Film unwinding and traction device

Abstract

The utility model discloses a thin film unwinding and traction device which comprises a rack, a horizontal guide rail, a sliding seat, a pair of connecting arms, a winding roller, at least one upper and lower roll driver, an upper supporting arm, a first guide wheel set, a deviation rectifying sensor, a transmission roller set, a deviation rectifying executing mechanism and a deviation rectifying controller, and the rack is provided with two side supporting parts which are oppositely arranged; the horizontal guide rail stretches across and is fixedly installed on the supporting parts on the two sides. The sliding seat is connected to the horizontal guide rail in a sliding manner; one ends of the pair of connecting arms are respectively hinged with the sliding seat; two ends of the winding roller are respectively hinged between the other ends of the pair of connecting arms; one end of the roll-up and roll-down driver is hinged to the sliding seat, and the other end of the roll-up and roll-down driver is hinged to the middle position of one of the connecting arms; and the upper support arm is fixedly mounted on the sliding seat. The unwinding and traction device can integrate the unwinding function and the traction function, meanwhile, deviation in the conveying process is avoided, and the stability of thin film conveying is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of film unwinding and traction device, belong to unwinding traction device technical field. BACKGROUND

[0002] At present, film unwinding and traction device is widely used in the production line of printing, packaging, compounding, coating and other industries, and is the key equipment to ensure the stable conveying of film materials. Its main function is to smoothly expand and convey the film material wound into a roll to the subsequent workstations. In production practice, film unwinding and traction are often two independent structures designed separately, but due to the separate design, it occupies a large area, and during the transmission process between the two structures, the film is prone to uneven tension, deviation and wrinkling, etc., which seriously affects the production efficiency and product quality, and affects the accuracy of subsequent processing procedures.

[0003] After searching the prior art, it was found that a film unwinding and traction device for a film wrapping machine was disclosed in Chinese Patent No. CN204606329U. This patent achieves stable film conveying through an unwinding mechanism, a guide roller mechanism, and a traction storage mechanism. However, during use, it was found that the film was prone to deviation, making it difficult to meet the processing requirements of the film. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a film unwinding and traction device that integrates unwinding and traction functions and avoids deviation during transmission, ensuring the stability of film conveying.

[0005] To solve the above technical problems, the technical solution of the utility model is as follows: a film unwinding and traction device, comprising:

[0006] a rack having two side support parts arranged opposite to each other;

[0007] a horizontal guide rail spanning and fixedly installed on the two side support parts;

[0008] a sliding seat slidingly connected to the horizontal guide rail;

[0009] a pair of connecting arms, one end of each connecting arm being hingedly connected to the sliding seat;

[0010] a winding roller, both ends of the winding roller being hingedly connected between the other ends of the pair of connecting arms;

[0011] at least one up-down winding drive, one end of the up-down winding drive being hingedly connected to the sliding seat, and the other end being hingedly connected to the middle part of one of the connecting arms;

[0012] An upper supporting arm is fixedly installed on the sliding base;

[0013] A first guide wheel set is installed on the upper supporting arm, and forms a first conveying channel on the upper supporting arm;

[0014] A deviation correction sensor is installed between the first guide wheel set, and is adapted to detect the film on the first conveying channel and send a detection signal;

[0015] A transmission roller set is installed on the frame;

[0016] A deviation correction execution mechanism is arranged on the frame, one end of which is hingedly connected to the frame, and the other end is hingedly connected to the sliding base;

[0017] A deviation correction controller is arranged on the frame, and is electrically connected to the deviation correction sensor and the deviation correction execution mechanism, and is adapted to control the operation of the deviation correction execution mechanism according to the detection signal of the deviation correction sensor;

[0018] The film on the winding roller passes through the first guide wheel set and the transmission roller set in sequence to form a unwinding channel.

[0019] Further, a specific structure of an adjusting roller assembly is provided, and the film unwinding and traction device further comprises at least one adjusting roller assembly, which comprises:

[0020] A vertical guide rail is fixedly installed on one side of the supporting part of the frame;

[0021] A connecting frame is arranged on one side of the vertical guide rail, and the connecting frame is provided with a connecting hole;

[0022] A first sliding block is slidingly arranged on the vertical guide rail, and a screw hole is arranged on the vertical surface of the first sliding block;

[0023] A first adjusting screw rod passes through the connecting hole of the connecting frame and the screw hole of the first sliding block to drive the first sliding block to move on the vertical guide rail;

[0024] A horizontal guide rail is fixedly arranged on the other side of the supporting part of the frame;

[0025] A second sliding block is slidingly arranged on the horizontal guide rail, and a second screw hole is arranged on the second sliding block;

[0026] A second connecting frame is arranged on one side of the horizontal guide rail, and a second connecting hole is arranged on the second connecting frame.

[0027] A second adjusting screw is adapted to be screwed through the second connecting hole and the second screw hole of the second slider to drive the second slider to move on the horizontal guide rail.

[0028] An adjusting roller body is rotatably mounted between the first slider and the second slider.

[0029] Further, a specific structure of a swing roller assembly is provided, and the film unwinding and traction device further comprises a swing roller assembly, which comprises:

[0030] A pair of swing arms are hingedly connected to the support portions of the corresponding racks at one end;

[0031] At least one horizontal support is mounted on the rack, and two vertical supports are arranged on the horizontal support, and adjusting holes are arranged on the vertical supports;

[0032] At least one set of adjusting screws is arranged in the adjusting holes of the vertical supports, and the end portions of the adjusting screws abut against the swing arms and are adapted to adjust the swing angle of the swing arms;

[0033] A movable roller is hingedly connected between the other ends of the pair of swing arms.

[0034] Further, the film unwinding and traction device further comprises a corona machine, which is mounted on the rack and located on the unwinding channel.

[0035] Further, a specific type of deviation rectification execution mechanism is provided, which is a screw linear stepping motor.

[0036] Further, a specific structure of a transmission roller group is provided, and the transmission roller group comprises at least one guide roller and a driving roller group, and the driving roller group comprises:

[0037] A fixed frame is mounted on one side of the rack;

[0038] A driver is mounted on the fixed frame;

[0039] A driving gear is in transmission connection with the driver;

[0040] A driven gear is in meshing connection with the driving gear;

[0041] A driving roller is hingedly connected between the two side support portions of the rack, and the driving roller is coaxially connected with the driving gear.

[0042] A driven roller is hinged between the two side supports of the frame, and is coaxially connected with the driven gear.

[0043] Further, a specific type of up-down winding drive is provided, which is a pneumatic cylinder or an oil cylinder.

[0044] Further, the film unwinding and traction device further comprises a winding roller driving mechanism, which comprises:

[0045] A driving motor is mounted on one of the connecting arms;

[0046] A main transmission gear is rotatably mounted on the connecting arm and is in transmission connection with the driving motor;

[0047] A slave transmission gear is rotatably mounted on the connecting arm, is in meshing connection with the main transmission gear, and is in transmission connection with the winding roller.

[0048] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0049] In the utility model, the horizontal guide rail is supported by the frame, the sliding seat is slidably connected to the horizontal guide rail, and the sliding seat and the winding roller are connected by a pair of connecting arms, so that the horizontal adjustment of the winding roller is realized. The deviation correction sensor is used for detecting the position of the film and sending a detection signal, and the deviation correction controller controls the deviation correction execution mechanism to adjust the position of the sliding seat according to the detection signal, so that the film is aligned with the conveying track, and deviation correction is realized. Meanwhile, the up-down winding drive is arranged to drive the connecting arm to rotate around the hinge point, so that the lifting adjustment of the winding roller is realized, and the winding of the winding roller is facilitated. The film passes through the first guide wheel set and the transmission roller set in sequence to form an unwinding channel, so as to ensure the smoothness and stability of conveying.

[0050] In addition, the swing roller assembly adjusts the swing angle of the movable roller through the swing arm and the adjusting screw rod, so as to adjust the film tension, thereby improving the stability of unwinding. The up-down winding drive can select a suitable driving mode according to the weight of the film, the lighter film is driven by the pneumatic cylinder, and the heavier film is driven by the oil cylinder, so as to ensure the stable lifting of the winding roller.

[0051] In summary, the utility model ensures that the film can be conveyed stably during unwinding, improves the stability of unwinding, reduces the influence of film deviation and tension, and improves the overall production efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 It is a front view of the film unwinding and traction device of the utility model;

[0053] Figure 2 For Figure 1 A cross-sectional view of D-D in FIG. 1;

[0054] Figure 3 For Figure 1 A partial enlarged view of A in FIG. 1;

[0055] Figure 4 For Figure 2 A partial enlarged view of B in FIG. 1;

[0056] Figure 5 For Figure 1 A partial enlarged view of C in FIG. 1. DETAILED DESCRIPTION

[0057] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawings, the utility model is further detailed.

[0058] As Figures 1-5 Illustrated, a film unwinding and traction device, comprising:

[0059] Frame 1, frame 1 has the both sides support portion of relative arrangement;

[0060] Horizontal guide rail 2, horizontal guide rail 2 is across and fixedly installed on both sides support portion;

[0061] Slide, slide is slidably connected on horizontal guide rail 2;

[0062] A pair of connecting arms 4, one end of a pair of connecting arms 4 is respectively hingedly connected with slide;

[0063] Roller 5, both ends of roller 5 are respectively hingedly connected between the other end of a pair of connecting arms 4;

[0064] Two up and down winding drives 6, one end of up and down winding drive 6 is hingedly connected on slide, and the other end is hingedly connected in the middle position of one of connecting arms 4;

[0065] Upper support arm 7, upper support arm 7 is fixedly installed on slide;

[0066] First guide wheel set 8, first guide wheel set 8 is installed on upper support arm 7, and first guide wheel set 8 forms first conveying channel on upper support arm 7;

[0067] Deviation correction sensor 9, deviation correction sensor 9 is installed between first guide wheel set 8, and deviation correction sensor 9 is suitable for detecting film on first conveying channel and sending detection signal;

[0068] Transmission roller set 10, transmission roller set 10 is installed on frame 1;

[0069] The correction actuator 11 is mounted on the frame 1. One end of the correction actuator 11 is hinged to the frame 1, and the other end is hinged to the slide.

[0070] The web correction controller is mounted on the frame 1 and is electrically connected to the web correction sensor 9 and the web correction actuator 11. The web correction controller is adapted to control the operation of the web correction actuator 11 according to the detection signal of the web correction sensor 9.

[0071] The film on the winding roller 5 passes through the first guide wheel group 8 and the transmission roller group 10 to form an unwinding channel.

[0072] In this embodiment, as Figures 1 to 2 As shown, a horizontal guide rail 2 is supported by a frame 1, and a slide block is slidably connected to the horizontal guide rail 2. A pair of connecting arms 4 connect the slide block and the winding roller 5, enabling horizontal adjustment of the winding roller 5. A web-correction sensor 9 detects the film position and sends a detection signal. The web-correction controller controls the web-correction actuator 11 to adjust the slide block position according to the detection signal, so that the film is aligned with the conveying trajectory, thereby achieving web correction. At the same time, an up-and-down drive 6 is set to drive the connecting arms 4 to rotate around the hinge point, thereby realizing the lifting and lowering adjustment of the winding roller 5, facilitating the unwinding and rewinding of the winding roller 5. The film passes sequentially through the first guide wheel group 8 and the transmission roller group 10 to form an unwinding channel, ensuring smooth and stable conveying.

[0073] Specifically, such as Figures 1 to 3 As shown, the film unwinding and traction device also includes two adjusting roller assemblies 14, each of which includes:

[0074] Vertical guide rail 141 is fixedly installed on one side of the support part of the frame 1;

[0075] A connecting bracket 144 is provided on one side of the vertical guide rail 141, and a connecting hole is provided on the connecting bracket 144;

[0076] The first slider 145 is slidably disposed on the vertical guide rail 141, and a screw hole is provided on the vertical surface of the first slider 145.

[0077] The first adjusting screw 146 passes through the screw hole between the connecting bracket 144 and the first slider 145 to drive the first slider 145 to move on the vertical guide rail 141;

[0078] A horizontal guide rail is fixed to the other side of the support part of the frame 1;

[0079] The second slider is slidably mounted on the horizontal guide rail and has a second screw hole.

[0080] A second connecting frame is arranged on one side of the horizontal guide rail, and a second connecting hole is arranged on the second connecting frame;

[0081] A second adjusting screw is adapted to be screwed through the second connecting hole and the second screw hole of the second sliding block to drive the second sliding block to move on the horizontal guide rail;

[0082] An adjusting roller body is rotatably arranged between the first sliding block and the second sliding block.

[0083] In the embodiment, as shown in the figure, Figures 2 to 3 the adjusting roller assembly 14 is driven to move up and down on one side of the vertical guide rail 141 by the rotation of the first adjusting screw 146, and the second adjusting screw is rotated to drive the second sliding block to move left and right on one side of the horizontal guide rail, so that the position of the adjusting roller body can be accurately positioned in a two-dimensional plane. By adjusting the position of the adjusting roller body, the tension of the film surface during transmission can be controlled to ensure that the film is transported smoothly.

[0084] Specifically, as shown in the figure, Figure 4 the film unwinding and pulling device further comprises a swing roller assembly, which comprises:

[0085] A pair of swing arms 152 are hingedly connected to the support portion of the corresponding rack 1 at one end;

[0086] Two horizontal supports 155 are installed on the rack 1, and two vertical supports 156 are arranged on the horizontal support 155, and adjusting holes are arranged on the vertical supports 156;

[0087] Two groups of adjusting screws 153 are arranged in the adjusting holes of the vertical supports 156, and the end portions of the adjusting screws 153 abut against the swing arms 152, and are adapted to adjust the swing angle of the swing arms 152;

[0088] A movable roller 154 is hingedly connected between the other ends of the pair of swing arms 152.

[0089] In the embodiment, as shown in the figure, Figure 4 the swing roller assembly is mainly used for tension buffering and adjusting during film conveying. The swing arms 152 are connected to the support portion of the rack 1 by hinging, so that the swing arms 152 can swing at a certain angle around the hinge point. The movable roller 154 is installed between the other ends of the pair of swing arms 152 and changes position with the swing of the swing arms 152. By adjusting the adjusting screws 153 through the adjusting holes of the vertical supports 156, the end portions of the adjusting screws 153 abut against the swing arms 152, which can limit the swing angle of the swing arms 152, thereby controlling the movement range of the movable roller 154.

[0090] When the film is released from the roll 5, it is sent upward by the swing roller assembly. When the film release tension is different, the swing roller 154 is changed in position, the film transmission path is lengthened or shortened, and the buffering effect is achieved.

[0091] The operator can manually adjust the swing limit of the swing arm 152 by setting the adjusting screw 153 according to the characteristics of different types of film, thereby controlling the film transmission tension.

[0092] Specifically, as shown in Figures 1 to 2 , the film unwinding and traction device further comprises a corona machine 16 installed on the rack 1 and located on the unwinding channel.

[0093] Specifically, as shown in Figure 2 , the deviation correction execution mechanism 11 is a screw linear stepping motor.

[0094] Specifically, as shown in Figure 2 , the upper and lower roll driver 6 is a pneumatic cylinder or an oil cylinder.

[0095] In this embodiment, as shown in Figures 1 to 2 , the corona machine 16 is installed on the rack 1 and located on the unwinding channel, and is used for surface treatment of the film in transmission. When the film passes through the position where the corona machine 16 is located, the corona machine 16 generates high-voltage corona discharge to change the physical and chemical properties of the film surface. The corona machine 16 is prior art, and this embodiment will not be described in detail.

[0096] The deviation correction execution mechanism 11 adopts a screw linear stepping motor structure, which can convert rotary motion into precise linear motion. The deviation correction controller controls the operation of the screw linear stepping motor according to the detection signal sent by the deviation correction sensor 9, so that the sliding seat moves on the horizontal guide rail 2, thereby adjusting the transverse position of the film and correcting the deviation of the film.

[0097] The upper and lower roll driver 6 can select a suitable driving mode according to the weight of the film. The lighter film is driven by a pneumatic cylinder, and the heavier film is driven by an oil cylinder.

[0098] Specifically, as shown in Figures 1 to 2 and Figure 5 , the transmission roller set 10 comprises two guide rollers and a driving roller set. The driving roller set comprises:

[0099] A fixed frame 131 is installed on one side of the rack 1.

[0100] A driver 132 is installed on the fixed frame 131.

[0101] A driving gear 133 is in transmission connection with the driver 132.

[0102] The driven gear 134 is meshingly connected with the driving gear 133.

[0103] The driving roller 135 is hingedly connected between the two side supporting portions of the frame 1, and is coaxially connected with the driving gear 133.

[0104] The driven roller 136 is hingedly connected between the two side supporting portions of the frame 1, and is coaxially connected with the driven gear 134.

[0105] In the embodiment, as shown in Figures 1 to 2 and Figure 5 , the transmission roller set 10 is composed of a guide roller and a driving roller set, and is responsible for the transmission power and direction control of the film. After the driver 132 is started, the driving gear 133 is rotated through the transmission connection, the driving gear 133 is meshingly connected with the driven gear 134, the driving gear 133 is coaxially connected with the driving roller 135, and the driven gear 134 is coaxially connected with the driven roller 136, so that the rotary motion of the gears is directly transmitted to the corresponding roller bodies. The driving roller 135 and the driven roller 136 are hingedly connected between the two side supporting portions of the frame 1. When the film passes through the driving roller 135 and the driven roller 136 in turn, it is driven to advance under the action of the friction force of the driving roller 135 and the driven roller 136. The guide roller is installed at a proper position on the transmission path, and is used to guide the film to travel along the predetermined path. The driver 132 is a motor.

[0106] Specifically, as shown in Figures 1 to 2 , the film unwinding and pulling device further comprises a roll roller driving mechanism (not shown in the figure), which comprises:

[0107] The driving motor 15 is installed on one of the connecting arms 4.

[0108] The main transmission gear is rotatably installed on the connecting arm 4 and is in transmission connection with the driving motor 15.

[0109] The driven transmission gear is rotatably installed on the connecting arm 4, is meshingly connected with the main transmission gear, and is in transmission connection with the roll roller 5.

[0110] In the embodiment, as shown in Figures 1 to 2 , the roll roller driving mechanism 15 is responsible for controlling the rotation of the roll roller 5. The driving motor 15 is directly installed on one of the connecting arms 4, so that the driving motor 15 moves together with the connecting arm 4 and keeps the relative position with the roll roller 5 fixed. After the driving motor 15 is started, the main transmission gear is rotated through the transmission connection, the power is transmitted to the driven transmission gear through the meshing of the main transmission gear and the driven transmission gear, and the transmission connection between the driven transmission gear and the roll roller 5 is established, so that the roll roller 5 rotates at a predetermined speed.

[0111] The above-described specific embodiments further specifically describe the technical problems solved by the present application, technical solutions and beneficial effects. It should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A film unwinding and pulling device, characterized by comprising: It comprises: a rack (1) having two oppositely arranged side support parts; horizontal guide rails (2) transversely fixedly installed on the two side support parts; a sliding seat slidably connected to the horizontal guide rails (2); a pair of connecting arms (4), one end of each of the connecting arms (4) being hingedly connected to the sliding seat; a winding roller (5), two ends of the winding roller (5) being hingedly connected between the other ends of the pair of connecting arms (4); at least one up-down winding drive (6), one end of the up-down winding drive (6) being hingedly connected to the sliding seat and the other end being hingedly connected to a middle position of one of the connecting arms (4); an upper supporting arm (7) fixedly installed on the sliding seat; a first guide wheel set (8) installed on the upper supporting arm (7), the first guide wheel set (8) forming a first conveying channel on the upper supporting arm (7); a deviation correction sensor (9) installed between the first guide wheel set (8), the deviation correction sensor (9) being adapted to detect a film on the first conveying channel and send a detection signal; a transmission roller set (10) installed on the rack (1); a deviation correction execution mechanism (11) arranged on the rack (1), one end of the deviation correction execution mechanism (11) being hingedly connected to the rack (1) and the other end being hingedly connected to the sliding seat; a deviation correction controller arranged on the rack (1), the deviation correction controller being electrically connected to the deviation correction sensor (9) and the deviation correction execution mechanism (11), the deviation correction controller being adapted to control the operation of the deviation correction execution mechanism (11) according to the detection signal of the deviation correction sensor (9); wherein the film on the winding roller (5) sequentially passes through the first guide wheel set (8) and the transmission roller set (10) to form a unwinding channel.

2. The film unwinding and traction device according to claim 1, further comprising a swing roller assembly, the swing roller assembly comprising: a pair of swing arms (152), one end of each of the swing arms (152) being hingedly connected to a corresponding support part of the rack (1); at least one horizontal support (155) installed on the rack (1), the horizontal support (155) being provided with two vertical supports (156), the vertical supports (156) being provided with adjustment holes; at least one set of adjustment screws (153) passing through the adjustment holes of the vertical supports (156), the ends of the adjustment screws (153) abutting against the swing arms (152) and being adapted to adjust the swing angle of the swing arms (152); a movable roller (154), two ends of the movable roller (154) being hingedly connected between the other ends of the pair of swing arms (152).

3. The film unwinding and traction device according to claim 1, wherein the transmission roller set (10) comprises at least one guide roller and a drive roller set, the drive roller set comprising: ​ ​ A fixing frame (131) is installed on one side of the rack (1); A driver (132) is installed on the fixing frame (131); A driving gear (133) is in transmission connection with the driver (132); A driven gear (134) is in meshing connection with the driving gear (133); A driving roller (135) is hinged between the two side supporting portions of the rack (1) and coaxially connected with the driving gear (133); A driven roller (136) is hinged between the two side supporting portions of the rack (1) and coaxially connected with the driven gear (134).

4. The film unwinding and traction device according to claim 1, further comprising at least one adjusting roller assembly (14), wherein the adjusting roller assembly (14) comprises: a vertical guide rail (141) fixedly installed on one side of the supporting portion of the rack (1); a connecting frame (144) provided on one side of the vertical guide rail (141) and provided with a connecting hole; a first sliding block (145) slidingly provided on the vertical guide rail (141) and provided with a threaded hole on a vertical surface thereof; a first adjusting screw (146) penetrating through the connecting frame (144) and the threaded hole of the first sliding block (145) to drive the first sliding block (145) to move on the vertical guide rail (141); a horizontal guide rail fixedly installed on the other side of the supporting portion of the rack (1); a second sliding block slidingly provided on the horizontal guide rail and provided with a second threaded hole; a second connecting frame provided on one side of the horizontal guide rail and provided with a second connecting hole; a second adjusting screw adapted to be threadedly connected with the second connecting hole and the second threaded hole of the second sliding block to drive the second sliding block to move on the horizontal guide rail; an adjusting roller body rotatably installed between the first sliding block (145) and the second sliding block.

5. The film unwinding and traction device according to claim 1, further comprising a corona machine (16) installed on the rack (1) and located on the unwinding channel.

6. The film unwinding and traction device according to claim 1, wherein the deviation rectifying execution mechanism (11) is a screw linear stepping motor.

7. The film unwinding and traction device according to claim 1, wherein the up-down winding driver (6) is a pneumatic cylinder or an oil cylinder.

8. The film unwinding and traction device according to claim 1, ​ ​ ​ ​ Also included is a roll drive mechanism, the roll drive mechanism comprising: a drive motor (15) mounted on one of the connecting arms (4); a main drive gear rotatably mounted on the connecting arm (4) in driving connection with the drive motor (15); a slave drive gear rotatably mounted on the connecting arm (4) in meshing connection with the main drive gear, the slave drive gear being in driving connection with the roll (5).

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