Ultramicro cotton needled felt production equipment and production process thereof

Abstract

The ultra-micro cotton needled felt production equipment comprises a first double-roller conveyor, a pre-pressing mechanism, a gradual change type rolling mechanism, a tensioning roller set, a needling mechanism, an automatic needle removing mechanism, a detection mechanism, a manual needle removing workbench, an oven and a second double-roller conveyor. The automatic needle head removing mechanism is arranged on one side of the output end of the needling mechanism, the detection mechanism is arranged on one side of the output end of the automatic needle head removing mechanism, and the manual needle head removing workbench is arranged on one side of the output end of the detection mechanism. Relatively loose needles in a needled felt are sucked out through the automatic needle removing mechanism, needle residues are preliminarily reduced, the positions of the residual needles are detected and marked through the detection mechanism, clear guidance is provided for manual needle removal, the marked needles are accurately removed through the manual needle removing workbench, and the working efficiency is improved. And baking the needled felt at low temperature by using a baking oven, and removing the color marked by the coating, so that the original appearance of the needled felt is recovered.

Description

Technical Field

[0001] The invention relates to the technical field of needle felt production, and in particular to ultra-fine cotton needle felt production equipment and a production process thereof. Background Art

[0002] In the field of textile, filtration and environmental protection materials, ultra-fine cotton needle felt, as a high-performance fiber composite material, has received extensive attention and application due to its excellent filtration efficiency, good air permeability and reusability. Ultra-fine cotton needle felt is usually made of ultra-fine fibers through special processing. These fibers are interwoven with each other through needle punching technology to form a felt body with a three-dimensional mesh structure, thereby retaining the original excellent properties of the fiber while greatly enhancing the overall strength and durability of the material.

[0003] In the production process of needle felt, there are indeed cases where needles break and may be trapped inside the needle felt. Needles trapped inside the needle felt do need to be removed in a timely manner. Because the presence of needles may have a negative impact on the performance and quality of the needle felt, such as reducing its filtration efficiency, increasing the risk of wear and breakage during use, etc. In addition, if the needle felt is used in direct contact with the human body or in sensitive areas (such as medical, food, etc.), the trapped needles may also pose a safety hazard.

[0004] When the existing needle felt production equipment is in use, there is no mechanism for detecting or removing needles. The needles remaining inside the needle felt cannot be effectively handled, which not only reduces product quality but also may cause safety hazards in subsequent use.

[0005] For example, a basalt fiber needle felt production equipment disclosed in announcement number CN210368179U, the patent mixes basalt and flux in a weight ratio of 1: (0.05-0.1) evenly; adds the evenly mixed raw materials into a resistance furnace, and heats the raw materials to a molten state through the resistance furnace; stretches the molten raw materials into fibers through a centrifuge; collects the fibers through a cotton collector and prepares them into cotton felt of a certain thickness and width; interweaves the fibers through a needle punching machine to prepare a needle punched blank; heats and shapes the needle punched blank through a heating furnace to form a needle punched felt of uniform thickness; cuts the needle punched felt into finished products of a certain size through a longitudinal cutting machine and a transverse cutting machine; and rolls the cut finished products into a certain specification through a winder and packages them.

[0006] Although the basalt fiber needle felt production equipment and its production method have many advantages, there are still some shortcomings in the detection and processing of needles inside the needle felt. Although the needle punching machine can effectively promote fiber interweaving, the needles may wear or break after long-term use and remain in the needle felt. The above-mentioned basalt fiber needle felt production equipment does not mention any mechanism for detecting or removing needles. These residual needles may not only reduce product quality, but also pose a safety hazard to subsequent use.

[0007] Therefore, it is necessary to invent a kind of superfine cotton needle felt production equipment and production process thereof to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a superfine cotton needle felt production device and a production process thereof to solve the problems in the above technology.

[0009] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kind of ultra-fine cotton needle felt production equipment, including a No. 1 double-roller conveyor, a pre-pressing mechanism, a gradual rolling mechanism, a tensioning roller group, a needling mechanism, an automatic needle removal mechanism, a detection mechanism, a manual needle removal workbench, a baking oven and a No. 2 double-roller conveyor, the automatic needle removal mechanism is arranged on one side of the output end of the needling mechanism, the detection mechanism is arranged on one side of the output end of the automatic needle removal mechanism, the manual needle removal workbench is arranged on one side of the output end of the detection mechanism, the baking oven is arranged on one side of the output end of the manual needle removal workbench, the automatic needle removal mechanism includes an automatic needle removal workbench, the top of the automatic needle removal workbench is fixedly connected to a No. 1 gantry, the top of the No. 1 gantry is equipped with a No. 1 electric push rod, and a loading plate is arranged under the No. 1 gantry. , an electromagnet is installed at the bottom of the loading plate, the bottom end of the No. 1 electric push rod passes through the No. 1 gantry and is fixedly connected to the top of the loading plate, both sides of the automatic needle removal workbench are rotatably connected to limited pressure rollers, the detection mechanism includes a detection workbench, the top of the detection workbench is fixedly connected with a No. 2 gantry, and a bidirectional lead screw is rotatably connected between the two ends of the No. 2 gantry, and two loading blocks are slidably connected below the No. 2 gantry, and the two loading blocks are respectively transmission-connected to the two ends of the bidirectional lead screw, a driving motor is installed on one side of the No. 2 gantry, and one end of the bidirectional lead screw is transmission-connected to the driving motor, a No. 2 electric push rod is installed at the bottom of the loading block, and an automatic sprayer is installed at the bottom of the No. 2 electric push rod, and a metal detector is installed in the middle of the top of the detection workbench, and the automatic sprayer is located above the metal detector.

[0010] The automatic removal of loose needles by electromagnets, combined with the precise marking of metal detectors and automatic sprayers, greatly improves the efficiency and accuracy of subsequent manual needle removal and reduces the complexity and time cost of manual operations.

[0011] Preferably, the acupuncture mechanism includes an acupuncture workbench, a No. 3 gantry is fixedly connected to the top of the acupuncture workbench, a No. 3 electric push rod is installed on the top of the No. 3 gantry, a No. 1 pressure plate is arranged below the No. 3 gantry, and the bottom end of the No. 3 electric push rod passes through the No. 3 gantry and is fixedly connected to the top of the No. 1 pressure plate.

[0012] The No. 1 pressing plate is pushed by the No. 3 electric push rod to perform reciprocating motion up and down, thereby driving the puncture needle to repeatedly puncture the needle felt.

[0013] Preferably, a pricking needle is installed at the bottom of the No. 1 pressing plate, and a supporting plate is installed on the top of the acupuncture workbench. The supporting plate is arranged directly below the No. 1 pressing plate, and a puncture hole is opened on the surface of the supporting plate, and the puncture hole matches the pricking needle.

[0014] The needles match the puncture holes on the support plate, ensuring that the needles can penetrate the needle felt smoothly and preventing the needles from being damaged due to collision.

[0015] Preferably, the tensioning roller group is arranged on one side of the input end of the acupuncture mechanism, and the gradual rolling mechanism is arranged on one side of the input end of the tensioning roller group.

[0016] Tensioning the needle felt embryo body by the tensioning roller group is beneficial to improving the effect of subsequent needling operations.

[0017] Preferably, the gradual rolling mechanism includes a fixed frame, and multiple groups of No. 1 squeezing rollers are rotatably connected inside the fixed frame. The multiple groups of No. 1 squeezing rollers are distributed in a linear array, and the roller spacing of the multiple groups of No. 1 squeezing rollers decreases from left to right.

[0018] The roller spacing of multiple groups of No. 1 squeezing rollers is gradually reduced to achieve gradual compaction of the needle felt, which not only ensures uniformity but also avoids over-compaction, thereby improving the overall quality of the needle felt.

[0019] Preferably, the pre-pressing mechanism is arranged on one side of the input end of the gradual rolling mechanism, and the pre-pressing mechanism includes a pre-pressing workbench, a No. 4 gantry is fixedly connected to the top of the pre-pressing workbench, a No. 4 electric push rod is installed on the top of the No. 4 gantry, a No. 2 pressure plate is arranged under the No. 4 gantry, and the bottom end of the No. 4 electric push rod passes through the No. 4 gantry and is fixedly connected to the top of the No. 2 pressure plate.

[0020] Preferably, a plurality of No. 2 squeezing rollers are rotatably connected to the bottom of the No. 2 pressing plate, and the plurality of No. 2 squeezing rollers are distributed in a linear array.

[0021] The design of multiple No. 2 squeezing rollers can compact the needle felt more evenly, while reducing the friction between the pressing plate and the needle felt, protecting the surface of the needle felt from damage.

[0022] Preferably, the No. 1 double-roller conveyor is arranged on the input end side of the pre-pressing mechanism, and the No. 2 double-roller conveyor is arranged on the output end side of the baking oven, and the roller spacing of the No. 1 double-roller conveyor is greater than the roller spacing of the No. 2 double-roller conveyor.

[0023] The needle felt is continuously conveyed by pulling it through the No. 1 double roller conveyor and the No. 2 double roller conveyor.

[0024] In addition, the present invention also provides a production process of ultra-fine cotton needle felt, comprising the following process steps:

[0025] Step 1: The needle felt embryo is conveyed by a No. 1 double-roller conveyor. When the needle felt embryo moves to the pre-pressing mechanism, the No. 2 pressing plate is pushed downward by a No. 4 electric push rod until the No. 2 squeezing roller contacts the needle felt embryo and applies a certain pressure, but does not affect the conveyance of the needle felt embryo. The needle felt embryo is preliminarily compacted by the pre-pressing mechanism;

[0026] Step 2: The pre-compacted needle felt embryo body is passed between multiple groups of No. 1 squeezing rollers of the gradual rolling mechanism. Since the roller spacing of the multiple groups of No. 1 squeezing rollers is designed to decrease in sequence, the needle felt embryo body is gradually compacted during the conveying process, which is convenient for the subsequent needling operation;

[0027] Step 3: Pass the compacted needle felt embryo around the tension roller group, and use the tension roller group to tension and straighten the needle felt embryo, which is beneficial to improve the subsequent needling effect;

[0028] Step 4: Pass the tensioned needle felt embryo through the needle puncture mechanism, and drive the No. 1 pressing plate to move up and down by the No. 3 electric push rod, so as to drive the needle to repeatedly puncture the needle felt embryo, so that the fibers on the needle felt embryo are more tightly interwoven;

[0029] Step 5: Pass the punctured needle felt through the automatic needle removal mechanism, push the loading plate through the No. 1 electric push rod to drive the electromagnet to a proper height, power the electromagnet, and use the strong magnetic attraction generated by the electromagnet to suck out the needles inside the needle felt. During this process, the limiting rollers on both sides of the automatic needle removal workbench can limit the needle felt to prevent the needle felt from floating up and down;

[0030] Step 6, then the needle felt is passed through the detection mechanism, and the needles that have not been removed cleanly inside the needle felt are detected by the metal detector. When the needle is detected, the bidirectional lead screw is driven by the driving motor to rotate, driving the loading block and the automatic sprayer at the bottom thereof to move to the needle, and the height of the automatic sprayer is adjusted by the No. 2 electric push rod. The automatic sprayer sprays low-temperature thermosensitive paint on the surface of the needle felt to display the location of the needle, so as to facilitate the subsequent manual removal of the needle;

[0031] Step 7, when the needle felt passes through the top of the manual needle removal workbench, the operator uses the spray mark to quickly find the needle and manually remove it. Since the needle is preliminarily removed by the automatic needle removal mechanism in advance, the pressure of manual operation is reduced;

[0032] Step 8: Pass the needle felt after the needles are removed through a baking oven, and bake the needle felt at a low temperature in the baking oven, so that the low-temperature heat-sensitive coating attached to the surface of the felt loses its color after being heated, and finally the needle felt is conveyed out through the No. 2 double-roller conveyor.

[0033] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0034] 1. The combination of automatic needle removal mechanism, detection mechanism, manual needle removal workbench and baking oven can effectively remove the needles inside the needle felt. The automatic needle removal mechanism sucks out the loose needles through the electromagnet, which initially reduces the residual needles; while the detection mechanism marks and displays the position of the residual needles through the precise coordination of the metal detector and the automatic sprayer, providing clear guidance for manual needle removal, thereby greatly improving the efficiency and accuracy of needle removal; the baking oven adopts low-temperature baking method, which can effectively remove the color of the paint mark, thereby restoring the original appearance of the needle felt.

[0035] 2. The combined use of the pre-pressing mechanism, the gradual rolling mechanism and the needle punching mechanism ensures that the needle felt can be processed finely, evenly and stably throughout the entire production process from raw materials to finished products, thereby improving the overall quality of the needle felt. The pre-pressing mechanism provides a stable foundation for subsequent processes by initially compacting the needle felt embryo; the gradual rolling mechanism gradually compacts the needle felt through multiple groups of No. 1 squeezing rollers with gradually decreasing roller spacing; the needle punching mechanism enhances the interweaving and bonding between fibers through repeated punctures, thereby improving the strength and stability of the needle felt. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0037] Figure 2 It is a schematic diagram of the overall structure of the second viewing angle of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the automatic needle removal mechanism of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention;

[0040] Figure 5 It is a structural schematic diagram of the acupuncture mechanism of the present invention;

[0041] Figure 6It is a structural cross-sectional view of the gradual rolling mechanism of the present invention;

[0042] Figure 7 It is a structural schematic diagram of the pre-pressing mechanism of the present invention.

[0043] Description of reference numerals:

[0044] 1. No. 1 double roller conveyor; 2. Pre-pressing mechanism; 3. Gradual roller pressing mechanism; 4. Tensioning roller group; 5. Needle puncture mechanism; 6. Automatic needle removal mechanism; 7. Testing mechanism; 8. Manual needle removal workbench; 9. Baking oven; 10. No. 2 double roller conveyor; 11. Automatic needle removal workbench; 12. No. 1 gantry; 13. No. 1 electric push rod; 14. Loading plate; 15. Electromagnet; 16. Limiting roller; 17. Testing workbench; 18. No. 2 gantry; 19. Two-way Lead screw; 20, loading block; 21, driving motor; 22, No. 2 electric push rod; 23, automatic spraying machine; 24, metal detector; 25, acupuncture workbench; 26, No. 3 gantry; 27, No. 3 electric push rod; 28, No. 1 pressure plate; 29, puncture needle; 30, support plate; 31, puncture hole; 32, fixed frame; 33, No. 1 extrusion roller; 34, pre-pressing workbench; 35, No. 4 gantry; 36, No. 4 electric push rod; 37, No. 2 pressure plate; 38, No. 2 extrusion roller. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] The present invention provides Figure 1-7The ultra-fine cotton needle felt production equipment and its production process shown in the figure include a No. 1 double-roller conveyor 1, a pre-pressing mechanism 2, a gradual rolling mechanism 3, a tensioning roller group 4, a needle puncture mechanism 5, an automatic needle removal mechanism 6, a detection mechanism 7, a manual needle removal workbench 8, a baking oven 9 and a No. 2 double-roller conveyor 10, the automatic needle removal mechanism 6 is arranged on the output end side of the needle puncture mechanism 5, the detection mechanism 7 is arranged on the output end side of the automatic needle removal mechanism 6, the manual needle removal workbench 8 is arranged on the output end side of the detection mechanism 7, and the baking oven 9 is arranged on the output end side of the manual needle removal workbench 8. The automatic needle removal mechanism 6 includes an automatic needle removal workbench 11, and the top of the automatic needle removal workbench 11 is fixedly connected to a No. 1 gantry 12, the top of the No. 1 gantry 12 is equipped with a No. 1 electric push rod 13, and a loading plate 14 is arranged below the No. 1 gantry 12, and the bottom of the loading plate 14 is equipped with Electromagnet 15, the bottom end of No. 1 electric push rod 13 passes through No. 1 gantry 12 and is fixedly connected to the top of loading plate 14, both sides of automatic needle removal workbench 11 are rotatably connected to limited pressure rollers 16, the detection mechanism 7 includes a detection workbench 17, the top of the detection workbench 17 is fixedly connected to No. 2 gantry 18, and a bidirectional lead screw 19 is rotatably connected between the two ends of No. 2 gantry 18, and two loading blocks 20 are slidably connected below the No. 2 gantry 18, and the two loading blocks 20 are respectively connected to the two ends of the bidirectional lead screw 19 for transmission, a driving motor 21 is installed on one side of the No. 2 gantry 18, and one end of the bidirectional lead screw 19 is connected to the driving motor 21 for transmission, a No. 2 electric push rod 22 is installed at the bottom of the loading block 20, and an automatic sprayer 23 is installed at the bottom of the No. 2 electric push rod 22, a metal detector 24 is installed in the middle of the top of the detection workbench 17, and the automatic sprayer 23 is located above the metal detector 24.

[0047] In one aspect of the present embodiment, the acupuncture mechanism 5 includes a acupuncture workbench 25, a No. 3 gantry 26 is fixedly connected to the top of the acupuncture workbench 25, a No. 3 electric push rod 27 is installed on the top of the No. 3 gantry 26, a No. 1 pressing plate 28 is arranged below the No. 3 gantry 26, the bottom end of the No. 3 electric push rod 27 passes through the No. 3 gantry 26 and is fixedly connected to the top of the No. 1 pressing plate 28, a pricking needle 29 is installed at the bottom of the No. 1 pressing plate 28, a support plate 30 is installed on the top of the acupuncture workbench 25, the support plate 30 is arranged directly below the No. 1 pressing plate 28, a puncture hole 31 is opened on the surface of the support plate 30, and the puncture hole 31 matches the pricking needle 29, a tensioning roller group 4 is arranged on the input end side of the acupuncture mechanism 5, a gradual rolling mechanism 3 is arranged on the input end side of the tensioning roller group 4, and the gradual rolling mechanism 3 includes a fixed frame 32, and a plurality of groups of No. 1 squeezing rollers 33 are rotatably connected inside the fixed frame 32, and a plurality of groups The No. 1 squeezing roller 33 is distributed in a linear array, and the roller spacing of multiple groups of No. 1 squeezing rollers 33 decreases from left to right. The pre-pressing mechanism 2 is arranged on the input end side of the gradual rolling mechanism 3. The pre-pressing mechanism 2 includes a pre-pressing workbench 34, and a No. 4 gantry 35 is fixedly connected to the top of the No. 4 gantry 35. A No. 4 electric push rod 36 is installed on the top of the No. 4 gantry 35. A No. 2 pressing plate 37 is arranged below the No. 4 gantry 35. The bottom end of the No. 4 electric push rod 36 passes through the No. 4 gantry 35 and is fixedly connected to the top of the No. 2 pressing plate 37. A plurality of No. 2 squeezing rollers 38 are rotatably connected to the bottom of the No. 2 pressing plate 37. The plurality of No. 2 squeezing rollers 38 are distributed in a linear array, the No. 1 double-roller conveyor 1 is arranged on the input end side of the pre-pressing mechanism 2, and the No. 2 double-roller conveyor 10 is arranged on the output end side of the baking oven 9. The roller spacing of the No. 1 double-roller conveyor 1 is greater than the roller spacing of the No. 2 double-roller conveyor 10.

[0048] In addition, the present invention also provides a production process of ultra-fine cotton needle felt, comprising the following process steps:

[0049] Step 1: The needle felt embryo is conveyed by the No. 1 double-roller conveyor 1. When the needle felt embryo moves to the pre-pressing mechanism 2, the No. 2 pressing plate 37 is pushed downward by the No. 4 electric push rod 36 until the No. 2 squeezing roller 38 contacts the needle felt embryo and applies a certain pressure, but does not affect the conveyance of the needle felt embryo. The needle felt embryo is preliminarily compacted by the pre-pressing mechanism 2;

[0050] Step 2: The pre-compacted needle felt embryo body is passed through multiple groups of No. 1 squeezing rollers 33 of the gradual rolling mechanism 3. Since the roller spacing of the multiple groups of No. 1 squeezing rollers 33 is designed to decrease in sequence, the needle felt embryo body is gradually compacted during the conveying process, which is convenient for the subsequent needling operation;

[0051] Step 3: Pass the compacted needle felt embryo around the tension roller group 4, and use the tension roller group 4 to tension and straighten the needle felt embryo, which is beneficial to improve the subsequent acupuncture effect;

[0052] Step 4: Pass the tensioned needle felt embryo through the needle mechanism 5, and drive the No. 1 pressing plate 28 to move up and down by the No. 3 electric push rod 27, so as to drive the needle 29 to repeatedly puncture the needle felt embryo, so that the fibers on the needle felt embryo are more closely interwoven;

[0053] Step 5, the punctured needle felt is passed through the automatic needle removal mechanism 6, and the loading plate 14 is pushed by the No. 1 electric push rod 13 to drive the electromagnet 15 to descend to an appropriate height, and the electromagnet 15 is powered, and the strong magnetic attraction generated by the electromagnet 15 is used to suck out the needles inside the needle felt. In this process, the limiting rollers 16 on both sides of the automatic needle removal workbench 11 can limit the needle felt to prevent the needle felt from floating up and down;

[0054] Step 6, then the needle felt is passed through the detection mechanism 7, and the metal detector 24 is used to detect the needles that have not been removed cleanly inside the needle felt. When the needle is detected, the bidirectional lead screw 19 is driven to rotate by the driving motor 21, driving the loading block 20 and the automatic sprayer 23 at the bottom thereof to move to the needle, and the height of the automatic sprayer 23 is adjusted by the second electric push rod 22, and the low-temperature thermosensitive paint is sprayed on the surface of the needle felt by the automatic sprayer 23 to display the location of the needle, so as to facilitate the subsequent manual removal of the needle;

[0055] Step 7, when the needle felt passes the top of the manual needle removal workbench 8, the operator uses the spray mark to quickly find the needle and manually remove it. Since the needle is preliminarily removed by the automatic needle removal mechanism 6 in advance, the pressure of manual operation is reduced;

[0056] Step 8, pass the needle felt after the needles are removed through the baking oven 9, and bake the needle felt at low temperature in the baking oven 9, so that the low-temperature heat-sensitive paint attached to the surface of the felt loses color after being heated, and finally the needle felt is conveyed out through the No. 2 double-roller conveyor 10.

[0057] Working principle of the present invention:

[0058] Refer to the instruction manual Figure 1-7 When using the present invention, firstly, the needle felt embryo to be processed is placed at the starting end of the No. 1 double-roller conveyor 1, and the No. 1 double-roller conveyor 1 is started to convey the needle felt embryo to the pre-pressing mechanism 2. At the pre-pressing mechanism 2, the No. 2 pressing plate 37 is driven down by the No. 4 electric push rod 36, so that the No. 2 squeezing roller 38 contacts the needle felt embryo and applies a certain pressure to perform preliminary compaction;

[0059] The pre-pressed needle felt embryo is further transported to the gradual rolling mechanism 3, and the needle felt embryo is gradually compacted by a plurality of groups of first squeezing rollers 33 with gradually decreasing roller spacing, in preparation for the subsequent needling operation.

[0060] The compacted needle felt embryo passes through the tension roller group 4, and the tension roller keeps the needle felt embryo in a taut state, which is beneficial to the needling operation.

[0061] The tensioned needle felt embryo is sent into the needle mechanism 5, and the third electric push rod 27 drives the first pressing plate 28 to move up and down, driving the needle 29 to repeatedly puncture the needle felt embryo to enhance the interweaving of fibers;

[0062] The needle felt after needle punching is sent to the automatic needle removal mechanism 6, the No. 1 electric push rod 13 pushes the loading plate 14 down to a proper height, the electromagnet 15 is energized to generate magnetic attraction, and the loose needles inside the needle felt are sucked out. At the same time, the limiting pressure roller 16 ensures that the needle felt remains stable during the needle removal process;

[0063] Then, the needle felt is passed through the detection mechanism 7, and the metal detector 24 is used to detect whether there are needles left inside the needle felt. If a needle is detected, the driving motor 21 drives the bidirectional screw 19 to rotate, driving the loading block 20 and the automatic sprayer 23 to move to the needle position, and the second electric push rod 22 adjusts the height of the sprayer, and the automatic sprayer 23 sprays low-temperature thermosensitive paint on the surface of the needle felt to mark the needle position;

[0064] Next, the needle felt is transported to the manual needle removal workbench 8, where the operator quickly finds and removes the remaining needles according to the paint marks. Since the needles are preliminarily removed by the automatic needle removal mechanism 6 in advance, the pressure of manual operation is reduced;

[0065] The needle felt with the needles removed enters the baking oven 9, where it is baked at low temperature, so that the low-temperature heat-sensitive coating attached to the surface of the felt loses its color after being heated. Finally, the processed needle felt is conveyed out of the equipment by the No. 2 double-roller conveyor 10, ready for subsequent packaging or further processing.

Claims

1. An ultra-fine cotton needle felt production equipment, comprising a No. 1 double roller conveyor (1), a pre-pressing mechanism (2), a gradual rolling mechanism (3), a tensioning roller group (4), a needle punching mechanism (5), an automatic needle removal mechanism (6), a detection mechanism (7), a manual needle removal workbench (8), a baking oven (9) and a No. 2 double roller conveyor (10), characterized in that: The automatic needle removal mechanism (6) is arranged on one side of the output end of the acupuncture mechanism (5); the detection mechanism (7) is arranged on one side of the output end of the automatic needle removal mechanism (6); the manual needle removal workbench (8) is arranged on one side of the output end of the detection mechanism (7); the baking oven (9) is arranged on one side of the output end of the manual needle removal workbench (8); the automatic needle removal mechanism (6) comprises an automatic needle removal workbench (11); a No. 1 gantry (12) is fixedly connected to the top of the automatic needle removal workbench (11); a No. 1 electric push rod (13) is installed on the top of the No. 1 gantry (12); a loading plate (14) is arranged below the No. 1 gantry (12); an electromagnet (15) is installed at the bottom of the loading plate (14); the bottom end of the No. 1 electric push rod (13) passes through the No. 1 gantry (12) and is fixedly connected to the top of the loading plate (14); both sides of the automatic needle removal workbench (11) are The detection mechanism (7) comprises a detection workbench (17), a No. 2 gantry (18) is fixedly connected to the top of the detection workbench (17), a bidirectional lead screw (19) is rotatably connected between the two ends of the No. 2 gantry (18), two loading blocks (20) are slidably connected below the No. 2 gantry (18), the two loading blocks (20) are respectively connected to the two ends of the bidirectional lead screw (19), a driving motor (21) is installed on one side of the No. 2 gantry (18), one end of the bidirectional lead screw (19) is connected to the driving motor (21), a No. 2 electric push rod (22) is installed at the bottom of the loading block (20), an automatic spraying machine (23) is installed at the bottom of the No. 2 electric push rod (22), a metal detector (24) is installed in the middle of the top of the detection workbench (17), and the automatic spraying machine (23) is located above the metal detector (24).

2. The ultra-fine cotton needle felt production equipment according to claim 1, characterized in that: The acupuncture mechanism (5) comprises an acupuncture workbench (25), the top of the acupuncture workbench (25) is fixedly connected to a No. 3 gantry (26), the top of the No. 3 gantry (26) is equipped with a No. 3 electric push rod (27), a No. 1 pressing plate (28) is arranged below the No. 3 gantry (26), and the bottom end of the No. 3 electric push rod (27) passes through the No. 3 gantry (26) and is fixedly connected to the top of the No. 1 pressing plate (28).

3. The ultra-fine cotton needle felt production equipment according to claim 2, characterized in that: A pricking needle (29) is installed at the bottom of the No. 1 pressing plate (28), and a supporting plate (30) is installed on the top of the acupuncture workbench (25). The supporting plate (30) is arranged directly below the No. 1 pressing plate (28), and a puncture hole (31) is opened on the surface of the supporting plate (30), and the puncture hole (31) matches the pricking needle (29).

4. The ultra-fine cotton needle felt production equipment according to claim 1, characterized in that: The tensioning roller group (4) is arranged on one side of the input end of the needling mechanism (5), and the gradual rolling mechanism (3) is arranged on one side of the input end of the tensioning roller group (4).

5. The ultra-fine cotton needle felt production equipment according to claim 1, characterized in that: The gradual rolling mechanism (3) comprises a fixed frame (32), wherein a plurality of groups of No. 1 squeezing rollers (33) are rotatably connected inside the fixed frame (32), the plurality of groups of No. 1 squeezing rollers (33) are distributed in a linear array, and the roller spacing of the plurality of groups of No. 1 squeezing rollers (33) decreases from left to right.

6. The ultra-fine cotton needle felt production equipment according to claim 1, characterized in that: The pre-pressing mechanism (2) is arranged at one side of the input end of the gradual rolling mechanism (3), and the pre-pressing mechanism (2) comprises a pre-pressing workbench (34), the top of the pre-pressing workbench (34) is fixedly connected to a No. 4 gantry (35), the top of the No. 4 gantry (35) is installed with a No. 4 electric push rod (36), a No. 2 pressing plate (37) is arranged below the No. 4 gantry (35), and the bottom end of the No. 4 electric push rod (36) passes through the No. 4 gantry (35) and is fixedly connected to the top of the No. 2 pressing plate (37).

7. The ultra-fine cotton needle felt production equipment according to claim 6, characterized in that: The bottom of the No. 2 pressing plate (37) is rotatably connected to a plurality of No. 2 squeezing rollers (38), and the plurality of No. 2 squeezing rollers (38) are distributed in a linear array.

8. The ultra-fine cotton needle felt production equipment according to claim 1, characterized in that: The No. 1 double-roller conveyor (1) is arranged on the input end side of the pre-pressing mechanism (2), and the No. 2 double-roller conveyor (10) is arranged on the output end side of the baking oven (9), and the roller spacing of the No. 1 double-roller conveyor (1) is greater than the roller spacing of the No. 2 double-roller conveyor (10).

9. A process for producing ultra-fine cotton needle felt, using an ultra-fine cotton needle felt production device according to any one of claims 1 to 8, characterized in that: The specific process steps include: Step 1: The needle felt embryo is conveyed by a No. 1 double-roller conveyor (1). When the needle felt embryo moves to the pre-pressing mechanism (2), the No. 2 pressing plate (37) is pushed downward by a No. 4 electric push rod (36) until the No. 2 squeezing roller (38) contacts the needle felt embryo and applies a certain pressure, but does not affect the conveyance of the needle felt embryo. The needle felt embryo is preliminarily compacted by the pre-pressing mechanism (2); Step 2: passing the pre-compacted needle felt embryo through multiple groups of No. 1 squeezing rollers (33) of the gradual rolling mechanism (3). Since the roller spacings of the multiple groups of No. 1 squeezing rollers (33) are designed to decrease in sequence, the needle felt embryo is gradually compacted during the conveying process, which is convenient for the subsequent needling operation. Step 3: Pass the compacted needle felt embryo around the tension roller group (4), and use the tension roller group (4) to tension and straighten the needle felt embryo, which is beneficial to improving the subsequent acupuncture effect; Step 4: Pass the tensioned needle felt embryo through the needle puncture mechanism (5), and drive the No. 1 pressing plate (28) to move up and down by the No. 3 electric push rod (27), so as to drive the needle (29) to repeatedly puncture the needle felt embryo, so that the fibers on the needle felt embryo are more closely interwoven; Step 5: The punctured needle felt is passed through the automatic needle removal mechanism (6), and the loading plate (14) is pushed by the No. 1 electric push rod (13) to drive the electromagnet (15) to descend to an appropriate height, and the electromagnet (15) is powered, and the needles inside the needle felt are sucked out by the strong magnetic attraction generated by the electromagnet (15). During this process, the limiting rollers (16) on both sides of the automatic needle removal workbench (11) can limit the needle felt to prevent the needle felt from floating up and down; Step 6, the needle felt is then passed through the detection mechanism (7), and the needles that have not been removed cleanly inside the needle felt are detected by the metal detector (24). When the needle is detected, the bidirectional lead screw (19) is driven to rotate by the driving motor (21), driving the loading block (20) and the automatic sprayer (23) at the bottom thereof to move to the needle, and the height of the automatic sprayer (23) is adjusted by the second electric push rod (22). The low-temperature thermosensitive coating is sprayed on the surface of the needle felt by the automatic sprayer (23) to display the location of the needle, so as to facilitate the subsequent manual removal of the needle; Step 7, when the needle felt passes through the top of the manual needle removal workbench (8), the operator uses the spray mark to quickly find the needle and manually remove it. Since the needle is preliminarily removed by the automatic needle removal mechanism (6) in advance, the pressure of manual operation is reduced; Step 8: Pass the needle felt after the needles are removed through a baking oven (9), and bake the needle felt at a low temperature in the baking oven (9), so that the low-temperature heat-sensitive paint attached to the surface of the felt loses its color after being heated, and finally the needle felt is conveyed out through the No. 2 double-roller conveyor (10).

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