gate plate 5 has a sealing effect on the reflux pipe 4 to prevent the material from entering the reflux pipe 4 when the mold 3 is not full during the injection process. Only after the mold 3 is filled with material, as the plunger 2 advances, the pressure in the mold 3 increases, and the material pushes the gate plate 5 to compress the first spring 13 to cause deformation and enter the reflux pipe 4. The deflection of the gate plate 5 connects the circuit of the status light 6, and the status light 6 is on, indicating that the injection of the mold 3 is completed, thereby reducing the injection loss existing in the injection of the existing equipment.

[0085] Furthermore, the end of the reflux pipe 4 away from the mold 3 is connected to the air pump 10, and negative pressure suction is formed in the reflux pipe 4 through the air pump 10. After the end of the stage injection, the material in the reflux pipe 4 is cleaned by the negative pressure suction to prevent the material from cooling and solidifying and clogging the reflux pipe 4; further, a guide baffle 11 is hingedly provided at the connection between the reflux pipe 4 and the air pump 10 to prevent the material from entering the air pump 10 and causing damage to the equipment; further, the first spring 13 is tightly arranged through the first slider 14 to facilitate the adjustment of the blocking force of the gate plate 5 on the material in the mold 3. Only when the mold 3 is full of material can the material push the gate plate 5 into the reflux pipe 4.

[0086] Furthermore, an amplifying gear 2303 is provided on the inner side of the measuring ruler 8, and the U-shaped rod 7 pushes the shift block 2301 to move along the slide groove 24 as the plunger 2 moves forward. The movement of the shift block 2301 drives the second slider 2302 to move through the engagement of the amplifying gear 2303, which is then manifested as the movement of the indicating needle 9 on the measuring ruler 8 by a corresponding distance. The U-shaped rod 7 fixed to the end of the plunger 2 avoids the advancement error caused by wear or deformation of the plunger 2. The monitoring display is amplified by the amplifying component 23, which can more clearly express the actual advancement distance of the plunger 2, thereby realizing accurate measurement of injection production.

[0087] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic metering PEEK production system, comprising a barrel (1), a plunger (2) and a mold (3), wherein the plunger (2) is arranged inside the barrel (1), and the mold (3) is arranged at the end of the barrel (1), characterized in that: A reflux pipe (4) is provided at one end of the barrel (1) close to the mold (3), a gate plate (5) is provided on the inner side of the open end of the reflux pipe (4), and a status light (6) is electrically provided on one side of the gate plate (5); The plunger (2) in the barrel (1) advances to perform injection, and after the material in the mold (3) is filled, the material flows back from the reflux pipe (4), and the gate (5) is pushed by the material to deflect, and then the deflection of the gate (5) connects the circuit of the status light (6), and the status light (6) lights up, reflecting the filling status of the material in the mold (3); A U-shaped rod (7) is fixedly connected to the side of the end of the plunger (2), a measuring ruler (8) is fixedly arranged on the outside of the barrel (1), and an indicating needle (9) is arranged on the side of the measuring ruler (8) corresponding to the U-shaped rod (7); The U-shaped rod (7) fixed to the end of the plunger (2) moves synchronously with the top piston of the plunger (2), and the U-shaped rod (7) intuitively reflects the movement distance of the indicator needle (9) along the measuring ruler (8), so that the injection of PEEK is accurately measured.

2. The automatic metering PEEK production system according to claim 1, characterized in that: An end of the reflux pipe (4) away from the mould (3) is connected to an air pump (10), and a guide baffle (11) is hingedly provided on the inner side of the reflux pipe (4) corresponding to the air pump (10).

3. The automatic metering PEEK production system according to claim 1, characterized in that: An arc block (12) is fixed to the side of the gate plate (5) away from the mold (3); an end of the arc block (12) away from the gate plate (5) penetrates the side wall of the return pipe (4) and is tightly abutted against a first spring (13).

4. The automatic metering PEEK production system according to claim 3, characterized in that: One end of the first spring (13) away from the arc block (12) is fixedly connected to a first slide block (14); the first slide block (14) is slidably connected to the barrel (1); positioning pins (15) are inserted on both sides of the first slide block (14); the first slide block (14) is positioned at an installation position inside the barrel (1) through the positioning pins (15).

5. The automatic metering PEEK production system according to claim 4, characterized in that: One end of the positioning pin (15) extending out of the first sliding block (14) is fixed with a rubber pad (16), a side surface of the other end of the positioning pin (15) is provided with a rack (17), and a second spring (18) is tightly sleeved and provided on the side surface of the positioning pin (15).

6. The automatic metering PEEK production system according to claim 5, characterized in that: The side of the first slider (14) engages with the two racks (17) and is plugged with a control knob (19); the inner side of the first slider (14) is tightly against the racks (17) and is provided with an advancement rod (20) corresponding to the advancement of the second spring (18); and the side of the first slider (14) engages with the advancement rod (20) and is rotatably provided with a tightening knob (21).

7. The automatic metering PEEK production system according to claim 1, characterized in that: The outer wall of the barrel (1) is fixedly connected to an anti-interference box (22), the measuring ruler (8) is fixed to the inner side of the anti-interference box (22), the U-shaped rod (7) extends into the inner side of the anti-interference box (22) through the bottom of the anti-interference box (22) and is slidably connected thereto, an amplifying component (23) is arranged on the side of the measuring ruler (8), and the indicating needle (9) is slidably arranged on the side of the measuring ruler (8) through the amplifying component (23).

8. The automatic metering PEEK production system according to claim 7, characterized in that: The amplifying assembly (23) comprises a shifting block (2301), the shifting block (2301) being slidably arranged on the side of the measuring ruler (8) in parallel with the advancing direction of the U-shaped rod (7), a second sliding block (2302) being slidably arranged on the inner side of the measuring ruler (8), the indicating needle (9) being fixedly connected to the side of the second sliding block (2302), an amplifying gear (2303) being arranged on the inner side of the measuring ruler (8), and the shifting block (2301) and the second sliding block (2302) being meshed and transmitted via the amplifying gear (2303).

9. The automatic metering PEEK production system according to claim 8, characterized in that: A slide groove (24) is provided on the side of the measuring ruler (8) parallel to the advancing direction of the U-shaped rod (7); a roller (25) is provided on the inner side of the shift block (2301) via a spring, and the shift block (2301) is slidably provided on the inner side of the slide groove (24) via the roller (25); and a third spring (26) is fixed to the side of the second sliding block (2302) away from the advancing end.

10. A production process of PEEK with automatic metering, characterized in that: Based on the automatic metering PEEK production system according to any one of claims 1 to 9, the production metering process includes: S1. As the plunger (2) in the barrel (1) is injected, the material in the barrel (1) enters the mold (3). After the mold (3) is filled with the material, the material enters the return pipe (4) under the action of pressure. S2, the material entering the reflux pipe (4) contacts and pushes the gate plate (5), the gate plate (5) deflects and connects the circuit of the status light (6), the status light (6) lights up, and the injection state of the mold (3) is fed back; S3. As the plunger (2) moves forward inside the barrel (1), the U-shaped rod (7) fixed to the end of the plunger (2) pushes the indicator needle (9) on the side of the measuring ruler (8) to move forward, and the injection volume of the material is accurately displayed by the position of the indicator needle (9).

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