Automatic cloth flattening device of cloth paving machine

Abstract

The utility model provides an automatic cloth flattening device of a cloth paving machine. The automatic cloth flattening device comprises a lifting driving mechanism; a first gear is arranged at the first end of the connecting mechanism, a second gear and a third gear are arranged at the second end of the connecting mechanism, and the second gear is meshed with the third gear; the rack extends in the width direction of the cloth paving machine and is arranged in the connecting mechanism; one end of the rack is in meshing transmission with the first gear, and the other end is in meshing transmission with the second gear; the flattening mechanism comprises a first flattening piece and a second flattening piece, the end part of the first flattening piece is connected with the first gear, and the end part of the second flattening piece is connected with the third gear; the rack displacement driving mechanism is used for driving the rack to move in the width direction of the cloth paving machine. The cloth flattening device has the advantages that cloth is automatically flattened from inside to outside after the cloth paving action of the cloth paving machine, wrinkles and curled edges of the cloth are eliminated, and the flatness of the cloth is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth spreading machines, in particular to an automatic cloth flattening device for a cloth spreading machine. Background Art

[0002] In the clothing production industry, many garment factories choose to use a spreading machine to complete the spreading work. The spreading machine spreads the entire roll of fabric layer by layer on the table, making it convenient for subsequent cutting of multiple layers of fabric at the same time and improving cutting efficiency.

[0003] The flatness of the fabric is one of the main factors in judging the fabric spreading effect of the fabric spreading machine. During the process of the fabric spreading machine pulling the fabric, due to the friction between the fabrics, wrinkles will appear on the edges of the fabrics, causing the stacked fabrics to be misaligned. In order to avoid affecting the subsequent cutting effect, the wrinkled parts of the fabric edges need to be manually trimmed to keep the fabrics flat, and the overall work efficiency is very low. Utility Model Content

[0004] The utility model aims to provide an automatic cloth flattening device for a cloth spreading machine to solve the problems existing in the prior art.

[0005] The utility model provides an automatic flattening device for a cloth spreading machine, comprising: a lifting drive mechanism, which is installed on a crossbeam, and the crossbeam is arranged between two mounting brackets of the cloth spreading machine; a connecting mechanism, which extends in the width direction of the cloth spreading machine and performs lifting and lowering movements under the drive of the lifting drive mechanism; a first gear is provided at a first end of the connecting mechanism, and a second gear and a third gear are provided at a second end, and the second gear and the third gear are meshed with each other; a rack, which extends in the width direction of the cloth spreading machine and is arranged in the connecting mechanism; one end of the rack is meshed with the first gear for transmission, and the other end is meshed with the second gear for transmission; a flattening mechanism, which is used to flatten the cloth, comprises a first flattening member and a second flattening member, an end of the first flattening member is connected to the first gear, and an end of the second flattening member is connected to the third gear; a rack displacement driving mechanism, which is used to drive the rack to move in the width direction of the cloth spreading machine, drive the first gear, the second gear and the third gear to rotate, and realize the outward expansion or inward contraction of the first flattening member and the second flattening member.

[0006] Preferably, the rack displacement drive mechanism comprises a rotary drive member and a connecting rod driven to swing by the rotary drive member, and the connecting rod is hinged to the rack.

[0007] Preferably, the rack displacement drive mechanism further comprises a worm coaxially connected to the output shaft of the rotary drive member, a worm wheel meshing with the worm, and a crank arranged on the worm wheel, wherein the crank is hinged to the connecting rod.

[0008] Preferably, a first slide groove is provided at the first end of the connecting mechanism, and a second slide groove is provided at the second end, and the extension directions of the first slide groove and the second slide groove are parallel to the width direction of the spreading machine; one end of the rack close to the first gear is hinged to the connecting rod through a connecting rod pin, and the connecting rod pin is slidably set in the first slide groove; one end of the rack close to the second gear is provided with a guide pin, and the guide pin is slidably set in the second slide groove.

[0009] Preferably, it also includes an upper in-position sensor and a lower in-position sensor, the upper in-position sensor is used to detect whether the connecting mechanism moves to the upper dead point, and the lower in-position sensor is used to detect whether the connecting mechanism moves to the lower dead point; the first end edge of the connecting mechanism is also provided with a first in-position sensor for detecting whether the rack moves to the first dead point; the second end edge of the connecting mechanism is also provided with a second in-position sensor for detecting whether the rack moves to the second dead point.

[0010] Preferably, the lifting drive mechanism comprises a cylinder, and the upper position sensor and the lower position sensor are mounted on the cylinder.

[0011] Preferably, a controller is further included, and the controller is respectively connected to the upper in-place sensor, the lower in-place sensor, the first in-place sensor and the second in-place sensor by signal.

[0012] The benefit of the utility model lies in that, taking actual needs into consideration, the cloth is automatically smoothed from the inside out after the cloth spreading machine spreads the cloth, thereby eliminating cloth wrinkles and curling, improving the flatness of the cloth, improving the cutting quality of subsequent cutting work, and reducing the irregularity and waste rate of the cut pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the automatic cloth flattening device of the cloth spreading machine of the utility model;

[0014] Figure 2 This is a rear view of the automatic cloth flattening device of the utility model cloth spreading machine;

[0015] Figure 3 is a schematic diagram of the relative positions of the rack displacement drive mechanism, the rack, the first gear and the first flattening member;

[0016] Figure 4 It is an exploded diagram of the rack displacement drive mechanism;

[0017] Figure 5 is a schematic diagram of the connection structure between the second flattening member and the connection mechanism;

[0018] Figure 6 is a schematic diagram of the first flattened member and the second flattened member in an inwardly contracted state and an enlarged schematic diagram of point A;

[0019] Figure 7 It is a schematic diagram of the first flattened member and the second flattened member in an outwardly opened state and an enlarged schematic diagram of point B.

[0020] Component number description:

[0021] 1 Mounting bracket

[0022] 2 Beam

[0023] 3 Lifting drive mechanism

[0024] 31 First lifting drive member

[0025] 32 Second lifting drive member

[0026] 4 Flattening mechanism

[0027] 41 First flattened piece

[0028] 42 Second flattened piece

[0029] 5 Connection mechanism

[0030] 51 First Chute

[0031] 52 Second chute

[0032] 61 Upper position sensor

[0033] 62 Lower position sensor

[0034] 63 First position sensor

[0035] 64 Second in-position sensor

[0036] 7 Rack displacement drive mechanism

[0037] 71 Rotating drive element

[0038] 711 Coupling

[0039] 712 Worm

[0040] 712a Helical teeth

[0041] 713 Bearings

[0042] 72 Worm gear

[0043] 721 Limiting slot

[0044] 73 Crank

[0045] 731 Crank pin

[0046] 732 Spacer

[0047] 733 Circlip

[0048] 74 Worm gear shaft

[0049] 741 First Bearing

[0050] 742 Second bearing

[0051] 75 Housing

[0052] 751 Rotating Cover

[0053] 752 Pressure Ring

[0054] 753 Mounting Plate

[0055] 81 Connecting rod

[0056] 82 Connecting rod pin

[0057] 83 Rack

[0058] 831 Guide pin

[0059] 84 First Gear

[0060] 85 Flattening bracket

[0061] 851 Flattening bracket shaft

[0062] 86 Second gear

[0063] 861 Gear shaft

[0064] 87 Third gear DETAILED DESCRIPTION

[0065] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0066] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Figure 1 The utility model is a three-dimensional diagram of the automatic flattening device of the cloth spreading machine. In the following description, Figure 1 The attached figure in the figure is used as a reference for the direction. Figure 1 In the figure, the width direction of the spreading machine is defined as the left-right direction, and the second flattening piece 42 is located on the left side of the first flattening piece 41; the moving direction of the connecting mechanism 5 is defined as the up-down direction, and the beam 2 is located above the connecting mechanism 5; the length direction of the spreading machine is defined as the front-back direction, and the first flattening piece 41 and the second flattening piece 42 are located on the rear side of the connecting mechanism 5.

[0069] like Figure 1 As shown, the utility model provides an automatic flattening device for a cloth spreading machine, including a lifting drive mechanism 3, a connecting mechanism 5, a flattening mechanism 4, a rack displacement drive mechanism 7 and a rack 83. The cloth spreading machine includes two mounting brackets 1 arranged opposite to each other on the left and right, and a crossbeam 2 extending in the left-right direction is provided between the two mounting brackets 1. The lifting drive mechanism 3 is fixed on the crossbeam 2 and is used to drive the connecting mechanism 5 to rise and fall. The lifting drive mechanism 3 includes one or more lifting drive members, and the form of the lifting drive member is not limited, and can be a linear motor, a cylinder or a hydraulic cylinder. In a specific embodiment of the utility model, the lifting drive mechanism 3 includes two lifting drive members, namely a first lifting drive member 31 and a second lifting drive member 32, which are respectively connected to the left end and the right end of the connecting mechanism 5, driving the connecting mechanism 5 to move in the up and down directions.

[0070] like Figure 1-3 and Figure 5 As shown, the connecting mechanism 5 extends along the width direction (ie, left-right direction) of the paving machine, and a first gear 84 is provided at its first end, and a second gear 86 and a third gear 87 are provided at its second end, and the second gear 86 and the third gear 87 are meshed with each other.

[0071] like Figure 4 As shown, the rack 83 extends along the width direction of the paving machine and is arranged in the connecting mechanism 5. One end of the rack 83 is meshed with the first gear 84 for transmission, and the other end is meshed with the second gear 86 for transmission.

[0072] like Figure 1 , Figure 3 and Figure 5 As shown, the flattening mechanism 4 is used to flatten the fabric, and includes a first flattening member 41 and a second flattening member 42. A flattening bracket 85 is provided at the end of the first flattening member 41, and the flattening bracket 85 is coaxially connected to the first gear 84 through a flattening bracket shaft. The first flattening member 41 rotates with the first gear 84, and the flattening bracket shaft fixes the first gear 84 in the connecting mechanism 5; similarly, a flattening bracket 85 is provided at the end of the second flattening member 42, and the flattening bracket 85 is coaxially connected to the third gear 87 through a flattening bracket shaft 851. The second flattening member 42 rotates with the third gear 87, and the flattening bracket shaft 851 fixes the third gear 87 in the connecting mechanism 5. The second gear 86 is fixed in the connecting mechanism 5 through a gear shaft 861. The structural form of the first flattening member 41 and the second flattening member 42 is not limited, and can be a brush or a contactless air blowing smoothing device adapted to the fabric, as long as it can achieve the function of eliminating fabric wrinkles and curling.

[0073] like Figure 2-4 As shown, the rack displacement driving mechanism 7 is arranged on the connecting mechanism 5, and is used to drive the rack 83 to move along the width direction of the cloth spreading machine, driving the first gear 84, the second gear 86 and the third gear 87 to rotate, so as to realize the outward opening or inward contraction of the first flattening member 41 and the second flattening member 42. In the process of the rack 83 moving to the left or right, the first gear 84 and the second gear 86 rotate in the same direction, and the third gear 87 meshing with the second gear 86 rotates in the opposite direction to the two. Therefore, the third gear 87 meshing with the second gear 86 can make the first flattening member 41 and the second flattening member 42 rotate in the opposite direction, and the two move towards each other (i.e., shrink inward at the same time) or move away from each other (i.e., open outward at the same time). In the process of moving away from each other, wrinkles or curling on the cloth are eliminated, and the cloth is opened from the inside to the outside.

[0074] The rack displacement drive mechanism 7 has various forms. It can be a linear displacement drive member (such as a linear motor, a hydraulic cylinder or a pneumatic cylinder) arranged at one end of the rack 83, driving the rack 83 to move left and right; it can also include a rotary drive member 71 and a connecting rod 81 driven to swing by the rotary drive member 71, the connecting rod 81 is hinged to the rack 83, and the connecting rod 81 drives the rack 83 to move left and right.

[0075] In a specific embodiment of the present invention, Figure 3 and Figure 4As shown, the rack displacement driving mechanism 7 includes a rotary driving member 71, a worm 712 coaxially connected to the output shaft of the rotary driving member 71, a worm wheel 72 meshing with the worm 712, a crank 73 arranged on the worm wheel 72, and a connecting rod 81 hinged with the crank 73, and the other end of the connecting rod 81 is hinged with the rack 83. The rotary driving member 71 drives the worm 712 to rotate, and the helical teeth 712a on the worm 712 mesh with the worm wheel 72 to drive the worm wheel 72 to rotate, and the connecting rod 81 swings, driving the rack 83 to move left and right. In addition, the rack displacement driving mechanism 7 also includes a housing 75, and a pressure ring 752, a rotating cover 751 and a worm wheel 72 are sequentially arranged in the housing 75 from the outside to the inside. The housing 75 is installed on the connecting mechanism 5 through a mounting plate 753. The worm 712 is rotatably connected to the housing 75 through a bearing 713. The worm wheel 72 is provided with a limiting groove 721, and the crank 73 is installed in the limiting groove 721. A crank pin 731 is provided at one end of the crank 73, and a spacer sleeve 732 is sleeved on the outer side of the crank pin 731. The end of the crank pin 731 passes through the limiting hole on the rotating cover 751 and extends to the outside of the housing 75. The end of the connecting rod 81 is clamped on the spacer sleeve 732 through a retaining ring 733. At the same time, the worm wheel shaft 74 passes through the rotating cover 751, the crank 73 and the worm wheel 72 in sequence, one end of which is rotatably connected to the rotating cover 751 through a first bearing 741, and the other end is rotatably connected to the housing 75 through a second bearing 742. When the worm gear 72 rotates, the crank 73 rotates synchronously with the worm gear 72 due to the limiting effect of the limiting groove 721, driving the connecting rod 81 to swing; at the same time, the rotating cover 751 rotates synchronously with the crank pin 731, which can prevent external dust from entering the interior of the shell 75, and the pressure ring 752 is used to prevent the rotating cover 751 from separating from the shell 75, limiting the displacement of the rotating cover 751 in the up and down directions.

[0076] In addition to the above method, the worm gear may be replaced by a gear rack or a gear belt to achieve the purpose of driving the connecting rod 81 to swing by the rotating driving member 71, thereby driving the rack 83 to move left and right.

[0077] In order to accommodate the rack 83, the cross section of the connecting mechanism 5 is U-shaped, which can limit the displacement of the rack 83 in the up and down directions, but does not affect the movement of the rack 83 in the left and right directions. Figure 3 , Figure 5-7 As shown, the first end of the connecting mechanism 5 is provided with a first slide groove 51, and the second end is provided with a second slide groove 52. The extension direction of the first slide groove 51 and the second slide groove 52 is parallel to the width direction of the paving machine. The end of the rack 83 close to the first gear 84 is hinged to the connecting rod 81 through a connecting rod pin 82, and the connecting rod pin 82 is slidably set in the first slide groove 51. The end of the rack 83 close to the second gear 86 is provided with a guide pin 831, and the guide pin 831 is slidably set in the second slide groove 52. Through the cooperation of the connecting rod pin 82 and the first slide groove 51, and the guide pin 831 and the second slide groove 52, it is ensured that the moving direction of the rack 83 does not deviate.

[0078] In order to realize the automatic flattening of the cloth, the utility model further includes an upper position sensor 61 and a lower position sensor 62. The upper position sensor 61 is used to detect whether the connecting mechanism 5 moves to the upper dead center. When the connecting mechanism 5 is at the upper dead center, the distance between the flattening mechanism 4 and the cloth allows the flattening mechanism 4 to flatten the cloth; the lower position sensor 62 is used to detect whether the connecting mechanism 5 moves to the lower dead center. When the connecting mechanism 5 is at the lower dead center, the distance between the flattening mechanism 4 and the cloth does not allow the flattening mechanism 4 to apply force to the cloth. The upper position sensor 61 and the lower position sensor 62 can be installed at the end of the connecting mechanism 5, or as in one embodiment of the utility model, the lifting drive mechanism 3 includes a cylinder, and the upper position sensor 61 and the lower position sensor 62 are installed on the cylinder. The upper position sensor 61 is used to detect whether the cylinder piston is retracted to the position. When the piston is retracted to the position, the connecting mechanism 5 moves to the upper dead center; the lower position sensor 62 is used to detect whether the cylinder piston is extended to the position. When the piston is extended to the position, the connecting mechanism 5 moves to the lower dead center. At the same time, a first in-position sensor 63 is also provided at the first end edge of the connecting mechanism 5. The first in-position sensor 63 is used to detect whether the rack 83 moves to the first stop point. When the rack 83 moves to the first stop point, the first flattening piece 41 and the second flattening piece 42 shrink inward to the minimum state, and both ends point to the middle of the cloth; a second in-position sensor 64 is also provided at the second end edge of the connecting mechanism 5. The second in-position sensor 64 is used to detect whether the rack 83 moves to the second stop point. When the rack 83 moves to the second stop point, the first flattening piece 41 and the second flattening piece 42 expand outward to the maximum state, and both ends point to the left edge or the right edge of the cloth.

[0079] Furthermore, the utility model further includes a controller, which is respectively connected to the upper in-position sensor 61, the lower in-position sensor 62, the first in-position sensor 63, and the second in-position sensor 64 by signals, and is connected to the lifting drive mechanism 3 and the rack displacement drive mechanism 7. After receiving the corresponding signals from the upper in-position sensor 61, the lower in-position sensor 62, the first in-position sensor 63, and the second in-position sensor 64, the controller can control the working state of the lifting drive mechanism 3 and the rack displacement drive mechanism 7 to realize automatic flattening of the cloth.

[0080] The control method of the automatic flattening device of the aforementioned cloth spreading machine comprises the following steps:

[0081] S1, such as Figure 2 and Figure 6As shown, the lifting drive mechanism 3 is controlled to drive the connecting mechanism 5 to rise, and after the upper in-position sensor 61 detects that the connecting mechanism 5 moves to the upper dead center, the rack displacement drive mechanism 7 is controlled to work, driving the rack 83 to move in the first direction, and the first flattening member 41 and the second flattening member 42 gradually shrink inwards. When the first in-position sensor 63 detects that the rack 83 moves to the first dead center, the rack displacement drive mechanism 7 is controlled to stop working, and at this time, the first flattening member 41 and the second flattening member 42 shrink inwards to the minimum state, and this state is defined as the initial state;

[0082] S2, such as Figure 2 and Figure 7 As shown, after the cloth spreading machine spreads the cloth, the lifting drive mechanism 3 is controlled to drive the connecting mechanism 5 to descend, and after the down-to-place sensor 62 detects that the connecting mechanism 5 has moved to the lower dead point, the rack displacement drive mechanism 7 is controlled to work, driving the rack 83 to move in the second direction, and the first flattening member 41 and the second flattening member 42 are gradually opened outward to make the cloth flat, and after the second in-place sensor 64 detects that the rack 83 has moved to the second dead point, the rack displacement drive mechanism 7 is controlled to stop working, and at this time, the first flattening member 41 and the second flattening member 42 are opened outward to the maximum state;

[0083] S3, repeat the above steps S1 and S2 until the spreading machine stops spreading the cloth.

[0084] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An automatic flattening device for a cloth spreading machine, characterized in that: include: A lifting drive mechanism is mounted on a crossbeam, and the crossbeam is arranged between two mounting brackets of the paving machine; The connecting mechanism extends along the width direction of the cloth spreading machine and performs lifting motion under the drive of the lifting drive mechanism; The first end of the connecting mechanism is provided with a first gear, and the second end is provided with a second gear and a third gear, and the second gear and the third gear are meshed with each other; A rack extending in the width direction of the paving machine and arranged in the connecting mechanism; One end of the rack is meshed with the first gear for transmission, and the other end is meshed with the second gear for transmission; A flattening mechanism, used to flatten the cloth, comprising a first flattening member and a second flattening member, wherein an end of the first flattening member is connected to the first gear, and an end of the second flattening member is connected to the third gear; The rack displacement drive mechanism is used to drive the rack to move along the width direction of the spreading machine, drive the first gear, the second gear and the third gear to rotate, and realize the outward expansion or inward contraction of the first flattening member and the second flattening member.

2. The automatic flattening device for a cloth spreading machine according to claim 1, characterized in that: The rack displacement driving mechanism comprises a rotary driving member and a connecting rod driven to swing by the rotary driving member, wherein the connecting rod is hinged to the rack.

3. The automatic flattening device for fabric spreading machine according to claim 2, characterized in that: The rack displacement drive mechanism also includes a worm coaxially connected to the output shaft of the rotary drive member, a worm wheel meshing with the worm, and a crank arranged on the worm wheel, wherein the crank is hinged to the connecting rod.

4. The automatic flattening device for a cloth spreading machine according to claim 2, characterized in that: A first slide groove is formed at the first end of the connecting mechanism, and a second slide groove is formed at the second end, and the extension directions of the first slide groove and the second slide groove are parallel to the width direction of the spreading machine; one end of the rack close to the first gear is hinged to the connecting rod through a connecting rod pin, and the connecting rod pin is slidably set in the first slide groove; one end of the rack close to the second gear is provided with a guide pin, and the guide pin is slidably set in the second slide groove.

5. The automatic flattening device for fabric spreading machine according to claim 1, characterized in that: It also includes an upper in-position sensor and a lower in-position sensor, the upper in-position sensor is used to detect whether the connecting mechanism moves to the upper dead point, and the lower in-position sensor is used to detect whether the connecting mechanism moves to the lower dead point; the first end edge of the connecting mechanism is also provided with a first in-position sensor, which is used to detect whether the rack moves to the first dead point; the second end edge of the connecting mechanism is also provided with a second in-position sensor, which is used to detect whether the rack moves to the second dead point.

6. The automatic flattening device for fabric spreading machine according to claim 5, characterized in that: The lifting drive mechanism comprises a cylinder, and the upper position sensor and the lower position sensor are mounted on the cylinder.

7. The automatic flattening device for a cloth spreading machine according to claim 5, characterized in that: The invention also includes a controller, which is respectively connected to the upper in-position sensor, the lower in-position sensor, the first in-position sensor and the second in-position sensor by signal.

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