Pultrusion profile length metering device

Abstract

The utility model relates to a pultrusion profile length metering device, and aims to solve the problems of large measurement error, complex operation and insufficient control precision in the prior art. The device comprises a machine base, a pultrusion die, a motor, a lead screw, a movable base, double screws, a sliding block, a gear, a sliding rod, a spring, a metering positioning block, a clamping mechanism and the like. The motor drives the lead screw to rotate so as to drive the double screws and the sliding block to accurately adjust the pultrusion length of the profile. A metering positioning block is matched with an extrusion head, so that the pultrusion process can be automatically stopped when a preset length is reached, and the accurate size of the profile is ensured; the clamping mechanism controls an upper clamping plate to be matched with a forming clamping base through a hydraulic cylinder, and it is guaranteed that a profile is kept in a stable and accurate clamping state in the pultrusion process. The device has high automation level, accurate length control and stable working performance, is suitable for accurate metering and control of the profile in the pultrusion process, and has wide application prospects.

Description

Technical Field

[0001] This utility model belongs to the field of pultruded profile production technology, specifically relating to a pultruded profile length measuring device. Background Technology

[0002] Pultrusion is a process in which reinforcing fiber materials are continuously pulled into a heated mold to cure resin. It is widely used in the mass production of composite profiles such as fiberglass and carbon fiber. With the increasing application of pultruded products in construction, transportation, energy, and other fields, higher requirements are being placed on the precision and stability of profile length control during the pultrusion process.

[0003] Most existing pultrusion equipment uses simple manual measurement, manual positioning, or single-point limit sensing to control the pultrusion length. These methods not only suffer from large human errors, low operating efficiency, and low automation, but also often result in significant deviations in the length of the pultruded profiles due to untimely response during actual use, thus affecting product consistency and subsequent use.

[0004] Especially during continuous pultrusion, if it is impossible to accurately determine whether the profile has reached the preset length and to stop and reset the pultrusion process in a timely manner, it can easily lead to material waste, equipment overload, or even damage to the profile end structure. Therefore, how to achieve real-time and accurate measurement and control of the profile length during pultrusion has become a key technical problem that urgently needs to be solved in this field.

[0005] In addition, some existing pultrusion devices with metering functions have complex structures and are cumbersome to adjust, making it difficult to balance high efficiency and reusability, and they are not well-suited for industrial mass production. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a pultruded profile length measuring device that is compact in structure, reliable in operation, convenient in operation, and has high-precision automatic measuring and control capabilities, so as to improve the automation level of pultrusion molding and product consistency.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A pultruded profile length measuring device includes a base, a pultrusion die mounted on one side of the top of the base, symmetrically arranged rails on the upper surface of the base, a motor fixed on the side of the base away from the pultrusion die, a lead screw rotatably mounted on the upper surface of the base, the lead screw being placed between two rails, the end of the lead screw being mounted on the output end of the motor, a movable seat slidably mounted on the surfaces of the two rails, and a clamping mechanism mounted on the top of the movable seat;

[0009] The upper surface of the movable seat is provided with a sliding groove, and the center of the lower surface of the movable seat is provided with a through groove. The lead screw passes through the through groove, and the through groove is connected to the interior of the sliding groove. A double screw is rotatably installed inside the sliding groove, and two sliders are symmetrically slidably installed inside the through groove. The two sliders are respectively screwed onto different thread surfaces of the double screw. A C-shaped threaded sleeve is provided at the bottom of the slider. The C-shaped threaded sleeve is placed inside the through groove, and the two C-shaped threaded sleeves are respectively placed on both sides of the lead screw. The two C-shaped threaded sleeves are combined to form a threaded sleeve that is compatible with the lead screw.

[0010] Furthermore, the twin screws pass through one side of the movable seat, and gears are provided at the ends of the twin screws. Support plates are symmetrically arranged on one side of the movable seat.

[0011] Furthermore, a slide rod is slidably installed between the two support plates. The slide rod is horizontally positioned below the gear, and a toothed rod is provided on the surface of the slide rod, which meshes with the gear.

[0012] Furthermore, an extrusion head is provided at the end of the slide bar away from the pultrusion die, and a metering positioning block is installed on the upper surface of the machine base by bolts according to the measurement dimensions, and the metering positioning block corresponds to the extrusion head.

[0013] Furthermore, a spring is fitted onto the surface of the slide bar, the spring being positioned between the support plate and the toothed bar, with the spring positioned on the side of the toothed bar closer to the pultrusion die.

[0014] Furthermore, the clamping mechanism includes a frame fixed to the surface of the movable seat, a forming clamping seat fixed to the lower inner side of the frame, a control hydraulic cylinder fixed to the top of the frame, an upper clamping plate installed at the output end of the control hydraulic cylinder, and the upper clamping plate and the forming clamping seat clamping the pultruded part.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Firstly, this device, through the precise connection between the motor and the lead screw, combined with the smooth sliding of the moving base, enables strict control of the profile length during the pultrusion process. Compared to traditional manual measurement and single-point limit control methods, the automated adjustment function of this device significantly improves accuracy and work efficiency. The rotational drive of the lead screw, through the precise cooperation of the twin screws and the slider, allows for precise control of the pultrusion length of the profile without interference from external factors, avoiding errors caused by human error.

[0017] Secondly, addressing the common issue of length deviation in pultruded profiles caused by untimely response in existing equipment, this device utilizes the combined use of a metering positioning block and an extrusion head to ensure that the system automatically stops the pultrusion process when the profile reaches the preset length. This control method solves the problem of profiles being too long or too short due to insufficient control precision in traditional equipment, ensuring that the profile length is accurately achieved in each production run, thus improving product consistency and quality.

[0018] In addition, this device employs a slider and twin-screw design, allowing the slider to slide precisely on the support plate. Precise control is achieved through the meshing of racks and pinions, avoiding length errors caused by uneven sliding. The springs fitted onto the slider surface also play a crucial role, providing the necessary reaction force so that the slider can quickly return to its original position after completing one pultrusion operation, facilitating subsequent use.

[0019] Regarding the clamping mechanism, this device uses a hydraulic cylinder to control the lifting and lowering of the upper clamping plate, which, together with the fixing action of the forming clamping seat, ensures stable clamping of the profile during the pultrusion process. Unlike the manual clamping in existing technologies, the automatic clamping system of this device improves work efficiency and avoids common problems in traditional clamping methods, such as insecure clamping and profile deformation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation three-dimensional structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the movable seat and clamping mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the movable base and C-shaped screw sleeve installation structure of this utility model;

[0023] Figure 4 For the present utility model Figure 3 A schematic diagram of the cross-sectional structure;

[0024] Figure 5 This is a schematic diagram of the C-type screw sleeve structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the toothed rod structure of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Machine base; 12. Pultrusion die; 13. Track; 14. Lead screw; 15. Motor; 21. Moving seat; 22. Slide groove; 23. Through groove; 24. Twin screw; 25. Gear; 26. Support plate; 3. Metering positioning block; 4. Slider; 41. C-type threaded sleeve; 5. Slide rod; 51. Extrusion head; 52. Toothed rod; 6. Spring; 7. Clamping mechanism; 71. Frame; 72. Forming clamping seat; 73. Control hydraulic cylinder; 74. Upper clamping plate. Detailed Implementation

[0028] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0029] Example 1:

[0030] refer to Figures 1-6 As shown, a pultruded profile length measuring device includes a base 1. A pultrusion die 12 is mounted on one side of the top of the base 1. The pultrusion die 12 is used to shape the material, ensuring that it has the required shape and size during the pultrusion process. Tracks 13 are symmetrically arranged on the upper surface of the base 1. The tracks 13 support and guide a moving seat 21 to slide smoothly on the base 1, ensuring precise length control. A motor 15 is fixed on the side of the base 1 away from the pultrusion die 12. The motor 15 provides driving force, driving a lead screw 14 to rotate through its output end to achieve precise movement control. The lead screw 14 is rotatably mounted on the upper surface of the base 1, positioned between the two tracks 13 to ensure smooth and unobstructed rotation. The end of the lead screw 14 is mounted on the output end of the motor 15. The motor 15 is connected to the lead screw 14 through bearings and a coupling to ensure stable rotation. The two rails 13 are slidably mounted with movable seats 21. The movable seats 21 serve as the main support components for the pultruded profile and are responsible for receiving and moving the clamping mechanism 7 to perform a precise pultrusion process.

[0031] A clamping mechanism 7 is installed on the top of the movable seat 21. The clamping mechanism 7 adjusts the position of the upper clamping plate 74 by controlling the hydraulic cylinder 73 to clamp and maintain the stability of the pultruded profile. A slide groove 22 is formed on the upper surface of the movable seat 21. The slide groove 22 is used to install the twin screw 24 to ensure that it can be accurately positioned and controlled during the pultrusion process. A through groove 23 is formed at the center of the lower surface of the movable seat 21. The through groove 23 passes through the lead screw 14, allowing the lead screw 14 to rotate freely within the movable seat 21. The through groove 23 communicates with the interior of the slide groove 22. The twin screw 24 is rotatably installed inside the slide groove 22. The rotation of the twin screw 24 drives the movement of the slider 4, thereby achieving precise control of the length of the pultruded profile. The slider 4 is symmetrically slidably installed inside the through groove 23. The slider 4 is connected to the twin screw 24 by threads, which can precisely adjust its position. Two sliders 4 are screwed onto different threaded surfaces of the twin screw 24. A C-shaped threaded sleeve 41 is provided at the bottom of each slider 4. The C-shaped threaded sleeve 41 engages with the lead screw 14 to ensure that the slider 4 can move precisely along the direction of the lead screw 14. The C-shaped threaded sleeve 41 is placed inside the through groove 23. Two C-shaped threaded sleeves 41 are placed on both sides of the lead screw 14, and the two C-shaped threaded sleeves 41 combine to form a threaded sleeve that matches the lead screw 14, ensuring a tight fit and avoiding accuracy errors caused by loose threads.

[0032] refer to Figure 3 and Figure 4 As shown, a twin screw 24 passes through one side of the movable seat 21. A gear 25 is provided at the end of the twin screw 24. The gear 25 drives the slide rod 5 to perform precise displacement control by meshing with the rack 52. Support plates 26 are symmetrically arranged on one side of the movable seat 21. The support plates 26 are used to support the slide rod 5 and keep it horizontal and stable, avoiding deformation or errors caused by uneven support.

[0033] refer to Figure 2 and Figure 6 As shown, a slide rod 5 is slidably mounted between two support plates 26. The slide rod 5 supports the extrusion head 51 and provides necessary guidance. The slide rod 5 is horizontally positioned below the gear 25 to ensure a stable meshing relationship between the slide rod 5 and the gear 25 and to avoid errors during sliding. A toothed bar 52 is provided on the surface of the slide rod 5. The toothed bar 52 meshes with the gear 25. The rotation of the gear 25 drives the slide rod 5 to move on the slide rail, thereby precisely controlling the pultrusion length of the profile.

[0034] refer to Figure 1As shown, an extrusion head 51 is provided at the end of the slide bar 5 away from the pultrusion die 12. The extrusion head 51 is used for final shaping and precise measurement of the profile. When the slide bar 5 moves, the extrusion head 51 is acted upon by the metering positioning block 3, stopping its movement according to the set length to ensure the accurate dimensions of the profile. The metering positioning block 3 is bolted to the upper surface of the machine base 1 according to the measurement dimensions. The metering positioning block 3 corresponds to the extrusion head 51 and is fixed to the surface of the machine base 1 by bolts to ensure that its position does not shift, thereby achieving accurate measurement.

[0035] refer to Figure 6 As shown, a spring 6 is fitted onto the surface of the slide bar 5. The spring 6 provides a reaction force to ensure that the slide bar 5 can return to its initial position without external interference. The spring 6 is positioned between the support plate 26 and the toothed bar 52. The force of the spring 6 is mainly used to push the slide bar 5 back to its original position, ensuring that it can return to its initial state for easy operation next time. The spring 6 is positioned on the side of the toothed bar 52 closer to the pultrusion die 12 to ensure mechanical balance during the pultrusion process.

[0036] refer to Figure 2 As shown, the clamping mechanism 7 includes a frame 71 fixed to the surface of the movable seat 21. The frame 71 supports and fixes the clamping structure. A forming clamping seat 72 is fixed to the lower inner side of the frame 71. The forming clamping seat 72 works in conjunction with the upper clamping plate 74 to ensure that the profile can be firmly clamped and kept horizontal during the pultrusion process, preventing deformation of the profile due to external forces. A control hydraulic cylinder 73 is fixed to the top of the frame 71. The control hydraulic cylinder 73 controls the lifting and lowering of the upper clamping plate 74 through its output end to achieve precise clamping. The upper clamping plate 74 and the forming clamping seat 72 clamp the pultruded profile, ensuring stable output of the pultruded profile.

[0037] Example 2: Example of precise pultrusion length control

[0038] This embodiment provides a pultruded profile length measuring device. The device uses a motor 15 to drive a lead screw 14 to rotate, which in turn drives a twin screw 24 and a slider 4 in precise engagement, thereby achieving accurate control of the pultruded profile length. During operation, the end of the lead screw 14 is connected to the output end of the motor 15. By controlling the motor's speed and direction, the movement of the moving seat 21 can be precisely controlled. The design of the twin screw 24 allows the slider 4 to slide precisely along the direction of the lead screw 14, thereby adjusting the pultruded length of the profile. Through the cooperation of the measuring positioning block 3 and the extrusion head 51, the pultrusion process automatically stops when the profile reaches the set length, avoiding errors from manual operation.

[0039] Materials and data:

[0040] Motor model: YX3-100L-4, power: 0.75kW, speed: 1450r / min.

[0041] The lead screw has a diameter of 12mm and a length of 1000mm. It is made of steel and has high compressive strength and wear resistance.

[0042] Twin screw diameter: 8mm, made of wear-resistant alloy steel to ensure no deformation during long-term use.

[0043] Comparative Cases:

[0044] In traditional pultrusion equipment, length control largely relies on manual measurement or single-point limit systems, which are prone to errors in large-scale production. Compared to this embodiment, the traditional approach suffers from significant dimensional fluctuations in the profiles due to the inability to precisely control their length, affecting product consistency. This embodiment achieves precise control of the pultrusion length through a sophisticated automated adjustment and metering positioning system, significantly improving production efficiency and product quality.

[0045] Example 3: Example of automatic clamping control

[0046] This embodiment addresses the problems of unstable clamping and profile deformation in traditional pultrusion equipment. In this embodiment, the clamping mechanism 7 uses a hydraulic cylinder 73 to control the engagement between the upper clamping plate 74 and the forming clamping seat 72, ensuring the profile is stably clamped and kept horizontal during the pultrusion process. The precise control of the hydraulic cylinder 73 makes the movement of the upper clamping plate 74 smoother, preventing deformation or dimensional deviations in the profile due to unstable clamping. This system can automatically adjust the clamping force according to changes in the dimensions of the pultruded profile, ensuring the profile remains under control throughout the entire pultrusion process.

[0047] Materials and data:

[0048] Hydraulic cylinder model: HYD-20-63, maximum working pressure 16MPa, stroke 200mm.

[0049] Upper clamping plate material: made of aluminum alloy (model 6061-T6), which is lightweight and high-strength.

[0050] Forming clamping base: Made of hardened steel, wear-resistant, and enhances clamping accuracy.

[0051] Comparative Cases:

[0052] In traditional pultrusion equipment, the clamping system often relies on mechanical clamping, which is prone to uneven clamping or insufficient clamping force, causing deformation or positional displacement of the profile during pultrusion. This embodiment uses a hydraulic cylinder to control the clamping force, which not only ensures the stability of clamping but also allows for flexible adjustment of the clamping force under different operating conditions, greatly improving the consistency of pultruded profiles and production efficiency.

[0053] Example 4: Example of sliding and return accuracy control

[0054] In this embodiment, a spring 6 is fitted onto the surface of the slide rod 5 to achieve the return function of the pultrusion equipment, and the meshing of the rack 52 and the gear 25 ensures the precise movement of the slide rod 5. During the pultrusion process, the slide rod 5 is subjected to the reaction force of the spring 6, and quickly returns to its original position after completing the pultrusion work, ready for the next use. The design of the spring 6 allows the slide rod 5 to return to its initial position at a constant speed, while the meshing of the rack 52 and the gear 25 ensures that the slide rod 5 will not jam during movement, guaranteeing the smooth operation of the device.

[0055] Materials and data:

[0056] Spring model: Tension Spring, tensile strength: 150N, steel material (alloy steel).

[0057] Material of slide bar 5: High-strength aluminum alloy (6061-T6) is used, which has the characteristics of being lightweight and corrosion resistant.

[0058] Spur 52 and gear 25: Made of heat-treated steel (40Cr) to ensure high precision and durability during meshing.

[0059] Comparative Cases:

[0060] In traditional equipment, sliding mechanisms often use purely mechanical methods for positioning, which can lead to problems such as inaccurate return and jamming, requiring frequent manual adjustments during production. This embodiment utilizes the cooperation of spring 6 and rack 52 to ensure that the slide bar 5 not only returns precisely but also avoids errors caused by insufficient or excessive friction, guaranteeing long-term stable operation of the equipment, reducing the frequency of maintenance and adjustments, and improving production efficiency.

[0061] The working principle of this utility model is as follows: the material is formed by passing through the pultrusion die 12, and then the end of the profile is placed inside the clamping mechanism 7. The upper clamping plate 74 is moved down by controlling the hydraulic cylinder 73 so that the upper clamping plate 74 and the forming clamping seat 72 cooperate to clamp and fix it, and keep the pulled-out profile in a horizontal state. The measuring positioning block 3 is installed according to the required measurement size and fixed by bolts. The motor 15 is started to drive the lead screw 14 to rotate, and then the moving seat 21 is moved to realize the pultrusion work. At the same time, due to the presence of the spring 6, the slide bar 5 is placed on one side of the stroke, and the double screw 24 is rotated to a certain angle and fixed by the meshing of the toothed bar 52 and the gear 25. At this time, the two sliders 4 are close to each other, and the two C-shaped screw sleeves 41 are combined to form a complete screw sleeve. At the same time, the reverse self-locking of the thread is used to keep it fixed.

[0062] When the extrusion head 51 moves to the set area, it will be squeezed by the metering positioning block 3 and slide to one side. At this time, the rack 52 drives the gear 25 to rotate in reverse, the spring 6 is squeezed and stored, and the reverse rotation of the twin screw 24 makes the two sliders 4 separate from each other, so that the rotation of the lead screw 14 cannot drive the moving seat 21 to continue to move, so as to stop the extrusion after reaching the specified length and achieve precise length control.

[0063] After a single use, the control motor 15 rotates in the opposite direction so that the spring 6 keeps the slider 4 in the combined state, and then moves 2 back to the initial position to facilitate the next extrusion operation.

[0064] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A pultruded profile length measuring device, comprising a base (1), characterized in that: A pultrusion die (12) is installed on one side of the top of the machine base (1). Tracks (13) are symmetrically arranged on the upper surface of the machine base (1). A motor (15) is fixed on the side of the machine base (1) away from the pultrusion die (12). A lead screw (14) is rotatably installed on the upper surface of the machine base (1). The lead screw (14) is placed between the two tracks (13). The end of the lead screw (14) is installed on the output end of the motor (15). A movable seat (21) is slidably installed on the surface of the two tracks (13). A clamping mechanism (7) is installed on the top of the movable seat (21). The upper surface of the movable seat (21) is provided with a sliding groove (22), and the center of the lower surface of the movable seat (21) is provided with a through groove (23). The lead screw (14) passes through the through groove (23). The through groove (23) is connected to the interior of the sliding groove (22). A double screw (24) is rotatably installed inside the sliding groove (22). A slider (4) is symmetrically slidably installed inside the through groove (23). The two sliders (4) are respectively screwed onto different thread surfaces of the double screw (24). A C-shaped threaded sleeve (41) is provided at the bottom of the slider (4). The C-shaped threaded sleeve (41) is placed inside the through groove (23). The two C-shaped threaded sleeves (41) are respectively placed on both sides of the lead screw (14). The two C-shaped threaded sleeves (41) are combined to form a threaded sleeve that is compatible with the lead screw (14).

2. The pultruded profile length measuring device according to claim 1, characterized in that: The twin screw (24) passes through one side of the movable seat (21), and a gear (25) is provided at the end of the twin screw (24). A support plate (26) is symmetrically provided on one side of the movable seat (21).

3. The pultruded profile length measuring device according to claim 2, characterized in that: A slide rod (5) is slidably installed between the two support plates (26). The slide rod (5) is horizontally positioned below the gear (25). A toothed bar (52) is provided on the surface of the slide rod (5). The toothed bar (52) meshes with the gear (25).

4. The pultruded profile length measuring device according to claim 3, characterized in that: The slide bar (5) is provided with an extrusion head (51) at one end away from the pultrusion die (12). The upper surface of the machine base (1) is equipped with a metering positioning block (3) by bolts according to the measurement dimensions. The metering positioning block (3) corresponds to the extrusion head (51).

5. The pultruded profile length measuring device according to claim 4, characterized in that: A spring (6) is fitted on the surface of the slide bar (5). The spring (6) is placed between the support plate (26) and the toothed bar (52). The spring (6) is placed on the side of the toothed bar (52) near the pultrusion die (12).

6. The pultruded profile length measuring device according to claim 1, characterized in that: The clamping mechanism (7) includes a frame (71) fixed on the surface of the movable seat (21), a forming clamping seat (72) fixed on the lower inner side of the frame (71), a control hydraulic cylinder (73) fixed on the top of the frame (71), an upper clamping plate (74) installed at the output end of the control hydraulic cylinder (73), and the upper clamping plate (74) and the forming clamping seat (72) clamp the pultruded type.

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