Automatic detection and adjustment device and method for pultrusion

Abstract

The invention belongs to the technical field of pultrusion processing. The automatic detecting and adjusting device comprises a pultrusion table, a supporting seat table, a multi-directional hydraulic adjusting mechanism, a servo hydraulic machine table and a control table, the supporting seat table, the multi-directional hydraulic adjusting mechanism, the servo hydraulic machine table and the control table are arranged on the pultrusion table, and the supporting seat table is used for bearing a pultrusion mold; the multidirectional hydraulic adjusting mechanism is used for adjusting the position of the pultrusion die, and the servo hydraulic machine table is used for bearing the clamp; a positioning sensor is arranged on the control table, the positioning sensor is used for linearly positioning an outlet of the pultrusion die and an inlet of the clamp, a thickness measuring sensor is arranged on the pultrusion table, and the thickness measuring sensor and the positioning sensor are both connected with a control terminal on the control table. And the control terminal is used for adjusting forming process parameters and mold position states according to the received positioning sensing data and thickness data, so that the product forming efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pultrusion processing, and particularly relates to an automatic detection and adjustment device and method for pultrusion molding. Background Art

[0002] The statements in this part merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Pultrusion molding refers to a process method in which continuous fibers (such as glass fibers, carbon fibers, basalt fibers, etc.) impregnated with resin are heated and cured in a mold and continuously pulled out of the product through a traction device. This process is mainly applicable to the production of profiles with various cross-sectional shapes, such as rods, tubes, solid profiles (such as I-shaped, channel-shaped, square, etc.) and hollow profiles (such as door and window profiles, blades, etc.).

[0004] Currently, in the pultrusion molding die table, during the molding process, there are still problems such as difficult die positioning before molding and long traction distance, difficult die adjustment during the molding process and no in-process product detection, and a lack of a systematic adjustment scheme. More specifically, the existing solutions mainly have the following disadvantages: (1) Only by optimizing the existing pultrusion production equipment, the production quality and production efficiency are improved, without considering the material waste and die clogging risk in the initial stage of the molding process; for the adjustment of straightness and product thickness, only simple adjustments are made through the die holder, and the overall angle change of the die cannot be achieved, resulting in adjustment limitations; (2) No solutions to material waste and product quality consistency before and during molding are found from the actual application process, and reasonable solutions cannot be provided. Summary of the Invention

[0005] In order to solve the deficiencies of the prior art, the present invention provides an automatic detection and adjustment device and method for pultrusion molding, which supplements the placement of the pultrusion die and the shortcoming of the direction adjustment between the die and the fixture in the design structure, adopts a multi-directional pultrusion die positioning method, can realize the up, down, left and right adjustment of the pultrusion die, and uses a non-contact thickness gauge to measure during the product process, improving the product molding efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides an automatic detection and adjustment device for pultrusion molding.

[0008] An automatic detection and adjustment device for pultrusion molding, comprising: a pultrusion table and a support seat table, a multi-directional hydraulic adjustment mechanism, a servo hydraulic press table and a control console arranged on the pultrusion table, the support seat table is used to carry the pultrusion die, the multi-directional hydraulic adjustment mechanism is used to adjust the position of the pultrusion die, and the servo hydraulic press table is used to carry the fixture;

[0009] A positioning sensor is arranged on the console. The positioning sensor is used for linear positioning of the outlet of the pultrusion die and the inlet of the fixture. A thickness measurement sensor is arranged on the pultrusion table. Both the thickness measurement sensor and the positioning sensor are connected to a control terminal on the console. The control terminal is used for adjusting the forming process parameters and the position state of the die according to the received positioning sensing data and thickness data.

[0010] As a further limitation of the first aspect of the present invention, the multi-directional hydraulic adjustment mechanism includes: a hydraulic mechanism, a fixing member, and a constraint frame. The movable end of the hydraulic mechanism is connected to the fixing member and can drive the fixing member to move up and down;

[0011] A positioning chute is provided at the top of the fixing member. A slider is provided at the bottom of the constraint frame. The slider can slide horizontally in the positioning chute. A plurality of threaded holes are provided on both the slider and the positioning chute. The constraint frame is fixed by cooperating the threaded holes with positioning bolts. The constraint frame is used for accommodating and limiting the pultrusion die.

[0012] As a further limitation of the first aspect of the present invention, there are at least two multi-directional hydraulic adjustment mechanisms. The constraint frames of the two multi-directional hydraulic adjustment mechanisms act on the pultrusion die together.

[0013] As a further limitation of the first aspect of the present invention, the constraint frame is rectangular and surrounded by a plurality of plate members. The bottom plate of the constraint frame is a heating plate for heating the material.

[0014] As a further limitation of the first aspect of the present invention, it further includes a movable traction table arranged on the pultrusion table. The movable traction table is arranged between the outlet of the pultrusion die and the inlet of the fixture. The movable traction table is used for traction of the preliminary product.

[0015] As a further limitation of the first aspect of the present invention, the movable traction table includes: a traction table body and traction rollers located in the through holes in the middle of the traction table body. The traction rollers are arranged in two upper and lower layers, and each of the upper and lower layers of traction rollers includes a plurality of symmetrically arranged ones.

[0016] As a further limitation of the first aspect of the present invention, the thickness measurement sensor adopts a point-type thickness measuring instrument. The point-type thickness measuring instrument is installed in the middle front section of the pultrusion table and is used for measuring the thickness of the profile extruded by the pultrusion die.

[0017] As a further limitation of the first aspect of the present invention, the forming process parameters include: pultrusion speed, injection pressure, injection volume, and fiber content.

[0018] As a further limitation of the first aspect of the present invention, an air cooling box is further arranged on the pultrusion table, and the air cooling box is arranged at the outlet position of the pultrusion die, and the air cooling box is used to cool the pultruded profile.

[0019] In a second aspect, the present invention provides an automated detection and adjustment method for pultrusion.

[0020] An automated detection and adjustment method for pultrusion, using the automated detection and adjustment device for pultrusion described in the first aspect of the present invention, comprises the following process:

[0021] Before molding, place the molding die on the molding support seat, install the fixture on the servo hydraulic machine, and use the positioning sensor on the console to linearly position the molding die outlet and the fixture inlet. Use the multi-directional hydraulic adjustment mechanism to adjust the mold and fixture up, down, left, and right according to the positioning situation to achieve preliminary positioning.

[0022] After the molding die and fixture are positioned and installed, the movable traction table is installed on the pultrusion table, and the traction of the early products is completed by the movable traction table;

[0023] Measuring the molding thickness of the extruded profile by means of a thickness measuring sensor;

[0024] Adjust the molding process parameters and mold position status according to the molding status of the product and the obtained thickness data;

[0025] After multiple thickness and straightness adjustments, the molding die position and fixture position are fixed and positioned to complete the final positioning;

[0026] The pultruded profiles are cut and placed for subsequent inspection and testing.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The control terminal of the present invention is used to adjust the molding process parameters and the mold position status according to the received positioning sensor data and thickness data, such as pultrusion speed, injection pressure, injection amount and fiber content, so as to avoid the problem of waste of resin and fiber materials caused by only checking the molding status of the product after the product is formed and cut.

[0029] 2. The mold support seat of the present invention can realize the installation and fixation of the pultrusion mold, and after the pultrusion mold is installed, the mold support seat can be adjusted up and down and left and right to achieve multi-directional positioning of the pultrusion process; and the mold support seat can directly realize rapid heating and cooling of the mold, thereby improving the efficiency of mold removal and labor costs.

[0030] 3. The present invention is equipped with a positioning sensor and a thickness measuring sensor, which can assist in the linear adjustment of the pultrusion die and fixture and the detection of the wall thickness and forming state during the product forming process.

[0031] 4. After adding a movable traction platform to the present invention, the material loss in the initial stage of forming is effectively reduced, and the traction efficiency is enhanced, thereby preventing the mold blockage problem that may occur in the initial stage of pultrusion operation after the mold is injected with glue.

[0032] Advantages of additional aspects of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The specification drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0034] Figure 1 It is a schematic diagram of the overall automatic detection and adjustment device for pultrusion forming provided by the present invention;

[0035] Figure 2 It is a schematic diagram of the multi-directional hydraulic adjustment mechanism provided by the present invention;

[0036] Figure 3 It is a schematic diagram of the movable traction table provided by the present invention;

[0037] Among them, 1. Pultrusion table; 2. Servo hydraulic press table; 3. Console; 4. 360° support rod; 5. Movable traction table; 6. Positioning sensor; 7. Air cooling box; 8. Multi-directional hydraulic adjustment mechanism; 9. Support seat table; 10. Forming die; 11. Constraint frame; 12. Fixed part; 13. Hydraulic mechanism; 14. Traction roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The present invention will be further described below in conjunction with the drawings and embodiments.

[0039] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0040] In this implementation, an automatic detection and adjustment device for pultrusion is proposed. Taking the "forming - structure - function" of the product as the route, the pultrusion die 10 is supported, direction - adjusted, and heated through a multi - directional hydraulic support device; the positioning sensor 6 (such as an infrared level measurement sensor or a laser level measurement sensor) on the console 3 can realize the automatic adjustment of the fixture position and the support position; the thickness measurement sensor at the rear end of the pultrusion die 10 can realize the non - contact thickness detection of the product. The present invention solves the problems of difficult die positioning and process adjustment of the offset between the fixture and the outlet position of the pultrusion die 10, effectively solves the difficulty of multiple handling of the pultrusion die 10 in the die positioning stage and the product forming adjustment stage, solves the problems of positioning, fixing, linear adjustment, and wall thickness measurement of the pultrusion die 10 preparation work in an automated and intelligent manner, reduces the manual requirements before and during the pultrusion process, improves the die automatic adjustment ability during the pultrusion process, and realizes the efficiency improvement of the pultrusion forming process.

[0041] More specifically, as Figure 1 shown, it includes: a pultrusion table 1, a support seat table 9, a multi - directional hydraulic adjustment mechanism 8, a servo hydraulic press table 2, and a console 3 arranged on the pultrusion table 1. The support seat table 9 is used to carry the pultrusion die 10, the multi - directional hydraulic adjustment mechanism 8 is used to adjust the position of the pultrusion die 10, the servo hydraulic press table 2 is used to carry the fixture, the console 3 is fixed on the pultrusion table 1 through a 360° support rod 4, and the 360° support rod 4 can drive the console to rotate 360°.

[0042] A positioning sensor 6 is arranged on the console 3. The positioning sensor 6 is used for linear positioning of the outlet of the pultrusion die 10 and the inlet of the fixture. A thickness measurement sensor is arranged on the pultrusion table 1. Both the thickness measurement sensor and the positioning sensor 6 are connected to the control terminal on the console 3. The control terminal is used to adjust the forming process parameters and the die position state according to the received positioning sensing data and thickness data, can realize the linear positioning of the die and the fixture before forming, and the fine adjustment of the die position during the forming process, improve the forming quality and efficiency of the pultrusion product, can measure the thickness state of the product in time according to the product forming state, and avoid the disadvantage that the thickness can only be checked after the product is formed and cut, resulting in a large amount of waste of product materials.

[0043] Preferably, in this implementation, as Figure 2 shown, the multi - directional hydraulic adjustment mechanism 8 includes: a hydraulic mechanism 13, a fixing member 12, and a constraint frame 11. The movable end of the hydraulic mechanism 13 is connected to the fixing member 12 and can drive the fixing member 12 to move up and down;

[0044] The top of the fixing member 12 is provided with a positioning chute, and the bottom of the constraint frame 11 is provided with a slider. The slider can slide horizontally in the positioning chute, and a plurality of threaded holes are formed in both the slider and the positioning chute. The constraint frame 11 is fixed by matching the threaded holes with positioning bolts. The constraint frame 11 is used to accommodate and limit the pultrusion die 10, and the bottom plate of the constraint frame 11 is a heating plate capable of heating the material.

[0045] It can be understood that in some other implementation manners, the hydraulic mechanism 13 here can also be replaced by other linear driving mechanisms. For example, an electric cylinder can be used, which will not be elaborated here.

[0046] In a preferred implementation manner of the present implementation, there are at least two multi-directional hydraulic adjustment mechanisms 8, and the constraint frames 11 of the two multi-directional hydraulic adjustment mechanisms 8 act together on the pultrusion die 10.

[0047] In a preferred implementation manner of the present implementation, the constraint frame 11 is rectangular and surrounded by a plurality of plate members.

[0048] In a preferred implementation manner of the present implementation, it further includes a movable traction table 5 arranged on the pultrusion table 1. The movable traction table 5 is arranged between the outlet of the pultrusion die 10 and the inlet of the fixture, and the movable traction table 5 is used for traction of the pre-product.

[0049] In a preferred implementation manner of the present implementation, as Figure 3 shown, the movable traction table 5 includes a traction table body and traction rollers 14 located in the through hole in the middle of the traction table body. The traction rollers 14 are arranged in two layers, and each of the upper and lower layers of traction rollers 14 includes a plurality of symmetrically arranged upper and lower ones. The traction rollers 14 here can rotate automatically driven by a driving mechanism.

[0050] In a preferred implementation manner of the present implementation, the thickness measurement sensor adopts a point-type thickness measuring instrument, and the point-type thickness measuring instrument is installed in the middle front section of the pultrusion table 1 for measuring the thickness of the profile extruded by the pultrusion die 10.

[0051] In a preferred implementation manner of the present implementation, an air cooling box 7 is further arranged on the pultrusion table 1. The air cooling box 7 is arranged at the outlet position of the pultrusion die 10, and the air cooling box 7 is used for cooling the extruded profile.

[0052] The specific working process of the above device includes the following steps:

[0053] S1: Before forming, place the pultrusion die 10 on the forming support base, install the fixture on the servo hydraulic press table 2, and the positioning sensor 6 on the console 3 can achieve linear positioning of the outlet of the pultrusion die 10 and the inlet of the fixture. According to the positioning situation, use the multi-directional hydraulic adjustment mechanism 8 to preliminarily adjust the die and the fixture up, down, left, and right. The bottom of the multi-directional hydraulic adjustment mechanism 8 is a hydraulic structure, which can achieve the up and down movement of the die, and the left and right movement of the pultrusion die 10 is achieved by using the positioning chute and positioning bolts at the position close to the heating plate;

[0054] S2: After the pultrusion die 10 and the fixture are positioned and installed, install the movable traction table 5 on the pultrusion table 1 to facilitate the traction of the preliminary product (this pultrusion process is polyurethane pultrusion. During the initial pultrusion process, after the injection molding machine injects glue, it is difficult to pull, or the injection parameters need to be changed after the product is pulled to the servo hydraulic press table 2. Therefore, adding the movable traction table 5 helps the rapid forming of the product and reduces material waste);

[0055] S3: Install the point-type thickness measuring instrument in the middle and front section of the pultrusion table 1 to measure the forming thickness of the product (the thickness can obtain the corresponding beam displacement data depending on the beam of the point-type thickness measuring instrument, and the thickness is determined according to the beam displacement distance);

[0056] S4: According to the forming state of the profiled product after pultrusion and the obtained thickness data, the parameters and the die position state during the forming process can be adjusted, such as the pultrusion speed, injection pressure, injection volume, and fiber content, etc., to avoid wasting resin and fiber materials by only checking the forming state of the product after the product is formed and cut;

[0057] S5: After the product has been adjusted for thickness and straightness multiple times, fix the positions of the die and the fixture to reduce the adjustment and unnecessary product waste during the next pultrusion forming process.

[0058] S6: Cut and place the product after pultrusion forming for subsequent inspection tests.

[0059] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic detection and adjustment device for pultrusion, characterized in that: include: A pultrusion table and a support base, a multi-directional hydraulic adjustment mechanism, a servo hydraulic machine and a control console arranged on the pultrusion table, wherein the support base is used to carry the pultrusion die, the multi-directional hydraulic adjustment mechanism is used to adjust the position of the pultrusion die, and the servo hydraulic machine is used to carry the fixture; A positioning sensor is arranged on the console, and the positioning sensor is used to perform linear positioning of the outlet of the pultrusion die and the inlet of the fixture. A thickness measurement sensor is arranged on the pultrusion table, and the thickness measurement sensor and the positioning sensor are both connected to the control terminal on the console, and the control terminal is used to adjust the molding process parameters and the mold position state according to the received positioning sensor data and thickness data.

2. The automatic detection and adjustment device for pultrusion according to claim 1, characterized in that: The multi-directional hydraulic adjustment mechanism comprises: a hydraulic mechanism, a fixing part and a constraint frame, wherein the movable end of the hydraulic mechanism is connected to the fixing part and can drive the fixing part to move up and down; A positioning groove is provided on the top of the fixing part, and a sliding block is provided on the bottom of the constraint frame. The sliding block can slide horizontally in the positioning groove, and a plurality of threaded holes are provided on the sliding block and the positioning groove. The constraint frame is fixed by cooperating with positioning bolts through the threaded holes. The constraint frame is used to accommodate and limit the pultrusion die.

3. The automatic detection and adjustment device for pultrusion according to claim 2, characterized in that: There are at least two multi-directional hydraulic adjustment mechanisms, and the constraint frames of the two multi-directional hydraulic adjustment mechanisms act together on the pultrusion die.

4. The automatic detection and adjustment device for pultrusion according to claim 2, characterized in that: The restraining frame is rectangular and is surrounded by a plurality of plates. The bottom plate of the restraining frame is a heating plate for heating the material.

5. The automatic detection and adjustment device for pultrusion according to any one of claims 1 to 4, characterized in that: It also includes a movable traction table arranged on the pultrusion table, wherein the movable traction table is arranged between the outlet of the pultrusion die and the inlet of the clamp, and the movable traction table is used for traction of the early product.

6. The automatic detection and adjustment device for pultrusion according to claim 5, characterized in that: The movable traction platform comprises: a traction platform body, and traction rollers located in a through hole in the middle of the traction platform body. The traction rollers are arranged in two layers, and the upper and lower layers of the traction rollers respectively include a plurality of symmetrical ones.

7. The automatic detection and adjustment device for pultrusion according to any one of claims 1 to 4, characterized in that: The thickness measuring sensor adopts a point thickness measuring instrument, which is installed in the middle front section of the pultrusion table and is used to measure the thickness of the profile extruded by the pultrusion die.

8. The automatic detection and adjustment device for pultrusion according to any one of claims 1 to 4, characterized in that: The molding process parameters include: pultrusion speed, injection pressure, injection volume and fiber content.

9. The automatic detection and adjustment device for pultrusion according to any one of claims 1 to 4, characterized in that: The pultrusion table is also provided with an air cooling box, which is arranged at the exit position of the pultrusion die and is used to cool the pultruded profile.

10. An automated detection and adjustment method for pultrusion, characterized in that: The automatic detection and adjustment device for pultrusion molding according to any one of claims 1 to 9 comprises the following process: Before molding, place the molding die on the molding support seat, install the fixture on the servo hydraulic machine, and use the positioning sensor on the console to linearly position the molding die outlet and the fixture inlet. Use the multi-directional hydraulic adjustment mechanism to adjust the mold and fixture up, down, left, and right according to the positioning situation to achieve preliminary positioning. After the molding die and fixture are positioned and installed, the movable traction table is installed on the pultrusion table, and the traction of the early products is completed by the movable traction table; Measuring the molding thickness of the extruded profile by means of a thickness measuring sensor; Adjust the molding process parameters and mold position status according to the molding status of the product and the obtained thickness data; After multiple thickness and straightness adjustments, the molding die position and fixture position are fixed and positioned to complete the final positioning; The pultruded profiles are cut and placed for subsequent inspection and testing.

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