Intermittent automatic feeding mechanism for coiled material

Abstract

This utility model discloses an intermittent automatic feeding mechanism for rolled materials, including a support platform that carries the unwound strip from the roll. The roll is actively unwound by a rotational drive. A clamping and feeding mechanism is installed on the support platform, which clamps and intermittently and orderly feeds the strip forward. A check valve assembly is installed at the rear end of the support platform, with a cam in the check valve assembly abutting the top surface of the strip. A tensioning mechanism is installed behind the check valve assembly. The strip is loaded onto the support platform after passing through a roller in the tensioning mechanism. The roller, subjected to the tensioning reaction of the strip, swings axially parallel to the width direction of the strip. The mechanism also includes detection components corresponding to two extreme positions in the swing direction of the roller. The detection components monitor the position of the roller in real time and pause or resume the active unwinding operation, thereby effectively matching the intermittent and orderly forward feeding of the strip, meeting cutting requirements, and reducing or even avoiding the pulling of the strip during unwinding and feeding, effectively ensuring the integrity of the strip and demonstrating good practicality.

Description

Technical Field

[0001] This utility model relates to the field of automatic feeding device technology, and in particular to an intermittent automatic feeding mechanism for coiled materials. Background Technology

[0002] Nonwoven fabrics in roll form can be used as raw materials for dry wipes, in vitro diagnostic test strips, etc. They can be processed and produced according to actual processing requirements through operations such as spraying, punching, drying, and cutting to obtain the corresponding finished products.

[0003] In existing technologies, the unwinding action of the roll material is usually driven by a motor. With the same motor rotation output, the unwinding will slow down as the diameter of the roll material gradually decreases, making it difficult to effectively and constantly control the actual unwinding speed. On the other hand, for the unwinding and cutting of nonwoven fabrics, it is also necessary to match the unwinding action with the intermittency of the cutting, and effectively ensure the integrity of the nonwoven fabric itself, so as not to cause excessive stretching and affect its performance. Utility Model Content

[0004] To address the aforementioned issues, this application provides a structurally sound intermittent automatic feeding mechanism for roll materials. This mechanism enables active unwinding to effectively match the intermittent and orderly forward conveying of the material strip, meeting cutting requirements and reducing or even eliminating the pulling of the material strip during unwinding and conveying. It effectively ensures the integrity of the material strip and has good practicality.

[0005] The technical solution adopted in this utility model is as follows: An intermittent automatic feeding mechanism for rolled materials includes a support platform that supports a strip of material unwound from a roll. The roll is actively unwound by a rotational drive. A clamping and feeding mechanism is installed on the support platform to intermittently and orderly feed the strip of material onto the support platform. A check valve assembly is installed at the rear end of the support platform, with a cam in the check valve assembly abutting the top surface of the strip of material. A tensioning mechanism is installed behind the check valve assembly. The strip of material is loaded onto the support platform after passing through a roller in the tensioning mechanism. The roller, which receives the tensioning reaction from the strip, swings axially parallel to the width direction of the strip. The mechanism also includes detection components corresponding to two extreme positions in the swing direction of the roller.

[0006] As a further improvement to the above technical solution: The material roll is mounted on the air expansion shaft, the end of the air expansion shaft is mounted on the translation seat, the translation seat is slidably mounted on the translation assembly, and the translation seat is driven by the driving power to move in the width direction of the material strip; the rotation driving power is mounted on the translation seat, and the rotation driving power drives the air expansion shaft to rotate through the power transmission assembly.

[0007] The material roll is located below the tensioning mechanism. The material strip unwound from the material roll passes through the lower guide roller one and the upper guide roller two before turning and winding around the roller shaft of the tensioning mechanism.

[0008] The support platform is supported on the base plate by a bracket, and the tensioning mechanism is installed on the base plate; the rear end of the support platform is provided with guide roller three, and the material strip that comes out of the roller shaft of the tensioning mechanism is conveyed to the support platform after passing through the guide roller three.

[0009] The tensioning mechanism has the following structure: it includes a roller shaft, with both ends of the roller shaft mounted on symmetrically arranged swing arms. The ends of the swing arms on both sides are arranged to rotate in the same direction, and the rotation axis of the swing arms constitutes the swing axis of the roller shaft.

[0010] Guide width adjustment components are arranged on both sides of the support platform located behind the clamping and feeding mechanism, and the width limiting block in the guide width adjustment component is close to the edge of the material strip.

[0011] The clamping and feeding mechanism comprises a support plate installed below the support platform, on which movable guide components are installed at intervals along the conveying direction of the material belt. A movable seat is slidably mounted on the movable guide components, and the movable seat is mounted on the linear power output end via a connecting seat. The movable seat is equipped with a finger drive power at both ends, and a gripper is installed at the opposite output ends of the finger drive power. The gripper is located at the two side edges of the support platform, and grooves for accommodating and moving the gripper are provided on the two side edges of the support platform.

[0012] The cam in the anti-return assembly is rotatably arranged above the support platform. The cam is an eccentric wheel, and the bottom surface of the cam is in contact with the top surface of the material belt to form a contact point. The distance between the cam wall in front of the contact point and the rotation axis is greater than the distance between the cam wall behind the contact point and the rotation axis.

[0013] A rear pressure plate assembly is provided at the support platform located between the check valve assembly and the clamping and feeding mechanism, and / or a front pressure plate assembly is provided at the support platform located in front of the clamping and feeding mechanism.

[0014] The front pressure plate assembly and the rear pressure plate assembly have the same structure. The structure of the rear pressure plate assembly is as follows: it includes a support, and a pressure plate is rotatably mounted on the support via a pin shaft. The front part of the pressure plate is rotatably mounted on the linear drive power output end, and the lower end of the linear drive power is rotatably mounted on the support. The lower part of the front edge of the pressure plate forms a downward pressing edge that can press or detach from the material strip below.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a detection component to monitor the position of the roller shaft in real time and to pause or resume the active unwinding operation. This allows the active unwinding to effectively match the intermittent and orderly forward conveying of the material belt, meet the cutting requirements, and reduce or even avoid the pulling of the material belt during unwinding and conveying, effectively ensuring the integrity of the material belt and making it highly practical. This utility model also has the following advantages: By setting up the check valve, the material strip is effectively conveyed forward in a unidirectional and orderly manner on the support platform, which helps to ensure the reliability of the intermittent forward feeding by the clamping and feeding mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the air expansion shaft and other mechanisms used for material coil installation according to this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the material strip of this utility model wrapped around the tensioning mechanism.

[0019] Figure 4 This is a schematic diagram showing the layout of the front guide width adjustment component of the support platform of this utility model.

[0020] Figure 5 This is a schematic diagram of the clamping and feeding mechanism of this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the rear pressure plate assembly of this utility model.

[0022] The components include: 1. Support platform; 2. Material roll; 3. Tensioning mechanism; 4. Check valve assembly; 5. Rear pressure plate assembly; 6. Guide and width adjustment assembly; 7. Clamping and feeding mechanism; 8. Front pressure plate assembly; 9. Base plate; 10. Material strip; 21. Rotation drive power; 22. Translation assembly; 23. Guide roller one; 24. Translation seat; 25. Air shaft; 26. Guide roller two; 27. Guide roller three; 28. Power transmission assembly; 31. Swing arm; 32. Roller; 33. Detection assembly; 51. Support; 52. Pin; 53. Pressure plate; 54. Linear drive power; 531. Pressing edge; 61. Pole seat; 62. Screw; 63. Width limiting block; 71. Support plate; 72. Moving guide assembly; 73. Moving seat; 74. Connecting seat; 75. Gripper; 76. Gripper drive power. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] like Figure 1As shown, this embodiment of an intermittent automatic feeding mechanism for rolled materials includes a support platform 1, which carries a strip 10 unwound from a roll 2. The roll 2 is actively unwound by a rotational drive 21. A clamping and feeding mechanism 7 is provided at the support platform 1, which clamps the strip 10 on the support platform 1 and intermittently and orderly feeds it forward. A check valve assembly 4 is provided at the rear end of the support platform 1, and a cam in the check valve assembly 4 is attached to the top surface of the strip 10. A tensioning mechanism 3 is provided behind the check valve assembly 4. The strip 10 is carried onto the support platform 1 after passing through the roller 32 in the tensioning mechanism 3. The roller 32, which receives the tensioning reaction of the strip 10, swings axially parallel to the width direction of the strip 10. The mechanism also includes a detection assembly 33 corresponding to two extreme positions in the swing direction of the roller 32.

[0025] In this embodiment, the detection component 33 monitors the position of the roller 32 in real time and performs the pause or resume operation of active unwinding, so that active unwinding can effectively match the intermittent and orderly forward conveying of the material strip 10, and is not affected by the rotation speed of the material roll 2 or the diameter of the material on the material roll 2.

[0026] In this embodiment, the setting of the anti-return component 4 effectively ensures that the material belt 10 is conveyed forward in a unidirectional and orderly manner on the support platform 1, which helps to ensure the reliability of the intermittent forward feeding by the clamping and feeding mechanism 7.

[0027] In actual use, if the tension of the material strip 10 around the roller 32 is large, the material strip 10 will drive the roller 32 to swing along the conveying direction, for example, swinging upwards, until it is sensed by the detection component 33 at the corresponding limit position, and then the material roll 2 will actively open to release material; as the material release action proceeds, the material strip 10 wrapped around the roller 32 will gradually become relatively loose, and the roller 32 will swing in the opposite direction until it is sensed by the detection component 33 at the corresponding other limit position, and then the material roll 2 will stop actively releasing material; while the clamping and feeding mechanism 7 intermittently clamps the material strip 10 and conveys it forward according to its own rhythm time; thus, the active material release process of the material roll 2 can be matched in a timely and effective manner with the intermittent feeding action of the clamping and feeding mechanism 7 in front.

[0028] In this embodiment, the material strip 10 forms a temporary storage amount at the tensioning mechanism 3, and the detection components 33 at the two extreme positions correspond to the insufficient and sufficient temporary storage amount, respectively, in coordination with the intermittent forward conveying needs of the material strip 10 and the unwinding action of the material roll 2.

[0029] In this embodiment, the intermittent automatic feeding mechanism for roll material is provided by the clamping and feeding mechanism 7, which intermittently and orderly conveys the material strip 10 forward according to the cycle time, in order to match the continuous process operation of the material strip 10 by the external cutting mechanism, punching mechanism, etc.

[0030] like Figure 2As shown, the material roll 2 is mounted on the air expansion shaft 25, and the end of the air expansion shaft 25 is mounted on the translation seat 24. The translation seat 24 is slidably mounted on the translation component 22. The translation seat 24 is driven by the driving force to move in the width direction of the material strip 10, so that the material roll 2 can be adjusted in the width direction according to actual usage requirements, such as the mounting of material rolls 2 of different widths, so that the unwound material strip 10 matches the subsequent operation.

[0031] In this embodiment, the driving force that drives the translation seat 24 to move can be an existing conventional power mechanism that outputs linear motion, such as a cylinder, hydraulic cylinder, electric cylinder, etc., or other power mechanisms that can drive the translation seat 24 to move linearly.

[0032] The rotation drive power 21 is installed on the translation seat 24. The rotation drive power 21 drives the air expansion shaft 25 to rotate through the power transmission assembly 28, thereby realizing the unwinding of the material roll 2 by the power output of the rotation drive power 21.

[0033] In this embodiment, the rotational drive power 21 can be an electric motor, and the power transmission component 28 can be a conventional power transmission mechanism such as a synchronous belt transmission mechanism or a gear transmission mechanism, which can transmit the rotational output power of the rotational drive power 21 to the air shaft 25.

[0034] Material roll 2 is located below tensioning mechanism 3. The material strip 10 unwound from material roll 2 winds around the lower guide roller 23 and the upper guide roller 26 before turning and winding around the roller shaft 32 of tensioning mechanism 3. Figure 3 As shown.

[0035] In this embodiment, from Figure 1 and Figure 3 As shown, the unwound strip 10 passes over the guide roller 23 located below from below, then passes over the guide roller 26 located above from above, and passes over the roller shaft 32 from below. This allows the unwound strip 10 to be tensioned by the swing of the roller shaft 32 before entering the support platform 1, and the opening and closing of the active unwinding of the strip 2 can be adjusted in real time by the position feedback of the swing roller shaft 32.

[0036] The support platform 1 is supported on the base plate 9 by a bracket, and the tensioning mechanism 3 is installed on the base plate 9. The rear end of the support platform 1 is provided with guide roller 3 27. The material belt 10 that is wound from the roller shaft 32 of the tensioning mechanism 3 is conveyed to the support platform 1 after passing through the guide roller 3 27.

[0037] In this embodiment, there is a vertical distance between the support platform 1 and the base plate 9. The tensioning mechanism 3 is set on the base plate 9. The material strip 10 passes through the lower tensioning mechanism 3 and then passes through the guide roller 3 27 at the rear end of the support platform 1. The overall structure is compact and sufficient tensioning space is reserved for the material strip 10 at the tensioning mechanism 3, which effectively ensures the intermittent clamping and feeding operation of the front clamping and feeding mechanism 7.

[0038] The tensioning mechanism 3 has the following structure: it includes a roller 32, with both ends of the roller 32 mounted on symmetrically arranged swing arms 31. The ends of the swing arms 31 on both sides are arranged to rotate in the same direction, and the rotation axis of the swing arms 31 constitutes the swing axis of the roller 32.

[0039] exist Figure 3 In the embodiment shown, the roller 32 will swing upward due to the tension of the conveyor belt 10, causing the swing arm 31 to swing upward; when the conveyor belt 10 is relatively slack, the swing arm 31 will swing downward.

[0040] In one embodiment, the swing arm 31 can be an L-shaped structure with the opening facing upward. One end of the L-shaped structure forms the rotation axis, and the other end of the L-shaped structure is equipped with a roller shaft 32, thereby effectively lowering the center of gravity of the swing arm 31 and ensuring the tension of the roller shaft 32 on the material belt 10.

[0041] In one embodiment, the end of the swing arm 31 is rotatably mounted on the bottom surface of the base plate 9 via the base, and the rotation center between the swing arm 31 and the base constitutes the rotation and swing axis of the swing arm 31 and the roller 32.

[0042] The support platform 1 located behind the clamping and feeding mechanism 7 is provided with guide width adjustment components 6 on both sides, and the width limiting block 63 in the guide width adjustment component 6 is close to the edge of the material belt 10.

[0043] exist Figure 4 In the embodiment shown, the guide width adjustment component 6 includes: a rod seat 61 fixedly installed relative to the support platform 1, a screw 62 rotatably mounted on the rod seat 61, and a width limiting block 63 fitted at the end of the screw 62; in actual operation, the rotation of the screw 62 drives the width limiting block 63 to move in the axial direction of the screw 62, thereby adjusting the distance between the two width limiting blocks 63 and realizing width adjustment.

[0044] In one embodiment, the rod seat 61 can be threadedly fitted to the screw 62, while the screw 62 and the width limiting block 63 are rotatably fitted via bearings or the like. This allows the screw 62 to move axially relative to the rod seat 61 via rotation, thus adjusting the width limiting block 63. Alternatively, the rod seat 61 and the screw 62 can be rotatably fitted via bearings or the like, while the screw 62 and the width limiting block 63 can be helically fitted. Similarly, the width limiting block 63 can be moved by the rotation of the screw 62. In actual operation, a guide structure for the movement of the width limiting block 63 can be provided according to the actual situation. For example, a guide structure such as a guide rail or a groove can be provided between the width limiting block 63 and the support platform 1 to effectively ensure the movement and adjustment of the width limiting block 63.

[0045] In one embodiment, a limiting block can also be installed on the side of the width limiting block 63 facing the material belt 10. The limiting block is located above the material belt 10, and the material belt 10 located between the two width limiting blocks 63 passes under the limiting block. A small gap is set between the limiting block and the material belt 10 so as not to affect the smooth conveying of the material belt 10.

[0046] like Figure 5 As shown, the structure of the clamping and feeding mechanism 7 is as follows: it includes a support plate 71 installed below the support platform 1. The support plate 71 is equipped with movable guide components 72 arranged along the conveying direction of the material belt 10. The movable guide components 72 are slidably mounted with movable seats 73. The movable seats 73 are mounted on the linear power output end via connecting seats 74. The movable seats 73 are equipped with finger drive power 76 at both ends. The output ends of the finger drive power 76 facing each other are respectively equipped with grippers 75. The grippers 75 are located at the two side edges of the support platform 1. The two side edges of the support platform 1 are provided with grooves for the grippers 75 to be accommodated and moved, which facilitates the grippers 75 to clamp the material belt 10.

[0047] In this embodiment, the linear power that drives the movable seat 73 to move via the connecting seat 74 can be arranged below the support plate 71. The connecting seat 74 realizes the structural connection between the linear power and the movable seat 73, thereby achieving the compactness of the clamping and feeding mechanism 7 relative to the support platform 1.

[0048] In this embodiment, the linear power source can be a power component such as a cylinder, hydraulic cylinder, or electric cylinder that can output linear drive power.

[0049] In this embodiment, the reciprocating movement of the movable seat 73 along the movable guide assembly 72, combined with the gripper driving power 76, drives the gripper 75 to clamp or release the material belt 10, thereby realizing the intermittent forward conveying of the material belt 10 by the clamping and feeding mechanism 7.

[0050] The gripper 75 has two positions relative to the support platform 1, front and rear, and moves back and forth between the two positions. When feeding, the gripper 75 is in the rear position relative to the support platform 1, and the gripper 75 clamps the material belt 10. The linear power works to drive the moving seat 73 to move forward relative to the support platform 1, and the gripper 75 moves forward holding the material belt 10. When the gripper 75 moves to the front position, the gripper 75 releases the material belt 10, completing one conveying of the material belt 10.

[0051] The cam in the anti-reverse assembly 4 is rotatably arranged above the support platform 1. The cam is an eccentric wheel, and the bottom surface of the cam is in contact with the top surface of the material belt 10 to form a contact point. The distance between the cam wall in front of the contact point and the rotation axis is greater than the distance between the cam wall behind the contact point and the rotation axis. Thus, the cam can adaptably swing forward as the material belt 10 is normally conveyed forward. However, when the material belt 10 stops conveying or even tends to retreat, the cam is in contact with the material belt 10 at the contact point but cannot swing backward with the eccentric as the center. The anti-reverse is achieved by the cam sticking to the material belt 10.

[0052] In one embodiment, the outer wall of the cam is a circular outer wall, and an eccentric wheel is formed by the eccentric setting of the center of the circle.

[0053] A rear pressure plate assembly 5 is provided on the support platform 1 located between the check valve assembly 4 and the clamping and feeding mechanism 7, and / or a front pressure plate assembly 8 is provided on the support platform 1 located in front of the clamping and feeding mechanism 7.

[0054] The intermittent automatic feeding mechanism in this embodiment can be matched to the process requirements of spraying, drilling, etc. For example, a spraying component is arranged on the support platform 1 in front of the rear pressure plate assembly 5. After the material belt 10 is conveyed to the support platform 1, the rear pressure plate assembly 5 presses the material belt 10 to ensure that the material belt 10 is fixed relative to the support platform 1. The spraying component starts working. After the spraying is completed, the rear pressure plate assembly 5 releases the pressure on the material belt 10, and the clamping and feeding mechanism 7 conveys the material belt 10 forward a preset distance. The rear pressure plate assembly 5 and the spraying component cooperate again, so that the clamping and feeding mechanism 7, the rear pressure plate assembly 5 and the spraying component form a connection of processing actions.

[0055] The intermittent automatic feeding mechanism in this embodiment can be matched to process requirements such as cutting. For example, a cutting component is set up at the front pressure plate assembly 8. Combined with the pressure of the front pressure plate assembly 8 on the material strip 10, the cutter in the cutting component cuts the material strip 10 along the front pressure plate assembly 8. After the cutting is completed, the clamping and feeding mechanism 7 drives the material strip 10 forward a preset distance and performs the next cutting action.

[0056] Of course, in actual operation, the intermittent automatic feeding mechanism in this embodiment can be matched with processes such as spraying and drilling, and can be combined with cutting operations. Taking the combination of spraying and cutting as an example, when the rear pressure plate assembly 5 and the front pressure plate assembly 8 are pressed on the material strip 10, the spraying assembly performs spraying operation on the material strip 10 between the front pressure plate assembly 8 and the rear pressure plate assembly 5, and the cutting assembly performs cutting operation at the front side of the front pressure plate assembly 8. Then, combined with the conveying of the clamping and feeding mechanism 7, the intermittent feeding operation of the material strip 10 is realized.

[0057] The front pressure plate assembly 8 and the rear pressure plate assembly 5 have the same structure, such as Figure 6As shown, the structure of the rear pressure plate assembly 5 is as follows: it includes a support 51, and a pressure plate 53 is rotatably mounted on the support 51 via a pin shaft 52. The front part of the pressure plate 53 is rotatably mounted on the output end of the linear drive power 54, and the lower end of the linear drive power 54 is rotatably mounted on the support 51. The lower part of the front edge of the pressure plate 53 forms a lower pressing edge 531 that can press or detach from the material strip 10 below.

[0058] In actual operation, the linear drive power 54 pulls the pressure plate 53 downward, causing the pressure plate 53 to swing down around the pin 52 until the front pressing edge 531 presses against the lower material strip 10; or, the linear drive power 54 pushes the pressure plate 53 upward, causing the pressure plate 53 to swing up around the pin 52, causing the front pressing edge 531 to disengage from the lower material strip 10 and contact the pressing of the material strip 10.

[0059] In this embodiment, the pressing edge 531 can be a convex edge that extends downward from the front edge of the pressure plate 53.

[0060] In this embodiment, the linear drive power 54 can be a well-known power component that outputs linear power, such as a cylinder or electric cylinder.

[0061] This invention enables the active unwinding to effectively match the intermittent and orderly forward conveying of the material belt, meeting the cutting requirements, and reducing or even avoiding the pulling of the material belt during unwinding and conveying, effectively ensuring the integrity of the material belt and making it highly practical.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A mechanism for intermittent automatic feeding of a roll material, characterized by: The system includes a support platform (1) that carries a strip (10) unwound from a material roll (2). The material roll (2) is actively unwound by a rotational drive (21). A clamping and feeding mechanism (7) is provided at the support platform (1) to clamp the strip (10) on the support platform (1) and move it forward intermittently and orderly. A check valve assembly (4) is provided at the rear end of the support platform (1). A cam in the check valve assembly (4) is attached to the top surface of the strip (10). A tensioning mechanism (3) is provided behind the check valve assembly (4). The strip (10) is carried on the support platform (1) after passing through the roller (32) in the tensioning mechanism (3). The roller (32) that receives the tensioning reaction of the strip (10) swings axially parallel to the width direction of the strip (10). The system also includes a detection assembly (33) corresponding to the two extreme positions in the swing direction of the roller (32).

2. The intermittent automatic roll feeding mechanism according to claim 1, wherein: The material roll (2) is mounted on the air expansion shaft (25), the end of the air expansion shaft (25) is mounted on the translation seat (24), the translation seat (24) is slidably mounted on the translation component (22), and the translation seat (24) is driven by the driving power to move in the width direction of the material strip (10); the rotation driving power (21) is mounted on the translation seat (24), and the rotation driving power (21) drives the air expansion shaft (25) to rotate through the power transmission component (28).

3. The mechanism according to claim 1, wherein: The material roll (2) is located below the tensioning mechanism (3). The material strip (10) unwound from the material roll (2) passes through the lower guide roller (23) and the upper guide roller (26) and then turns to the roller shaft (32) of the tensioning mechanism (3).

4. The intermittent automatic roll feeding mechanism according to claim 1, wherein: The support platform (1) is supported on the base plate (9) by a bracket, and the tensioning mechanism (3) is installed on the base plate (9); the rear end of the support platform (1) is provided with guide roller three (27), and the material strip (10) wound from the roller shaft (32) of the tensioning mechanism (3) is transported to the support platform (1) after passing through the guide roller three (27).

5. The mechanism for automatically feeding a web material intermittently according to claim 1, 3 or 4, wherein: The tensioning mechanism (3) has the following structure: it includes a roller (32), with both ends of the roller (32) mounted on symmetrically arranged swing arms (31), and the ends of the swing arms (31) on both sides are arranged to rotate in the same direction. The rotation axis of the swing arms (31) constitutes the swing axis of the roller (32).

6. The mechanism for intermittent automatic feeding of a roll material according to claim 1, wherein: The support platform (1) located behind the clamping and feeding mechanism (7) is provided with guide width adjustment components (6) on both sides, and the width limiting block (63) in the guide width adjustment component (6) is close to the edge of the material belt (10).

7. The mechanism according to claim 1, wherein: The structure of the clamping and feeding mechanism (7) is as follows: it includes a support plate (71) installed below the support platform (1), and a moving guide assembly (72) arranged along the conveying direction of the material belt (10) is installed on the support plate (71) at intervals. A moving seat (73) is slidably mounted on the moving guide assembly (72), and the moving seat (73) is mounted on the linear power output end via a connecting seat (74). The moving seat (73) is equipped with a finger-driving power (76) at both ends, and a gripper (75) is installed at the output ends of the finger-driving power (76) facing each other. The gripper (75) is located at the two sides of the support platform (1), and grooves for accommodating and moving the gripper (75) are provided on the two sides of the support platform (1).

8. The mechanism according to claim 1, wherein: The cam in the anti-return assembly (4) is rotatably arranged above the support platform (1). The cam is an eccentric wheel, and the bottom surface of the cam is attached to the top surface of the material belt (10) to form a contact point. The distance between the cam wall in front of the contact point and the rotation axis is greater than the distance between the cam wall behind the contact point and the rotation axis.

9. The mechanism according to claim 1, wherein: A rear pressure plate assembly (5) is provided on the support platform (1) located between the check valve assembly (4) and the clamping and feeding mechanism (7), and / or a front pressure plate assembly (8) is provided on the support platform (1) located in front of the clamping and feeding mechanism (7).

10. The intermittent automatic feeding mechanism for coiled materials as described in claim 9, characterized in that: The front pressure plate assembly (8) and the rear pressure plate assembly (5) have the same structure. The structure of the rear pressure plate assembly (5) is as follows: it includes a support (51), and the support (51) is rotatably mounted with a pressure plate (53) via a pin shaft (52). The front part of the pressure plate (53) is rotatably mounted on the output end of the linear drive power (54), and the lower end of the linear drive power (54) is rotatably mounted on the support (51). The lower part of the front edge of the pressure plate (53) forms a lower pressing edge (531) that can press or detach from the material strip (10) below.

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