Rotary plastic blank conveying device

Abstract

The invention belongs to the technical field of conveying devices, and particularly relates to a rotary plastic blank conveying device which comprises an outer shell and an inner shell, a tensioning mechanism for improving the rotary conveying stability of blanks is arranged in the inner shell, a guide ring is fixedly connected to the inner wall of the outer shell, and the tensioning mechanism comprises a second motor. The output end of the second motor is fixedly connected with a rotating disc, two different sliding grooves are formed in the upper surface and the lower surface of the rotating disc, sliding columns are slidably connected into the upper sliding grooves and the lower sliding grooves, one end of the upper sliding column is fixedly connected with a long push rod, and one end of the lower sliding column is fixedly connected with a short sliding rod. The sliding groove is formed in the surface of the rotating disc to control the moving distance of the long push rod and the short sliding rod, so that the inner side of the synchronous belt is tensioned to different degrees, the tensioning force of the synchronous belt in the running process can be in a uniform state, and the synchronous belt is prevented from being damaged. Therefore, the stability of the blanks in the conveying process is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveying devices, and specifically relates to a rotary plastic blank conveying device. Background Art

[0002] Plastic blanks are semi-finished products in the production process of plastic products, specifically referring to the initial formed parts obtained through molding processes such as injection molding, extrusion, and blow molding, which have not yet undergone subsequent processing to reach the finished product state. As the basic form of plastic products, the quality of plastic blanks directly affects the performance of the final product. Usually, it needs to go through multiple processes such as injection molding → cooling and shaping → flash removal → inspection → secondary processing, etc. Therefore, it is necessary to realize the efficient transfer of blanks between various processes through systematic conveying technology to ensure that they are finally transformed into qualified finished products after completing processes such as cooling, post-treatment, and inspection.

[0003] Currently, in the prior art, rotary conveying is adopted in the production process of plastic blanks. The structure of rotary conveying can distribute each working station along the circumference, shorten the transfer path of the blanks, dynamically allocate the blanks to different working stations according to the production rhythm, avoid the limitation of the one-way fixed path of the linear conveyor, and can greatly improve the production efficiency of plastic blanks.

[0004] However, the existing plastic blank conveyor uses a top-surface bearing conveying plate to transfer materials. After long-term operation, the synchronous belt is prone to slack, resulting in frequent vibrations, affecting the normal operation of the conveying plate, and causing the blanks conveyed above the conveying plate to fall, affecting the normal conveying of plastic blanks. At this time, manual tension calibration or replacement of the synchronous belt is required. Tension calibration and maintenance need to adjust the length through processes such as shearing and welding, and then install the synchronous belt on the conveyor. The maintenance time is too long, which will seriously affect the continuity of plastic accessory conveying and processing. Therefore, the present invention provides a rotary plastic blank conveying device. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is: A rotary plastic blank conveying device of the present invention includes an outer shell and an inner shell. The interior of the inner shell is configured with a tensioning mechanism for improving the stability of the rotary conveying of blanks, and a guide ring is fixedly connected to the inner wall of the outer shell;

[0007] The tensioning mechanism includes a second motor, the output end of the second motor is fixedly connected with a rotating disk, two different sliding grooves are formed on the upper and lower surfaces of the rotating disk, and sliding columns are slidably connected inside the upper and lower sliding grooves. One end of the upper sliding column is fixedly connected with a long push rod, one end of the lower sliding column is fixedly connected with a short sliding rod, one ends of the short sliding rod and the sliding column are both rotatably connected with a tensioning wheel, the surface of the tensioning wheel is meshed with a synchronous belt, a conveying plate is arranged on the outer side of the synchronous belt, and a plurality of synchronous wheels are meshed with the inner side of the synchronous belt.

[0008] Preferably, a limiting rod is slidably connected to the surface of the long push rod, a plurality of semi-circular grooves are formed inside the guiding ring, and a guiding groove is further formed inside the guiding ring. A magnetic strip is arranged on the inner wall of the guiding groove, and the magnetic strip and the conveying plate are magnetically connected. A first motor is arranged below the synchronous wheel, and a supporting ring is slidably connected below the conveying plate.

[0009] Preferably, a gain mechanism for improving the conveying stability is configured inside the conveying plate. The gain mechanism includes a connecting plate, one end of the connecting plate is rotatably connected with a matching plate through a pin shaft, one side of the matching plate is detachably connected with the conveying plate, a guiding plate is detachably connected to the other side of the conveying plate, a spring plate is slidably connected inside the conveying plate, and one end of the connecting plate is detachably connected with the synchronous belt.

[0010] Preferably, a swing plate is rotatably connected to the inside of the conveying plate through a pin shaft, a silica gel rod is detachably connected above the swing plate, a driving rod is fixedly connected to one side of the swing plate close to the center line of the conveying plate, one end of the driving rod is in sliding contact with a first convex block, the first convex block is fixedly connected to both sides of the supporting ring, and a second convex block is further fixedly connected to the corner of the supporting ring. An electric screw rod is arranged at the middle position of the second convex block.

[0011] Preferably, two moving blocks are slidably connected to the inside of the guiding plate, a sliding plate is connected above the moving blocks through a fixing rod, one side of the two moving blocks is in sliding contact with a wedge plate, one side of the wedge plate is fixedly connected with a connecting rod, the connecting rod is slidably connected with the conveying plate, and a return spring is arranged on the surface of the connecting rod.

[0012] Preferably, a compression tension spring is arranged between one side of the swing plate and the conveying plate, the first convex block is located at the middle position of the supporting ring, and a plurality of through grooves are formed on the inner shell side surface on one side of the first convex block.

[0013] Preferably, the limiting rod is fixedly connected with the inner shell, and the limiting rods are all arranged at a certain angle. The diameters of the semi-circular grooves formed inside the guiding ring are different, the short sliding rod is slidably connected with the inner shell, and a limiting groove is further formed above the inner side of the guiding ring.

[0014] Preferably, a plurality of springs are provided between the spring plate and the conveying plate. The guide plate is made of a magnetically conductive material. The guide plate is integrally provided in a convex shape, and the protruding portion is provided in an elliptical shape.

[0015] Preferably, the through grooves opened inside the inner shell are located at the positions of a plurality of tension wheels, and the lengths of the through grooves opened are different. Two groups of first convex blocks are symmetrically provided on the surface of the support ring.

[0016] Preferably, the synchronous pulley is rotationally connected to the inner shell through a rotating shaft. A plurality of synchronous pulleys are provided inside the bent corners of the guide ring. The upper end of the upper sliding column is slidably connected to the inner shell, and the lower end of the lower sliding column is also slidably connected to the inner shell.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the rotary plastic blank conveying device of the present invention, the rotation of the rotating disk drives the long push rod and the short sliding rod to move synchronously. By opening a chute on the surface of the rotating disk to control the moving distance of the long push rod and the short sliding rod, the inner side of the synchronous belt can be tensioned to different degrees, enabling the tension force of the synchronous belt during operation to be in a uniform state, thereby improving the stability of the blank during transportation.

[0019] 2. For the rotary plastic blank conveying device of the present invention, through the settings of the guide ring and the support ring, and by opening a plurality of semi-circular grooves inside the guide ring, when the guide plate drives the conveying plate to move to the convex position of the synchronous belt, the movement of the guide plate inside the semi-circular groove can further improve the stability of the operation of the conveying plate. At the same time, by providing adjustable second convex blocks at the bent corners of the support ring, the stability of the operation of the conveying plate passing through the bent corners can be further improved, and the stability of the blank transportation can be further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a schematic structural view of the present invention with the outer shell removed;

[0023] Figure 3 is in the present invention Figure 2 is a schematic bottom view structure of;

[0024] Figure 4 is a schematic structural view of the first motor and the synchronous pulley of the present invention;

[0025] Figure 5 is a schematic structural view of the tensioning mechanism of the present invention;

[0026] Figure 6 is the exploded view in the present invention Figure 5 ;

[0027] Figure 7 is the schematic structural view of the gain mechanism in the present invention;

[0028] Figure 8 is the schematic structural view of the spring plate in the present invention;

[0029] Figure 9 is the schematic structural view of the moving block and the sliding plate in the present invention;

[0030] Figure 10 is the schematic structural view of the connecting rod and the wedge plate in the present invention;

[0031] Figure 11 is the schematic structural view when the synchronous belt in the present invention is stretched;

[0032] Figure 12 is the schematic structural view of the semi-circular groove in the present invention;

[0033] In the figure: 1, outer shell; 2, inner shell; 3, conveying plate; 4, guiding ring; 5, supporting ring; 6, first motor; 7, synchronous pulley; 8, synchronous belt; 9, first convex block; 10, second convex block; 11, electric screw; 12, semi-circular groove; 100, tensioning mechanism; 101, second motor; 102, rotating disk; 103, long push rod; 104, tensioning pulley; 105, short sliding rod; 106, limiting rod; 107, sliding column; 200, gain mechanism; 201, connecting plate; 202, mating plate; 203, guiding plate; 204, silica gel rod; 205, swinging plate; 206, driving rod; 207, spring plate; 208, moving block; 209, sliding plate; 210, connecting rod; 211, wedge plate. Detailed implementation manners

[0034] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with the specific implementation manners.

[0035] As Figures 1 to 6 shown, a rotary plastic blank conveying device described in an embodiment of the present invention includes an outer shell 1 and an inner shell 2. A tensioning mechanism 100 for improving the rotary conveying stability of the blank is arranged inside the inner shell 2, and a guiding ring 4 is fixedly connected to the inner wall of the outer shell 1;

[0036] The tensioning mechanism 100 includes a second motor 101, and the output end of the second motor 101 is fixedly connected to a rotating disk 102. The upper and lower surfaces of the rotating disk 102 are provided with two different slide grooves, and slide columns 107 are slidably connected inside the upper and lower slide grooves. One end of the upper slide column 107 is fixedly connected to a long push rod 103, and one end of the lower slide column 107 is fixedly connected to a short slide bar 105. One end of the short slide bar 105 and the slide column 107 are both rotatably connected to a tensioning wheel 104, and the surface of the tensioning wheel 104 is meshedly connected to a synchronous belt 8. A conveying plate 3 is provided on the outer side of the synchronous belt 8, and a plurality of sets of synchronous wheels 7 are meshedly connected to the inner side of the synchronous belt 8.

[0037] The present invention takes into account that the plastic blanks need to be processed through multiple processes before they are fully formed to form plastic parts. In order to meet the requirements of multi-station processing of the blanks at the same time, a rotary conveying device is required to realize the dynamic multi-station flow of the blanks, and to improve the production efficiency by optimizing the path planning. The existing plastic blank conveyor generally uses a top-bearing conveying plate to transfer materials, but after long-term operation, the synchronous belt is prone to loosening and causing frequent vibrations, which affects the normal operation of the conveying plate and causes the blanks conveyed above the conveying plate to fall. However, when the existing conveying device is used, the blanks need to be placed on the conveying plate 3 for conveying. The stability of the blanks during the conveying process is closely related to the stability of the movement of the conveying plate 3. Therefore, the plastic blanks are first placed on the surface of the conveying plate 3, and then the conveying plate 3 is driven by the movement of the synchronous belt 8 to convey the blanks placed above it. Before the blanks are conveyed, the second motor 101 in the tensioning mechanism 100 is rotated to drive the rotating disk 102 to rotate 90°. The rotation of the rotating disk 102 can The long push rod 103 is driven to rotate 90 degrees. Since there are two different slide grooves on the upper and lower surfaces of the rotating disk 102, when the rotating disk 102 rotates, the slide column 107 on the upper surface will be driven to move through the slide groove on the upper surface. At this time, the movement of the upper slide column 107 can drive the four groups of long push rods 103 to move toward the corner of the synchronous belt 8. At this time, the movement of the long push rod 103 can drive the tensioning wheel 104 to apply thrust to the synchronous belt 8, which can stretch the synchronous belt 8 at the corner on one side of the synchronous wheel 7. At the same time, the rotation of the rotating disk 102 will also The slide column 107 is driven to move through the slide groove opened on the lower surface. The movement of the slide column 107 can drive the two groups of short slide bars 105 to move to the left and right sides of the shell 1. At this time, the short slide bar 105 can drive the tensioning wheel 104 to apply thrust to the middle position of the synchronous belt 8, so that the middle position of the synchronous belt 8 is also stretched. The synchronous belt 8 is stretched at multiple angles by multiple groups of tensioning wheels 104, which can improve the tension of the synchronous belt 8 during operation, thereby improving the stability of the conveying plate 3 installed on the surface of the synchronous belt 8 during operation, and improving the stability of blank conveying;

[0038] It should be noted that before the inner side of the synchronous belt 8 at the corner near the synchronous pulley 7 and the middle position is expanded, since multiple tension pulleys 104 are all closely attached to the inner side of the synchronous belt 8, when the position of the tension pulley 104 is adjusted, the tension pulley 104 can quickly expand the synchronous belt 8. Moreover, the tension pulley 104 is rotatably connected to the long push rod 103 and the short sliding rod 105, and the tension pulley 104 is internally meshed with the synchronous belt 8. At this time, even if the position of the tension pulley 104 is adjusted to expand the synchronous belt 8, it will not affect the normal operation of the synchronous belt 8. When multiple positions of the synchronous belt 8 are expanded, the tension of the synchronous belt 8 will increase. At this time, the synchronous belt 8 can also stably drive the conveying plate 3 and the blank on it to be smoothly conveyed during operation. After adjusting the tension of the synchronous belt 8, the synchronous belt 8 will drive the conveying plate 3 to operate, which can avoid the multiple tension pulleys 104 from meshing with the synchronous belt 8 during its operation, causing wear of the inner teeth of the synchronous belt 8, and can also avoid the situation of tooth skipping after the synchronous belt 8 is directly meshed with the tension pulley 104, affecting the normal conveying of the blank above the conveying plate 3, with high safety;

[0039] It should be further noted that when the synchronous pulley 7 drives the synchronous belt 8 to rotate, after the synchronous belt 8 bypasses the surface position of the synchronous pulley 7, the outer side of the synchronous belt 8 will be stretched, while the inner side will be compressed, and the synchronous belt 8 will be bent, resulting in the tension at the position of the synchronous belt 8 close to the synchronous pulley 7 being greater than the tension at the middle position. At the same time, since two different sliding grooves are provided on the upper and lower surfaces of the rotating disc 102, when the rotating disc 102 rotates, the moving distance of the long push rod 103 driven by the upper sliding groove through the sliding column 107 is less than the moving distance of the short sliding rod 105 driven by the sliding column 107 in the lower sliding groove. Therefore, at this time, the expanded arc of the synchronous belt 8 at the position close to the synchronous pulley 7 is less than the expanded arc of the synchronous belt 8 at the middle position, which can make the tension distribution on the surface of the synchronous belt 8 uniform after expansion, avoid the synchronous belt 8 from shaking during operation, affect the stability of the conveying plate 3 during operation, and can avoid the blank from falling off the surface of the conveying plate 3, further improving the stability of the blank conveying.

[0040] As Figures 5 to 6 shown, a limiting rod 106 is slidably connected to the surface of the long push rod 103. Multiple semi-circular grooves 12 are provided inside the guide ring 4, and a guide groove is also provided inside the guide ring 4. A magnetic strip is installed on the inner wall of the guide groove, and the magnetic strip is magnetically connected to the conveying plate 3. A first motor 6 is provided below the synchronous pulley 7, and a support ring 5 is slidably connected below the conveying plate 3.

[0041] During operation, when the synchronous belt 8 starts to transport the conveyor plate 3, in order to improve the stability of the conveyor plate 3 during the transportation process and improve the stability of the transportation of the blank placed above the conveyor plate 3, the first motor 6 is started to drive the synchronous wheel 7 to rotate. The rotation of the synchronous wheel 7 can engage the transmission to drive the synchronous belt 8 to rotate. The rotation of the synchronous belt 8 can drive the conveyor plate 3 to move, thereby transporting the blank above the conveyor plate 3. At this time, the movement of the synchronous belt 8 can provide power for the conveyor plate 3, and the guide ring 4 can guide the conveyor plate 3 through the guide groove provided inside, so that it can move smoothly above the support ring 5. It should be noted that by arranging a magnetic strip inside the guide ring 4, when the conveyor plate 3 moves above the support ring 5, one end of the conveyor plate 3 is magnetically adsorbed by the suction force of the magnetic strip, and at the same time, the stability of the conveyor plate 3 during operation can be further improved by cooperating with the support ring 5.

[0042] It should be further explained that, since multiple sets of tensioning wheels 104 apply thrust to the synchronous belt 8, the surface of the synchronous belt 8 will be stretched to form an arc surface of a certain angle, and the raised arc surface in the middle position has a larger diameter than the raised arc surface on the side close to the synchronous wheel 7. When the conveying plate 3 moves to the arc position generated on the surface of the synchronous belt 8, the conveying plate 3 will move a certain distance outward. At this time, multiple sets of semicircular grooves 12 are opened on the inner side of the guide ring 4. When the conveying plate 3 passes through the raised arc surface, a certain deviation will occur. However, since one end of the conveying plate 3 is inserted into the interior of the guide ring 4, and a magnetic strip is provided inside the guide ring 4, the magnetic strip located on the inner side of the semicircular groove 12 can still magnetically adsorb one end of the conveying plate 3, so that one end of the conveying plate 3 can continue to slide inside the guide ring 4 after the deviation occurs, and the conveying plate 3 will not shake. The conveying plate 3 can always be transported in a stable state, which can improve the stability of the blank conveying.

[0043] like Figures 7 to 8 As shown, the interior of the conveying plate 3 is configured with a gain mechanism 200 for improving its conveying stability, and the gain mechanism 200 includes a connecting plate 201, one end of the connecting plate 201 is rotatably connected to a matching plate 202 through a pin shaft, one side of the matching plate 202 is detachably connected to the conveying plate 3, and the other side of the conveying plate 3 is detachably connected to a guide plate 203, a spring plate 207 is slidably connected to the interior of the conveying plate 3, and one end of the connecting plate 201 is detachably connected to the synchronous belt 8.

[0044] The present invention also considers that when multiple sets of tension pulleys 104 support an arc surface on the surface of the synchronous belt 8, although the stability of the synchronous belt 8 during operation can be improved, thereby improving the stability of the movement of the conveying plate 3 and facilitating the smooth conveyance of the blank, when the conveying plate 3 contacts the convex arc surface on the surface of the synchronous belt 8, the conveying plate 3 will have a certain offset during movement. Therefore, a spring plate 207 is slidably arranged at the bottom of the conveying plate 3, and one side of the spring plate 207 contacts one side of the support ring 5. When the conveying plate 3 has an offset, it will drive the spring plate 207 to closely adhere to one side of the support ring 5. At this time, since the spring plate 207 is slidably connected to the conveying plate 3 and multiple sets of springs are connected between them, when the conveying plate 3 has an offset, the spring plate 207 can slide inside it and compress the springs. At this time, through the extrusion force of the springs and the sliding of the guide plate 203 in the guide groove opened in the guide ring 4, when the conveying plate 3 has an offset, the guide plate 203 can continue to closely adhere to the inner side of the semi-circular groove 12, enabling the conveying plate 3 to slide smoothly, avoiding the shaking of the conveying plate 3 after passing through the convex arc surface, and further improving the stability of the conveyance of the blank;

[0045] It should be noted that since the arc surfaces supported by multiple sets of tension pulleys 104 on the synchronous belt 8 are fixed, and the diameter of the arc surface in the middle position is larger than the diameter of the arc surface near the synchronous pulley 7 side, the positions of the multiple sets of semi-circular grooves 12 opened in the guide ring 4 are also fixed, and the diameter of the semi-circular groove 12 opened in the middle position of the guide ring 4 is also larger than the diameter of the semi-circular groove 12 opened near the synchronous pulley 7 side. When the connecting plate 201 passes over the convexity on the surface of the synchronous belt 8, since the convexity is arc-shaped, at this time, the connecting plate 201 will have a certain angular offset before reaching the outermost point of the convexity. In order to prevent the angular offset of the connecting plate 201 from driving the conveying plate 3 to have an offset, the connecting plate 201 is rotatably connected to the matching plate 202 through a pin shaft, and there is a gap between both sides of the connecting plate 201 and the matching plate 202. After the connecting plate 201 has an angular offset, it will swing inside the gap generated between it and the matching plate 202, which can avoid the situation that the conveying plate 3 also has an angular offset, enabling the conveying plate 3 to always move in a stable state without affecting the conveyance of the blank and having good stability.

[0046] As Figures 7 to 9 shown, a swing plate 205 is rotatably connected to the inside of the conveying plate 3 through a pin shaft. A silica gel rod 204 is detachably connected above the swing plate 205. One side of the swing plate 205 close to the center line of the conveying plate 3 is fixedly connected to a driving rod 206. One end of the driving rod 206 is in sliding contact with a first convex block 9, and the first convex block 9 is fixedly connected to both sides of the support ring 5. A second convex block 10 is also fixedly connected to the corner of the support ring 5, and an electric screw 11 is arranged at the middle position of the second convex block 10.

[0047] During operation, since the diameter of the protrusion at the middle position of the synchronous belt 8 is larger than that of the protrusion near the synchronous pulley 7, when the conveying plate 3 is deflected after passing over the protrusion at the middle position of the synchronous belt 8. In order to further improve the stability of the conveying plate 3 after deflection, a first bump 9 is provided at the middle position of the support ring 5. When the conveying plate 3 moves to both sides of the first bump 9, the two sets of active rods 206 will come into contact with the first bump 9. Since the first bump 9 is fixed on both sides of the support ring 5, the active rods 206 will be pushed by the first bump 9 to move. The movement of the active rods 206 can drive the swing plate 205 to swing around the pin shaft. The swing of the swing plate 205 can drive the silica gel rod 204 to limit the workpiece above the conveying plate 3 until the active rods 206 no longer contact the surface of the first bump 9, and the silica gel rod 204 and the swing plate 205 release the limit on the workpiece, which can prevent the workpiece from shaking due to the deflection force of the conveying plate 3 when the conveying plate 3 is deflected at this time, and can further improve the stability of the conveying plate 3 when passing over the protrusion position;

[0048] It should be further noted that since both the guiding ring 4 and the support ring 5 are annularly arranged, when the conveying plate 3 rotates, it will pass through the corner of the support ring 5. At this time, when the conveying plate 3 moves through the corner of the support ring 5, a force will be exerted on the workpiece above it due to the centrifugal force. In order to prevent the conveying plate 3 from affecting the conveying of the workpiece when passing through the corners of the guiding ring 4 and the support ring 5, multiple sets of electric screws 11 are provided at the corners of the support ring 5. When the conveying plate 3 passes through the position of the corner of the support ring 5, the electric screws 11 can also expand the active rods 206 at this time, so that the silica gel rod 204 and the swing plate 205 can limit the workpiece again, which can avoid the situation of the workpiece falling when the conveying plate 3 drives the workpiece to be conveyed, and can further improve the stability of the workpiece conveying;

[0049] It should be further noted that since the masses of the workpieces are different, when the conveying plate 3 drives different workpieces to be conveyed, the centrifugal forces generated by the corners of the guiding ring 4 and the support ring 5 are also different. Therefore, by arranging the electric screws 11 inside the second bump 10, the distance between the second bump 10 and the support ring 5 can be adjusted, so as to control the swing amplitude of the active rods 206 driving the swing plate 205 through the second bump 10, and further limit the workpieces of different masses, which can improve the stability of the workpiece above the conveying plate 3 when the conveying plate 3 drives the workpiece to pass through the corner.

[0050] As Figures 9 to 10As shown, two sets of moving blocks 208 are slidably connected inside the guide plate 203. Above the moving blocks 208, a sliding plate 209 is connected by fixing rods. One side of the two sets of moving blocks 208 is in sliding contact with a wedge plate 211. One side of the wedge plate 211 is fixedly connected to a connecting rod 210. The connecting rod 210 is slidably connected to the conveying plate 3, and a return spring is arranged on the surface of the connecting rod 210.

[0051] During operation, when the conveying plate 3 moves to the middle position of the synchronous belt 8 and contacts the protrusion and undergoes a position offset, since semi-circular grooves 12 with different diameters are opened inside the guide ring 4, when the conveying plate 3 is offset, it will cause the guide plate 203 to move towards the inner side of the semi-circular groove 12. At this time, since multiple sets of driving rods 206 are in contact with the surface of the first convex block 9, it drives the swing plate 205 to swing around the pin shaft. At this time, the swing of the swing plate 205 can push the connecting rod 210 to slide inside the conveying plate 3. The sliding of the connecting rod 210 can push the wedge plate 211 to move at the middle position between the two sets of moving blocks 208. Since the wedge plate 211 is wedge-shaped, when the wedge plate 211 contacts the moving block 208, at this time, the moving block 208 will be subjected to a thrust and move outward inside the guide plate 203. When the guide plate 203 contacts the inner side of the semi-circular groove 12, at the same time, the two sets of moving blocks 208 will slide out from the inside of the guide plate 203, so as to increase the overall contact area between the guide plate 203 and the inner side of the semi-circular groove 12. The increase in the contact area can further improve the overall sliding stability of the guide plate 203 inside the semi-circular groove 12, thereby improving the stability of the conveying plate 3 during continued operation after the offset;

[0052] It should be further noted that when the conveying plate 3 runs to the corner position of the guide ring 4 and the support ring 5, at this time, the moving block 208 will still slide out from the inside of the guide plate 203. At this time, even if the guide plate 203 does not contact the semi-circular groove 12 opened inside the guide ring 4, it can contact the inner wall of the guide ring 4, improving the adsorption force of the magnetic strip inside the guide ring 4 on the guide plate 203, and can further improve the overall stability of the conveying plate 3 when moving through the corner of the guide ring 4 and the support ring 5. At this time, the movement of the moving block 208 can drive the sliding plate 209 to move above the guide plate 203. The movement of the sliding plate 209 can increase the contact area when the guide plate 203 slides inside the guide ring 4, and can also improve the stability of the movement of the conveying plate 3.

[0053] As Figures 8 to 9 shown, an extrusion tension spring is arranged between one side of the swing plate 205 and the conveying plate 3. The first convex block 9 is located at the middle position of the support ring 5, and multiple through grooves are opened on the side of the inner shell 2 on one side of the first convex block 9.

[0054] During operation, when the swing plate 205 swings under the extrusion force of the driving rod 206, the swing plate 205 will swing at a certain angle inside the conveying plate 3 around the pin shaft. The swing of the swing plate 205 is determined by the length of the first convex block 9 and the electric screw rod 11 protruding from the side of the support ring 5. And the protruding length of the first convex block 9 is less than the protruding length of the second convex block 10 on the surface of the support ring 5. Therefore, when the driving rod 206 moves by contacting its surface through the first convex block 9 and the second convex block 10, the moving distances are also different. At this time, the sizes of the spaces for limiting the blank above the conveying plate 3 are also different. When the conveying plate 3 runs to the protruding position on the surface of the synchronous belt 8, the offset of the conveying plate 3 itself will drive the blank to move synchronously, which can reserve enough space for the blank and prevent the blank from contacting the driving rod 206 and the swing plate 205 when being forced during the offset following the conveying plate 3, thus protecting the blank. When the conveying plate 3 runs to the corner position of the support ring 5, the swing plate 205 and the driving rod 206 can fully limit the blank, preventing the blanks of different masses from colliding and contacting the swing plate 205 and the driving rod 206 directly after being affected by the centrifugal force, which may cause damage to the blanks. Therefore, shortening the distance between the two groups of swing plates 205 can effectively and fully limit and protect the blanks passing through the corner, improving the safety of the blanks during stable conveying and having good protection performance.

[0055] As Figures 5 to 6 shown, the limiting rod 106 is fixedly connected to the inner shell 2, and the limiting rods 106 are all inclined at a certain angle. The diameters of the semicircular grooves 12 formed inside the guiding ring 4 are different. The short sliding rod 105 is slidably connected to the inner shell 2, and a limiting groove is also formed above the inner side of the guiding ring 4.

[0056] During operation, when one end of the long push rod 103 drives the tensioning wheel 104 to expand the synchronous belt 8 near the synchronous wheel 7, in order to improve the stability of the long push rod 103 during movement, by providing the limiting rod 106 on the surface of the long push rod 103, the accuracy of the movement of the long push rod 103 can be improved. And since the limiting rod 106 is fixedly connected to the inner shell 2, when the long push rod 103 moves, it can not only be limited by the limiting rod 106, but also the chute inside the rotating disk 102 can limit it, effectively improving the stability of the operation of the long push rod 103 and preventing the position of the tensioning wheel 104 and the synchronous belt 8 from being inaccurate when the long push rod 103 drives the tensioning wheel 104 to expand the inner side of the synchronous belt 8, thus damaging the teeth on the inner side of the synchronous belt 8 and improving the protection of the synchronous belt 8;

[0057] It should be noted that when the guide plate 203 is limited and slides under the magnetic strip adsorption force inside the guide ring 4, at this time, by opening a limit groove above the guide ring 4, the guide plate 203 can drive the sliding plate 209 to slide inside the limit groove during the sliding process, which can prevent the guide plate 203 from losing magnetic connection with the magnetic strip during the sliding process, further improve the sliding stability of the guide plate 203, thereby improving the stability of the blank conveying above the conveying plate 3 and avoiding the phenomenon of the blank falling.

[0058] As Figure 8 shown, multiple groups of springs are provided between the spring plate 207 and the conveying plate 3. The guide plate 203 is made of a magnetically conductive material. The guide plate 203 is integrally set in a convex shape, and the protruding part is set in an elliptical shape.

[0059] During operation, in order to facilitate the smooth movement of one end of the guide plate 203 when it slides to the position of the semi-circular groove 12 inside the guide ring 4, one end of the guide plate 203 is set to be elliptical and moves inside the guide ring 4. At the same time, it is convenient for the sliding block 208 of the guide plate 203 to slide out during the movement and also be closely attached to the semi-circular groove 12, which can effectively improve the movement stability of the guide plate 203. It should be noted that the sliding distance of the two sliding blocks 208 inside the guide plate 203 is determined by the swing amplitude of the swing plate 205. When the guide plate 203 passes through the semi-circular groove 12 at the middle position, at this time, the pushing force of the active rod 206 by the first convex block 9 is small, so the sliding distance of the sliding block 208 inside the guide plate 203 is short, so that the sliding block 208 will not completely extend out of the guide plate 203, thus affecting the sliding stability of the guide plate 203 inside the semi-circular groove 12, which can improve the sliding efficiency of the guide plate 203 and the operation stability of the conveying plate 3.

[0060] As Figures 11 to 12 shown, the through grooves opened inside the inner shell 2 are located at the positions of multiple groups of tension wheels 104, and the lengths of the opened through grooves are different. Two groups of first convex blocks 9 are symmetrically arranged on the surface of the support ring 5.

[0061] During operation, the position adjustment of multiple tension pulleys 104 will push the inside of the synchronous belt 8, causing protrusions on multiple surfaces of the synchronous belt 8. At this time, multiple through grooves are opened on both sides of the inner shell 2, which can enable the tension pulleys 104 to move outward inside the inner shell 2, preventing the disengagement between the tension pulleys 104 and the synchronous belt 8, and improving the contact between the tension pulleys 104 and the synchronous belt 8. It should be noted that due to the different movement distances between multiple tension pulleys 104, the length of the through groove opened at the middle position of the inner shell 2 is greater than the length of the through groove opened at the position of the tension pulley 104 closer to the synchronous pulley 7. This can effectively prevent the short length of the through groove opened at the middle position of the inner shell 2 from affecting the contact wear between the synchronous belt 8 and the inner shell 2 when the synchronous belt 8 rotates after the tension pulley 104 meshes with the inner side of the synchronous belt 8. At the same time, when the length of the through groove opened closer to the synchronous pulley 7 is too long, too much surface of the synchronous belt 8 is exposed to the outside, affecting the normal operation of the synchronous belt 8.

[0062] As Figures 5 to 6 shown, the synchronous pulley 7 is rotationally connected to the inner shell 2 through a rotating shaft. Multiple synchronous pulleys 7 are arranged inside the bend of the guide ring 4. The upper end of the upper sliding column 107 is slidably connected to the inner shell 2, and the lower end of the lower sliding column 107 is also slidably connected to the inner shell 2.

[0063] During operation, by arranging multiple sliding columns 107 to slide inside the inner shell 2, it can effectively cooperate with the limiting rod 106 and the sliding groove opened inside the rotating disk 102 to limit the movement of the long push rod 103 and the short sliding rod 105, enabling the tension pulley 104 at one end of the long push rod 103 and the tension pulley 104 at one end of the short sliding rod 105 to smoothly and accurately mesh with the inner side of the synchronous belt 8, and further improving the protection of the synchronous belt 8.

[0064] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary plastic blank conveying device, characterized in that: It includes an outer shell and an inner shell. A tensioning mechanism for improving the rotational conveying stability of the embryo parts is configured inside the inner shell, and a guide ring is fixedly connected to the inner wall of the outer shell; The tensioning mechanism includes a second motor. The output end of the second motor is fixedly connected to a rotating disk. Two different chutes are opened on the upper and lower surfaces of the rotating disk, and sliding columns are slidably connected inside the upper and lower chutes. One end of the upper sliding column is fixedly connected to a long push rod, and one end of the lower sliding column is fixedly connected to a short sliding rod. One end of the short sliding rod and the sliding column are both rotatably connected to a tensioning wheel. A synchronous belt is meshed on the surface of the tensioning wheel. A conveying plate is arranged on the outer side of the synchronous belt, and a plurality of synchronous wheels are meshed on the inner side of the synchronous belt.

2. The rotary plastic blank conveying device according to claim 1, characterized in that: A limiting rod is slidably connected to the surface of the long push rod. A plurality of semi-circular grooves are opened inside the guide ring, and a guide groove is also opened inside the guide ring. A magnetic strip is arranged on the inner wall of the guide groove, and the magnetic strip and the conveying plate are magnetically connected. A first motor is arranged below the synchronous wheel, and a support ring is slidably connected below the conveying plate.

3. A rotary plastic blank conveying device according to claim 1, characterized in that: A gain mechanism for improving its conveying stability is configured inside the conveying plate. The gain mechanism includes a connecting plate. One end of the connecting plate is rotatably connected to a matching plate through a pin shaft. One side of the matching plate is detachably connected to the conveying plate. A guide plate is detachably connected to the other side of the conveying plate. A spring plate is slidably connected inside the conveying plate. One end of the connecting plate is detachably connected to the synchronous belt.

4. A rotary plastic blank conveying device according to claim 3, characterized in that: A swing plate is rotatably connected to the inside of the conveying plate through a pin shaft. A silica gel rod is detachably connected above the swing plate. One side of the swing plate close to the center line of the conveying plate is fixedly connected to a driving rod. One end of the driving rod is in sliding contact with a first convex block. The first convex block is fixedly connected to both sides of the support ring. A second convex block is also fixedly connected to the corner of the support ring. An electric screw rod is arranged at the middle position of the second convex block.

5. A rotary plastic blank conveying device according to claim 3, characterized in that: Two moving blocks are slidably connected to the inside of the guide plate. A sliding plate is connected above the moving blocks through a fixed rod. One side of the two moving blocks is in sliding contact with a wedge plate. One side of the wedge plate is fixedly connected to a connecting rod. The connecting rod is slidably connected to the conveying plate, and a return spring is arranged on the surface of the connecting rod.

6. A rotary plastic blank conveying device according to claim 4, characterized in that: An extrusion tension spring is arranged between one side of the swing plate and the conveying plate. The first convex block is located at the middle position of the support ring. A plurality of through grooves are opened on the side surface of the inner shell on one side of the first convex block.

7. A rotary plastic blank conveying device according to claim 2, characterized in that: The limiting rod is fixedly connected to the inner shell, and the limiting rods are all inclined at a certain angle. The diameters of the semi-circular grooves opened inside the guide ring are different. The short sliding rod is slidably connected to the inner shell. A limiting groove is also opened above the inner side of the guide ring.

8. A rotary plastic blank conveying device according to claim 3, characterized in that: A plurality of springs are arranged between the spring plate and the conveying plate. The guide plate is made of a magnetically conductive material. The guide plate is integrally convex-shaped, and the protruding part is elliptical in shape.

9. The rotary plastic blank conveying device according to claim 6, wherein: The through grooves opened inside the inner shell are located at the positions of a plurality of tensioning wheels, and the lengths of the through grooves opened are different. Two groups of the first convex blocks are symmetrically arranged on the surface of the support ring.

10. A rotary plastic blank conveying device according to claim 1, characterized in that: The synchronous pulley is rotatably connected to the inner shell through a rotating shaft, and multiple groups of the synchronous pulleys are arranged inside the corner of the guide ring. The upper end of the upper sliding column is slidably connected to the inner shell, and the lower end of the lower sliding column is also slidably connected to the inner shell.

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