Automatic coil unloading and core replacing device for thin film production line

Abstract

An automatic coil unloading and core replacing device for a thin film production line comprises a rack, a winding station, a left transfer support and a right transfer support are arranged on the rack, and a first air cylinder for driving the transfer supports to move longitudinally is further arranged on the rack. A transverse guide rail extending transversely is arranged in front of the longitudinal clamping rail, and a film carrying trolley capable of walking transversely is arranged on the transverse guide rail; a fixed vertical guide rail is further mounted on the rack, and a core pulling assembly is mounted on the vertical guide rail; the core pulling assembly comprises an assembly support, a lower clamping block, an upper clamping block, a supporting block, a cam, a swing rod, a third air cylinder and a fourth air cylinder, the assembly support can be vertically installed on the vertical guide rail in a sliding mode, and the core pulling assembly is further provided with a second air cylinder driving the assembly support to move up and down along the vertical guide rail. The third cylinder and the fourth cylinder are mounted on the assembly bracket; the upper clamping block is connected with the first end of a swing rod, and the second end of the swing rod is driven by a third cylinder. The cam is driven by a fourth air cylinder to rotate. The automatic coil unloading and core changing device can automatically realize coil unloading and core changing, and occupies a small workshop area.

Description

Technical Field

[0001] The utility model belongs to the technical field of film production equipment, in particular to an automatic roll unloading and core changing device for a film production line. Background Art

[0002] After the film is produced, it needs to be wound around the paper core tube by the winding equipment to become a coil. During the winding process, the paper core tube is sleeved outside the winding shaft, and the winding shaft drives the paper core tube to rotate continuously, thereby continuously winding up the film material. When the winding reaches the set length and the film roll reaches the set diameter, the film roll and the paper core tube need to be unloaded (this process is called "unloading"), and the film roll (together with the paper core tube) is extracted from the winding shaft and then a new paper core tube is installed on the winding shaft. This process is called "core replacement".

[0003] The traditional core replacement process is mainly carried out manually, with a low degree of automation, high labor intensity for workers, and a long time consumption. In order to solve this problem, in the Chinese utility model patent CN106553920A, the applicant has designed a core pulling trolley, which is installed on a track. When working, the film roll is placed on the film transport trolley (the moving track of the film transport trolley is perpendicular to the axis direction of the film roll), and the core pulling trolley clamps the end of the winding shaft on the film transport trolley and moves along the axis direction of the film roll, thereby realizing automatic core pulling.

[0004] However, the above structure needs to be provided with two kinds of movable trolleys (i.e., the core pulling trolley and the film transporting trolley). Since both the core pulling trolley and the film transporting trolley need to be equipped with running tracks, and the core pulling trolley and the film transporting trolley cannot share the same track, that is, the core pulling trolley and the film transporting trolley need to be provided with running tracks respectively, and the running track of the core pulling trolley is perpendicular to the running track of the film transporting trolley, which occupies a large workshop area. Utility Model Content

[0005] The utility model aims to overcome the above disadvantages and provide an automatic unloading and core changing device for a film production line, which can automatically realize unloading and core changing and occupies a small workshop area.

[0006] The purpose can be achieved according to the following scheme: an automatic unloading and core changing device for a film production line comprises a frame, a winding station and two left and right transfer supports are arranged on the frame, a first fork for temporarily placing the end of a winding shaft is arranged on the upper part of each transfer support, each transfer support is equipped with a transmission plate, the transfer support is fixed together with the transmission plate on the corresponding side, longitudinal clamping rails extending longitudinally are arranged above and below the transmission plate, and the transmission plate can slide longitudinally along the longitudinal clamping rails; a first cylinder for driving the transfer support and the transmission plate to move longitudinally synchronously is also arranged; a mechanical arm for hoisting the winding shaft is arranged between the winding station and the transfer support;

[0007] A transverse guide rail extending transversely is provided in front of the longitudinal clamping rail, the vertical position of the bottom end of the transmission plate is higher than the transverse guide rail, and a film-carrying trolley capable of transverse movement is provided on the transverse guide rail; the film-carrying trolley includes a body top plate, and the film-carrying trolley is provided with a body oil cylinder for driving the body top plate to move vertically;

[0008] The frame is also equipped with a fixed vertical guide rail, which is located on the lateral outer side of the transverse guide rail, and a core pulling assembly is installed on the vertical guide rail; the core pulling assembly includes an assembly bracket, a lower clamping block, an upper clamping block, a support block, a cam, a rocker arm, a third cylinder, and a fourth cylinder. The assembly bracket can be vertically slidably installed on the vertical guide rail, and a second cylinder is also provided to drive the assembly bracket to move up and down along the vertical guide rail; the third cylinder and the fourth cylinder are installed on the assembly bracket, the support block and the lower clamping block are fixed relative to the assembly bracket, the rocker shaft of the rocker arm is installed on the assembly bracket, and the rotating shaft of the cam is installed on the assembly bracket, the vertical height of the support block is the same as the vertical height of the lower clamping block, the upper clamping block is located above the lower clamping block, and the support block is located on the lateral inner side of the lower clamping block; the upper clamping block is connected to the first end of the rocker arm, and the second end of the rocker arm is driven by the third cylinder; the rotating shaft of the cam is located above the upper clamping block; the cam is driven to rotate by the fourth cylinder.

[0009] The lower clamping block is provided with a second fork for clamping the end of the winding shaft, the upper clamping block is provided with a third fork for clamping the end of the winding shaft, and the support block is provided with a fourth fork for supporting the end of the winding shaft, the second fork and the fourth fork are opened upward, the third fork is opened downward, and the vertical height of the fourth fork of the support block is the same as the vertical height of the second fork of the lower clamping block.

[0010] The cam is driven to rotate by the fourth cylinder through the first transmission gear and the second transmission gear, wherein the first transmission gear is meshed with the second transmission gear, the fourth cylinder is connected to the eccentric position of the first transmission gear, and the second transmission gear is coaxially fixedly connected with the cam and rotates synchronously.

[0011] The utility model has the following advantages and effects:

[0012] The utility model can implement unloading and core replacement. When changing the core, the lower clamping block and the upper clamping block fixed in the horizontal projection position fix one end of the winding shaft, and the winding trolley drags the film roll to move, so that the film roll (together with the paper core tube) is extracted from the winding shaft, and then the winding trolley carries the new paper core tube and inserts it into the fixed winding shaft, thereby realizing the core replacement. In the above core replacement process, it is not necessary to pull the winding shaft, so the horizontal projection position of the core pulling component does not need to be moved, that is, it is not necessary to set a track for the core pulling trolley, so it can greatly save the occupied workshop area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a specific embodiment of the utility model.

[0014] Figure 2 yes Figure 1 Schematic side view of the structure shown.

[0015] Figure 3 yes Figure 2 A partial enlarged schematic diagram is shown in the figure.

[0016] Figure 4 yes Figure 1 A partial enlarged schematic diagram is shown in the figure.

[0017] Figure 5 yes Figure 1 A is a partial enlarged schematic diagram.

[0018] Figure 6 yes Figure 3 Schematic diagram of the internal transmission structure of the components shown.

[0019] Figure 7 yes Figure 2 A partial enlarged schematic diagram is shown in the figure.

[0020] Figure 8 It is a schematic diagram of the use step (2) of a specific embodiment of the utility model.

[0021] Fig. 9 It is a schematic diagram of the use step (3) of a specific embodiment of the utility model.

[0022] Fig.10 It is a schematic diagram of the use step (4) of a specific embodiment of the utility model.

[0023] Fig.11 It is a schematic diagram of the use step (5) of a specific embodiment of the utility model.

[0024] Fig.12 It is a side view schematic diagram of the use step (6) of a specific embodiment of the utility model.

[0025] Fig.13 It is a top view schematic diagram of the use step (6) of a specific embodiment of the utility model.

[0026] Fig.14 yes Fig.13 Middle B is a partial enlarged schematic diagram.

[0027] Fig.15 It is a schematic diagram of a top view of step (7) of the specific embodiment of the utility model.

[0028] Fig.16 It is a schematic diagram of a top view of step (8) of a specific embodiment of the utility model.

[0029] Fig.17 It is a schematic diagram of a top view of step (9) of a specific embodiment of the utility model.

[0030] Fig.18 It is a schematic diagram of a side view of step (9) of a specific embodiment of the utility model.

[0031] Fig.19 It is a schematic diagram of a top view of the use step (10) of a specific embodiment of the utility model.

[0032] Fig. 20 It is a schematic diagram of a top view of the use step (11) of a specific embodiment of the utility model. DETAILED DESCRIPTION

[0033] Figure 1 , Figure 2 , Figure 5 , Figure 3 , Figure 7 The automatic unloading and core changing device of a film production line shown in the figure comprises a frame, a winding station 11 and two left and right transfer supports 1 are arranged on the frame, a first fork 10 for temporarily placing the end of the winding shaft is arranged on the upper part of each transfer support 1, and each transfer support 1 is equipped with a transmission plate 12, the transfer support 1 is fixed together with the transmission plate 12 on the corresponding side, and longitudinal clamping rails 13 extending longitudinally are arranged on the upper and lower parts of the transmission plate 12, respectively, and the upper and lower longitudinal clamping rails 13 clamp the transmission plate 12, and the transmission plate 12 can be moved along the longitudinal clamping rails 13. The first cylinder 71 for driving the transfer support 1 and the transmission plate 12 to move longitudinally synchronously is also provided; a mechanical arm 14 for hoisting the winding shaft is provided between the winding station 11 and the transfer support 1; a transverse guide rail 52 extending transversely is provided in front of the longitudinal clamping rail 13, the vertical position of the bottom end of the transmission plate 12 is higher than the transverse guide rail 52, and a film-carrying trolley 5 capable of transverse movement is provided on the transverse guide rail 52; the film-carrying trolley 5 includes a body top plate 51, and the film-carrying trolley 5 is provided with a body oil cylinder for driving the body top plate 51 to move vertically;

[0034] Figure 1 , Figure 2 , Figure 4 , Figure 3 As shown, a fixed vertical guide rail 6 is also installed on the frame, and the vertical guide rail 6 is located on the lateral outer side of the lateral guide rail ( Figure 1Specifically, on the left side, a core pulling assembly is installed on the vertical guide rail 6; the core pulling assembly includes an assembly bracket 60, a lower clamping block 2, an upper clamping block 3, a support block 4, a cam 61, a rocker arm 62, a third cylinder 73, and a fourth cylinder 74. The assembly bracket 60 can be vertically slidably installed on the vertical guide rail 6, and a second cylinder 72 is also provided for driving the assembly bracket 60 to move up and down along the vertical guide rail 6; the third cylinder 73 and the fourth cylinder 74 are installed on the assembly bracket 60, the support block 4 and the lower clamping block 2 are fixed relative to the assembly bracket 60, and the rocker shaft 620 of the rocker arm 62 is fixed on the assembly bracket The rotating shaft 610 of the cam 61 is installed on the component bracket 60, the lower clamping block 2 is provided with a second fork 20 for clamping the end of the winding shaft, the upper clamping block 3 is provided with a third fork 30 for clamping the end of the winding shaft, and the support block 4 is provided with a fourth fork 40 for holding the end of the winding shaft. The second fork 20 and the fourth fork 40 open upward, and the third fork 30 opens downward. The vertical height of the fourth fork 40 of the support block is the same as the vertical height of the second fork 20 of the lower clamping block. The upper clamping block 3 is located above the lower clamping block 2, and the support block 4 is located on the lateral inner side of the lower clamping block 2 (the lateral inner side is at Figure 1 , Fig.14 Specifically on the right side of the figure); the upper clamping block 3 is connected to the first end of the swing rod 62 ( Figure 3 Specifically, the right end of the drawing), the second end of the swing rod 62 ( Figure 3 Specifically, the left end of the figure) is driven by the third cylinder 73; Figure 3 , Figure 4 , Figure 6 As shown, the cam 61 is located above the upper clamp 3, and the cam 61 is driven to rotate by the fourth cylinder 74 through the first transmission gear 91 and the second transmission gear 92, wherein the first transmission gear 91 is meshed with the second transmission gear 92, the fourth cylinder 73 is connected to the eccentric position of the first transmission gear 91, and the second transmission gear 92 is coaxially fixedly connected to the cam 61 and rotates synchronously.

[0035] The working principle and process steps of the above embodiment are as follows:

[0036] (1) During normal winding, the winding shaft 8 is placed in the winding station for winding, the axial direction of the winding shaft 8 is horizontal, and the winding shaft 8 is covered with a paper core tube. The winding shaft 8 is an inflatable shaft;

[0037] (2) After the winding reaches the set length, the film is cut, and the robot arm 14 lifts the film roll 82 (together with the winding shaft 8 and the paper core tube) from the winding station 11 to the transfer support 1, so that the two end sections of the winding shaft 8 fall into the first fork 10 of the transfer support 1 respectively, as shown in FIG8;

[0038] (3) The first cylinder 71 drives the transfer support 1 and the transmission plate 12 to move forward, so that the longitudinal position of the winding shaft 8 is aligned with the longitudinal position of the third fork 30 of the upper clamping block, as shown in FIG9 ;

[0039] (4) The second cylinder 72 drives the assembly bracket 60 to move upward, and the assembly bracket 60 drives the entire core pulling assembly to move upward until the second fork 20 of the lower clamping block and the fourth fork 40 of the support block 4 hold the end section of the winding shaft 8. Then, the third cylinder 73 drives the swing rod 62 to rotate, so that the first end of the swing rod 62 descends, driving the upper clamping block 3 to descend, and the upper clamping block 3 and the lower clamping block 2 clamp the end of the winding shaft 8. Then, the fourth cylinder 74 drives the cam 61 to rotate through the first transmission gear 91 and the second transmission gear 92, so that the cam 61 presses the upper clamping block 3, as shown in 10.

[0040] (5) The body cylinder of the film-carrying trolley 5 drives the body top plate 51 to rise, lifting the film roll 82 and the reel 8. The reel 8 drives the entire core-pulling assembly to rise, so that the vertical position of the end of the reel 8 is higher than the transfer support 1. Fig.11 As shown;

[0041] (6) The first cylinder 71 drives the transfer support 1 and the transmission plate 12 to move backward, so that the transfer support 1 and the transmission plate 12 return to their original positions. Fig.12 , Fig.13 , Fig.14 As shown;

[0042] (7) The take-up shaft 8 is deflated, and the film-carrying trolley 5 moves along the transverse track in a direction away from the core-pulling assembly. The film-carrying trolley 5 drives the film roll 82 and the core tube 81 to move transversely, while the take-up shaft 8 is clamped by the lower clamping block 2 and the upper clamping block 3 and is fixed. Thus, the film roll 82 and the core tube 81 are separated from the take-up shaft 8. At this time, although one end of the take-up shaft 8 ( Fig.15 The end on the right side of the drawing) loses support, but because the other end of the winding shaft 8 ( Fig.15 The lower clamp block 2 and the support block 4 are supported at the same time, and the lower clamp block and the support block 4 are separated by a horizontal distance (at Fig.14 At the same time, the cam 61 presses the upper clamping block 3, so that the lower clamping block 2, the support block 4 and the upper clamping block 3 can generate a moment to fix the winding shaft 8, so that the winding shaft 8 temporarily maintains a stable balance, such as Fig.15 As shown;

[0043] (8) Remove the film roll 82 on the film carrier trolley 5 and place a new paper core tube 81 on the top plate 51 of the film carrier trolley 5. Fig.16 As shown;

[0044] (9) The body oil cylinder of the film-carrying trolley 5 drives the body top plate 51 to continue to rise until the vertical position of the new paper core tube 81 is aligned with the reel 8 clamped by the lower clamp block and the upper clamp block 3. The film-carrying trolley 5 moves along the transverse track toward the core-pulling assembly, so that the new paper core tube 81 is sleeved on the outside of the reel 8. Thereafter, the reel 8 is inflated to expand the new paper core tube 81, as shown in FIG. Fig.17 , Fig.18 As shown;

[0045] (10) The first cylinder 71 drives the transfer support 1 and the transmission plate 12 to move forward, so that the longitudinal position of the first fork 10 of the transfer support 1 is aligned with the longitudinal position of the winding shaft 8; then the fourth cylinder 74 drives the cam 61 to rotate through the first transmission gear 91 and the second transmission gear 92, so that the cam 61 leaves the upper clamping block 3; next, the third cylinder 73 drives the swing rod 62 to rotate, so that the first end of the swing rod 62 rises, driving the upper clamping block 3 to rise, and the upper clamping block 3 leaves the winding shaft 8; then the second cylinder 72 drives the core pulling assembly to move downward, and the lower clamping block 2 and the support block 4 leave the winding shaft 8; thereafter, the body cylinder of the film carrier trolley 5 drives the body top plate 51 to descend, and the winding shaft 8 and the new paper core tube 81 descend accordingly, and the two ends of the winding shaft 8 fall into the first fork 10 of the transfer support 1 again, and the winding shaft 8 is supported by the transfer support 1, as shown in FIG. Fig.19 As shown;

[0046] (11) The first cylinder 71 drives the transfer support 1 and the transmission plate 12 to move backward, driving the reel 8 and the new paper core tube 81 to move backward, as shown in FIG. Fig. 20 As shown, the whole unloading and core changing process is completed, after which the next round of winding can be waited for, that is, waiting for the mechanical arm 14 to hang the winding shaft 8 and the paper core tube 81 onto the winding station to start the next round of winding.

Claims

1. An automatic unloading and core changing device for a film production line comprises a frame, a winding station and two left and right transfer supports are arranged on the frame, a first fork for temporarily placing the end of the winding shaft is arranged on the upper part of each transfer support, each transfer support is equipped with a transmission plate, the transfer support is fixed together with the transmission plate on the corresponding side, longitudinal clamping rails extending longitudinally are arranged above and below the transmission plate, and the transmission plate can slide longitudinally along the longitudinal clamping rails; a first cylinder is also provided to drive the transfer support and the transmission plate to move longitudinally synchronously; a mechanical arm for hoisting the winding shaft is arranged between the winding station and the transfer support; a transverse guide rail extending transversely is arranged in front of the longitudinal clamping rail, the vertical position of the bottom end of the transmission plate is higher than the transverse guide rail, and a film-carrying trolley capable of transverse movement is arranged on the transverse guide rail; the film-carrying trolley comprises a vehicle body top plate, and the film-carrying trolley is provided with a vehicle body oil cylinder driving the vehicle body top plate to move vertically; it is characterized in that: The frame is also equipped with a fixed vertical guide rail, which is located on the lateral outer side of the transverse guide rail, and a core pulling assembly is installed on the vertical guide rail; the core pulling assembly includes an assembly bracket, a lower clamping block, an upper clamping block, a support block, a cam, a rocker arm, a third cylinder, and a fourth cylinder. The assembly bracket can be vertically slidably installed on the vertical guide rail, and a second cylinder is also provided to drive the assembly bracket to move up and down along the vertical guide rail; the third cylinder and the fourth cylinder are installed on the assembly bracket, the support block and the lower clamping block are fixed relative to the assembly bracket, the rocker shaft of the rocker arm is installed on the assembly bracket, and the rotating shaft of the cam is installed on the assembly bracket, the vertical height of the support block is the same as the vertical height of the lower clamping block, the upper clamping block is located above the lower clamping block, and the support block is located on the lateral inner side of the lower clamping block; the upper clamping block is connected to the first end of the rocker arm, and the second end of the rocker arm is driven by the third cylinder; the rotating shaft of the cam is located above the upper clamping block; the cam is driven to rotate by the fourth cylinder.

2. The automatic unloading and core changing device for a film production line according to claim 1 is characterized in that: The lower clamping block is provided with a second fork for clamping the end of the winding shaft, the upper clamping block is provided with a third fork for clamping the end of the winding shaft, and the support block is provided with a fourth fork for supporting the end of the winding shaft, the second fork and the fourth fork are opened upward, the third fork is opened downward, and the vertical height of the fourth fork of the support block is the same as the vertical height of the second fork of the lower clamping block.

3. The automatic unloading and core changing device for a film production line according to claim 1 or 2, characterized in that: The cam is driven to rotate by the fourth cylinder through the first transmission gear and the second transmission gear, wherein the first transmission gear is meshed with the second transmission gear, the fourth cylinder is connected to the eccentric position of the first transmission gear, and the second transmission gear is coaxially fixedly connected with the cam and rotates synchronously.

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