Double-layer shaping belt conveyor

Abstract

The invention relates to the technical field of shaping machine equipment, in particular to a double-layer shaping belt conveyor which solves the problems that when material bags are shaped in the prior art, air in the irregular material bags cannot be exhausted, the phenomenon of stack collapse of the material bags is easily caused, and the material bags of different specifications cannot be shaped into different sizes. The double-layer shaping belt conveyor comprises a conveying belt conveyor, a flattening belt conveyor and a shaping adjusting assembly, the flattening belt conveyor is installed above the conveying belt conveyor, the shaping adjusting assembly is installed on the outer side of the conveying belt conveyor, and the front end of the conveying belt conveyor and the front end of the flattening belt conveyor are each provided with two belt tensioning assemblies. The conveying belt machine comprises a belt machine supporting frame. The double-layer belt conveyor is used for stably conveying the material bags, then redundant gas in the material bags can be exhausted, the shaping effect is achieved, the shaping efficiency is high, and the requirement for shaping the material bags of different specifications into different sizes can be met.

Description

Technical Field

[0001] The invention relates to the technical field of shaping machine equipment, in particular to a double-layer shaping belt machine. Background Art

[0002] With the advancement of industrialization and Industry 4.0, the requirements for automation, variety, miniaturization and high efficiency are becoming more and more obvious. At present, the proportion of social labor costs in enterprises is increasing. The use of automated packaging equipment to replace manual packaging and transportation work has become a new development direction, making automated equipment more efficient, fast, intelligent and more automated. Loose or irregular material bags need to be shaped. The main purpose of material bag shaping is to use specific equipment and processes to shape loose or irregular material bags into a regular and flat state for easy transportation, storage and subsequent processing.

[0003] However, when shaping the material bags, the air inside the irregular material bags cannot be discharged, which may easily cause the material bags to collapse, and the material bags of different specifications cannot be shaped into different sizes; therefore, it does not meet the existing needs. We have proposed a double-layer shaping belt conveyor. Summary of the invention

[0004] The object of the present invention is to provide a double-layer shaping belt conveyor to solve the problems raised in the above background technology that when shaping material bags, the air inside the irregular material bags cannot be discharged, which easily causes the material bags to collapse, and different specifications of material bags cannot be shaped into different sizes.

[0005] To achieve the above object, the present invention provides the following technical solutions: a double-layer shaping belt conveyor, comprising a conveying belt conveyor, a flattening belt conveyor and a shaping adjustment component, wherein the flattening belt conveyor is installed above the conveying belt conveyor, the shaping adjustment component is installed outside the conveying belt conveyor, two belt tensioning components are installed at the front ends of the conveying belt conveyor and the flattening belt conveyor, the conveying belt conveyor comprises a belt conveyor support frame, and a first housing is fixedly installed on the upper end of the belt conveyor support frame; The flattening belt conveyor includes a second casing, a flattening belt is movably installed on the inner side of the second casing, the front ends of both sides of the second casing are rotatably connected to front supporting arms, the upper ends of the front supporting arms are provided with a front upper rotating shaft, and the bottom ends of the front supporting arms are provided with a front lower rotating shaft, the rear ends of both sides of the second casing are rotatably connected to rear supporting arms, the upper ends of the rear supporting arms are provided with a rear upper rotating shaft, and the bottom ends of the rear supporting arms are provided with a rear lower rotating shaft, a second driven roller bracket is fixedly installed on the front end of the second casing, a second active roller bracket is fixedly installed on the rear end of the second casing, a second driving motor is fixedly installed on the upper end of the second active roller bracket, and a second sprocket transmission box is fixedly installed on one side of the second active roller bracket.

[0006] Preferably, the conveyor belt machine also includes a conveyor belt movably connected to the first housing, a first driven roller bracket is fixedly installed at the front end of the first housing, a first active roller bracket is fixedly installed at the rear end of the first housing, a first sprocket transmission box is fixedly installed on one side of the first active roller bracket, and a first driving motor is installed on the lower end surface of the first active roller bracket.

[0007] Preferably, the shaping adjustment assembly includes a supporting stand, the upper end of the supporting stand is rotatably connected to a winding wheel, an operating handle is installed on one side of the winding wheel, a transmission mechanism is installed between the winding wheel and the operating handle, steel cables are wound on the outer sides of both ends of the winding wheel, two or four pull rods are installed at one end of two of the steel cables, and a spring is provided between two adjacent pull rods.

[0008] Preferably, the belt tensioning assembly includes a roller adjusting column, a connecting sleeve is fixedly installed on the inner side of the middle part of the roller adjusting column, an adjusting screw is installed on the inner side of the connecting sleeve, a locking cover is fixedly installed on one end of the roller adjusting column, and three guide balls are provided between the upper and lower ends of the roller adjusting column and the locking cover.

[0009] Preferably, a shaped material bag is provided between the conveyor belt and the flattening belt, the conveyor belt rotates counterclockwise, the conveyor belt rotates in opposite directions to the flattening belt, and a shaped material bag is provided on one side of the shaped material bag.

[0010] Preferably, the first housing is rotatably connected to the bottom end of the front support arm via a front lower shaft, the upper end of the front support arm is rotatably connected to the second housing via a front upper shaft, the bottom end of the rear support arm is rotatably connected to the first housing via a rear lower shaft, the upper end of the rear support arm is rotatably connected to the second housing via a rear upper shaft, a bearing seat is provided at the upper end of the front support arm, the bearing seat is located above the front upper shaft, the front support arm is rotatably connected to the bearing seat, and the bottom ends of the two pull rods are fixedly connected to the bearing seats.

[0011] Preferably, driven rollers are provided on the inner sides of the bottom ends of the first driven roller bracket and the second driven roller bracket, both ends of the driven rollers are inserted into the inner sides of the roller adjusting columns and are rotatably connected to the roller adjusting columns through bearings, one end of the four roller adjusting columns are slidably connected to the first driven roller bracket and the second driven roller bracket through guide balls, the four adjusting screws are rotatably connected to the first driven roller bracket and the second driven roller bracket, the adjusting screws penetrate the first driven roller bracket and the second driven roller bracket and are threadedly connected to the connecting sleeve.

[0012] Preferably, active rollers are provided on the inner sides of the first active roller bracket and the second active roller bracket, both ends of the active roller are rotatably connected to the first active roller bracket and the second active roller bracket through bearings, the front and rear ends of the conveying belt are connected to the first driven roller bracket and the first active roller bracket through the driven roller and the active roller respectively, and the front and rear ends of the flattening belt are connected to the second driven roller bracket and the second active roller bracket through the driven roller and the active roller respectively.

[0013] Preferably, the inner sides of the first sprocket transmission box and the second sprocket transmission box are each provided with two sprockets and a chain, the two adjacent sprockets are connected by a chain transmission, the output end of the first drive motor is connected to one of the active rollers on the inner side of the first active roller bracket by a sprocket and chain transmission, and the output end of the second drive motor is connected to the other active roller on the inner side of the second active roller bracket by a sprocket and chain transmission.

[0014] Preferably, the transmission mechanism consists of a worm wheel and a worm, the worm wheel is sleeved and fixed on the middle part of the reel, the bottom end of the operating handle is fixedly connected to the worm, and the operating handle is rotatably connected to the supporting stand.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is composed of a worm gear and a worm through a transmission mechanism. By rotating the operating handle, the operating handle is connected through the meshing between the teeth of the worm gear and the worm gear to drive the winding wheel to rotate at the upper end of the supporting frame. When the winding wheel winds the steel cable, the pull rod and the spring can drive the bearing seat to rotate relative to the front support arm, so that the upper end of the front support arm swings relative to the second housing, and the bottom end of the front support arm swings relative to the first housing through the front lower rotating shaft. Then, the second housing can drive the flattening belt to adjust the spacing relative to the conveying belt under the synchronous swinging action of the rear support arm, so as to realize the shaping of material bags into different sizes, and can be suitable for material bags of different specifications; 2. The present invention drives the active roller inside the first active roller bracket to rotate through the first driving motor via the sprocket and the chain, and at the same time, the second driving motor drives the active roller inside the second active roller bracket to rotate through the sprocket and the chain, so that the pre-shaping material bag can be smoothly conveyed from right to left through the conveying belt and the flattening belt, and the spacing between the conveying belt and the flattening belt is stable, so that when the conveying belt and the flattening belt convey the pre-shaping material bag, the excess gas in the pre-shaping material bag can be squeezed and escaped to achieve the shaping effect, the shaping efficiency is high, and the requirements of shaping different specifications of material bags into different sizes can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall operation of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the conveyor belt machine of the present invention; Figure 4 It is a structural schematic diagram of the flattening belt conveyor of the present invention; Figure 5 It is a structural schematic diagram of the shaping and adjusting component of the present invention; Figure 6 It is a structural schematic diagram of the belt tensioning assembly of the present invention.

[0017] In the figure: 1, conveyor belt; 101, belt conveyor support frame; 102, first housing; 103, first drive motor; 104, first active roller bracket; 105, conveyor belt; 106, first driven roller bracket; 107, first sprocket transmission box; 2, flattening belt conveyor; 201, second housing; 202, flattening belt; 203, front support arm; 204, rear support arm; 205, second driven roller bracket; 206, front lower shaft; 207, front upper shaft; 208, rear lower shaft; 2 09, rear upper rotating shaft; 210, second active roller bracket; 211, second driving motor; 212, second sprocket transmission box; 3, shaping adjustment assembly; 301, supporting stand; 302, winding wheel; 303, transmission mechanism; 304, operating handle; 305, pull rod; 306, spring; 4, material bag before shaping; 5, material bag after shaping; 6, belt tensioning assembly; 601, roller adjustment column; 602, connecting sleeve; 603, adjusting screw; 604, locking cover; 605, guide ball. DETAILED DESCRIPTION

[0018] 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.

[0019] The first drive motor 103 (model: YS7134) and the second drive motor 211 (model: YEJ3-112M-4) mentioned in the present invention can be purchased from the market or obtained through private customization.

[0020] See also Figures 1 to 3The present invention provides an embodiment: a double-layer shaping belt conveyor, comprising a conveying belt conveyor 1, a flattening belt conveyor 2 and a shaping adjustment component 3, the conveying belt conveyor 1 comprises a belt conveyor support frame 101, a first housing 102 is fixedly installed on the upper end of the belt conveyor support frame 101, a conveying belt 105 is movably connected to the inner side of the first housing 102, a first driven roller bracket 106 is fixedly installed at the front end of the first housing 102, a first active roller bracket 104 is fixedly installed at the rear end of the first housing 102, a first sprocket transmission box 107 is fixedly installed on one side of the first active roller bracket 104, and a first driving motor 103 is installed on the lower end surface of the first active roller bracket 104, and the flattening belt conveyor 2 can be supported and the material bags can be smoothly conveyed through the conveying belt conveyor 1.

[0021] See also Figure 2 and Figure 4 A flattening belt conveyor 2 is installed above the conveyor belt conveyor 1. The flattening belt conveyor 2 includes a second housing 201. A flattening belt 202 is movably installed inside the second housing 201. The front ends of both sides of the second housing 201 are rotatably connected to front arms 203. The upper ends of the front arms 203 are provided with a front upper rotating shaft 207. The bottom ends of the front arms 203 are provided with a front lower rotating shaft 206. The rear ends of both sides of the second housing 201 are rotatably connected to rear arms 204. The upper ends of the rear arms 204 are provided with a rear upper rotating shaft 209. The bottom ends of the rear arms 204 are provided with a rear lower rotating shaft 208. The first housing 102 is rotatably connected to the bottom ends of the front arms 203 through the front lower rotating shaft 206. The upper end of the front support arm 203 is rotatably connected to the second housing 201 through the front upper shaft 207, the bottom end of the rear support arm 204 is rotatably connected to the first housing 102 through the rear lower shaft 208, and the upper end of the rear support arm 204 is rotatably connected to the second housing 201 through the rear upper shaft 209. By adjusting the shaping adjustment component 3, the upper end of the front support arm 203 swings relative to the second housing 201, and the bottom end of the front support arm 203 swings relative to the first housing 102 through the front lower shaft 206, so that the second housing 201 can drive the flattening belt 202 to adjust the spacing relative to the conveying belt 105 under the synchronous swinging action of the rear support arm 204; A second driven roller support 205 is fixedly installed at the front end of the second housing 201, a second active roller support 210 is fixedly installed at the rear end of the second housing 201, a second driving motor 211 is fixedly installed at the upper end of the second active roller support 210, a second sprocket transmission box 212 is fixedly installed on one side of the second active roller support 210, active rollers are arranged on the inner sides of the first active roller support 104 and the second active roller support 210, both ends of the active rollers are rotatably connected with the first active roller support 104 and the second active roller support 210 through bearings, the front and rear ends of the conveying belt 105 are connected with the first driven roller support 106 and the first active roller support 104 through the driven roller and the active roller respectively, the front and rear ends of the flattening belt 202 are connected with the second driven roller support 205 and the second active roller support 210 through the driven roller and the active roller respectively, so that the conveying belt 105 and the flattening belt 202 are transmitted when the active roller and the driven roller rotate; Two sprockets and a chain are provided on the inner side of the first sprocket transmission box 107 and the second sprocket transmission box 212, and the two adjacent sprockets are connected by a chain transmission. The output end of the first drive motor 103 is connected to one of the active rollers on the inner side of the first active roller bracket 104 by the sprocket and chain transmission, and the output end of the second drive motor 211 is connected to the other active roller on the inner side of the second active roller bracket 210 by the sprocket and chain transmission, so that the first drive motor 103 drives the active roller on the inner side of the first active roller bracket 104 to rotate through the sprocket and chain, and at the same time, the second drive motor 211 drives the active roller on the inner side of the second active roller bracket 210 to rotate through the sprocket and chain.

[0022] See also Figure 2 and Figure 5 , a shaping adjustment component 3 is installed on the outer side of the conveyor belt machine 1, and the shaping adjustment component 3 includes a supporting frame 301, and the upper end of the supporting frame 301 is rotatably connected to a winding wheel 302, and an operating handle 304 is installed on one side of the winding wheel 302, and a transmission mechanism 303 is installed between the winding wheel 302 and the operating handle 304, and steel cables are wound on the outer sides of both ends of the winding wheel 302, and two or four pull rods 305 are installed at one end of the two steel cables. A bearing seat is provided at the upper end of the front support arm 203, and the bearing seat is located above the front upper rotating shaft 207. The front support arm 203 is rotatably connected to the bearing seat, and the bottom ends of the two pull rods 305 are fixedly connected to the bearing seat. When the winding wheel 302 winds the steel cable, it can drive the bearing seat to rotate relative to the front support arm 203 through the pull rod 305 and the spring 306; A spring 306 is provided between two adjacent pull rods 305. The transmission mechanism 303 consists of a worm wheel and a worm. The worm wheel is fitted and fixed in the middle of the winding wheel 302. The bottom end of the operating handle 304 is fixedly connected to the worm. The operating handle 304 is rotatably connected to the support frame 301, so that the operating handle 304 drives the winding wheel 302 to rotate on the upper end of the support frame 301 through the meshing connection between the teeth of the worm wheel and the worm.

[0023] See also Figure 3 , Figure 4 and Figure 6 , two belt tensioning assemblies 6 are installed at the front end of the conveyor belt machine 1 and the flattening belt machine 2. The belt tensioning assembly 6 includes a roller adjusting column 601. A connecting sleeve 602 is fixedly installed on the inner side of the middle part of the roller adjusting column 601. An adjusting screw 603 is installed on the inner side of the connecting sleeve 602. The four adjusting screws 603 are rotatably connected with the first driven roller bracket 106 and the second driven roller bracket 205. The adjusting screw 603 penetrates the first driven roller bracket 106 and the second driven roller bracket 205 and is connected to the connecting sleeve 602 by threads. When the adjusting screw 603 is rotated, the driven roller can be driven to slide and adjust on the inner side of the first driven roller bracket 106 and the second driven roller bracket 205 through the connecting sleeve 602 and the roller adjusting column 601, so that the tightness of the conveyor belt 105 and the flattening belt 202 can be adjusted; A locking cover 604 is fixedly installed at one end of the roller adjustment column 601, and three guide balls 605 are provided between the upper and lower ends of the roller adjustment column 601 and the locking cover 604. Driven rollers are provided on the inner sides of the bottom ends of the first driven roller bracket 106 and the second driven roller bracket 205. Both ends of the driven rollers are plugged into the inner side of the roller adjustment column 601 and are rotatably connected to the roller adjustment column 601 through bearings. One end of the four roller adjustment columns 601 is slidably connected to the first driven roller bracket 106 and the second driven roller bracket 205 through the guide balls 605. The roller adjustment column 601 is slidably adjusted on the inner sides of the first driven roller bracket 106 and the second driven roller bracket 205 through the guide balls 605, so as to ensure the stability of the driven roller adjustment before and after rotation.

[0024] See also Figure 1 A shaped material bag 5 is provided between the conveying belt 105 and the flattening belt 202. The conveying belt 105 rotates counterclockwise, and the conveying belt 105 rotates in opposite directions to the flattening belt 202. A shaped material bag 4 is provided on one side of the shaped material bag 5. The shaped material bag 4 can be smoothly conveyed and shaped into a shaped material bag 5 through the conveying belt 105 and the flattening belt 202.

[0025] In summary, the spacing between the conveyor belt 105 and the flattening belt 202 is adjusted according to the required shaping size of the material bag. Specifically, the transmission mechanism 303 is composed of a worm wheel and a worm, the operating handle 304 is fixedly connected to the worm, and the winding wheel 302 is fixedly connected to the worm wheel. By rotating the operating handle 304, the operating handle 304 drives the winding wheel 302 to rotate on the upper end of the support frame 301 through the meshing connection between the teeth of the worm wheel and the worm, and the winding wheel 302 is connected to the pull rod 305 through a steel cable, so that when the winding wheel 302 winds the steel cable, it can drive the bearing seat to rotate relative to the front support arm 203 through the pull rod 305 and the spring 306; The second housing 201 is rotatably connected to the upper ends of the front arm 203 and the rear arm 204 through the front upper shaft 207 and the rear upper shaft 209 respectively, and the first housing 102 is rotatably connected to the bottom ends of the front arm 203 and the rear arm 204 through the front lower shaft 206 and the rear lower shaft 208 respectively, so that the upper end of the front arm 203 swings relative to the second housing 201, and the bottom end of the front arm 203 swings relative to the first housing 102 through the front lower shaft 206, and then the second housing 201 can drive the flattening belt 202 to adjust the spacing relative to the conveyor belt 105 under the synchronous swinging action of the rear arm 204, so as to realize the shaping of material bags into different sizes and can be suitable for material bags of different specifications. A feeding device will be provided at the front end of the conveyor belt machine 1, and the material bag 4 before shaping will be transported and fed by the feeding device.

[0026] Turn on the power supply, start the first drive motor 103 and the second drive motor 211, so that the first drive motor 103 drives the active roller inside the first active roller support 104 to rotate through the sprocket and the chain under the support of the first active roller support 104, and at the same time, the second drive motor 211 drives the active roller inside the second active roller support 210 to rotate through the sprocket and the chain under the support of the second active roller support 210, so that the conveying belt 105 and the flattening belt 202 are both transmitted through the active roller and the driven roller; The conveying belt 105 rotates in a counterclockwise direction, and the conveying belt 105 rotates in an opposite direction to the flattening belt 202, so that the pre-shaped material bag 4 can be smoothly conveyed from right to left by the conveying belt 105 and the flattening belt 202, and the distance between the conveying belt 105 and the flattening belt 202 is stable, so that when the conveying belt 105 and the flattening belt 202 convey the pre-shaped material bag 4, the excess gas in the pre-shaped material bag 4 can be squeezed and escaped, thereby realizing the transmission and shaping of the pre-shaped material bag 4 into the post-shaped material bag 5.

[0027] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A double-layer shaping belt conveyor, comprising a conveying belt conveyor (1), a flattening belt conveyor (2) and a shaping adjustment component (3), characterized in that: A flattening belt conveyor (2) is installed above the conveyor belt conveyor (1), a shaping adjustment component (3) is installed on the outer side of the conveyor belt conveyor (1), two belt tensioning components (6) are installed at the front ends of the conveyor belt conveyor (1) and the flattening belt conveyor (2), and the conveyor belt conveyor (1) comprises a belt conveyor support frame (101), and a first housing (102) is fixedly installed on the upper end of the belt conveyor support frame (101); The flattening belt conveyor (2) comprises a second housing (201), a flattening belt (202) being movably mounted inside the second housing (201), front ends of both sides of the second housing (201) being rotatably connected to front support arms (203), the upper ends of the front support arms (203) being provided with front upper rotating shafts (207), the lower ends of the front support arms (203) being provided with front lower rotating shafts (206), and rear ends of both sides of the second housing (201) being rotatably connected to rear support arms (204), the upper ends of the rear support arms (204) being provided with front lower rotating shafts (206). A rear upper rotating shaft (209) is provided at the front end of the rear support arm (204), a rear lower rotating shaft (208) is provided at the bottom end of the rear support arm (204), a second driven roller bracket (205) is fixedly mounted at the front end of the second housing (201), a second active roller bracket (210) is fixedly mounted at the rear end of the second housing (201), a second driving motor (211) is fixedly mounted at the upper end of the second active roller bracket (210), and a second sprocket transmission box (212) is fixedly mounted on one side of the second active roller bracket (210).

2. The double-layer shaping belt conveyor according to claim 1, characterized in that: The conveyor belt machine (1) further comprises a conveyor belt (105) movably connected to the first housing (102); a first driven roller bracket (106) is fixedly mounted on the front end of the first housing (102); a first active roller bracket (104) is fixedly mounted on the rear end of the first housing (102); a first sprocket transmission box (107) is fixedly mounted on one side of the first active roller bracket (104); and a first driving motor (103) is mounted on the lower end surface of the first active roller bracket (104).

3. The double-layer shaping belt conveyor according to claim 2 is characterized in that: The shaping adjustment component (3) comprises a supporting frame (301), the upper end of the supporting frame (301) is rotatably connected to a winding wheel (302), an operating handle (304) is installed on one side of the winding wheel (302), a transmission mechanism (303) is installed between the winding wheel (302) and the operating handle (304), steel cables are wound around the outer sides of both ends of the winding wheel (302), two or four pull rods (305) are installed at one end of two of the steel cables, and a spring (306) is provided between two adjacent pull rods (305).

4. The double-layer shaping belt conveyor according to claim 3 is characterized in that: The belt tensioning assembly (6) comprises a roller adjustment column (601), a connecting sleeve (602) is fixedly mounted on the inner side of the middle of the roller adjustment column (601), an adjusting screw (603) is mounted on the inner side of the connecting sleeve (602), a locking cover (604) is fixedly mounted on one end of the roller adjustment column (601), and three guide balls (605) are arranged between the upper and lower ends of the roller adjustment column (601) and the locking cover (604).

5. The double-layer shaping belt conveyor according to claim 4 is characterized in that: A reshaped material bag (5) is provided between the conveying belt (105) and the flattening belt (202); the conveying belt (105) rotates counterclockwise, the conveying belt (105) rotates in opposite directions to the flattening belt (202); and a pre-shaped material bag (4) is provided on one side of the reshaped material bag (5).

6. The double-layer shaping belt conveyor according to claim 5, characterized in that: The first housing (102) is rotatably connected to the bottom end of the front support arm (203) via a front lower rotating shaft (206); the top end of the front support arm (203) is rotatably connected to the second housing (201) via a front upper rotating shaft (207); the bottom end of the rear support arm (204) is rotatably connected to the first housing (102) via a rear lower rotating shaft (208); the top end of the rear support arm (204) is rotatably connected to the second housing (201) via a rear upper rotating shaft (209); a bearing seat is provided at the top end of the front support arm (203); the bearing seat is located above the front upper rotating shaft (207); the front support arm (203) is rotatably connected to the bearing seat, wherein the bottom ends of the two pull rods (305) are fixedly connected to the bearing seat.

7. The double-layer shaping belt conveyor according to claim 6, characterized in that: A driven roller is provided on the inner side of the bottom end of each of the first driven roller bracket (106) and the second driven roller bracket (205); both ends of the driven roller are plugged into the inner side of the roller adjustment column (601) and are rotatably connected to the roller adjustment column (601) via bearings; one end of each of the four roller adjustment columns (601) is slidably connected to the first driven roller bracket (106) and the second driven roller bracket (205) via guide balls (605); each of the four adjusting screws (603) is rotatably connected to the first driven roller bracket (106) and the second driven roller bracket (205); and the adjusting screw (603) passes through the first driven roller bracket (106) and the second driven roller bracket (205) and is threadedly connected to the connecting sleeve (602).

8. The double-layer shaping belt conveyor according to claim 7, characterized in that: Active rollers are provided on the inner sides of the first active roller bracket (104) and the second active roller bracket (210); both ends of the active rollers are rotatably connected to the first active roller bracket (104) and the second active roller bracket (210) via bearings; the front and rear ends of the conveying belt (105) are connected to the first driven roller bracket (106) and the first active roller bracket (104) via driven rollers and active rollers, respectively; and the front and rear ends of the flattening belt (202) are connected to the second driven roller bracket (205) and the second active roller bracket (210) via driven rollers and active rollers, respectively.

9. The double-layer shaping belt conveyor according to claim 8, characterized in that: Two sprockets and a chain are provided on the inner sides of the first sprocket transmission box (107) and the second sprocket transmission box (212); two adjacent sprockets are connected by a chain transmission; the output end of the first drive motor (103) is connected to one of the active rollers on the inner side of the first active roller bracket (104) by a sprocket and a chain transmission; and the output end of the second drive motor (211) is connected to the other active roller on the inner side of the second active roller bracket (210) by a sprocket and a chain transmission.

10. The double-layer shaping belt conveyor according to claim 9, characterized in that: The transmission mechanism (303) is composed of a worm wheel and a worm, the worm wheel is sleeved and fixed on the middle part of the reel (302), the bottom end of the operating handle (304) is fixedly connected to the worm, and the operating handle (304) is rotationally connected to the supporting stand (301).

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