Card with automatic perception of neps position

Abstract

A carding machine with automatic sensing of neps position function, comprising a feeding curtain; a group of feed rollers arranged between the frame wallboards, a fiber feeding transfer roller located on the right side of the feed roller group, a transfer roller located between the lower right side of the feed roller group and the lower left side of the fiber feeding transfer roller, a licker-in roller located on the right side of the fiber feeding transfer roller, a breast cylinder located on the right side of the licker-in roller, a fiber transfer roller located on the right side of the breast cylinder, a main cylinder located on the right upper side of the fiber transfer roller, an upper and a lower doffer located on the right side of the main cylinder, an upper inner trash roller located on the right side of the upper doffer, an upper outer trash roller located on the right side of the upper inner trash roller, a lower inner trash roller located on the right side of the lower doffer, a lower outer trash roller located on the right side of the lower inner trash roller, an upper fiber stripper roller located on the right side of the upper outer trash roller, a lower fiber stripper roller located on the right side of the lower outer trash roller, an upper output curtain and a lower output curtain. Avoid damage to the card clothing on the cylinder surface and ensure the quality of the final non-woven product.

Description

Technical Field

[0001] This invention belongs to the field of nonwoven machinery technology, specifically relating to a carding machine with an automatic cotton knot position sensing function. Background Technology

[0002] The aforementioned carding machine, also known as a carding machine, is an important part of a complete set of nonwoven product production equipment. As is known in the industry, a complete set of nonwoven product production lines, such as nonwoven fabrics or nonwoven felts, mainly includes a bale opener, a cotton box, a carding machine, a web laying machine, and a needle punching machine (a hydroentanglement machine can also be used). The function of the carding machine is to card the nonwoven fibers opened by the opener in the preceding station. After carding, the fiber output mechanism, which belongs to the carding machine's structural system, is conveyed to the subsequent web laying machine to lay up the nonwoven fiber web of the required weight, and then it is supplied to the aforementioned needle punching machine or hydroentanglement machine for needle punching or hydroentanglement.

[0003] Numerous technical information on carding machines, which fall under the category of nonwoven machinery, can be found in publicly available Chinese patent documents. Representative examples include CN206089904U (carding machine) and CN202466005U (nonwoven carding machine), etc. More representative examples include the "nonwoven carding machine" recommended by CN206109623U and the "pure cotton roller carding machine" provided by CN113046866A.

[0004] As is well known in the industry, nonwoven fibers typically contain undesirable but objectively unavoidable neps. After being opened by the opening machine in the preceding process of the carding machine, the fibers sequentially enter the carding machine's structural system through the cotton box, feeding curtain, feeding roller (i.e., "feeding roller"), feeding transfer roller, and are then carded by the primary cylinder (also known as the "licker-in roller") and the breast cylinder. After being carded by the upper and lower doffers, they are fed to the aforementioned fiber output mechanism, which then transports them to the web-laying machine. If the aforementioned neps cannot be effectively eliminated, they will be difficult or even impossible to loosen during the entire carding chain process. This will affect the carding cloth on the surface of the rollers, damaging the carding cloth, and will also seriously affect the quality of needle punching or hydroentangling and the final nonwoven product, such as making the nonwoven fabric or nonwoven felt a defective product.

[0005] Current methods primarily rely on a passive approach, such as visual inspection by workers at the aforementioned feed curtain on the production line. If knots are found, they are manually removed. However, experience has shown that relying solely on workers to observe and remove knots from fibers is insufficient to achieve the industry's desired results. Visual inspection is often affected by knot size; large knots may be picked out, but numerous small knots mixed within normal fibers go undetected. Furthermore, it puts workers under high stress, hindering a relaxed working environment. The effectiveness of knot detection is also related to the worker's experience, sense of responsibility, and emotional state.

[0006] Based on the existing technology, it is of positive significance to explore a scientific method for effectively and accurately inspecting the cotton knots of fibers opened by the opener before they enter the carding chain of the carding machine. The technical solution to be introduced below is produced in this context. Summary of the Invention

[0007] The objective of this invention is to provide a carding machine with an automatic nipple-sensing function that helps to automatically and accurately identify nipples in nonwoven fibers fed by a feeding curtain, and allows online operators to remove the nipples while the feeding curtain is temporarily stopped, thereby avoiding damage to the carding cloth on the roller surface and ensuring the quality of the final nonwoven product.

[0008] The objective of this invention is achieved as follows: a carding machine with an automatic nipple sensing function, comprising a feed curtain; a feed roller assembly rotatably disposed between a pair of face-to-face frame wall plates; a fiber feed transfer roller located to the right of the feed roller assembly; a transfer roller located between the lower right side of the feed roller assembly and the lower left side of the fiber feed transfer roller; a licker-in roller located to the right of the fiber feed transfer roller; a breast cylinder located slightly below the right side of the licker-in roller; a fiber transfer roller located to the right of the breast cylinder; a main carding roller located above the right side of the fiber transfer roller; an upper doffer located above the right side of the main carding roller; a lower doffer located below the right side of the main carding roller; an upper inner scattering roller located to the right of the upper doffer; an upper outer scattering roller located to the right of the upper inner scattering roller; and a lower inner scattering roller located to the right of the lower doffer. The machine comprises a scrambling roller, a lower outer scrambling roller located to the right of the lower inner scrambling roller, an upper fiber stripping roller located to the right of the upper outer scrambling roller, a lower fiber stripping roller located to the right of the lower outer scrambling roller, an upper output curtain, and a lower output curtain. The left end of the upper output curtain extends to the left below the upper fiber stripping roller, the upper outer scrambling roller, and the upper inner scrambling roller, while the left end of the lower output curtain extends to the left below the lower fiber stripping roller, the lower outer scrambling roller, and the lower inner scrambling roller. The upper output curtain is an inclined curtain and is located above the lower output curtain, while the lower output curtain is a flat curtain. The machine is characterized by a nipple sensing pressure roller located above the right end of the feed curtain for sensing nipples in the fibers passing through the feed curtain. The nipple sensing pressure roller is rotatably supported between the face-to-face frame wall plates.

[0009] In a specific embodiment of the present invention, a cotton nip sensing roller bearing seat is provided at both the front and rear ends of the cotton nip sensing roller. A cotton nip sensing roller shaft is fixed on the cotton nip sensing roller bearing seat. The cotton nip sensing roller shaft extends outside the cotton nip sensing roller and is rotatably supported on a cotton nip sensing roller support seat. The cotton nip sensing roller support seat is fixed to the frame wall plate. The middle part of the cotton nip sensing roller corresponds to the upper right end of the feeding curtain. In the cotton nip sensing roller cavity in the middle part of the cotton nip sensing roller, multiple groups are arranged at intervals, and each group has multiple pressure signal acquisition elements distributed at intervals. Each pressure signal acquisition element is led to the outside and electrically connected to an external electrical controller through a pressure signal acquisition element lead wire.

[0010] In another specific embodiment of the present invention, in the complex array of pressure signal acquisition elements, each array of pressure signal acquisition elements is fixedly spaced circumferentially around the cavity wall of the cotton knot sensing pressure roller cavity of the cotton knot sensing pressure roller.

[0011] In another specific embodiment of the present invention, the fixing method of each group of pressure signal acquisition elements being fixed at intervals around the circumferential direction of the cavity wall of the cotton knot sensing pressure roller cavity of the cotton knot sensing pressure roller is embedding or bonding.

[0012] In another specific embodiment of the present invention, the nipple sensing roller shaft is configured with a nipple sensing roller shaft cavity communicating with the nipple sensing roller cavity, and the pressure signal acquisition element lead wire of the pressure signal acquisition element is led to the outside through the nipple sensing roller shaft cavity to be electrically connected to an external electrical controller.

[0013] In another specific embodiment of the present invention, a conductive slip ring is provided on the cotton nip sensing pressure roller shaft. The conductive slip ring shaft is fixed to the cotton nip sensing pressure roller shaft. The pressure signal acquisition element lead wire of the pressure signal acquisition element is led out to the outside through the conductive slip ring lead wire of the conductive slip ring and electrically connected to the external electrical controller.

[0014] In a further specific embodiment of the present invention, the pressure signal acquisition element is a pressure sensor.

[0015] In a further specific embodiment of the present invention, a licker-in roller work roller and a licker-in roller stripping roller are arranged in pairs at intervals at the upper part of the licker-in roller along its length direction. The licker-in roller work roller and the licker-in roller stripping roller cooperate with each other and are rotatably supported between a pair of face-to-face frame wall plates. A main carding roller work roller and a main carding roller stripping roller are arranged in pairs at intervals at the upper part of the main carding roller along its length direction. The main carding roller work roller and the main carding roller stripping roller cooperate with each other and are rotatably supported between a pair of face-to-face frame wall plates.

[0016] In yet another specific embodiment of the present invention, the feeding roller assembly includes a pair of upper feeding rollers and a pair of lower feeding rollers, which are vertically aligned and rotatably supported between the pair of face-to-face frame wall plates. The nonwoven fibers fed by the feeding curtain pass between the pair of upper feeding rollers and the pair of lower feeding rollers.

[0017] In yet another specific embodiment of the present invention, a triangular region is formed between the upper part of the licker roller and the cylinder in the longitudinal direction, and a fiber transfer transition roller is provided at a position corresponding to the longitudinal direction of the triangular region. The fiber transfer transition roller is rotatably supported between a pair of face-to-face frame wall panels.

[0018] The technical effect of the solution provided by this invention is as follows: Since a nipple sensing pressure roller is set at the upper right end of the feeding curtain to sense nipples in the fibers passing through the feeding curtain, when the nipple passes through the nipple sensing pressure roller, the nipple will generate a reaction force on the nipple sensing pressure roller due to the nipple being stiff and clumped. As a result, the nipple sensing pressure roller can quickly and accurately collect the pressure signal and feed it back to the external electrical controller. The external electrical controller will stop the feeding curtain from working and the online operator will remove the nipple, thereby avoiding damage to the needle cloth on the roller surface and ensuring the quality of the final nonwoven product. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an embodiment of the present invention.

[0020] Figure 2 for Figure 1 The cross-sectional view shown is of the cotton knot sensing roller. Detailed Implementation

[0021] Please see Figure 1 The diagram shows a feed curtain 1, to which fibers opened by an opening machine in the preceding process are supplied; a feed roller assembly 2 rotatably arranged between a pair of face-to-face frame wall panels (not shown in the diagram, but can be well understood by reading the patent documents mentioned by the applicant in the background section above); a fiber feed transfer roller 3a located to the right of the feed roller assembly 2; a transfer roller 3b located between the lower right side of the feed roller assembly 2 and the lower left side of the fiber feed transfer roller 3a; a licker-in roller 4 located to the right of the fiber feed transfer roller 3a; a breast cylinder 5a located slightly below the right side of the licker-in roller 4; a fiber transfer roller 5b located to the right of the breast cylinder 5a; a main carding roller 6 located above the right side of the fiber transfer roller 5b; an upper doffer 7a located above the right side of the main carding roller 6; and a lower doffer located below the right side of the main carding roller 6. 7b. An upper inner scrambling roller 7c located to the right of the upper doffer 7a; an upper outer scrambling roller 7d located to the right of the upper inner scrambling roller 7c; a lower inner scrambling roller 7e located to the right of the lower doffer 7b; a lower outer scrambling roller 7f located to the right of the lower inner scrambling roller 7e; an upper fiber stripping roller 7g located to the right of the upper outer scrambling roller 7d; a lower fiber stripping roller 7h located to the right of the lower outer scrambling roller 7f; an upper output curtain 7i; and a lower output curtain 7j. The left end of the upper output curtain 7i extends to the left below the aforementioned upper fiber stripping roller 7g, upper outer scrambling roller 7d, and upper inner scrambling roller 7c, while the left end of the lower output curtain 7j extends to the left below the aforementioned lower fiber stripping roller 7h, lower outer scrambling roller 7f, and lower inner scrambling roller 7e. The aforementioned upper output curtain 7i is an inclined curtain and is located above the lower output curtain 7j, while the lower output curtain 7j is a flat curtain.

[0022] The key technical point of the technical solution provided by the present invention is as follows: a nipple sensing roller 8 is provided above the right end of the aforementioned feeding curtain 1 (or above the middle or other reasonable position) for sensing nipples in the fibers passing through the feeding curtain 1. The nipple sensing roller 8 is rotatably supported between the aforementioned face-to-face frame wall plates.

[0023] Please see Figure 2 A cotton knot sensing roller bearing seat 81 is provided at the front end and rear end of the aforementioned cotton knot sensing roller 8. A cotton knot sensing roller shaft 811 is fixed on the cotton knot sensing roller bearing seat 81. The cotton knot sensing roller shaft 811 extends outside the aforementioned cotton knot sensing roller 8 and is rotatably supported on the cotton knot sensing roller support seat 8111. The cotton knot sensing roller support seat 8111 is fixed to the aforementioned frame wall plate. The middle part of the cotton knot sensing roller 8 corresponds to the upper right end of the aforementioned feeding curtain 1. In the cotton knot sensing roller cavity 82 in the middle part of the cotton knot sensing roller 8, multiple groups are arranged at intervals, and each group has multiple pressure signal acquisition elements 9 distributed at intervals. Each pressure signal acquisition element 9 is led to the outside and electrically connected to an external electrical controller through a pressure signal acquisition element lead wire 91.

[0024] Depend on Figure 2 As shown, in the aforementioned complex array of pressure signal acquisition elements 9, each array of pressure signal acquisition elements is fixed at intervals around the circumferential direction of the cavity wall of the cotton knot sensing pressure roller cavity 82 of the aforementioned cotton knot sensing pressure roller 8.

[0025] In this embodiment, the fixing method of each of the aforementioned pressure signal acquisition elements 9 around the circumferential direction of the cavity wall of the cotton knot sensing pressure roller cavity 82 of the aforementioned cotton knot sensing pressure roller 8 is adhesive, but it can also be embedded, or fixed in other equivalent ways.

[0026] The aforementioned nipple sensing roller shaft 811 is configured to have a nipple sensing roller shaft cavity 8112 that communicates with the aforementioned nipple sensing roller cavity 82. The pressure signal acquisition element lead wire 91 of the aforementioned pressure signal acquisition element 9 is led to the outside through the nipple sensing roller shaft cavity 8112 and electrically connected to an external electrical controller.

[0027] See you later Figure 2 A conductive slip ring 10 is provided on the aforementioned cotton nip sensing pressure roller shaft 811. The conductive slip ring shaft 101 of the conductive slip ring 10 is fixed to the cotton nip sensing pressure roller shaft 811. The pressure signal acquisition element lead 91 of the aforementioned pressure signal acquisition element 9 is led out to the outside world via the conductive slip ring lead 102 of the conductive slip ring 10 and electrically connected to the aforementioned external electrical controller. According to professional knowledge, the conductive slip ring 10 itself does not rotate.

[0028] In this embodiment, the pressure signal acquisition element 9 is a pressure sensor.

[0029] Please see Figure 1 At the upper part of the aforementioned licker-in roller 4 along its length direction, licker-in roller work roller 41 and licker-in roller stripping roller 42 are arranged in pairs at intervals. The licker-in roller work roller 41 and licker-in roller stripping roller 42 cooperate with each other and are rotatably supported between a pair of face-to-face frame wall plates. At the upper part of the aforementioned main carding roller 6 along its length direction, main carding roller work roller 61 and main carding roller stripping roller 62 are arranged in pairs at intervals. The main carding roller work roller 61 and main carding roller stripping roller 62 cooperate with each other and are rotatably supported between a pair of face-to-face frame wall plates.

[0030] See you later Figure 1 The aforementioned feed roller group 2 includes a pair of upper feed rollers 21 and a pair of lower feed rollers 22. The pair of upper and lower feed rollers 21 and 22 are vertically aligned and rotatably supported between the aforementioned pair of face-to-face frame wall plates. The nonwoven fibers fed by the aforementioned feed curtain 1 pass between the pair of upper feed rollers 21 and the pair of lower feed rollers 22.

[0031] A triangular area is formed between the upper part of the aforementioned licker roller 4 and the aforementioned chest cylinder 5a in the longitudinal direction. A fiber transfer transition roller 5c is provided at a position corresponding to the longitudinal direction of the triangular area. The fiber transfer transition roller 5c is rotatably supported between the aforementioned pair of face-to-face frame wall panels.

[0032] Since the working principle of the carding machine of the present invention, including the carding chain and the upper and lower output curtains 7i and 7j, which transport the carded fibers to the subsequent web laying machine, can be found in CN206089904U, the applicant will not elaborate further.

[0033] When fibers opened by the previous opener are introduced to the right between the feed curtain 1 and the cotton feeding roller group 2 in the carding machine structure system of this invention, if cotton knots are mixed in with the fibers, the cotton knots will exert a force on the cotton knot sensing pressure roller 8. This will cause the pressure signal acquisition element 9 (i.e., pressure sensor) in the cotton knot sensing pressure roller cavity 82 of the cotton knot sensing pressure roller 8 to sense the force and feed it back to the external electrical controller via the pressure signal acquisition element lead wire 91. The external electrical controller will then send a signal to the motor of the power mechanism that drives the feed curtain 1, causing the feed curtain 1 to stop working, and the online operator will remove the cotton knots. Because multiple groups of pressure signal acquisition elements 9 are arranged at intervals on the cotton knot sensing pressure roller 8, and each group has multiple pressure signal acquisition elements 9 distributed at intervals, the location of the cotton knots can be accurately revealed on the external electrical controller, which facilitates the inspection and removal, shortens downtime, and avoids affecting the working efficiency of the carding machine.

[0034] In summary, the technical solution provided by this invention makes up for the shortcomings of the prior art, successfully completes the invention task, and accurately realizes the technical effects described by the applicant in the above technical effects column.

Claims

1. A carding machine having automatic sensing of neps position function comprising a feed apron (1); a set of feed rollers (2) rotatably disposed between a pair of face-to-face disposed frame walls; a fibre feed transfer roller (3a) located to the right of the set of feed rollers (2); a transfer roller (3b) located between the right lower side of the set of feed rollers (2) and the left lower side of the fibre feed transfer roller (3a); a licker-in roller (4) located to the right of the fibre feed transfer roller (3a); a breast tin (5a) located to the right lower side of the licker-in roller (4); a fibre transfer roller (5b) located to the right of the breast tin (5a); a main cylinder (6) located to the right upper side of the fibre transfer roller (5b); an upper doffer (7a) located to the right upper side of the main cylinder (6); a lower doffer (7b) located to the right lower side of the main cylinder (6); an upper inner fly roller (7c) located to the right of the upper doffer (7a); an upper outer fly roller (7d) located to the right of the upper inner fly roller (7c); a lower inner fly roller (7e) located to the right of the lower doffer (7b); a lower outer fly roller (7f) located to the right of the lower inner fly roller (7e); an upper fibre stripper roller (7g) located to the right of the upper outer fly roller (7d); a lower fibre stripper roller (7h) located to the right of the lower outer fly roller (7f); an upper delivery apron (7i); and a lower delivery apron (7j); wherein, The left end of the upper output curtain (7i) extends to the left below the upper fiber stripping roller (7g), the upper outer trash roller (7d) and the upper inner trash roller (7c), the upper output curtain (7i) is an inclined curtain and corresponds to the upper side of the lower output curtain (7j), and the lower output curtain (7j) is a flat curtain.

2. A carding machine with automatic sensing of the position of the neps function according to claim 1, characterized in that: The left end of the upper output curtain (7i) extends to the left below the upper fiber stripping roller (7g), the upper outer trash roller (7d) and the upper inner trash roller (7c), the upper output curtain (7i) is an inclined curtain and corresponds to the upper side of the lower output curtain (7j), and the lower output curtain (7j) is a flat curtain.

3. A carding machine with automatic sensing of the position of the neps function according to claim 2, characterized in that: A nubbing sensing press roller (8) for sensing nubs in fibers passing through the feed curtain (1) is arranged above the right end of the feed curtain (1), the nubbing sensing press roller (8) is rotatably supported between the facing rack walls, a nubbing sensing press roller shaft seat (81) is arranged at the front end and the rear end of the nubbing sensing press roller (8), a nubbing sensing press roller shaft (811) is fixed on the nubbing sensing press roller shaft seat (81), the nubbing sensing press roller shaft (811) extends out of the nubbing sensing press roller (8) and is rotatably supported on a nubbing sensing press roller support seat (8111) fixed with the rack wall, a plurality of groups of a plurality of pressure signal collecting elements (9) are arranged in the nubbing sensing press roller cavity (82) of the middle part of the nubbing sensing press roller (8) corresponding to the right end of the feed curtain (1) in a spaced state, each pressure signal collecting element (9) is connected to the outside and the external electrical controller through a pressure signal collecting element lead-out wire (91).

4. A carding machine with automatic sensing of the position of the neps function according to claim 1, characterized in that: In the plurality of groups of pressure signal collecting elements (9), each group of pressure signal collecting elements is fixed in a spaced state around the circumferential direction of the cavity wall of the nubbing sensing press roller cavity (82) of the nubbing sensing press roller (8).

5. A carding machine with automatic sensing of the position of the neps function according to claim 4, characterized in that: The fixed manner of each group of pressure signal collecting elements (9) fixed in a spaced state around the circumferential direction of the cavity wall of the nubbing sensing press roller cavity (82) of the nubbing sensing press roller (8) is embedded or adhered.

6. A carding machine with automatic sensing of the position of the neps according to any one of claims 1 to 5, characterized in that: The nubbing sensing press roller shaft (811) is provided with a nubbing sensing roller shaft cavity (8112) communicating with the nubbing sensing press roller cavity (82), the pressure signal collecting element lead-out wire (91) of the pressure signal collecting element (9) is led out to the outside and the external electrical controller through the nubbing sensing roller shaft cavity (8112). A conductive slip ring (10) is arranged on the nubbing sensing press roller shaft (811), the conductive slip ring rotating shaft (101) of the conductive slip ring (10) is fixed with the nubbing sensing press roller shaft (811), the pressure signal collecting element lead-out wire (91) of the pressure signal collecting element (9) is led out to the outside and the external electrical controller through the conductive slip ring lead-out wire (102) of the conductive slip ring (10). The pressure signal collecting element (9) is a pressure sensor.

7. A carding machine with automatic sensing of the position of the neps function according to claim 1, characterized in that: A pair of a licker-in working roller (41) and a licker-in stripping roller (42) are arranged in a pair at intervals at a position of an upper portion in a length direction of the licker-in (4), and the licker-in working roller (41) and the licker-in stripping roller (42) are engaged with each other and rotatably supported between the pair of the facing wall plates. A pair of a main cylinder working roller (61) and a main cylinder stripping roller (62) are arranged in a pair at intervals at a position of an upper portion in a length direction of the main cylinder (6), and the main cylinder working roller (61) and the main cylinder stripping roller (62) are engaged with each other and rotatably supported between the pair of the facing wall plates.

8. A carding machine with automatic sensing of the position of the neps function according to claim 1, characterized in that: The said gilling roller set (2) comprises a pair of upper gilling rollers (21) and a pair of lower gilling rollers (22), the pair of upper and lower gilling rollers (21, 22) correspond to each other in up and down directions and are rotatably supported between the pair of the facing wall plates. The non-woven textile fibers fed by the feeding curtain (1) pass between the pair of upper gilling rollers (21) and the pair of lower gilling rollers (22).

9. A carding machine with automatic sensing of the position of the neps function according to claim 1, characterized in that: A triangular region is formed between an upper portion in a length direction of the licker-in (4) and the breast cylinder (5a), and a fiber transfer transition roller (5c) is arranged at a position corresponding to the length direction of the triangular region and is rotatably supported between the pair of the facing wall plates.

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