Card transmission turnover mechanism and method

Abstract

The invention relates to the technical field of card turnover, in particular to a card conveying turnover mechanism and method.The card conveying turnover mechanism comprises a negative pressure belt used for conveying cards, and one end of the negative pressure belt is wound around a negative pressure transmission roller; and the turnover mechanism comprises a turnover belt structure which forms a crack of which the head and the tail rotate by 180 degrees and has the same conveying speed as the negative pressure belt. Cards are conveyed through the negative pressure belt and the overturning belt with the consistent speed, the negative pressure conveying roller and the first abutting roller which are arranged in a staggered mode enable the cards to stably enter the overturning belt to be prevented from being scratched, and a crack formed by the second abutting roller and the driving roller can be automatically adjusted so as to adapt to the cards with different thicknesses. The tensioning degree of the overturning belt can be adjusted through the tensioning block and the threaded rod so as to adapt to different working states, damage possibly borne by the cards in the conveying process is reduced, and the working efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of card flipping, and in particular to a card transmission flipping mechanism and method. Background Art

[0002] When making various smart cards with images and texts, due to production requirements, sometimes the front side of the card needs to be processed with images and texts, and the back side needs to be blank, or the back side needs to be processed with images and texts, and the front side needs to be blank. In the card flipping process, a card transmission flipping mechanism needs to be used.

[0003] After long-term use, the conveyor belt of the card transport flipping mechanism will be greatly worn, making it impossible for the conveyor belt and the conveyor roller to stably contact, resulting in slippage, which is not conducive to the stable transportation of the card. Therefore, in order to solve this problem, we propose a flipping mechanism that can protect the card. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a card transmission and flipping mechanism and method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A card transmission and flipping mechanism comprises a negative pressure belt for transporting cards, one end of the negative pressure belt is wound around a negative pressure transmission roller;

[0007] A flipping mechanism for flipping the card, the flipping mechanism comprising a flipping belt structure that forms a gap that rotates 180 degrees from end to end and has the same conveying speed as the negative pressure belt, and a driving assembly for driving the flipping belt structure to move;

[0008] The driving assembly includes a first pressing roller which is staggered with the negative pressure transmission roller and suspends the flipping belt on the negative pressure belt, and a driving roller which is horizontally docked with the negative pressure transmission roller and forms a gap opening with the flipping belt.

[0009] Preferably, the turnover mechanism further comprises a support plate, a tension block and a screw;

[0010] Wherein, the support plate is arranged on both sides of the second pressing roller, and a U-shaped groove is opened on the support plate, and the two ends of the second pressing roller are movably accommodated in the U-shaped groove;

[0011] The tension block is fixed at the notch position of the U-shaped groove, and the tension block is provided with an adjustment hole relative to the notch position;

[0012] The screw rod passes through the adjusting hole and is screwed into the connecting screw holes arranged at the two ends of the roller shaft of the second pressure roller.

[0013] Preferably, the turnover mechanism further comprises a third pressing roller, which is above the driving roller and presses against the turnover belt, is located at the opening position of the nip and is located on the same vertical line as the axis of the driving roller.

[0014] Preferably, the flipping mechanism also includes a gap adjustment component, which includes a waist-shaped adjustment block with a horizontal waist-shaped hole and a guide rubber wheel rotatably fixed to the waist-shaped adjustment block through a rotating bracket, and the guide rubber wheel presses against the outer side of the flipping belt corresponding to the gap.

[0015] Preferably, the flipping mechanism also includes a first longitudinal stretching idler wheel and a second longitudinal stretching idler wheel, the first longitudinal stretching idler wheel is located above the axis connecting line of the first pressure roller 7 and the second pressure roller, and stretches the flipping belt upward; the second longitudinal stretching idler wheel is located below the axis connecting line of the two driving rollers, and stretches the flipping belt downward.

[0016] Preferably, the gap between the flipping belt and the driving roller is equal to the thickness of the card, and the distance between the axis of the negative pressure transmission roller and the axis of the driving roller and the horizontal distance between the axis of the negative pressure transmission roller and the axis of the first pressure roller are both smaller than the size of a single card in the transport direction.

[0017] Preferably, the flipping mechanism is connected to a support frame, a mounting frame is connected to the center of the bottom of the support frame, a power motor is installed on the inner side of the mounting frame, a driving disk is provided on the rear fixed sleeve of the output end of the power motor, a driving roller and a first pressure roller are respectively installed on one side of the support frame through bearings, and a plurality of belt angle idler wheels are installed on the bottom of the other end of the support frame, wherein the outer ends of the first pressure roller and the negative pressure transmission roller adjacent to it are respectively sleeved with a driven gear and a driving gear, and the driving gear and the driven gear are meshed with each other.

[0018] Preferably, the outside of the driving roller, the outside of the two negative pressure transmission rollers, the outside of the active disk and the outside of several belt angle idler wheels are collectively sleeved with a transmission belt, and a protective cover 1 for use with the active disk is installed on both sides of the mounting frame, and a protective cover 2 is connected to one end of the support frame.

[0019] Preferably, the driving roller includes a driving shaft, which is movably mounted on a support frame through a bearing, and connecting sleeves are provided at both ends of the outside of the support frame through bearing movable sleeves, and flanges are connected to the side of the connecting sleeve away from the driving shaft, and a number of dust suction holes are opened through both ends of the outside of the driving shaft.

[0020] Preferably, the flipping mechanism also includes a belt tensioning shaft and two L-shaped frames, an electric telescopic rod is connected between the support plate and the two sides of the second pressure roller, the telescopic end of the electric telescopic rod is connected to a pressure sensor, and the pressure sensor is in contact with the belt tensioning shaft on the side away from the electric telescopic rod.

[0021] Preferably, a push plate is provided on the outside of the two screw rods, one side of the two tensioning blocks is commonly connected to a U-shaped frame, one side of the push plate is movably connected to an adjusting screw through a bearing, the side of the adjusting screw away from the push plate is threaded through the U-shaped frame, reflective tape is pasted on both sides of the belt tensioning shaft, and a speed sensor used in conjunction with the reflective tape is installed on the L-shaped frame.

[0022] A card transmission flipping method is applied to a card transmission flipping mechanism, and the flipping method further comprises the following steps:

[0023] Input step: the negative pressure belt transfers the card adsorbed thereon to the channel formed by the negative pressure transmission roller and the first pressing roller, and the card is transferred to the corresponding slit opening of the driving roller through the distance between the negative pressure transmission roller and the driving roller that is smaller than the dimension of the single card in the transport direction;

[0024] Turning step: the card enters the gap formed by the turning mechanism and rotates 180 degrees from head to tail at the same speed as the negative pressure belt (2), and the card turns naturally in the gap;

[0025] Output step: The card is transmitted out from the gap and is transmitted to the negative pressure belt through the structure at the other end of the flip mechanism which is symmetrical with the input step.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention avoids friction and card scratches caused by speed differences by ensuring that the speed of the flip belt is synchronized with that of the negative pressure belt. At the same time, the setting of offset pressing and horizontal docking ensures the smooth transmission of the card during docking, reducing the risk of the card completely detaching from the belt. By adjusting the function of the flip belt tension, the tension state can be adjusted according to actual needs to adapt to different working environments, and by adjusting the size of the gap opening, it can adapt to cards of different thicknesses. The above measures can effectively avoid damage to the card during transportation, and can also autonomously adjust each mechanism to adapt to different working conditions, thereby improving the versatility and practicality of the equipment and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of the card detection pipeline of the present invention;

[0030] Figure 3 For the present invention Figure 1 Schematic diagram of the decomposition structure;

[0031] Figure 4 This is a schematic diagram of the driving roller structure of the present invention;

[0032] Figure 5 For the present invention Figure 1 Schematic diagram of the local structure;

[0033] Figure 6 It is a schematic diagram of the U-shaped groove structure of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the guide rubber wheel of the present invention.

[0035] In the figure: 2, negative pressure belt; 3, support frame; 4, power motor; 5, protective cover 2; 7, first pressure roller; 8, negative pressure transmission roller; 9, driving roller; 91, flange; 92, dust suction hole; 93, driving shaft; 94, connecting sleeve; 10, guide rubber wheel; 12, first longitudinal stretching idler wheel; 11, support plate; 13, U-shaped frame; 14, second longitudinal stretching idler wheel; 15, third pressure roller; 16, protective cover 1; 17, driving gear; 18, driven gear; 19, speed sensor; 20, transmission belt; 21, belt angle idler wheel; 22, driving plate; 23, reflective tape; 25, electric telescopic rod; 26, pressure sensor; 27, belt tensioning shaft; 28, screw; 29, tensioning block; 31, adjusting screw; 32, pushing plate; 34, L-shaped frame; 35, mounting frame. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Please also read Figure 1 to Figure 7 , a card transmission and flipping mechanism, comprising a negative pressure belt 2 for transporting cards, one end of the negative pressure belt 2 being wound around a negative pressure transmission roller 8;

[0038] A flipping mechanism for flipping the card, the flipping mechanism comprising a flipping belt structure which forms a gap rotated 180 degrees from end to end and has the same transport speed as the negative pressure belt 2, and a driving assembly for driving the flipping belt structure to move;

[0039] The driving assembly includes a first pressing roller 7 which is offset from the negative pressure transmission roller 8 and suspends the flipping belt on the negative pressure belt 2, and a driving roller 9 which is horizontally connected to the negative pressure transmission roller 8 and forms a gap opening with the flipping belt.

[0040] Specifically, the flipping belt structure includes a belt sleeved on the first pressing roller 7, the second pressing roller and the two driving rollers 9 to form a gap rotated 180 degrees from head to tail. The first pressing roller 7, the second pressing roller and the two driving rollers 9 are respectively symmetrical structures. The speeds of the upper and lower flipping belts in the gap are the same to avoid scratches on the card caused by mutual friction and pulling due to speed differences. That is, if the speeds of the two flipping belts are different, the card may be subject to the friction between the flipping belts when flipping. This friction will not only increase the risk of scratches on the card surface, but may also cause the position of the card to shift during the flipping process. Therefore, by keeping the speeds of the upper and lower flipping belts in the gap consistent, the card can be prevented from being damaged during the flipping process. When the card is transmitted from the negative pressure belt 2 When it reaches the flipping mechanism, if the first pressure roller 7 and the negative pressure transmission roller 8 are not misaligned, the card may lose the support of negative pressure adsorption in the gap between the two, resulting in the displacement or falling of the card. Through the misaligned pressure setting, the card can be smoothly transmitted from the negative pressure belt 2 to the flipping mechanism, and always maintain contact with the flipping belt, avoiding the deviation or falling out of the card during the transmission process; the negative pressure transmission roller 8 and the driving roller 9 are horizontally docked so that the card can smoothly transition from one transmission section to another, and will not lose support due to the height difference or excessive distance between the two sections, thereby avoiding the falling or displacement of the card during the transmission process, ensuring the smooth transmission of the card, and the card will not completely fall off the belt when the front and rear sections are connected.

[0041] As a technical optimization solution of the present invention, the flipping mechanism also includes a support plate 11, a tensioning block 29 and a screw 28; wherein, the support plate 11 is arranged on both sides of the second pressure roller, and a U-shaped groove is opened on it, and the two ends of the second pressure roller are movably accommodated in the U-shaped groove; the tensioning block 29 is fixed at the notch position of the U-shaped groove, and an adjustment hole is opened in the tensioning block 29 relative to the notch position; the screw 28 passes through the adjustment hole and is screwed into the connecting screw holes opened at both ends of the roller shaft of the second pressure roller.

[0042] Specifically, the screw rod 28 passes through the hole in the center of the tension block 29 and extends into the U-shaped groove, and is connected to the belt tensioning shaft 27. The belt tensioning shaft 27 is connected to both ends of the first pressing roller 7 and is movable in the U-shaped groove. The extension and retraction of the screw rod 28 can drive the belt tensioning shaft 27 to move in the U-shaped groove, thereby driving the movement of the first pressing roller 7, and finally achieving the purpose of adjusting the tension of the flip belt sleeved on the first pressing roller 7.

[0043] Furthermore, by independently adjusting the screw rod 28 on one side, the two ends of the first pressing roller 7 can produce asynchronous movement, thereby adjusting the angle of the flipping belt. This design can not only effectively adjust the tension of the flipping belt, but also flexibly adjust the tilt angle of the flipping belt according to actual conditions to adapt to different working conditions.

[0044] As a technical optimization solution of the present invention, the flipping mechanism also includes a third pressing roller 15, which is pressed against the flipping belt above the driving roller 9, is located at the opening position of the gap and is located on the same vertical line as the axis of the driving roller 9, thereby ensuring that the gap opening position provides consistent support force up and down, and accurately docks the card into the gap.

[0045] Specifically, the third pressure roller 15 is located above the driving roller 9 and is on the same straight line as the axis of the driving roller 9. The flip belt between them forms a gap for the card to pass through. When the third pressure roller 15 is operated to move, the distance between the third pressure roller 15 and the driving roller 9 will change, thereby changing the size of the gap. The size of the gap can be adjusted by adjusting the position of the third pressure roller 15 to accommodate cards of different thicknesses.

[0046] As a technical optimization solution of the present invention, the flipping mechanism also includes a gap adjustment component, which includes a waist-shaped adjustment block with a horizontal waist-shaped hole and a guide rubber wheel 10 rotatably fixed to the end of the waist-shaped adjustment block through a rotating bracket, and the guide rubber wheel 10 is pressed against the outer side of the flipping belt corresponding to the gap.

[0047] Specifically, Figure 7 The guide rubber wheel 10 is rotatably fixed to the end of the waist-shaped adjustment block through a rotating bracket. When the size of the gap needs to be adjusted, the contact pressure between the guide rubber wheel 10 and the flip belt can be changed by rotating the guide rubber wheel 10. The rotation of the guide rubber wheel 10 can change its position relative to the flip belt so that the width of the gap can be adjusted, thereby effectively pressing against the outside of the flip belt to ensure that the card is firmly clamped when passing through the flip belt, thereby avoiding the card from falling due to vibration or other factors generated during the movement of the flip belt, which not only enhances the stability of the mechanism, but also improves the safety of the card during the flipping process. The guide rubber wheel 10 can also be horizontally moved by the waist-shaped adjustment block to change its horizontal position outside the flip belt. Through this horizontal movement, the guide rubber wheel 10 can be more accurately moved to the position where the size of the gap needs to be adjusted, ensuring the stability and accurate positioning of the card in the flip belt. The application that can efficiently and accurately flip cards of various specifications helps to improve production efficiency and product quality.

[0048] Furthermore, in one embodiment, the flipping belt adopts a colloid material with a sticky surface. On the one hand, this stickiness prevents the card from slipping during the transmission process. On the other hand, the gap of the gap formed by the flipping belt and the gap between the corresponding belts of the first pressure roller 7 and the negative pressure transmission roller 8 are set to be equal to the thickness of the card. This stickiness ensures that the card can be easily and smoothly transported during the flipping process, avoiding damage to the card caused by pressure.

[0049] As a technical optimization solution of the present invention, the flipping mechanism also includes a first longitudinal stretching idler wheel 12 and a second longitudinal stretching idler wheel 14. The first longitudinal stretching idler wheel 12 is located above the axial connection line of the first pressure roller 7 and the second pressure roller, and stretches the flipping belt upward; the second longitudinal stretching idler wheel 14 is located below the axial connection line of the two driving rollers 9, and stretches the flipping belt downward.

[0050] Specifically, the first longitudinal stretching idler wheel 12 is located above the straight line formed by the axis of the first pressing roller 7. By contacting with the flipping belt, the flipping belt is stretched upward to ensure the tension of the flipping belt in the upper path, and prevent the flipping belt from sagging due to gravity or the weight of the card, thereby ensuring that the card will not slide or fall due to the loosening of the flipping belt during the transmission process; the second longitudinal stretching idler wheel 14 is located below the straight line formed by the axis of the driving roller 9. By contacting with the flipping belt, the flipping belt is stretched downward. In this way, the tension of the flipping belt in the lower path can be ensured, and the flipping belt can be prevented from becoming loose due to gravity at the bottom, thereby affecting the stability of card transmission. Through the coordinated work of these two longitudinal stretching idlers, the flipping belt can always maintain an appropriate tension state during the card transmission process, avoiding the problem of card falling or card damage caused by the loose flipping belt.

[0051] As a technical optimization scheme of the present invention, the gap of the flip belt gap between the driving roller 9 and the third pressing roller 15 is equal to the thickness of the card, and the distance between the axis of the negative pressure transmission roller 8 and the axis of the driving roller 9 and the horizontal distance corresponding to the axis of the negative pressure transmission roller 8 and the axis of the first pressing roller 7 are both smaller than the size of a single card in the transport direction.

[0052] Specifically, the horizontal spacing between the axis of the negative pressure transmission roller 8 and the first pressing roller 7 is the horizontal spacing between the two axis after vertical downward projection, and the horizontal spacing is less than or equal to the dimension of a single card in the transport direction, and the negative pressure transmission roller 8 and the first pressing roller 7 are axes with the same radius, and the radius is less than the dimension; when the dimension of a single card in the transport direction is the length of the card, it is easier to keep the center position during the transmission process, which can make the card more stable and not prone to tipping or shifting during the transmission process, so as to improve the stability of card transmission; when the dimension of a single card in the transport direction is the width of the card, more cards can be arranged in the same path compared with the length direction, which can improve the transmission efficiency; ensure the fast, stable and fast transmission of cards, and avoid the negative pressure transmission The gap between roller 8 and driving roller 9 is too large. Under special circumstances, such as when the equipment stops and the speed slows down, the card falls into the gap between the negative pressure transmission roller 8 and the driving roller 9; for example, in one embodiment, the card width is 54 mm, the card thickness is 1 mm, the flip belt gap between the driving roller 9 and the third pressure roller 15 is also 1 mm, the radius of the negative pressure transmission roller 8 and the driving roller 9 is 25 mm, the distance from the axis of the negative pressure transmission roller 8 to the axis of the driving roller 9 is 50 mm, and the actual distance between the two belts mounted on the negative pressure transmission roller 8 and the driving roller 9 is 1 mm. Therefore, the maximum horizontal distance of the card from the negative pressure transmission roller 8 to the driving roller 9 is 51 mm, which is smaller than the card size of 54 mm, thereby ensuring that the card will not fall or deviate due to excessive gap when transferred between the two rollers.

[0053] As a technical optimization scheme of the present invention, the flipping mechanism is connected to the support frame 3, and a mounting frame 35 is connected to the center of the bottom of the support frame 3. A power motor 4 is installed on the inner side of the mounting frame 35. An active disk 22 is provided on the rear fixed sleeve of the output end of the power motor 4. A driving roller 9 and a first pressure roller 7 are respectively installed on one side of the support frame 35 through bearings. A plurality of belt angle idler wheels 21 are installed on the bottom of the other end of the support frame 3, wherein a driving gear 17 is provided on one end of the outer side of the negative pressure transmission roller 8 adjacent to the first pressure roller 7, and a driven gear 18 meshing with the driving gear 17 is provided on one end of the outer side of the first pressure roller 7.

[0054] As a technical optimization solution of the present invention, the outside of the driving roller 9, the outside of the two negative pressure transmission rollers 8, the outside of the active disk 22 and the outside of several belt angle idler wheels 21 are collectively sleeved with a transmission belt 20, and protective covers 16 used in conjunction with the active disk 22 are installed on both sides of the mounting frame 35, and one end of the support frame 3 is connected to a protective cover 2 5.

[0055] As a technical optimization solution of the present invention, the driving roller 9 includes a driving shaft 93, which is movably mounted on the support frame 3 through a bearing. Both ends of the outside of the support frame 3 are provided with connecting sleeves 94 through bearing sleeves. The side of the connecting sleeve 94 away from the driving shaft 93 is connected to a flange 91, and both ends of the outside of the driving shaft 93 are penetrated by a number of dust suction holes 92.

[0056] As a technical optimization solution of the present invention, the flipping mechanism also includes a belt tensioning shaft 27 and two L-shaped frames 34. An electric telescopic rod 25 is connected between the support plate 11 and the two sides of the second pressure roller. The telescopic end of the electric telescopic rod 25 is connected to a pressure sensor 26. The pressure sensor 26 is in contact with the belt tensioning shaft 27 on the side away from the electric telescopic rod 25.

[0057] As a technical optimization solution of the present invention, the outer parts of the two screw rods 28 are commonly fixed with a push plate 32, one side of the two tensioning blocks 29 is commonly connected to a U-shaped frame 13, one side of the push plate 32 is movably connected to an adjusting screw 31 through a bearing, and the side of the adjusting screw away from the push plate is threaded through the U-shaped frame 13, reflective tape 23 is pasted on both sides of the belt tensioning shaft 27, and a speed sensor 19 used in conjunction with the reflective tape 23 is installed on the L-shaped frame 34.

[0058] A card transmission flipping method is applied to a card transmission flipping mechanism, and the flipping method further comprises the following steps:

[0059] Input step: the negative pressure belt 2 transfers the card adsorbed thereon to the channel formed by the negative pressure transmission roller 8 and the first pressing roller 7, and the card is transferred to the corresponding slit opening of the driving roller 9 through the distance between the negative pressure transmission roller 8 and the driving roller 9 being smaller than the dimension of the single card in the transport direction;

[0060] Turning step: the card enters the gap formed by the turning mechanism and rotates 180 degrees from head to tail at the same speed as the negative pressure belt 2, and the card is naturally turned in the gap;

[0061] Output step: The card is transmitted out of the gap and is transmitted to the negative pressure belt 2 through the structure at the other end of the flip mechanism which is symmetrical with the input step.

[0062] When the present invention is in use, the power motor 4 drives the active disk 22 to rotate, and the driving roller 9, two negative pressure transmission rollers 8 and a plurality of belt angle idler wheels 21 rotate under the action of the transmission belt 20. The rotation of the driving roller 9 drives the active gear 17 to rotate, and drives the first pressure roller 7 to rotate with the cooperation of the driven gear 18. At this time, with the cooperation of the flip belt, the third pressure roller 15, the first longitudinal stretching idler wheel 12 and the second longitudinal stretching idler wheel 14, the guide rubber wheel 10 and the belt tensioning shaft 27 rotate.

[0063] The negative pressure transmission rollers 8 at both ends of the support frame 3 rotate, driving the negative pressure belt 2 to rotate. A card is placed on the top of the negative pressure belt 2 on the left, and the negative pressure belt 2 on the left rotates in a circle to drive the card to move toward the flipping mechanism. When the card enters the flipping belt, a gap that rotates 180° from head to tail is formed by the flipping belt, and there is no speed difference when the belts at the upper and lower positions of the gap move. After passing through the gap, the card naturally flips 180° without relative sliding to cause damage. After the card is flipped, it enters the negative pressure belt 2 on the right.

[0064] Before the card transmission and flipping mechanism is operated, the flanges 91 at both ends of the driving shaft 93 are connected to the external cold air pipe and the exhaust fan respectively. When the exhaust fan is turned on, the cold air is drawn into the driving shaft 93 from one end and discharged from the other end, thereby cooling the driving shaft 93 and the flip belt to avoid excessive temperature of the flip belt, which will reduce the service life. Further, under the action of the exhaust fan, the outside air enters the driving shaft 93 through the dust suction hole 92, and the flowing air sucks the floating dust attached to the surface of the flip belt into the driving shaft 93, thereby improving the cleanliness of the flip belt and cooling the flip belt at the same time.

[0065] During the operation of the card transmission flipping mechanism, the pressure sensor 26 and the speed sensor 19 are in the open state. The pressure sensor 26 is used to detect the flipping belt pressure on the belt tensioning shaft 27. During the operation of the flipping belt, the pressure on the pressure sensor 26 gradually decreases, indicating that the pressure applied by the flipping belt to the belt tensioning shaft 27 decreases. When the speed of the speed sensor 19 also decreases, it can be further explained that there is slippage between the flipping belt and the belt tensioning shaft 27 and tensioning is required. The reverse adjustment screw 31 drives the U-shaped frame 13 and the screw 28 to move right. At this time, the belt tensioning shaft 27 moves right to tension the flipping belt. When the speed of the belt tensioning shaft 27 reaches the requirement, the reverse adjustment screw 31 is stopped. After tensioning, the telescopic end of the electric telescopic rod 25 extends, and the pressure sensor 26 contacts the belt tensioning shaft 27 again. At the same time, the pressure sensor 26 measures the original set value again.

[0066] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A card transmission and flipping mechanism, characterized in that: It comprises a negative pressure belt (2) for transporting cards, one end of the negative pressure belt (2) being wound around a negative pressure transmission roller (8); A flipping mechanism for flipping the card, the flipping mechanism comprising a flipping belt structure which forms a gap rotated 180 degrees from end to end and has the same transport speed as the negative pressure belt (2), and a driving component for driving the flipping belt structure to move; The driving assembly comprises a first pressing roller (7) which is staggered with the negative pressure transmission roller (8) and suspends the flipping belt on the negative pressure belt (2), and a driving roller (9) which is horizontally connected to the negative pressure transmission roller (8) and forms a gap opening with the flipping belt.

2. The card transmission and flipping mechanism according to claim 1, characterized in that: The turning mechanism further comprises a support plate (11), a tensioning block (29) and a screw rod (28); Wherein, the support plate (11) is arranged on both sides of the second pressing roller, and a U-shaped groove is opened on it, and the two ends of the second pressing roller are movably accommodated in the U-shaped groove; The tension block (29) is fixedly arranged at the notch position of the U-shaped groove, and the tension block (29) is provided with an adjustment hole relative to the notch position; The screw rod (28) passes through the adjustment hole and is screwed into the connecting screw holes provided at the two ends of the roller shaft of the second pressure roller.

3. The card transmission and flipping mechanism according to claim 1, characterized in that: The turnover mechanism also includes a third pressing roller (15), which is above the driving roller (9) and presses against the turnover belt, is located at the opening of the slit and is located on the same vertical line as the axis of the driving roller (9).

4. The card transmission and flipping mechanism according to claim 1, characterized in that: The flipping mechanism also includes a gap adjustment component, which includes a waist-shaped adjustment block with a horizontal waist-shaped hole and a guide rubber wheel (10) rotatably fixed to the waist-shaped adjustment block through a rotating bracket, and the guide rubber wheel (10) is pressed against the outer side of the flipping belt corresponding to the gap.

5. The card transmission and flipping mechanism according to claim 2, characterized in that: The turnover mechanism further comprises a first longitudinal stretching idler wheel (12) and a second longitudinal stretching idler wheel (14); the first longitudinal stretching idler wheel (12) is located above the axis connecting the first pressing roller (7) and the second pressing roller, and stretches the turnover belt upwards; the second longitudinal stretching idler wheel (14) is located below the axis connecting the two driving rollers (9), and stretches the turnover belt downwards.

6. The card transmission and flipping mechanism according to claim 3, characterized in that: The gap between the turning belt and the driving roller (9) and the third pressing roller (15) is equal to the thickness of the card, and the distance between the axis of the negative pressure transmission roller (8) and the axis of the driving roller (9) and the horizontal distance between the axis of the negative pressure transmission roller (8) and the axis of the first pressing roller (7) are both smaller than the size of a single card in the transport direction.

7. The card transmission and flipping mechanism according to claim 1, characterized in that: The flip mechanism is connected to the support frame (3), and a mounting frame (35) is connected to the center of the bottom of the support frame (3). A power motor (4) is mounted on the inner side of the mounting frame (35), and a driving disk (22) is provided on the rear fixed sleeve of the output end of the power motor (4). A driving roller (9) and a first pressure roller (7) are respectively installed on one side of the support frame (3) through bearings, and a plurality of belt angle idler wheels (21) are installed at the bottom of the other end of the support frame (3), wherein the outer ends of the first pressure roller (7) and the negative pressure transmission roller (8) adjacent thereto are respectively sleeved with a driven gear (18) and a driving gear (17), and the driving gear (17) and the driven gear (18) are meshed with each other.

8. The card transmission and flipping mechanism according to claim 7, characterized in that: The outside of the driving roller (9), the outside of the two negative pressure transmission rollers (8), the outside of the active disk (22) and the outside of a plurality of belt angle idler wheels (21) are collectively sleeved with a transmission belt (20); protective covers (16) for use with the active disk (22) are installed on both sides of the mounting frame (35); and protective covers (2) (5) are connected to one end of the support frame (3).

9. The card transmission and flipping mechanism according to claim 8, characterized in that: The driving roller (9) comprises a driving shaft (93), the driving shaft (93) being movably mounted on a support frame (3) via a bearing, connecting sleeves (94) being provided at both ends of the outside of the support frame (3) via a bearing movably sleeve, a flange (91) being connected to the side of the connecting sleeve (94) away from the driving shaft (93), and a plurality of dust suction holes (92) being provided through both ends of the outside of the driving shaft (93).

10. A card transmission flipping method, applied to the card transmission flipping mechanism of any one of claims 1 to 9, and the flipping method comprises the following steps: Input step: the negative pressure belt (2) transfers the card adsorbed thereon to the channel formed by the negative pressure transmission roller (8) and the first pressure roller (7), and the card is transferred to the corresponding slit opening of the driving roller (9) through the distance between the negative pressure transmission roller (8) and the driving roller (9) being smaller than the size of a single card in the transport direction; Turning step: the card enters the gap formed by the turning mechanism and rotates 180 degrees from head to tail at the same speed as the negative pressure belt (2), and the card turns naturally in the gap; Output step: the card is transmitted out from the gap, and the card is transmitted to the negative pressure belt (2) through the structure at the other end of the flip mechanism which is symmetrical with the input step.

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