Negative pressure area conveying device for sheet production

Abstract

The invention discloses a negative pressure area conveying device for sheet production, which comprises a negative pressure cavity, a supporting plate and a conveying assembly, the supporting plate is arranged in the negative pressure cavity, the two ends of the supporting plate extend to the two ends of the negative pressure cavity, the conveying assembly is arranged on the negative pressure cavity, an adjusting assembly is further arranged in the negative pressure cavity, the adjusting assembly can press a synchronous belt downwards, and the synchronous belt is driven by the adjusting assembly to rotate. And a tensioning assembly is further arranged on the negative pressure cavity, and the tensioning assembly is used for guaranteeing that the synchronous belt is in a tensioning state all the time in the working process. Under the synergistic effect of the supporting plate, the conveying assembly and the adjusting assembly, the plates can be kept stable all the time when passing through the air flow unstable area, it is ensured that the plates smoothly pass through the negative pressure area, and therefore the production efficiency of the plates is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plate production, and in particular relates to a negative pressure zone conveying device for plate production. Background Art

[0002] In the process of drug production, especially in the production line of solid preparations (such as tablets and capsules), the finished "plates" (usually refers to the tablets pressed by the tablet press) need to pass through a negative pressure zone. The main purpose is to remove dust on the surface of the tablets. When the plates pass through an area with unstable airflow, it is easy to cause the plates to tilt or overturn. In severe cases, the plates may get stuck on the conveying mechanism, affecting the normal production of the plates. Therefore, this application designs a negative pressure zone conveying device for plate production. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a negative pressure zone conveying device for plate production. Under the coordinated action of the support plate, conveying assembly and adjustment assembly, the plate can always remain stable when passing through the unstable airflow area, ensuring that it passes through the negative pressure area smoothly, thereby improving the production efficiency of the plate.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A negative pressure zone conveying device for plate production, comprising a negative pressure chamber, a support plate, and a conveying assembly, wherein the support plate is arranged in the negative pressure chamber, and both ends of the support plate extend to both ends of the negative pressure chamber, and the conveying assembly is arranged on the negative pressure chamber; The conveying assembly includes a conveying motor, a first rotating shaft, a second rotating shaft, a synchronous belt and a belt, wherein the first rotating shaft and the second rotating shaft are symmetrically arranged at both ends of the negative pressure chamber, and the first rotating shaft and the second rotating shaft are both connected to the negative pressure chamber, a first pulley is arranged on the first rotating shaft, and a second pulley is arranged on the second rotating shaft, the synchronous belt passes through the negative pressure chamber and is respectively connected to the first pulley and the second pulley, the synchronous belt is arranged above the support plate, and the synchronous belt cooperates with the support plate, the conveying motor is arranged at the bottom of the negative pressure chamber, and the conveying motor drives the first rotating shaft to rotate through the belt; An adjustment component is also provided in the negative pressure chamber, which can press the synchronous belt downward, thereby adjusting the distance between the synchronous belt and the support plate. A tensioning component is also provided on the negative pressure chamber, which is used to ensure that the synchronous belt is always in a tensioned state during operation.

[0005] Preferably, a groove is provided on the top of the support plate to facilitate the passage of the plate and to limit the position of the plate. The synchronous belt is located above the groove. The setting of the groove facilitates the limiting of the plate and can ensure the safety and stability of the plate during transportation.

[0006] Preferably, the conveying assembly also includes a first support rod and a second support rod, the first support rod and the second support rod are respectively arranged at the two ends of the negative pressure chamber, the first support rod is symmetrically arranged at the two ends of the first rotating shaft, the first support rod is fixedly installed on the negative pressure chamber, and the first rotating shaft is rotatably installed on the first support rod, the second support rod is symmetrically arranged at the two ends of the second rotating shaft, and the second support rod is fixedly installed on the negative pressure chamber, the second support rod is connected to the second rotating shaft, and the arrangement of the first support rod and the second support rod facilitates the support of the synchronous belt to ensure the normal operation of the synchronous belt.

[0007] Preferably, the tensioning assembly includes a pushing frame, a vertical rod, a guide rod and a first spring. The vertical rod is arranged at the bottom of the negative pressure chamber, and a strip hole is opened in the middle of the vertical rod. The two ends of the guide rod are respectively fixedly mounted on the two inner walls of the strip hole. A sliding block is provided in the strip hole, and the sliding block is slidably mounted on the guide rod. The first spring is sleeved on the guide rod. The pushing frame is rotatably mounted on the second rotating shaft, and the pushing frame is rotatably connected to the sliding block. The setting of the tensioning assembly is used to ensure that the synchronous belt is always in a tensioned state. The first spring is used to provide power for the pushing frame to drive the second rotating shaft to reset, thereby ensuring that the synchronous belt is always in a tensioned state during operation.

[0008] Preferably, an adjustment hole is opened on the second support rod, and the second rotating shaft slides with the adjustment hole. The setting of the adjustment hole facilitates the normal sliding of the second rotating shaft, ensuring that the adjustment component can normally adjust the distance between the synchronous belt and the support plate, and ensuring that the synchronous belt can transport plates of different thicknesses.

[0009] Preferably, sliding grooves are provided on both sides of the sliding block, and the sliding grooves are in sliding engagement with the side walls of the strip-shaped hole. The provision of the sliding grooves can ensure that the sliding block slides normally along the strip-shaped hole.

[0010] Preferably, the pushing frame includes a rotating shaft and rotating arms arranged at both ends of the rotating shaft. The rotating shaft is rotatably mounted on the sliding block, one end of the rotating arm is fixedly mounted on the rotating shaft, and the other end of the rotating arm is rotatably mounted on the second rotating shaft. The setting of the pushing frame ensures that the second rotating shaft can slide normally along the adjusting hole, prevents the second rotating shaft from tilting during the sliding process, and ensures the normal operation of the second rotating shaft.

[0011] Preferably, the adjusting assembly includes a first rotating rod, a second rotating rod, a push-pull rod, a pushing block, a support frame and a lower pressure frame, the support frame is arranged at the top of the lower pressure frame, the first rotating rod, the second rotating rod, the push-pull rod and the pushing block are symmetrically arranged on both sides of the support frame, the two ends of the first rotating rod are respectively rotatably connected to the support frame and the second rotating rod, and the other end of the second rotating rod is rotatably installed on the negative pressure chamber, the pushing block is slidably arranged on the support frame, and the two ends of the push-pull rod are respectively rotatably connected to the middle of the first rotating rod and the pushing block. The setting of the adjusting assembly can adjust the distance between the synchronous belt and the groove on the support plate, ensuring that under the coordinated action of the synchronous belt and the support plate, plates of different thicknesses can be transported, thereby greatly improving the production efficiency of the plates.

[0012] Preferably, the support frame includes a second spring, a fixing rod and fixing plates installed at both ends of the fixing rod, the fixing plate is fixedly installed on the lower pressure frame, the second spring is sleeved on the fixing rod, and the second spring is located between the pushing blocks symmetrically arranged on both sides of the center line of the support frame. The setting of the support frame can support the first rotating rod and the pushing block, ensuring that the pushing block can move normally along the fixed rod under the action of the second spring, and the pushing block will push the first rotating rod to rotate around the hinge of the first rotating rod and the fixed plate when the pushing block moves along the fixed rod, thereby achieving the purpose of pressing the lower pressure frame downward, and the downward movement of the lower pressure frame can press the synchronous belt downward, ensuring that the synchronous belt can drive the plate to move normally along the support plate.

[0013] Preferably, the lower pressure frame includes a lower pressure plate, a guide roller and a side plate, the fixed plate is fixedly installed on the lower pressure plate, the side plates are arranged at the ends of the lower pressure plate, the side plates are symmetrically arranged on both sides of the center line of the lower pressure plate, and the side plates are used to limit the synchronous belt, the two ends of the guide roller are rotatably mounted on the side plates, a fixed groove is opened at the bottom of the push block, and the fixed groove is slidably matched with the lower pressure plate, the setting of the lower pressure frame can press the synchronous belt downward, ensure that the synchronous belt and the support plate cooperate to drive the plate to pass through the area with unstable wind flow, thereby improving the production efficiency of the plate.

[0014] The beneficial effects of the present invention are: 1) With the coordinated action of the support plate, conveying assembly and adjustment assembly, the plate can always remain stable when passing through the unstable airflow area, ensuring that it passes through the negative pressure area smoothly, thereby improving the production efficiency of the plate.

[0015] 2) The grooves of this device are designed to facilitate positioning of the plates and ensure the safety and stability of the plates during transportation.

[0016] 3) The arrangement of the first support rod and the second support rod of the device facilitates the support of the synchronous belt and ensures the normal operation of the synchronous belt.

[0017] 4) The setting of the tensioning assembly of this device is used to ensure that the synchronous belt is always in a tensioned state. The first spring is used to provide power for the push frame to drive the second rotating shaft to reset, ensuring that the synchronous belt is always in a tensioned state during operation.

[0018] 5) The setting of the adjustment hole of this device facilitates the normal sliding of the second rotating shaft, ensures that the adjustment component can normally adjust the distance between the synchronous belt and the support plate, and ensures that the synchronous belt can transport plates of different thicknesses.

[0019] 6) This device has sliding grooves on both sides of the sliding block, and the sliding grooves are slidably matched with the side walls of the strip hole. The setting of the sliding grooves can ensure that the sliding block slides normally along the strip hole.

[0020] 7) The setting of the pushing frame of this device can ensure that the second rotating shaft can slide normally along the adjustment hole, prevent the second rotating shaft from tilting during the sliding process, and ensure the normal operation of the second rotating shaft.

[0021] 8) The setting of the adjustment component of this device can adjust the distance between the synchronous belt and the groove on the pallet, ensuring that the synchronous belt and the pallet work together to transport plates of different thicknesses, greatly improving the production efficiency of the plates.

[0022] 9) The support frame of the device is provided to support the first rotating rod and the pushing block, ensuring that the pushing block can move normally along the fixed rod under the action of the second spring. When the pushing block moves along the fixed rod, it will push the first rotating rod to rotate around the hinge between the first rotating rod and the fixed plate, thereby achieving the purpose of pressing the lower pressure frame downward. The downward movement of the lower pressure frame can press down the synchronous belt, ensuring that the synchronous belt can drive the plate to move normally along the support plate.

[0023] 10) The setting of the lower pressure frame of this device can press the synchronous belt downward, ensuring that the synchronous belt and the support plate cooperate to drive the plate to pass through the area with unstable air flow, thereby improving the production efficiency of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attachment Figure 1 It is a structural schematic diagram of the present invention.

[0025] Attachment Figure 2 It is a schematic diagram of the installation structure of the support plate in the present invention.

[0026] Attachment Figure 3 It is a structural schematic diagram of the regulating component in the present invention.

[0027] Attachment Figure 4 It is a structural diagram of the output component in the present invention.

[0028] Attachment Figure 5 It is a schematic diagram of the installation structure of the tensioning assembly in the present invention.

[0029] Attachment Figure 6 It is a structural schematic diagram of the tensioning assembly in the present invention.

[0030] Attachment Figure 7 It is a structural schematic diagram of the sliding block in the present invention.

[0031] Attachment Figure 8 This invention Figure 6 Enlarged view of point A in the middle.

[0032] Attachment Figure 9 It is a structural schematic diagram of the regulating component in the present invention.

[0033] Attachment Figure 10 It is a structural schematic diagram of the support frame in the present invention.

[0034] Attachment Figure 11 It is a schematic diagram of the installation structure of the lower pressure frame in the present invention.

[0035] In the picture: 1. Negative pressure chamber; 2. Tensioning assembly; 201. Pushing frame; 202. Sliding block; 203. Connecting rod; 204. Vertical rod; 205. Strip hole; 206. Guide rod; 207. First spring; 208. Slide slot; 209, rotating shaft; 2010, rotating arm; 3. Conveying assembly; 301. Conveying motor; 302. Belt; 303. First rotating shaft; 304. First pulley; 305. First support rod; 306. Synchronous belt; 307. Second rotating shaft; 308. Second pulley; 309. Second support rod; 3010. Adjustment hole; 4. Support leg; 5. Support plate; 501. Groove; 6. Adjustment assembly; 601. Second rotating rod; 602. First rotating rod; 603. Push-pull rod; 604. Push block; 605. Support frame; 606. Lower pressure frame; 607. Fixing slot; 608, second spring; 609, fixing rod; 6010, fixing plate; 6011, lower pressure plate; 6012, guide roller; 6013, side plate. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, with reference to the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] like Figure 1 As shown, a negative pressure zone conveying device for plate production includes a negative pressure chamber 1, a support plate 5 and a conveying component 3. The support plate 5 is arranged in the negative pressure chamber 1, and both ends of the support plate 5 extend to the two ends of the negative pressure chamber 1. The support plate 5 is used to support the plates to be conveyed to ensure the safety and stability of the plates during the conveying process. The conveying component 3 is arranged on the negative pressure chamber 1, and an adjustment component 6 is also provided in the negative pressure chamber 1. The adjustment component 6 can press the synchronous belt 306 downward, so as to adjust the distance between the synchronous belt 306 and the support plate 5. A tensioning component 2 is also provided on the negative pressure chamber 1. The tensioning component 2 is used to ensure that the synchronous belt 306 is always in a tensioned state during operation.

[0039] In this embodiment, Figure 1 As shown, support legs 4 are provided at the four corners of the bottom of the negative pressure chamber 1 , and the provision of the support legs 4 can ensure the normal operation of the device.

[0040] In this embodiment, Figure 4 As shown, the conveying assembly 3 includes a conveying motor 301, a first rotating shaft 303, a second rotating shaft 307, a synchronous belt 306 and a belt 302. The first rotating shaft 303 and the second rotating shaft 307 are symmetrically arranged at both ends of the negative pressure chamber 1, and the first rotating shaft 303 and the second rotating shaft 307 are both connected to the negative pressure chamber 1. A first pulley 304 is arranged on the first rotating shaft 303, and a second pulley 308 is arranged on the second rotating shaft 307. The synchronous belt 306 runs through the negative pressure chamber 1 and is respectively connected to the first pulley 304 and the second pulley 308. The synchronous belt 306 is arranged above the pallet 5, and the synchronous belt 306 cooperates with the pallet 5. The synchronous belt 306 can press the plate onto the pallet 5, thereby conveying the plate on the pallet 5 out of the negative pressure area, thereby improving the production efficiency of the plate.

[0041] In this embodiment, Figure 2 As shown, the conveying motor 301 is arranged at the bottom of the negative pressure chamber 1 to ensure the normal operation of the conveying motor 301 and to reasonably use the space. The conveying motor 301 drives the first rotating shaft 303 to rotate through the belt 302.

[0042] The conveying motor 301 drives the first rotating shaft 303 to rotate through the belt 302, and the rotation of the first rotating shaft 303 drives the first pulley 304 to rotate. The first pulley 304 drives the second pulley 308 to rotate through the synchronous belt 306, and the rotation of the second pulley 308 drives the second rotating shaft 307 to rotate. The setting of the second rotating shaft 307 and the first rotating shaft 303 can ensure the normal operation of the synchronous belt 306.

[0043] In this embodiment, Figure 2 As shown, a groove 501 is provided on the top of the pallet 5 to facilitate the passage of the plate and to limit the position of the plate. The synchronous belt 306 is located above the groove 501. The setting of the groove 501 facilitates the limiting of the plate and can ensure the safety and stability of the plate during the transportation process.

[0044] In this embodiment, the bottom of the groove 501 adopts a smooth plane. The smooth surface can reduce the friction between the plate and the groove 501, ensuring that the plate can be normally transported out of the negative pressure area, thereby improving the production efficiency of the plate.

[0045] In this embodiment, Figure 4 As shown, the conveying assembly 3 also includes a first support rod 305 and a second support rod 309. The first support rod 305 and the second support rod 309 are respectively arranged at the two ends of the negative pressure chamber 1. The first support rod 305 is symmetrically arranged at both ends of the first rotating shaft 303. The first support rod 305 is fixedly installed on the negative pressure chamber 1, and the first rotating shaft 303 is rotatably installed on the first support rod 305. The second support rod 309 is symmetrically arranged at both ends of the second rotating shaft 307, and the second support rod 309 is fixedly installed on the negative pressure chamber 1. The second support rod 309 is connected to the second rotating shaft 307. The arrangement of the first support rod 305 and the second support rod 309 facilitates the support of the synchronous belt 306 to ensure the normal operation of the synchronous belt 306.

[0046] In this embodiment, Figure 5 、 Figure 6 As shown, the tensioning assembly 2 includes a pushing frame 201, a vertical rod 204, a guide rod 206 and a first spring 207. The vertical rod 204 is arranged at the bottom of the negative pressure chamber 1, and a strip hole 205 is opened in the middle of the vertical rod 204. The two ends of the guide rod 206 are respectively fixedly mounted on the two inner walls of the strip hole 205. A sliding block 202 is provided in the strip hole 205. The sliding block is slidably mounted on the guide rod 206. The first spring 207 is sleeved on the guide rod 206. The pushing frame 201 is rotatably mounted on the second rotating shaft 307, and the pushing frame 201 is rotatably connected to the sliding block 202. The setting of the tensioning assembly 2 is used to ensure that the synchronous belt 306 is always in a tensioned state. The first spring 207 is used to provide power for the pushing frame 201 to drive the second rotating shaft 307 to reset, thereby ensuring that the synchronous belt 306 is always in a tensioned state during operation.

[0047] In this embodiment, Figure 5 As shown, the connecting rod 203 is arranged on both sides of the bottom of the vertical pole 204, and the two ends of the connecting rod 203 are respectively connected to the supporting legs 4 and the vertical pole 204. The arrangement of the connecting rod 203 can ensure that the vertical pole 204 is always in a stable state.

[0048] In this embodiment, Figure 4 As shown, an adjustment hole 3010 is opened on the second support rod 309, and the second rotating shaft 307 slides with the adjustment hole 3010. The setting of the adjustment hole 3010 facilitates the normal sliding of the second rotating shaft 307, ensuring that the adjustment component 6 can normally adjust the distance between the synchronous belt 306 and the support plate 5, and ensuring that the synchronous belt 306 can transport plates of different thicknesses.

[0049] In this embodiment, Figure 7 As shown, sliding grooves 208 are provided on both sides of the sliding block 202 , and the sliding grooves 208 are slidably engaged with the side walls of the strip hole 205 . The arrangement of the sliding grooves 208 can ensure that the sliding block 202 can slide normally along the strip hole 205 .

[0050] In this embodiment, Figure 8 As shown, the pushing frame 201 includes a rotating shaft 209 and a rotating arm 2010 arranged at both ends of the rotating shaft 209. The rotating shaft 209 is rotatably installed on the sliding block 202. One end of the rotating arm 2010 is fixedly installed on the rotating shaft 209, and the other end of the rotating arm 2010 is rotatably installed on the second rotating shaft 307. The setting of the pushing frame 201 can simultaneously drive the second rotating shaft 307 to ensure that the second rotating shaft 307 can slide normally along the adjustment hole 3010, prevent the second rotating shaft 307 from tilting during the sliding process, and ensure the normal operation of the second rotating shaft 307.

[0051] In this embodiment, Figure 3 、 Figure 9As shown, the adjusting assembly 6 includes a first rotating rod 602, a second rotating rod 601, a push-pull rod 603, a pushing block 604, a support frame 605 and a lower pressure frame 606. The support frame 605 is arranged at the top of the lower pressure frame 606, and the first rotating rod 602, the second rotating rod 601, the push-pull rod 603 and the pushing block 604 are symmetrically arranged on both sides of the support frame 605. The two ends of the first rotating rod 602 are rotatably connected to the support frame 605 and the second rotating rod 601 respectively, and the other end of the second rotating rod 601 is rotatably installed on the negative pressure chamber 1. The pushing block 604 is slidably arranged on the support frame 605, and the two ends of the push-pull rod 603 are rotatably connected to the middle part of the first rotating rod 602 and the pushing block 604 respectively. The setting of the adjusting assembly 6 can adjust the distance between the synchronous belt 306 and the groove 501 on the support plate 5, ensuring that under the coordinated action of the synchronous belt 306 and the support plate 5, plates of different thicknesses can be transported, thereby greatly improving the production efficiency of the plates.

[0052] In this embodiment, Figure 10 As shown, the support frame 605 includes a second spring 608, a fixed rod 609 and fixed plates 6010 installed at both ends of the fixed rod 609, the fixed plate 6010 is fixedly installed on the lower pressure frame 606, the second spring 608 is sleeved on the fixed rod 609, and the second spring 608 is located between the pushing blocks 604 symmetrically arranged on both sides of the center line of the support frame 605.

[0053] The second spring 608 is set to push the pushing block 604 to move outward. The outward movement of the pushing block 604 will push one end of the push-pull rod 603 to follow the movement of the pushing block 604. The other end of the push-pull rod 603 will push the first rotating rod 602 to rotate around the hinge between the first rotating rod 602 and the fixed plate 6010. The rotation of the first rotating rod 602 will drive the second rotating rod 601 to rotate. The rotation of the second rotating rod 601 and the first rotating rod 602 will drive the lower pressure frame 606 to move downward. The downward movement of the lower pressure frame 606 will drive the synchronous belt 306 to move downward, thereby achieving the purpose of adjusting the distance between the support plate 5 and the synchronous belt 306.

[0054] The setting of the support frame 605 can support the first rotating rod 602 and the pushing block 604, ensuring that the pushing block 604 can move normally along the fixed rod 609 under the action of the second spring 608, thereby achieving the purpose of pushing the first rotating rod 602 and the second rotating rod 601 to rotate, ensuring that the lower pressure frame 606 can press down the synchronous belt 306, and ensuring that the synchronous belt 306 can drive the plate to move normally along the support plate 5.

[0055] In this embodiment, Figure 11As shown, the lower pressure frame 606 includes a lower pressure plate 6011 and a side plate 6013. The fixed plate 6010 is fixedly installed on the lower pressure plate 6011. The side plate 6013 is arranged at the end of the lower pressure plate 6011. The side plates 6013 are symmetrically arranged on both sides of the center line of the lower pressure plate 6011, and the side plates 6013 are used to limit the synchronous belt 306. The setting of the lower pressure frame 606 can press the synchronous belt 306 downward to ensure that the synchronous belt 306 cooperates with the support plate 5 to drive the plate to pass through the area with unstable wind flow, thereby improving the production efficiency of the plate.

[0056] In this embodiment, Figure 11 As shown, a guide roller 6012 is also provided, and both ends of the guide roller 6012 are rotatably mounted on the side plate 6013 . The provision of the guide roller 6012 can reduce the friction between the synchronous belt 306 and the lower pressure plate 6011 .

[0057] In this embodiment, Figure 10 As shown, a fixing groove 607 is provided at the bottom of the pushing block 604 , and the fixing groove 607 is slidably matched with the lower pressing plate 6011 . The setting of the fixing groove 607 can prevent the pushing block 604 from shaking during the movement, thereby ensuring the normal operation of the pushing block 604 .

[0058] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the present invention, they should all fall within the scope of protection of the present invention.

Claims

1. A negative pressure zone conveying device for sheet production, comprising a negative pressure chamber, a support plate and a conveying assembly, characterized in that: The support plate is arranged in the negative pressure cavity, and both ends of the support plate extend to both ends of the negative pressure cavity, and the conveying assembly is arranged on the negative pressure cavity; The conveying assembly includes a conveying motor, a first rotating shaft, a second rotating shaft, a synchronous belt and a belt, wherein the first rotating shaft and the second rotating shaft are symmetrically arranged at both ends of the negative pressure chamber, and the first rotating shaft and the second rotating shaft are both connected to the negative pressure chamber, a first pulley is arranged on the first rotating shaft, and a second pulley is arranged on the second rotating shaft, the synchronous belt passes through the negative pressure chamber and is respectively connected to the first pulley and the second pulley, the synchronous belt is arranged above the support plate, and the synchronous belt cooperates with the support plate, the conveying motor is arranged at the bottom of the negative pressure chamber, and the conveying motor drives the first rotating shaft to rotate through the belt; An adjustment component is also provided in the negative pressure chamber, which can press the synchronous belt downward, thereby adjusting the distance between the synchronous belt and the support plate. A tensioning component is also provided on the negative pressure chamber, which is used to ensure that the synchronous belt is always in a tensioned state during operation.

2. A negative pressure zone conveying device for sheet production according to claim 1, characterized in that: A groove is provided on the top of the support plate to facilitate the passage of the plate and to limit the position of the plate, and the synchronous belt is located above the groove.

3. The negative pressure zone conveying device for plate production according to claim 1, characterized in that: The conveying assembly also includes a first support rod and a second support rod, which are respectively arranged at the two ends of the negative pressure chamber, the first support rod is symmetrically arranged at the two ends of the first rotating shaft, the first support rod is fixedly installed on the negative pressure chamber, and the first rotating shaft is rotatably installed on the first support rod, the second support rod is symmetrically arranged at the two ends of the second rotating shaft, and the second support rod is fixedly installed on the negative pressure chamber, and the second support rod is connected to the second rotating shaft.

4. A negative pressure zone conveying device for plate production according to claim 3, characterized in that: The tensioning assembly includes a pushing frame, a vertical rod, a guide rod and a first spring. The vertical rod is arranged at the bottom of the negative pressure chamber. A strip hole is opened in the middle of the vertical rod. The two ends of the guide rod are respectively fixedly mounted on the two inner walls of the strip hole. A sliding block is provided in the strip hole. The sliding block is slidably mounted on the guide rod. The first spring is sleeved on the guide rod. The pushing frame is rotatably mounted on the second rotating shaft, and the pushing frame is rotatably connected to the sliding block.

5. The negative pressure zone conveying device for plate production according to claim 4, characterized in that: An adjustment hole is provided on the second support rod, and the second rotating shaft is slidably matched with the adjustment hole.

6. The negative pressure zone conveying device for plate production according to claim 4, characterized in that: Slide grooves are provided on both sides of the sliding block, and the slide grooves are slidably matched with the side walls of the strip-shaped hole.

7. The negative pressure zone conveying device for plate production according to claim 4, characterized in that: The pushing frame includes a rotating shaft and rotating arms arranged at both ends of the rotating shaft. The rotating shaft is rotatably mounted on the sliding block. One end of the rotating arm is fixedly mounted on the rotating shaft, and the other end of the rotating arm is rotatably mounted on the second rotating shaft.

8. The negative pressure zone conveying device for plate production according to claim 1, characterized in that: The adjusting assembly includes a first rotating rod, a second rotating rod, a push-pull rod, a pushing block, a support frame and a lower pressure frame. The support frame is arranged on the top of the lower pressure frame, and the first rotating rod, the second rotating rod, the push-pull rod and the pushing block are symmetrically arranged on both sides of the support frame. The two ends of the first rotating rod are respectively rotatably connected to the support frame and the second rotating rod, and the other end of the second rotating rod is rotatably installed on the negative pressure chamber. The pushing block is slidably arranged on the support frame, and the two ends of the push-pull rod are respectively rotatably connected to the middle part of the first rotating rod and the pushing block.

9. The negative pressure zone conveying device for plate production according to claim 8, characterized in that: The support frame includes a second spring, a fixed rod and fixed plates installed at both ends of the fixed rod. The fixed plates are fixedly installed on the lower pressure frame. The second spring is sleeved on the fixed rod, and the second spring is located between the pushing blocks symmetrically arranged on both sides of the center line of the support frame.

10. The negative pressure zone conveying device for plate production according to claim 8, characterized in that: The lower pressure frame includes a lower pressure plate, a guide roller and a side plate. The fixed plate is fixedly installed on the lower pressure plate. The side plates are arranged at the ends of the lower pressure plate. The side plates are symmetrically arranged on both sides of the center line of the lower pressure plate, and the side plates are used to limit the synchronous belt. The two ends of the guide roller are rotatably installed on the side plates. A fixed groove is opened at the bottom of the pushing block, and the fixed groove is slidably matched with the lower pressure plate.

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