Rear vehicle centering device of desizing machine

Abstract

The utility model provides a desizing machine rear vehicle centering device which comprises two guide rollers which are arranged in parallel, and cloth penetrates through a gap between the two guide rollers; cloth penetrates through a gap between the two swing rollers and makes contact with the two swing rollers, and a plurality of adsorption holes are formed in each swing roller. The negative pressure unit is used for providing negative pressure for the adsorption holes; and the driving part is used for driving the two swing rollers to move left and right. Through the arrangement of the negative pressure unit and the adsorption holes, on one hand, cloth can be adsorbed through the adsorption holes, and the friction force between the cloth and the swing roller is improved; on the other hand, when external air enters the adsorption holes, the peripheries of the adsorption holes can be rapidly dried, and the friction force between the cloth and the swing roller is further improved; in addition, due to the distribution of the adsorption holes, the friction point position between the cloth and the swing roller is controllable, and wrinkles of the cloth can be greatly reduced during centering operation.

Description

Technical Field

[0001] The utility model relates to the technical field of desizing machines, in particular to a rear vehicle centering device for a desizing machine. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The desizing machine is mainly used to desize the grey cloth before textile printing and dyeing to remove the sizing liquid on the grey cloth. When working, the wet cloth passing through the steamer will pass through a centering device during its movement. The centering device is two swing rollers that can move left and right. The wet cloth passes through the gap between the two swing rollers and contacts with the two swing rollers, driving the swing rollers to rotate (a motor can also be set to drive the swing rollers to rotate). The left and right movement of the swing rollers can make the traveling wet cloth move left and right, thereby centering the wet cloth and ensuring that the traveling trajectory of the wet cloth does not produce a large deviation.

[0004] However, the wet cloth passing through the steamer is prone to slipping when it comes into contact with the swing roller, the friction between the wet cloth and the swing roller is insufficient, and the position adjustment speed of the wet cloth is slow; the friction points between the wet cloth and the swing roller are uncontrollable, and when the swing roller is working, the cloth is prone to wrinkles (that is, when moving to one side, part of the cloth moves faster, causing folds with the cloth on the other side that moves slower).

[0005] Therefore, the present application specifically proposes a desizing machine rear car centering device to solve the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a desizing machine rear car centering device which can improve the friction between the wet cloth and the swing roller and has controllable friction points.

[0007] To achieve the above purpose, the technical solution of the utility model is implemented as follows: a desizing machine rear car centering device, comprising:

[0008] There are two guide rollers, which are arranged in parallel, and the fabric passes through the gap between the two guide rollers;

[0009] Two swing rollers, the fabric passes through the gap between the two swing rollers and contacts the two swing rollers, and each swing roller is provided with a plurality of adsorption holes;

[0010] A negative pressure unit, used for providing negative pressure to the adsorption holes;

[0011] The driving component is used to drive the two swing rollers to move left and right.

[0012] Furthermore, the plurality of adsorption holes are arranged in a plurality of rows along the length direction of the swing roller, and the plurality of rows of adsorption holes are distributed in a ring around the outer wall of the swing roller. The end of the swing roller is provided with a plurality of conducting holes, and the plurality of conducting holes correspond to the plurality of rows of adsorption holes one by one and are connected to the plurality of adsorption holes in the corresponding rows, so as to transmit negative pressure to the corresponding adsorption holes.

[0013] Both ends of the swing roller are provided with connecting plates, and the same end of the two swing rollers is rotatably connected to the same connecting plate. A negative pressure chamber is opened on one side of the connecting plate corresponding to each swing roller, and the negative pressure chamber is close to the side of the swing roller in contact with the cloth. When the adsorption hole rotates to face the cloth, the corresponding conducting hole rotates to the negative pressure chamber and conducts with the negative pressure chamber.

[0014] The negative pressure unit is communicated with the negative pressure chamber.

[0015] Furthermore, the adsorption holes on the swing roller are divided into two groups from the middle of the swing roller to both ends. When the swing roller moves to the left, the adsorption holes in the left group are connected to the negative pressure unit. When the swing roller moves to the right, the adsorption holes in the right group are connected to the negative pressure unit.

[0016] Furthermore, a connection hole is opened on one side of the negative pressure chamber, one end of the connection hole passes through the side wall of the negative pressure chamber, and the other end is used to connect with the negative pressure unit;

[0017] A sealing plate is arranged in the negative pressure chamber, the sealing plate is slidably arranged in the negative pressure chamber and is sealed in the negative pressure chamber, a connecting rod is arranged on the connecting plate, the connecting rod can move in the direction of approaching and moving away from the swing roller on the connecting plate, the connecting rod is connected to the sealing plate and the driving component, and the driving component drives the swing roller to move left and right through the connecting rod;

[0018] When the driving component drives the connecting rod to move in a direction close to the swing roller, the connecting rod drives the sealing plate to slide in the negative pressure chamber to the side of the swing roller corresponding to the connecting hole, thereby preventing the negative pressure in the corresponding negative pressure chamber from being transmitted to the corresponding adsorption hole; when the driving component drives the connecting rod to move in a direction away from the swing roller, the connecting rod drives the sealing plate to slide in the negative pressure chamber to the side of the connecting hole away from the swing roller, thereby transmitting the negative pressure in the corresponding negative pressure chamber to the corresponding adsorption hole.

[0019] Furthermore, the driving component includes a cross bar arranged on the desizing machine, and a motor and two swing arms are arranged on the cross bar, one end of the two swing arms are respectively connected to the connecting plates at both ends of the swing roller, the other end of one of the swing arms is rotatably connected to the cross bar, and the end of the other swing arm is connected to the output end of the motor.

[0020] Furthermore, the swing arm is composed of a rocker arm and a connecting block, the rocker arm is rotatably matched with one end of the connecting block, and the other end of the connecting block is rotatably matched with the connecting rod, a plurality of first limiting holes are provided on one side of the connecting plate corresponding to the connecting block, the plurality of first limiting holes are arc-shapedly distributed on the connecting plate and the center of the arc coincides with the rotation center of the connecting rod, a second limiting hole is provided on the connecting block, and the movement trajectory of the second limiting hole coincides with that of the first limiting hole; and a limiting member is also included, the limiting member penetrates into the second limiting hole and the corresponding first limiting hole to limit the relative position of the connecting plate and the connecting block.

[0021] The beneficial effects of the utility model are embodied in:

[0022] The utility model, through the arrangement of the negative pressure unit and the adsorption holes, can, on the one hand, adsorb the cloth through the adsorption holes to increase the friction between the cloth and the swing roller; on the other hand, when the external air enters the adsorption holes, it can quickly dry the area around the adsorption holes to further increase the friction between the cloth and the swing roller; in addition, the distribution of the adsorption holes makes the friction points between the cloth and the swing roller controllable, which can greatly reduce the generation of cloth wrinkles during centering operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the attached picture:

[0024] Figure 1 It is a working schematic diagram of the rear car centering device of the desizing machine described in the utility model;

[0025] Figure 2 It is a partial exploded view of the rear car centering device of the desizing machine described in the utility model;

[0026] Figure 3 This is a structural view of the connecting plate described in the utility model.

[0027] Description of reference numerals:

[0028] 1. Guide roller; 2. Swing roller; 21. Adsorption hole; 22. Conducting hole; 3. Driving component; 31. Motor; 32. Swing arm; 321. Swing rod; 322. Connecting block; 323. Second limit hole; 33. Limiting member; 4. Connecting plate; 41. Negative pressure chamber; 42. Connecting hole; 43. Sealing plate; 44. Connecting rod; 45. First limit hole; 5. Cross bar. DETAILED DESCRIPTION

[0029] The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figures 1 to 3 .

[0031] The utility model discloses a desizing machine rear car centering device, comprising:

[0032] There are two guide rollers 1, which are arranged in parallel, and the fabric passes through the gap between the two guide rollers 1;

[0033] Two swing rollers 2, the cloth passes through the gap between the two swing rollers 2 and contacts the two swing rollers 2, and each swing roller 2 is provided with a plurality of adsorption holes 21 for adsorbing the cloth and increasing the friction between the cloth and the swing roller 2;

[0034] A negative pressure unit (not shown in the figure), used to provide negative pressure for the adsorption hole 21;

[0035] The driving component 3 is used to drive the two swing rollers 2 to move left and right.

[0036] During the centering operation, the driving component 3 is started to drive the two swing rollers 2 to move left and right, and at the same time the negative pressure unit is started and connected with the corresponding adsorption holes 21 to provide negative pressure for the adsorption holes 21; the cloth is guided by the guide roller 1, passes through the gap between the two swing rollers 2 and contacts the two swing rollers 2, and the cloth is adsorbed by the adsorption holes 21, thereby increasing the friction between the cloth and the swing roller 2, and the setting of the adsorption holes 21 can ensure that the friction point between the cloth and the swing roller 2 is controllable, which can greatly reduce the generation of cloth wrinkles during the centering operation.

[0037] In the present application, through the setting of the negative pressure unit and the adsorption holes 21, on the one hand, the cloth can be adsorbed through the adsorption holes 21 to increase the friction between the cloth and the swing roller 2; on the other hand, when the external air enters the adsorption holes 21, the area around the adsorption holes 21 can be quickly dried (usually, the outer side of the swing roller 2 will be covered with a layer of rubber, glue, etc., which has a greater friction after drying), thereby further increasing the friction between the cloth and the swing roller 2 (using a smaller adsorption force to obtain a larger friction); in addition, the distribution of the adsorption holes 21 makes the friction points between the cloth and the swing roller 2 controllable, which can greatly reduce the generation of cloth wrinkles during centering operations.

[0038] It should be noted that the adsorption holes 21 in the present application do not need much adsorption force, and only need to make the cloth contact with the swing roller 2 without slipping, and the cloth can continue to fall under the action of its own gravity, or can continue to move under the action of traction. It should be pointed out that the connection between the guide roller 1, the swing roller 2 and the driving component 3 and the desizing machine is common knowledge to those skilled in the art, and this article does not involve the improvement of the connection part with the desizing machine.

[0039] In one embodiment, the plurality of adsorption holes 21 are arranged in a plurality of rows along the length direction of the swing roller 2, and the plurality of rows of adsorption holes 21 are distributed in a ring around the outer wall of the swing roller 2. The end of the swing roller 2 is provided with a plurality of conducting holes 22, and the plurality of conducting holes 22 correspond to the plurality of rows of adsorption holes 21 one by one and are connected to the plurality of adsorption holes 21 in the corresponding rows, so as to transmit negative pressure to the corresponding adsorption holes 21.

[0040] The two ends of the swing roller 2 are provided with connecting plates 4, and the same end of the two swing rollers 2 is rotatably connected to the same connecting plate 4. A negative pressure chamber 41 is opened on one side of the connecting plate 4 corresponding to each swing roller 2. The negative pressure chamber 41 is close to the side of the swing roller 2 in contact with the cloth. When the adsorption hole 21 rotates toward the cloth direction, the corresponding conductive hole 22 rotates to the negative pressure chamber 41 and is connected to the negative pressure chamber 41; when the adsorption hole 21 rotates away from the cloth direction, the corresponding conductive hole 22 is separated from the negative pressure chamber 41 and is not connected to the negative pressure chamber 41.

[0041] The negative pressure unit is connected to the negative pressure chamber 41 through a connecting pipe. This design can prevent the adsorption holes 21 on the side away from the cloth from generating adsorption force, thereby reducing the output power of the negative pressure unit without affecting normal operation.

[0042] In one embodiment, the adsorption holes 21 on the swing roller 2 are divided into two groups from the middle of the swing roller 2 to both ends. When the swing roller 2 moves to the left, the adsorption holes 21 in the left group are connected to the negative pressure unit, and when the swing roller 2 moves to the right, the adsorption holes 21 in the right group are connected to the negative pressure unit. In this design, when the swing roller 2 moves, only the adsorption holes 21 on one side are connected to the negative pressure unit and the other side is not connected, so that the swing roller 2 has an effect of pulling the cloth to one side, which further reduces the possibility of cloth wrinkles and ensures the smoothness of the cloth.

[0043] In one embodiment, a connection hole 42 is opened on one side of the negative pressure chamber 41, one end of the connection hole 42 passes through the side wall of the negative pressure chamber 41, and the other end is used to connect with the negative pressure unit;

[0044] A sealing plate 43 is arranged in the negative pressure chamber 41, and the sealing plate 43 is slidably arranged in the negative pressure chamber 41 and is sealed with the negative pressure chamber 41. A connecting rod 44 is arranged on the connecting plate 4, and the connecting rod 44 can move on the connecting plate 4 toward and away from the swing roller 2. The connecting rod 44 is connected to the sealing plate 43 and the driving component 3, and the driving component 3 drives the swing roller 2 to move left and right through the connecting rod 44.

[0045] When the driving component 3 drives the connecting rod 44 to move in a direction close to the swing roller 2, the connecting rod 44 drives the sealing plate 43 to slide in the negative pressure chamber 41 to the side of the connecting hole 42 corresponding to the swing roller 2, thereby preventing the negative pressure in the corresponding negative pressure chamber 41 from being transmitted to the corresponding adsorption hole 21; when the driving component 3 drives the connecting rod 44 to move in a direction away from the swing roller 2, the connecting rod 44 drives the sealing plate 43 to slide in the negative pressure chamber 41 to the side of the connecting hole 42 away from the swing roller 2, thereby allowing the negative pressure in the corresponding negative pressure chamber 41 to be transmitted to the corresponding adsorption hole 21.

[0046] It can be understood that the connecting rod 44 can be directly connected to each sealing plate 43, and a cavity is provided in the connecting plate 4 for the movement of the connecting rod 44.

[0047] Preferably, the negative pressure unit adopts conventional negative pressure equipment such as a negative pressure machine, a negative pressure pump, etc. in the prior art.

[0048] In one embodiment, the driving component 3 includes a crossbar 5 provided on the desizing machine, and a motor 31 and two swing arms 32 are provided on the crossbar 5, one end of the two swing arms 32 are respectively connected to the connecting plates 4 at both ends of the swing roller 2, the other end of one swing arm 32 is rotatably connected to the crossbar 5, and the end of the other swing arm 32 is connected to the output end of the motor 31. In this design, the swing arm 32 is driven to swing by the motor 31, and then the swing roller 2 is driven to swing, so that the swing roller 2 is displaced left and right.

[0049] In one embodiment, the swing arm 32 is composed of a swing rod 321 and a connecting block 322, the swing rod 321 is rotatably matched with one end of the connecting block 322, and the other end of the connecting block 322 is rotatably matched with the connecting rod 44, and a plurality of first limiting holes 45 are provided on one side of the corresponding connecting block 322 of the connecting plate 4, and the plurality of first limiting holes 45 are distributed in an arc shape on the connecting plate 4 and the center of the arc coincides with the rotation center of the connecting rod 44, and a second limiting hole 323 is provided on the connecting block 322, and the second limiting hole 323 coincides with the movement trajectory of the first limiting hole 45; and also includes a limiting member 33, which penetrates into the second limiting hole 323 and the corresponding first limiting hole 45 to limit the relative position of the connecting plate 4 and the connecting block 322.

[0050] In a specific implementation, before the limiting member 33 is inserted, the position of the two swing rollers 2 relative to the cloth can be adjusted by rotating the connecting plate 4, thereby changing the contact surface between the swing roller 2 and the cloth and the size of the friction force; since the present application adopts a structure in which the adsorption holes 21 adsorb the cloth, when adjusting the rotation angle of the connecting plate 4, the connecting plate 4 can be limited in a manner similar to a fixed gear as described in the text (that is, the connecting plate 4 can only be limited when it is rotated to the fixed angles). Even if this form of only being able to rotate and fix sometimes makes the swing roller 2 not so close to the cloth, the structural form of the adsorption of the swing roller 2 of the present application can well make up for this deficiency; if the present case does not adopt the design of the adsorption holes 21, the corresponding limiting structure can only adopt a method of steplessly adjusting the rotation angle of the connecting plate 4 (that is, the connecting plate 4 can be limited when it is rotated to any angle), but the structure of the method of steplessly adjusting the rotation angle of the connecting plate 4 is relatively complex, and since the swing arm 32 is swinging for a long time and continuously, its reliability is not as good as the limiting form of the present application.

[0051] Preferably, at least one of the first limiting hole 45 and the second limiting hole 323 is a screw hole, and the limiting member 33 is a bolt. Since the swing arm 32 is constantly swinging during operation, the limiting method using bolts is more reliable.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0053] It should be noted that if the utility model embodiment involves directional indications (such as up and down), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

Claims

1. A desizing machine rear car centering device, characterized in that: include: There are two guide rollers (1), the two guide rollers (1) are arranged in parallel, and the cloth passes through the gap between the two guide rollers (1); Two swing rollers (2), the cloth passes through the gap between the two swing rollers (2) and contacts the two swing rollers (2), and each swing roller (2) is provided with a plurality of adsorption holes (21); A negative pressure unit, used for providing negative pressure to the adsorption hole (21); The driving component (3) is used for driving the two swing rollers (2) to move left and right.

2. The desizing machine rear car centering device according to claim 1, characterized in that: A plurality of adsorption holes (21) are arranged in a plurality of rows along the length direction of the swing roller (2), the plurality of rows of adsorption holes (21) are distributed in a ring shape around the outer wall of the swing roller (2), a plurality of conducting holes (22) are provided at the end of the swing roller (2), the plurality of conducting holes (22) correspond to the plurality of rows of adsorption holes (21) one by one and are connected to the plurality of adsorption holes (21) in the corresponding rows, and are used to transmit negative pressure to the corresponding adsorption holes (21); A connecting plate (4) is provided at both ends of the swing roller (2), and the same end of the two swing rollers (2) is rotatably connected to the same connecting plate (4). A negative pressure chamber (41) is provided on one side of the connecting plate (4) corresponding to each swing roller (2), and the negative pressure chamber (41) is close to the side of the swing roller (2) in contact with the cloth. When the adsorption hole (21) rotates to face the cloth, the corresponding conducting hole (22) rotates to the negative pressure chamber (41) and conducts with the negative pressure chamber (41); The negative pressure unit is in communication with the negative pressure chamber (41).

3. The desizing machine rear car centering device according to claim 2, characterized in that: The adsorption holes (21) on the swing roller (2) are divided into two groups from the middle of the swing roller (2) to both ends. When the swing roller (2) moves to the left, the adsorption holes (21) in the left group are connected to the negative pressure unit. When the swing roller (2) moves to the right, the adsorption holes (21) in the right group are connected to the negative pressure unit.

4. The desizing machine rear car centering device according to claim 3, characterized in that: A connection hole (42) is provided on one side of the negative pressure chamber (41), one end of the connection hole (42) passes through the side wall of the negative pressure chamber (41), and the other end is used to be connected to the negative pressure unit; A sealing plate (43) is arranged in the negative pressure chamber (41), and the sealing plate (43) is slidably arranged in the negative pressure chamber (41) and is sealed with the negative pressure chamber (41). A connecting rod (44) is arranged on the connecting plate (4), and the connecting rod (44) can move on the connecting plate (4) in a direction close to and away from the swing roller (2). The connecting rod (44) is connected to the sealing plate (43) and the driving component (3), and the driving component (3) drives the swing roller (2) to move left and right through the connecting rod (44); When the driving component (3) drives the connecting rod (44) to move in a direction close to the swing roller (2), the connecting rod (44) drives the sealing plate (43) to slide in the negative pressure chamber (41) to the side of the connecting hole (42) corresponding to the swing roller (2), thereby preventing the negative pressure in the corresponding negative pressure chamber (41) from being transmitted to the corresponding adsorption hole (21); when the driving component (3) drives the connecting rod (44) to move in a direction away from the swing roller (2), the connecting rod (44) drives the sealing plate (43) to slide in the negative pressure chamber (41) to the side of the connecting hole (42) away from the swing roller (2), thereby causing the negative pressure in the corresponding negative pressure chamber (41) to be transmitted to the corresponding adsorption hole (21).

5. The desizing machine rear car centering device according to claim 4, characterized in that: The driving component (3) comprises a cross bar (5) arranged on the desizing machine, the cross bar (5) being provided with a motor (31) and two swing arms (32), one end of the two swing arms (32) being respectively connected to the connecting plates (4) at the two ends of the swing roller (2), the other end of one of the swing arms (32) being rotationally connected to the cross bar (5), and the end of the other swing arm (32) being connected to the output end of the motor (31).

6. The desizing machine rear car centering device according to claim 5, characterized in that: The swing arm (32) is composed of a swing rod (321) and a connecting block (322). The swing rod (321) is rotatably matched with one end of the connecting block (322). The other end of the connecting block (322) is rotatably matched with the connecting rod (44). A plurality of first limiting holes (45) are provided on one side of the connecting plate (4) corresponding to the connecting block (322). The plurality of first limiting holes (45) are arc-shapedly distributed on the connecting plate (4) and the center of the arc coincides with the rotation center of the connecting rod (44). A second limiting hole (323) is provided on the connecting block (322). The movement trajectory of the second limiting hole (323) coincides with that of the first limiting hole (45). The swing arm (32) also includes a limiting member (33). The limiting member (33) penetrates into the second limiting hole (323) and the corresponding first limiting hole (45) to define the relative position of the connecting plate (4) and the connecting block (322).

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