Inclined cloth dragging fork for tufting machine and artificial turf tufting mechanism

Abstract

The utility model discloses an inclined cloth dragging fork for a tufting machine and an artificial turf tufting mechanism, the cloth dragging fork comprises a plate body, one side of the plate body is provided with a plurality of lengthened inclined inserting grooves, and a first tufting needle and a second tufting needle are both located on the groove center lines of the lengthened inclined inserting grooves. A vertical slot of an existing cloth dragging fork is changed into the lengthened inclined slot, so that the first tufting needle and the second tufting needle can be located on the slot middle line of the lengthened inclined slot, namely, the tufting needle does not move up and down close to the side wall of the slot any more, it can be guaranteed that an enough gap is formed between the cloth supporting fork and the tufting needle, and the situation that grass is implanted into the tufting needle is affected is avoided; the production efficiency is influenced, and the risk of damage caused by collision of the tufting needle and the slot of the cloth dragging fork is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial turf tufting machines, and more specifically, to an inclined drag fork for a tufting machine and an artificial turf tufting mechanism. Background Technique

[0002] An artificial turf tufting machine, such as CN206245043U - A tufting machine, is developed from a carpet tufting machine. After years of development, the supporting tufting needles, tufting hooks, and tufting knives are very mature and perfect both in terms of materials and design.

[0003] Since the grass yarn weight of artificial turf is much greater than that of carpet fibers, the overall strength requirement of the tufting mechanism is significantly improved. Therefore, the tufting row spacing is relatively large for installing thicker tufting needles and tufting knives. Currently, for making high - density artificial turf or high - low turf, since the tufting needles, tufting hooks, and tufting knives are all single - row structures, it can only be achieved by secondary tufting, which not only consumes labor but also results in poor carpet surface quality.

[0004] To solve the above problems, the applicant has applied for a patent with the patent number 2024217700857 and the name of an artificial turf tufting mechanism. The tufting needles, tufting hooks, and tufting knives used in it are all double - row structures, and high - density artificial turf or high - low artificial turf can be produced only through one - time tufting, greatly improving the tufting efficiency and quality of grass yarns and reducing production costs. However, the applicant found that the slot 1001 of the drag fork 100 in this tufting mechanism is vertically arranged. The first tufting needle 22 and the second tufting needle 23 are located in the same slot 1001, but the two tufting needles are respectively close to the two side walls of the slot 1001. The reason is that the distance between the drag forks is too small to ensure strength and is not easy to process, so only the misalignment distance between the two rows of tufting needles can be reduced, and the adjacent front and rear tufting needles are installed in one drag fork slot. There is a risk of the tufting needle hitting the side wall of the slot 1001 when moving up and down, and the distance between the tufting needle and the drag fork is too small, which causes interference with the implantation of grass yarns, affecting production efficiency, and the grass yarn row spacing shows non - equidistant arrangement, which to a certain extent affects the even distribution of grass yarns.

[0005] Therefore, how to provide a drag fork that can ensure both strength and spacing and an artificial turf tufting mechanism with a completely equidistant and evenly distributed double - row tufting needle is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0006] In view of this, the utility model provides an inclined drag fork for a tufting machine and an artificial turf tufting mechanism that can reduce the risk of the tufting needle hitting and damaging the slot of the drag fork.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An inclined cloth drag fork for a tufting machine, comprising: a plate body, on one side of which there are a plurality of continuously and evenly distributed lengthened inclined slots, and the first tufting needle and the second tufting needle are both located on the center line of the lengthened inclined slots.

[0009] As can be seen from the above technical solutions, compared with the prior art, the present utility model discloses an inclined cloth drag fork for a tufting machine, which changes the vertical slots on the existing cloth drag fork to lengthened inclined slots, so that both the first tufting needle and the second tufting needle can be located on the center line of the lengthened inclined slots, and the distances between all adjacent tufting needles are equal, enabling the tufting needles not to move up and down close to the side walls of the slots. This not only reduces the influence of the original vertical cloth support fork on the implantation of grass filaments, but also avoids needle collision. Moreover, it can ensure that the row spacing of all grass filaments is consistent, making the grass filament distribution on the carpet surface more uniform and improving the product quality.

[0010] An artificial turf tufting mechanism, comprising:

[0011] The inclined cloth drag fork, with the same installation method as the existing cloth drag fork, is processed in sections and then spliced, reducing the processing cost and processing difficulty;

[0012] A double-row tufting needle assembly, which is connected to the first driving part on the tufting machine and is used to drive the first tufting needle and the second tufting needle on the double-row tufting needle assembly to reciprocate up and down, driving the grass filaments thereon to pass through the lengthened inclined slots and implant the grass filaments into the base cloth;

[0013] A double-row tufting hook assembly, which is connected to the second driving part on the tufting machine and is used to drive the double-row tufting hook assembly to reciprocate horizontally to hook the grass filaments on the tufting needles passing under the base cloth;

[0014] A double-row tufting knife assembly, which is connected to the third driving part on the tufting machine and is used to drive the double-row tufting knife assembly to reciprocate up and down to cooperate with the double-row tufting hook assembly to cut off the hooked grass filaments.

[0015] During tufting, the base fabric moves at a constant speed under the drive of two carding cylinders arranged front and back on the tufting machine. The double-row tufting needle assembly carries two strands of grass fiber. The first drive part drives the double-row tufting needle assembly to move downward to pierce the base fabric, and implants the two strands of grass fiber on the double-row tufting needle assembly into the base fabric respectively. At the same time, the second drive part drives the double-row tufting hook assembly to move forward, and the hooks on it respectively hook the two strands of grass fiber. At the same time, the third drive part drives the double-row tufting knife assembly to move upward, cooperate with the double-row tufting hook assembly, and cut off the hooked grass fiber to form pile heads. After the grass fiber is hooked and flocked, the first drive part drives the double-row tufting needle assembly to move upward to return to the original position, the second drive part drives the double-row tufting hook assembly to retreat and return to the original position, and the third drive part drives the double-row tufting knife assembly to move downward to return to the original position. The above-mentioned one tufting action is completed. Each component of the tufting mechanism cooperates and reciprocates to evenly tuft the grass fiber on the base fabric.

[0016] Therefore, the tufting needles, tufting hooks and tufting knives used in this tufting mechanism are all double-row structures. Only one tufting is required to produce high-density artificial turf or high-low artificial turf, which greatly improves the grass fiber tufting efficiency and quality and reduces the production cost.

[0017] Furthermore, the double-row tufting needle assembly includes:

[0018] A needle row seat, which is connected to the first drive part;

[0019] The first tufting needles, which are multiple and fixedly arranged on the bottom end surface of the needle row seat at equal intervals in a row;

[0020] The second tufting needles, which are multiple and fixedly arranged on the bottom end surface of the needle row seat at equal intervals in a row;

[0021] The two rows of tufting needles are arranged at the same interval. The second tufting needles are arranged in a staggered manner with the first tufting needles, and the staggering distance is half of the interval of the single-row tufting needles;

[0022] The double-row tufting hook assembly includes:

[0023] A tufting hook seat, which is connected to the second drive part:

[0024] The first tufting hooks, which are multiple and fixed on the tufting hook seat at equal intervals in a row. The hook parts of the first tufting hooks correspond to the needle parts of the first tufting needles;

[0025] The second tufting hooks, which are multiple and fixed on the tufting hook seat at equal intervals in a row. The hook parts of the second tufting hooks correspond to the needle parts of the second tufting needles;

[0026] The two rows of tufting hooks are arranged at the same interval and are consistent with the arrangement interval of the tufting needles. The second tufting hook is staggered with the first tufting hook, and the dislocation distance is half of the interval of a single row of tufting hooks.

[0027] The double-row tufting knife assembly includes:

[0028] A tufting knife seat, which is connected to a third driving part;

[0029] The first tufting knives, which are multiple and fixed on the tufting knife seat and arranged in rows at equal intervals. The cutting edges of the first tufting knives correspond to the cutting edges of the first tufting hooks;

[0030] The second tufting knives, which are multiple and fixed on the tufting knife seat and arranged in rows at equal intervals. The cutting edges of the second tufting knives correspond to the cutting edges of the second tufting hooks.

[0031] The two rows of tufting knives are arranged at the same interval and are consistent with the arrangement interval of the tufting hooks. The second tufting knife is staggered with the first tufting knife, and the dislocation distance is half of the interval of a single row of tufting knives;

[0032] The beneficial effects of adopting the above technical solutions are as follows: During tufting, the first tufting needle and the second tufting needle move downward simultaneously to pierce the base fabric. The first tufting hook hooks the grass fiber on the first tufting needle, the first tufting knife cooperates with the first tufting hook to cut the grass fiber on the first tufting needle, the second tufting hook hooks the grass fiber on the second tufting needle, and the second tufting knife cooperates with the second tufting hook to cut the grass fiber on the second tufting needle. Then, a high-density artificial turf can be produced by using the double-row tufting structure for one-time tufting. The first tufting needle and the second tufting needle are staggered, which can effectively reduce the mutual interference between the grass fibers during tufting, improve the tufting density of the grass fibers, and ensure the production efficiency at the same time;

[0033] Further, the needle parts of the first tufting needles and the second tufting needles are at the same height, the hook parts of the first tufting hooks and the second tufting hooks are at the same height, and the cutting edges of the first tufting knives and the second tufting knives are at the same height;

[0034] Or,

[0035] The needle part of the first tufting needle is lower than or higher than the needle part of the second tufting needle; the hook part of the first tufting hook is lower than or higher than the hook part of the second tufting hook; the cutting edge of the first tufting knife is lower than or higher than the cutting edge of the second tufting knife.

[0036] The beneficial effects of adopting the above technical solution are as follows: Through one-time tufting, artificial turf with high density and the same height or artificial turf with high density and different heights evenly distributed can be produced, enriching the product line and improving the simulation of artificial grass.

[0037] Furthermore, a plurality of first mounting needle holes arranged in rows and a plurality of second mounting needle holes arranged in rows are formed on the bottom end surface of the needle row seat. The head of the first tufting needle is inserted into the first mounting needle hole, and the head of the second tufting needle is inserted into the second mounting needle hole. A plurality of first set screws and a plurality of second set screws are respectively screwed on both side surfaces of the needle row seat. The first set screw is in tight contact with the head of the first tufting needle, and the second set screw is in tight contact with the head of the second tufting needle.

[0038] The beneficial effects of adopting the above technical solution are as follows: By loosening the first set screw and the second set screw, the lengths of the first tufting needle and the second tufting needle can be respectively replaced, so that the tufting needles are at the same height or different heights, and then grass filaments of the same height or different heights can be tufted, realizing multi-functional use of one machine. In addition, this structure also facilitates the replacement and retyping operation of the tufting needles in the later stage.

[0039] Furthermore, a first through hole penetrating through both ends thereof is provided on the tufting hook seat along its length direction. A plurality of third set screws are screwed on the bottom end surface of the tufting hook seat along its length direction. A plurality of first mounting positioning holes and second mounting positioning holes that are all communicated with the first through hole are respectively formed on one side surface of the tufting hook seat. The first mounting positioning holes and the second mounting positioning holes are arranged alternately. The tail of the first tufting hook is inserted into the first mounting positioning hole, and the tail of the second tufting hook is inserted into the second mounting positioning hole;

[0040] The hook parts of the first tufting hook and the second tufting hook are at the same height. A first limiting plate is arranged in the first through hole, and the top end surface of the first limiting plate is in contact with the bottom end surfaces of the tails of the first tufting hook and the second tufting hook. The third set screw is in tight contact with the bottom end surface of the first limiting plate;

[0041] Or,

[0042] The hook parts of the first tufting hook and the second tufting hook are at different heights. A second limiting plate and a third limiting plate are arranged in the first through hole. The top end surface of the second limiting plate is in contact with the bottom end surface of the tail of the first tufting hook. The third set screw is in tight contact with the bottom end surface of the second limiting plate. The third limiting plate is clamped between the first tufting hook and the second tufting hook.

[0043] The beneficial effects of adopting the above technical solution are as follows: The setting of the third set screw facilitates the quick disassembly, installation, later replacement and maintenance of the first tufting hook and the second tufting hook. Moreover, the first limiting plate can limit the first tufting hook and the second tufting hook to the same height, which is convenient for cooperating with the first tufting needle and the second tufting needle at the same height to obtain a lawn with grass fiber of the same height; the third limiting plate can adjust the height difference between the two rows of tufting hooks to obtain the first tufting hook and the second tufting hook with different heights, and cooperate with the first tufting needle and the second tufting needle with different heights to form grass tufted pile heads with different heights.

[0044] Furthermore, a plurality of third installation positioning holes and fourth installation positioning holes that are all communicated with the first through hole are respectively formed on the other side surface of the tufting hook seat. The third installation positioning holes and the fourth installation positioning holes are arranged staggeredly. The tail of the first tufting hook passes through the first installation positioning hole and is inserted into the third installation positioning hole, and the tail of the second tufting hook passes through the second installation positioning hole and is inserted into the fourth installation positioning hole.

[0045] The beneficial effects of adopting the above technical solution are as follows: The tail of the first tufting hook is simultaneously limited and inserted into the first installation positioning hole and the third installation positioning hole, which can improve the installation stability of the first tufting hook and prevent the first tufting hook from shaking. The tail of the second tufting hook is simultaneously limited and inserted into the second installation positioning hole and the fourth installation positioning hole, which can improve the installation stability of the second tufting hook and prevent the first tufting hook from shaking.

[0046] Furthermore, a second through hole penetrating through both ends along the length direction is provided on the tufting knife seat. A plurality of fourth set screws are screwed along the length direction on one side surface of the tufting knife seat. A plurality of fifth installation positioning holes and sixth installation positioning holes that are all communicated with the second through hole are respectively formed on the top surface of the tufting knife seat. The fifth installation positioning holes and the sixth installation positioning holes are arranged staggeredly and equidistantly. The tail of the first tufting knife is inserted into the fifth installation positioning hole, and the tail of the second tufting knife is inserted into the sixth installation positioning hole;

[0047] A fourth limiting plate and a fifth limiting plate are arranged in the second through hole. One side of the fourth limiting plate abuts against one side of the first tufting knife, and the fourth set screw is in tight contact with the other side of the fourth limiting plate. The fifth limiting plate is clamped between the first tufting knife and the second tufting knife.

[0048] The beneficial effects of adopting the above technical solution are as follows: By loosening the fourth set screw, the cutting edges of the first tufting knife and the second tufting knife can be adjusted to the same height or different heights, so as to cooperate with the first tufting hook and the second tufting hook with the same height or different heights to cut grass filaments with the same height or different heights.

[0049] Further, a plurality of seventh mounting and positioning holes and eighth mounting and positioning holes that are all communicated with the second through hole are respectively formed on the bottom end surface of the tufting knife seat. The seventh mounting and positioning holes and the eighth mounting and positioning holes are arranged in an alternating manner. The tail of the first tufting knife sequentially passes through the fifth mounting and positioning hole and the seventh mounting and positioning hole, and the tail of the second tufting knife sequentially passes through the sixth mounting and positioning hole and the eighth mounting and positioning hole.

[0050] The beneficial effects of adopting the above technical solution are as follows: The tail of the first tufting knife is simultaneously limited and inserted into the fifth mounting and positioning hole and the seventh mounting and positioning hole, which can improve the installation stability of the first tufting knife and prevent the first tufting knife from shaking. The tail of the second tufting knife is simultaneously limited and inserted into the sixth mounting and positioning hole and the eighth mounting and positioning hole, which can improve the installation stability of the second tufting knife and prevent the second tufting knife from shaking.

[0051] Further, a first wire threading hole for threading grass filaments is formed at a position close to the needle part of the first tufting needle. A first notch for the hook part of the first tufting hook to pass through is formed at a position close to the first wire threading hole on the first tufting needle. A second wire threading hole for threading grass filaments is formed at a position close to the needle part of the second tufting needle. A second notch for the hook part of the second tufting hook to pass through is formed at a position close to the second wire threading hole on the second tufting needle;

[0052] The shapes of the first wire threading hole and the second wire threading hole are both oval, and their areas are not less than 10 mm 2 。

[0053] The beneficial effects of adopting the above technical solution are as follows: The shapes of the first wire threading hole and the second wire threading hole are both oval, and their areas are not less than 10 mm 2 so that it is convenient to thread grass filaments with a large gram weight.

[0054] The preparation method of the artificial turf based on this tufting mechanism consists of the following steps:

[0055] 1) The base fabric moves on the drag fork in the tufting area at a certain speed;

[0056] 2) Feed the grass filament fibers for artificial turf into the tufting needles in the first row and the tufting needles in the second row, and the tufting needles in the first row and the second row repeatedly pierce the moving base fabric;

[0057] 3) As the two rows of tufting needles repeatedly penetrate the base fabric, the grass fibers on the tufting needles are implanted at the same or different depths as the tufting needles pass through the base fabric; when the two rows of tufting needles carry the grass fibers and penetrate the base fabric, the tufting hooks that match the height thereof timely hook the grass fibers on the tufting needles that pass through the base fabric, and then with the cooperation of the tufting knife (cutting knife), the grass fibers are cut to form piles of the same or different heights, and then two rows of non-overlapping artificial grass fibers are tufted on the base fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0059] Figure 1 The figure is a schematic structural diagram of a vertical slot of a mop fork in the prior art.

[0060] Figure 2 The utility model provides a structural schematic diagram of an extended inclined slot of an inclined mop fork for a tufting machine.

[0061] Figure 3 This is a schematic diagram of an artificial turf tufting mechanism provided by the present invention with two rows of tufting needles located at the same height.

[0062] Figure 4 This is a schematic diagram of an artificial turf tufting mechanism provided by the present invention with two rows of tufting needles located at different heights.

[0063] Figure 5 This is a side view when the needle parts of the first tufting needle and the second tufting needle are at the same height.

[0064] Figure 6 This is a side view of the first tufting needle and the second tufting needle when the needle parts are at different heights.

[0065] Figure 7 This is a top view of the needle bar seat.

[0066] Figure 8 Schematic diagram of the first tufting needle.

[0067] Figure 9 Schematic diagram of the second tufting needle.

[0068] Figure 10 This is a schematic diagram of the first tufting needle and the second tufting needle being at the same height and being fixed by the first top screw and the second top screw.

[0069] Figure 11 Schematic diagram of fixation by the first top screw and the second top screw when the first tufting needle and the second tufting needle are at different heights.

[0070] Figure 12 Top view schematic diagram of the double-row tufting hook assembly.

[0071] Figure 13 Schematic diagram of the first perspective of the double-row tufting hook assembly.

[0072] Figure 14 Schematic diagram of the second perspective of the double-row tufting hook assembly.

[0073] Figure 15 Schematic diagram when the first tufting hook and the second tufting hook are at the same height.

[0074] Figure 16 Schematic diagram when the first tufting hook and the second tufting hook are at different heights.

[0075] Figure 17 Three-dimensional schematic diagram of the double-row tufting knife assembly.

[0076] Figure 18 Schematic diagram when the first tufting knife and the second tufting knife are at the same height.

[0077] Figure 19 Schematic diagram when the first tufting knife and the second tufting knife are at different heights. Detailed implementation manners

[0078] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0079] As Figure 2 shown, an inclined cloth drag fork for a tufting machine disclosed in an embodiment of the present utility model includes: a plate body 1, and a plurality of continuously and uniformly distributed elongated inclined slots 101 are opened on one side of the plate body 1. When the first tufting needle 22 and the second tufting needle 23 pass through the elongated inclined slots 101, they are both located on the slot center line 102 of the elongated inclined slots 101.

[0080] As Figure 3-19 shown, an artificial turf tufting mechanism of the present utility model includes:

[0081] The above-mentioned inclined cloth drag fork;

[0082] Double-row tufting needle assembly 2, the double-row tufting needle assembly 2 is connected to the first driving part on the tufting machine, and is used to drive the first tufting needles 22 and the second tufting needles 23 on the double-row tufting needle assembly 2 to reciprocate up and down, driving the grass filaments thereon to pass through the lengthened inclined slots 101 on the plate body 1 and through the base fabric;

[0083] Double-row tufting hook assembly 3, the double-row tufting hook assembly 3 is connected to the second driving part on the tufting machine, and is used to drive the double-row tufting hook assembly 3 to reciprocate horizontally to hook the grass filaments on the tufting needles located below the base fabric;

[0084] Double-row tufting knife assembly 4, the double-row tufting knife assembly 4 is connected to the third driving part on the tufting machine, and is used to drive the double-row tufting knife assembly 4 to reciprocate up and down to cooperate with the double-row tufting hook assembly 3 to cut off the grass filaments.

[0085] The double-row tufting needle assembly 2 includes:

[0086] Needle row seat 21, the needle row seat 21 is connected to the first driving part (the first driving part can be a telescopic cylinder, an electric push rod or a cam driven by a motor, so as to realize the up and down movement of the needle row seat);

[0087] First tufting needles 22, multiple first tufting needles 22 are fixedly penetrated on the bottom end surface of the needle row seat 21 and are arranged in rows at equal distances;

[0088] Second tufting needles 23, multiple second tufting needles 23 are fixedly penetrated on the bottom end surface of the needle row seat 21 and are arranged in rows at equal distances. The second tufting needles 23 are arranged in a staggered manner with the first tufting needles 22, and the staggering distance is half of the single-row tufting needle spacing;

[0089] See Figure 2 and Figure 7 The spacing between two adjacent first tufting needles 22 and the spacing between two adjacent second tufting needles 23 are both X. The spacing between an adjacent first tufting needle 22 and a second tufting needle 23 is X / 2. The spacing between the center lines 102 of two adjacent lengthened inclined slots 101 is also X. In this way, it can be ensured that when the first tufting needles 22 and the second tufting needles 23 pass through the lengthened inclined slots 101, they are always located on the center line 102, avoiding the collision and damage between the tufting needles and the slot walls of the lengthened inclined slots, ensuring the gap between the grass filaments and the cloth fork when implanting the grass filaments into the base fabric, and avoiding affecting the tufting efficiency.

[0090] Further see Figure 7The spacing Y between the first tufting needle 22 and the second tufting needle 23 is 5-30mm, preferably 20mm. The first tufting needle 22 and the second tufting needle 23 are staggered, with a staggered distance of X / 2; when tufting, the two rows of tufting needles work at the same time to achieve the effect of doubling the number of rows, and the actual row spacing of the lawn is X / 2; if the currently common single-row tufting needle structure is adopted, in order to achieve the same purpose, the tufting needles must be arranged at an X / 2 row spacing, resulting in the distance between adjacent tufting needles being too close. This method can still barely produce light-weight grass yarns, but the grass yarns will interfere with each other, affecting production efficiency; when heavy-weight grass yarns are produced, the tufting hooks will interfere with each other when hooking the grass yarns, and normal production cannot be carried out at all; the double-row tufting needle structure of the utility model solves the production problem of heavy-weight grass yarns very well, and the grass yarn row spacing is consistent, and the blanket surface is more evenly distributed.

[0091] Double row tufting hook assembly 3 includes:

[0092] The tufting hook seat 31 is connected to the second driving part (the second driving part can be a telescopic cylinder, an electric push rod or a cam driven by a motor, thereby realizing the horizontal reciprocating movement of the tufting hook seat):

[0093] A plurality of first tufting hooks 32 are fixed to the tufting hook seat 31 and arranged in rows at equal distances. The hook portion of the first tufting hook 32 corresponds to the needle portion of the first tufting needle 22. The first tufting hook 32 has a blade made of tungsten steel and has good wear resistance.

[0094] A second tufting hook 33, wherein the second tufting hook 33 is fixed to the tufting hook seat 31 and arranged in a row with equal distances, and the hook portion of the second tufting hook 33 corresponds to the needle portion of the second tufting needle 23;

[0095] The two rows of tufting hooks are arranged at the same spacing, which is consistent with the spacing of the tufting needles. The second tufting hooks 33 are staggered with the first tufting hooks 32, and the staggered distance is half of the spacing of the single row of tufting hooks. The tufting hooks have blades made of tungsten steel and have good wear resistance.

[0096] The double-row tufting knife assembly 4 includes:

[0097] The tufting knife holder 41 is connected to the third driving part (the third driving part can be a telescopic cylinder, an electric push rod or a cam driven by a motor, thereby realizing the up and down movement of the tufting knife holder);

[0098] A first tufting knife 42 is fixed to the tufting knife holder 41 and arranged in a row at equal distances. The blade of the first tufting knife 42 (the top of the first tufting knife 42 is the blade) corresponds to the blade position of the first tufting hook 32 (similar to the structure in which the two blades of scissors correspond to each other);

[0099] The second tufting knife 43 includes multiple ones fixedly mounted on the tufting knife base 41 and arranged equidistantly in a row; the blade of the second tufting knife 43 (the top end of the second tufting knife 43 is the blade) corresponds to the position of the blade of the second tufting hook 33 (similar to the structural form where the two blades of scissors correspond to each other).

[0100] The arrangement spacing between the two rows of tufting knives is the same and is consistent with the spacing of the tufting hooks. The second tufting knife 43 and the first tufting knife 42 are arranged staggeredly, and the staggering distance is half of the spacing of a single row of tufting knives.

[0101] The length of the first tufting needle 22 is the same as that of the second tufting needle 23 (in this way, artificial turf of the same height can be prepared). The hook part of the first tufting hook 32 and the hook part of the second tufting hook 33 are at the same height. The blade of the first tufting knife 42 and the blade of the second tufting knife 43 are at the same height.

[0102] Or,

[0103] The length of the first tufting needle 22 is lower than or higher than that of the second tufting needle 23 (in this way, the penetration depth of the tufting needles into the base fabric is also different, which can make the grass filaments on the carpet surface show different height effects, improving the simulation and product characteristics of artificial turf, which cannot be achieved by single-row needles); the hook part of the first tufting hook 32 is lower than or higher than that of the second tufting hook 33; the blade of the first tufting knife 42 is lower than or higher than that of the second tufting knife 43. The heights of the needles, hooks, and knives of each tufting mechanism must match.

[0104] On the bottom end surface of the needle row seat 21, there are multiple first mounting needle holes 211 arranged in a row and multiple second mounting needle holes 212 arranged in a row. The head of the first tufting needle 22 is inserted into the first mounting needle hole 211, and the head of the second tufting needle 23 is inserted into the second mounting needle hole 212. On both side surfaces of the needle row seat 21, there are respectively screwed multiple first set screws 24 and multiple second set screws 25. The first set screw 24 is in tight contact with the head of the first tufting needle 22, and the second set screw 25 is in tight contact with the head of the second tufting needle 23.

[0105] Along the length direction of the tufting hook seat 31, there is a first through hole 311 penetrating through both ends. Along the length direction of the bottom end surface of the tufting hook seat 31, there are multiple third set screws 34 screwed. On one side surface of the tufting hook seat 31, there are respectively multiple first mounting positioning holes 312 and second mounting positioning holes 313 both communicating with the first through hole 311. The first mounting positioning holes 312 and the second mounting positioning holes 313 are arranged staggeredly. The tail of the first tufting hook 32 is inserted into the first mounting positioning hole 312, and the tail of the second tufting hook 33 is inserted into the second mounting positioning hole 313.

[0106] The hook parts of the first tufting hook 32 and the second tufting hook 33 are at the same height. A first limiting plate 35 is arranged in the first through hole 311. The top end surfaces of the first limiting plate 35 are in contact with the bottom end surfaces of the tails of the first tufting hook 32 and the second tufting hook 33 respectively, and the third set screw 34 is in tight contact with the bottom end surface of the first limiting plate 35;

[0107] Or,

[0108] The hook parts of the first tufting hook 32 and the second tufting hook 33 are at different heights. A second limiting plate 36 and a third limiting plate 37 are arranged in the first through hole 311. The top end surface of the second limiting plate 36 is in contact with the bottom end surface of the tail of the first tufting hook 32, the third set screw 34 is in tight contact with the bottom end surface of the second limiting plate 36, and the third limiting plate 37 is clamped between the first tufting hook 32 and the second tufting hook 33.

[0109] On the other side surface of the tufting hook seat 31, a plurality of third installation positioning holes 314 and fourth installation positioning holes 315 which are all communicated with the first through hole 311 are respectively formed. The third installation positioning holes 314 and the fourth installation positioning holes 315 are arranged in a staggered manner. The tail of the first tufting hook 32 passes through the first installation positioning hole 312 and is then arranged in the third installation positioning hole 314, and the tail of the second tufting hook 33 passes through the second installation positioning hole 313 and is then arranged in the fourth installation positioning hole 315.

[0110] A second through hole 411 penetrating through both ends is arranged along the length direction on the tufting knife seat 41. A plurality of fourth set screws 44 are screwed along the length direction on one side surface of the tufting knife seat 41. On the top end surface of the tufting knife seat 41, a plurality of fifth installation positioning holes 412 and sixth installation positioning holes 413 which are all communicated with the second through hole 411 are respectively formed. The fifth installation positioning holes 412 and the sixth installation positioning holes 413 are arranged in a staggered manner. The tail of the first tufting knife 42 is arranged in the fifth installation positioning hole 412, and the tail of the second tufting knife 43 is arranged in the sixth installation positioning hole 413;

[0111] A fourth limiting plate 45 and a fifth limiting plate 46 are arranged in the second through hole 411. One side of the fourth limiting plate 45 is in contact with one side of the first tufting knife 42, the fourth set screw 44 is in tight contact with the other side of the fourth limiting plate 45, and the fifth limiting plate 46 is clamped between the first tufting knife 42 and the second tufting knife 43.

[0112] On the bottom end surface of the tufting knife seat 41, a plurality of seventh installation positioning holes 414 and eighth installation positioning holes 415 which are all communicated with the second through hole 411 are respectively formed. The seventh installation positioning holes 414 and the eighth installation positioning holes 415 are arranged in a staggered manner. The tail of the first tufting knife 42 sequentially passes through the fifth installation positioning hole 412 and the seventh installation positioning hole 414, and the tail of the second tufting knife 43 sequentially passes through the sixth installation positioning hole 413 and the eighth installation positioning hole 415.

[0113] A first tufting needle 22 is provided with a first wire-passing hole 221 for passing through grass filaments near its needle part, and a first notch 222 for the hook part of the first tufting hook 32 to pass through is provided near the first wire-passing hole 221 on the first tufting needle 22. A second tufting needle 23 is provided with a second wire-passing hole 231 for passing through grass filaments near its needle part, and a second notch 232 for the hook part of the second tufting hook 33 to pass through is provided near the second wire-passing hole 231 on the second tufting needle 23;

[0114] The shapes of the first wire-passing hole 221 and the second wire-passing hole 231 are both oval, and their areas are not less than 10 mm 2 .

[0115] In the above, the first driving part, the second driving part, and the third driving part respectively driving the needle row seat, the tufting hook seat, and the tufting knife seat to perform corresponding actions are all conventional structures in existing tufting machines. Also, driving the base fabric to move by two feed rollers is a conventional structure in tufting machines. Therefore, the present utility model does not illustrate these conventional structures, but this will not affect the normal understanding of this technology by those skilled in the art.

[0116] The working process of this tufting mechanism is as follows:

[0117] During operation, the base fabric is driven by the feed rollers to move horizontally at a constant speed on the cloth support fork. The first wire-passing hole on the first tufting needle and the second wire-passing hole on the second tufting needle respectively feed in grass filament fibers (the grass filament fibers include at least one straight artificial turf fiber or / and at least one curved artificial turf fiber). Then, the first driving part drives the needle row seat to move downward, and further makes the first tufting needle and the second tufting needle move downward synchronously, and at the same time pierce the base fabric. At this time, the grass filament fibers penetrate into the base fabric together with the tufting needles. At the same time, the second driving part drives the tufting hook seat to move forward, and further makes the first tufting hook and the second tufting hook on it move forward synchronously, and respectively pass through the first notch and the second notch, and respectively hook the grass filament fibers on the first tufting needle and the second tufting needle. At the same time, the third driving part drives the tufting knife seat to move upward, and further makes the first tufting knife and the second tufting knife on it move upward synchronously, and respectively cooperate with the first tufting hook and the second tufting hook to cut off the grass filament fibers to form pile heads, and the grass filament hooking is completed. After that, the first driving part drives the needle row seat to move upward back to the original position, the second driving part drives the tufting hook seat to retreat and return to the original position, the third driving part drives the tufting knife seat to move downward back to the original position, and the above-mentioned one tufting action is completed. Each component of the tufting mechanism cooperates and reciprocates to uniformly tuft the grass filament fibers on the base fabric.

[0118] The tufting mechanism changes the vertical slots on the existing mop fork to elongated inclined slots, enabling both the first tufting needle and the second tufting needle to maintain the same spacing and be located on the center line of the elongated inclined slots. That is, the tufting needles no longer move up and down close to the side walls of the slots, which can reduce the risk of damage to the tufting needles caused by hitting the slots of the mop fork and make the distribution of the grass filaments more uniform. Moreover, tufting needles of different lengths or the same length can be installed, making the needle tips at the same height or different heights, thereby achieving the effect of grass filaments of equal height or different heights on the carpet surface. The grass filaments of different heights are closer to the lawn in the natural environment, improving the quality of the product.

[0119] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0120] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inclined drag cloth fork for a tufting machine, characterized in that, Comprising: A plate body (1), on one side of which there are provided a plurality of continuously and evenly distributed elongated inclined slots (101), and the first tufting needles (22) and the second tufting needles (23) are both located on the slot center line (102) of the elongated inclined slots (101).

2. An artificial turf tufting mechanism, characterized in that, Comprising: The inclined mop fork according to claim 1; A double-row tufting needle assembly (2), which is connected to a first driving part on the tufting machine and is used to drive the first tufting needles (22) and the second tufting needles (23) on the double-row tufting needle assembly (2) to reciprocate up and down, driving the grass filaments thereon to pass through the elongated inclined slots (101) on the plate body (1) and through the base fabric; A double-row tufting hook assembly (3), which is connected to a second driving part on the tufting machine and is used to drive the double-row tufting hook assembly (3) to reciprocate horizontally to hook the grass filaments on the tufting needles passing through the base fabric; A double-row tufting knife assembly (4), which is connected to a third driving part on the tufting machine and is used to drive the double-row tufting knife assembly (4) to reciprocate up and down to cooperate with the double-row tufting hook assembly (3) to cut off the grass filaments.

3. The artificial turf tufting mechanism according to claim 2, wherein The double-row tufting needle assembly (2) includes: A needle row seat (21), which is connected to the first driving part; The first tufting needles (22), which are a plurality of needles fixedly arranged on the bottom end surface of the needle row seat (21) and are arranged in rows at equal intervals; The second tufting needles (23), which are a plurality of needles fixedly arranged on the bottom end surface of the needle row seat (21) and are arranged in rows at equal intervals; The two rows of tufting needles are arranged at the same interval, and the second tufting needles (23) are arranged in a staggered manner with the first tufting needles (22), and the staggering distance is half of the single-row tufting needle interval; The double-row tufting hook assembly (3) includes: A tufting hook seat (31), which is connected to the second driving part: The first tufting hooks (32), which are a plurality of hooks fixedly arranged on the tufting hook seat (31) and are arranged in rows at equal intervals, and the hook parts of the first tufting hooks (32) correspond to the needle parts of the first tufting needles (22); The second tufting hooks (33), which are a plurality of hooks fixedly arranged on the tufting hook seat (31) and are arranged in rows at equal intervals, and the hook parts of the second tufting hooks (33) correspond to the needle parts of the second tufting needles (23); The two rows of tufting hooks are arranged at the same interval, and the second tufting hooks (33) are arranged in a staggered manner with the first tufting hooks (32), and the staggering distance is half of the single-row tufting hook interval; The double-row tufting knife assembly (4) includes: A tufting knife seat (41), which is connected to the third driving part; The first tufting knife (42), a plurality of the first tufting knives (42) are fixed on the tufting knife base (41) and are arranged at equal intervals in a row, and the cutting edges of the first tufting knives (42) correspond to the positions of the cutting edges of the first tufting hooks (32); The second tufting knife (43), a plurality of the second tufting knives (43) are fixed on the tufting knife base (41) and are arranged at equal intervals in a row, and the cutting edges of the second tufting knives (43) correspond to the positions of the cutting edges of the second tufting hooks (33); Both rows of tufting knives are arranged at the same interval, the second tufting knife (43) and the first tufting knife (42) are staggered, and the dislocation distance is half of the interval of a single row of tufting knives.

4. The artificial turf tufting mechanism according to claim 3, characterized in that, The needle parts of the first tufting needles (22) and the needle parts of the second tufting needles (23) are at the same height, the hook parts of the first tufting hooks (32) and the hook parts of the second tufting hooks (33) are at the same height, and the cutting edges of the first tufting knives (42) and the cutting edges of the second tufting knives (43) are at the same height; Or, The needle part of the first tufting needle (22) is lower than or higher than the needle part of the second tufting needle (23); the hook part of the first tufting hook (32) is lower than or higher than the hook part of the second tufting hook (33); the cutting edge of the first tufting knife (42) is lower than or higher than the cutting edge of the second tufting knife (43).

5. The artificial turf tufting mechanism according to claim 4, characterized in that, A plurality of first mounting needle holes (211) arranged in a row and a plurality of second mounting needle holes (212) arranged in a row are formed on the bottom end surface of the needle row seat (21). The heads of the first tufting needles (22) are inserted into the first mounting needle holes (211), the heads of the second tufting needles (23) are inserted into the second mounting needle holes (212), and a plurality of first set screws (24) and a plurality of second set screws (25) are respectively screwed on both side surfaces of the needle row seat (21). The first set screws (24) are in tight contact with the heads of the first tufting needles (22), and the second set screws (25) are in tight contact with the heads of the second tufting needles (23).

6. The artificial turf tufting mechanism according to claim 5, characterized in that, A first through hole (311) penetrating through both ends is provided on the tufting hook base (31) along its length direction. A plurality of third set screws (34) are screwed on the bottom end surface of the tufting hook base (31) along its length direction. A plurality of first mounting and positioning holes (312) and second mounting and positioning holes (313) that are all communicated with the first through hole (311) are respectively formed on one side surface of the tufting hook base (31). The first mounting and positioning holes (312) and the second mounting and positioning holes (313) are arranged in a staggered manner. The tails of the first tufting hooks (32) are inserted into the first mounting and positioning holes (312), and the tails of the second tufting hooks (33) are inserted into the second mounting and positioning holes (313); The hook parts of the first tufting hook (32) and the second tufting hook (33) are at the same height. A first limiting plate (35) is arranged in the first through hole (311). The top end surfaces of the first limiting plate (35) are in abutting connection with the bottom end surfaces of the tails of the first tufting hook (32) and the second tufting hook (33). The third set screw (34) is in tight contact with the bottom end surface of the first limiting plate (35); Or, The hook parts of the first tufting hook (32) and the second tufting hook (33) are at different heights. A second limiting plate (36) and a third limiting plate (37) are arranged in the first through hole (311). The top end surface of the second limiting plate (36) is in abutting connection with the bottom end surface of the tail of the first tufting hook (32). The third set screw (34) is in tight contact with the bottom end surface of the second limiting plate (36). The third limiting plate (37) is clamped between the first tufting hook (32) and the second tufting hook (33).

7. The tufting mechanism of an artificial turf according to claim 6, characterized in that, On the other side surface of the tufting hook seat (31), a plurality of third installation positioning holes (314) and fourth installation positioning holes (315) which are all communicated with the first through hole (311) are respectively formed. The third installation positioning holes (314) and the fourth installation positioning holes (315) are arranged alternately. The tail of the first tufting hook (32) passes through the first installation positioning hole (312) and is then arranged in the third installation positioning hole (314). The tail of the second tufting hook (33) passes through the second installation positioning hole (313) and is then arranged in the fourth installation positioning hole (315).

8. The artificial turf tufting mechanism according to claim 6, characterized in that, A second through hole (411) penetrating through both ends along the length direction is arranged on the tufting knife seat (41). A plurality of fourth set screws (44) are screwed along the length direction on one side surface of the tufting knife seat (41). On the top end surface of the tufting knife seat (41), a plurality of fifth installation positioning holes (412) and sixth installation positioning holes (413) which are all communicated with the second through hole (411) are respectively formed. The fifth installation positioning holes (412) and the sixth installation positioning holes (413) are arranged alternately. The tail of the first tufting knife (42) is arranged in the fifth installation positioning hole (412). The tail of the second tufting knife (43) is arranged in the sixth installation positioning hole (413); A fourth limiting plate (45) and a fifth limiting plate (46) are arranged in the second through hole (411). One side of the fourth limiting plate (45) is in abutting connection with one side of the first tufting knife (42). The fourth set screw (44) is in tight contact with the other side of the fourth limiting plate (45). The fifth limiting plate (46) is clamped between the first tufting knife (42) and the second tufting knife (43).

9. The artificial turf tufting mechanism according to claim 8, characterized in that, On the bottom end face of the tufting cutter base (41), a plurality of seventh mounting and positioning holes (414) and eighth mounting and positioning holes (415) are respectively formed, and all of them communicate with the second through hole (411). The seventh mounting and positioning holes (414) and the eighth mounting and positioning holes (415) are arranged staggeredly. The tail of the first tufting cutter (42) sequentially passes through the fifth mounting and positioning hole (412) and the seventh mounting and positioning hole (414), and the tail of the second tufting cutter (43) sequentially passes through the sixth mounting and positioning hole (413) and the eighth mounting and positioning hole (415).

10. A tufting mechanism for artificial turf according to any one of claims 3-9, characterized in that, On the first tufting needle (22), a first wire threading hole (221) for threading the grass filaments is formed near its needle part. Near the first wire threading hole (221) on the first tufting needle (22), there is a first notch (222) for the hook part of the first tufting hook (32) to pass through. On the second tufting needle (23), a second wire threading hole (231) for threading the grass filaments is formed near its needle part. Near the second wire threading hole (231) on the second tufting needle (23), there is a second notch (232) for the hook part of the second tufting hook (33) to pass through; The shapes of the first wire threading hole (221) and the second wire threading hole (231) are both oval, and their areas are not less than 10 mm 2 .

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