Conveying connecting assembly and punching machine

By using a segmented transmission rod and connecting parts design, the problem of needing to disassemble the frame to replace the conveyor belt in traditional transmission connection components is solved, which simplifies replacement, improves maintenance efficiency, and extends the service life of the punching machine.

CN224255494UActive Publication Date: 2026-05-19DELTON TECH (GUANGZHOU) INC
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DELTON TECH (GUANGZHOU) INC
Filing Date
2025-04-29
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

The design of the conveyor connection components of the traditional inner PE punching machine's material rack requires disassembling the frame when replacing the conveyor belt, which is cumbersome to maintain, affects operating efficiency, increases wear, and reduces the service life of the punching machine.

Method used

The transmission rod adopts a segmented design, and the conveyor belt can be replaced through movable connectors. The transmission rod is divided into first and second transmission sections, and hollow protective tubes and connecting sections are used at the connection to ensure stable connection and simplify the disassembly process.

Benefits of technology

It simplifies the conveyor belt replacement process, improves maintenance efficiency, reduces collisions and wear between the frame and the conveyor connection components, and extends the service life of the punching machine.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224255494U_ABST
    Figure CN224255494U_ABST
Patent Text Reader

Abstract

The utility model provides a conveying connecting assembly and a punching machine, and belongs to the technical field of conveying structures.The conveying connecting assembly comprises a transmission rod, the transmission rod comprises a first transmission section and a second transmission section, and the ends, close to each other, of the first transmission section and the second transmission section are detachably connected; a movable connecting piece is arranged on the transmission rod, and when the connecting piece is located on the first transmission section or the second transmission section, the first transmission section and the second transmission section are detachable; the punching machine is provided with the conveying connecting assembly. The sectional type transmission rod is adopted, when the conveyor belt is replaced, only the connecting piece needs to be pulled away from the connecting position of the first transmission section and the second transmission section, the first transmission section and the second transmission section are separated, then the conveyor belt wheel is taken down from the separation gap of the first transmission section and the second transmission section and replaced, and the replacement process of the conveyor belt can be achieved. The whole conveying connecting assembly does not need to be detached from the rack, and the maintenance efficiency is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of conveying structure technology, and in particular to a conveying connection component and a punching machine. Background Technology

[0002] In the field of printed circuit board manufacturing, traditional inner-layer PE (polyethylene) punching machine racks typically adopt an I-beam structure. This structure includes left and right frames and a central conveyor. The conveyor belt in the conveyor is mounted on a conveyor connection assembly, but the two ends of the conveyor connection assembly are fixed to the left and right frames. When the conveyor belt needs to be replaced, the left and right frames must be disassembled, the three conveyor pulleys on the conveyor connection assembly must be loosened, the conveyor pulleys must be removed from the conveyor connection assembly, and the old conveyor belt must be replaced with a new one. The entire replacement process is cumbersome, resulting in a large workload for maintenance and a long repair time, which seriously affects the overall operating efficiency and maintenance flexibility of the punching machine. On the other hand, frequent disassembly and reassembly can also lead to increased wear due to increased collisions between the frame and the conveyor connection assembly, thereby reducing the service life of the punching machine. Utility Model Content

[0003] To overcome the problems existing in related technologies, one of the objectives of this utility model is to provide a conveyor connection assembly. This assembly, through the segmented design of the transmission rod, allows for conveyor belt replacement by simply pulling the connector away from the connection between the first and second transmission sections, thus separating the first and second transmission sections. Then, the conveyor belt pulley can be removed from the gap between the first and second transmission sections, thereby completing the conveyor belt replacement process without disassembling the frame or removing the entire conveyor connection assembly from the frame. This simplifies the work process and improves maintenance efficiency and flexibility.

[0004] A transmission connection assembly includes a transmission rod, the transmission rod including a first transmission segment and a second transmission segment, wherein the ends of the first transmission segment and the second transmission segment that are close to each other are detachably connected.

[0005] The transmission rod is provided with a movable connecting member. When the connecting member is located at the connection between the first transmission segment and the second transmission segment, the first transmission segment and the second transmission segment are connected. When the connecting member is located at either the first transmission segment or the second transmission segment, the first transmission segment and the second transmission segment are detachable.

[0006] In existing technologies, the transmission rods used in the middle of the conveyor connection assembly of the inner PE punching machine's material rack are usually designed as a single piece. When replacing the conveyor belt, the frame must be disassembled along with it. In this application, the transmission rod is set in segments, with the two segments connected by a connector. When replacing the conveyor belt, it is only necessary to pull the connector away from the connection between the first and second transmission segments, so that the first and second transmission segments are separated. Then, the conveyor belt pulley can be removed from the gap between the first and second transmission segments to complete the conveyor belt replacement process. It is not necessary to disassemble the frame or remove the entire transmission connection assembly from the frame. This simplifies the work process, improves maintenance efficiency and flexibility, reduces maintenance time, and reduces mutual collision and wear between the frame and the transmission connection assembly, which helps to extend the service life of the punching machine.

[0007] In a preferred embodiment of this utility model, the connecting member includes a hollow protective tube, the inner diameter of which matches the diameter of the transmission rod;

[0008] One end of the hollow protective tube is sleeved on the end of the first transmission section near the second transmission section, and the other end of the hollow protective tube is sleeved on the end of the second transmission section near the first transmission section.

[0009] By using a hollow protective tube that matches the diameter of the drive rod, the two drive sections are tightly and stably connected together. The hollow protective tube ensures a stable engagement between the two drive sections, and the movable hollow protective tube can be removed or moved to a certain drive section at any time, making it convenient to disconnect the two drive sections to replace the conveyor belt.

[0010] In a preferred embodiment of this invention, the transmission rod further includes a connecting section disposed between the first transmission segment and the second transmission segment, wherein the first transmission segment and the second transmission segment are connected through the connecting section, and the connecting section is matched with the first transmission segment and the second transmission segment.

[0011] Setting a matching connecting section between the two transmission sections ensures precise alignment at the connection point, which helps reduce transmission errors and wear caused by poor connection, while also improving the coaxiality and concentricity of the transmission rod.

[0012] In a preferred embodiment of this utility model, the first transmission segment and the second transmission segment are each provided with a groove at one end close to each other, and both ends of the connecting segment are provided with a boss that matches the groove.

[0013] The first transmission segment and the connecting segment, as well as the second transmission segment and the connecting segment, are all connected by the groove and the boss.

[0014] The design of grooves and bosses can improve connection strength, ensure alignment, and simplify the assembly process, bringing advantages to the use of transmission rods.

[0015] In a preferred embodiment of this invention, the connector has multiple through holes, and the connector is fixed to the transmission rod through the through holes and fasteners.

[0016] The load is distributed through multiple fastening points, extending the service life of the components. At the same time, multiple through holes provide flexible assembly and maintenance options, simplifying the installation process and improving the ease of maintenance.

[0017] In a preferred embodiment of this invention, the outer surfaces of the first transmission segment and the second transmission segment are symmetrically provided with two planes along the length direction, and at least two of the fasteners pass through the through hole and abut against the planes perpendicularly.

[0018] The outer surface of the transmission rod is mostly curved. Two planes are set on the outer surface of the two transmission sections, and at least two fasteners are ensured to abut on the planes, which enhances the stability of the connector when it is fixed to the transmission rod.

[0019] In a preferred embodiment of this invention, the groove is a U-shaped through groove, and the boss is a U-shaped boss.

[0020] The U-shaped structure provides a larger contact area, thereby enhancing the stability and load-bearing capacity of the connection. It also helps to distribute and transfer the load, reduce stress concentration, and extend the service life of the transmission rod.

[0021] In a preferred embodiment of this invention, the hollow protective tube is a hollow cylinder.

[0022] The hollow cylindrical structure provides comprehensive external protection for the transmission rod connection, reducing the risk of damage caused by collision, wear, or corrosion.

[0023] The second objective of this utility model is to provide a punching machine equipped with the aforementioned conveying connection assembly, including a frame with two side plates, the conveying connection assembly being disposed between the two side plates, a conveyor belt pulley for mounting a conveyor belt being sleeved on the transmission rod, and the ends of the first transmission section and the second transmission section being respectively fixed to the inner sides of the two side plates.

[0024] Compared to traditional conveyor connection assemblies, this design allows for conveyor belt replacement without disassembling the entire frame, simplifying the maintenance process, reducing collisions between the frame and conveyor connection assemblies caused by frequent disassembly and reassembly, helping to reduce wear and extend the service life of the punching machine.

[0025] In a preferred embodiment of this utility model, multiple conveyor belt pulleys are provided, and one conveyor belt pulley is sleeved on each of the first transmission section and the second transmission section. Some of the conveyor belt pulleys are installed on the inner side of the two side plates at the end away from the transmission rod.

[0026] Two conveyor belt wheels located on the same side of the frame are fitted together to install a single conveyor belt.

[0027] Since some conveyor belt pulleys are independently installed inside the side plate, only one conveyor belt pulley is installed in the conveyor connection assembly for the same conveyor belt. Therefore, when replacing the conveyor belt, simply pull the connector away from the connection of the conveyor belt and remove the conveyor belt pulley that needs to be replaced for replacement.

[0028] The beneficial effects of this utility model are as follows:

[0029] This utility model provides a conveyor connection assembly. By designing the transmission rod as a segmented type, the two segments are movably connected by a connector. When changing the conveyor belt, simply pull the connector away from the connection between the first and second transmission segments, separating them. Then, remove the conveyor belt pulley from the gap between the first and second transmission segments to complete the conveyor belt replacement process. This eliminates the need to disassemble the frame or remove the entire conveyor connection assembly from the frame, simplifying the work process, improving maintenance efficiency and flexibility, reducing maintenance time, and minimizing collisions and wear between the frame and the conveyor connection assembly, thus extending the service life of the punching machine. Furthermore, a matching connecting segment is provided between the two transmission segments to ensure precise alignment at the connection point, helping to reduce transmission errors and wear caused by poor connection, while also improving the coaxiality and concentricity of the transmission rods.

[0030] This utility model provides a punching machine that uses segmented transmission rods and connectors to replace the traditional integrated transmission connection components. This solution allows for the replacement of the conveyor belt without disassembling the entire frame, simplifying the maintenance process, reducing collisions between the frame and the transmission connection components caused by frequent disassembly and reassembly, helping to reduce wear and extend the service life of the punching machine. Attached Figure Description

[0031] Figure 1 This is an exploded view of a transmission connection component according to an embodiment of the present invention;

[0032] Figure 2 This is a top view of a punching machine according to an embodiment of the present invention.

[0033] Figure label:

[0034] 1. First transmission section; 2. Second transmission section; 3. Connecting component; 4. Connecting section; 5. Groove; 6. Boss; 7. Through hole; 8. Plane; 9. Side plate; 10. Conveyor pulley; 11. Conveyor belt. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0036] In the field of printed circuit board manufacturing, traditional inner-layer PE (polyethylene) punching machine racks typically adopt an I-beam structure. This structure includes left and right frames and a central conveyor. The conveyor belt in the conveyor is mounted on a conveyor connection assembly, but the two ends of the conveyor connection assembly are fixed to the left and right frames. When the conveyor belt needs to be replaced, the left and right frames must be disassembled, the three conveyor pulleys on the conveyor connection assembly must be loosened, the conveyor pulleys must be removed from the conveyor connection assembly, and the old conveyor belt must be replaced with a new one. The entire replacement process is cumbersome, resulting in a large workload for maintenance and a long repair time, which seriously affects the overall operating efficiency and maintenance flexibility of the punching machine. On the other hand, frequent disassembly and reassembly can also lead to increased wear due to increased collisions between the frame and the conveyor connection assembly, thereby reducing the service life of the punching machine.

[0037] Based on this, this application provides a transmission connection component and a punching machine.

[0038] Example 1

[0039] See Figures 1-2 This embodiment provides a conveying connection assembly, including a transmission rod for transmitting power so that the conveyor pulley 10 mounted on the transmission rod can rotate. The transmission rod includes a first transmission section 1 and a second transmission section 2. The two transmission sections can be independently mounted with the conveyor pulley 10. The ends of the first transmission section 1 and the second transmission section 2 that are close to each other can be detachably connected.

[0040] A movable hollow protective tube is fitted on the transmission rod. The hollow protective tube is used to fix and protect the connection between the first transmission section 1 and the second transmission section 2. When the hollow protective tube is located at the connection between the first transmission section 1 and the second transmission section 2, the first transmission section 1 and the second transmission section 2 are connected. When the hollow protective tube is located on the first transmission section 1 or the second transmission section 2, the first transmission section 1 and the second transmission section 2 are detachable.

[0041] The inner diameter of the hollow protective tube matches the diameter of the transmission rod. One end of the hollow protective tube is sleeved on the end of the first transmission section 1 near the end of the second transmission section 2, and the other end of the hollow protective tube is sleeved on the end of the second transmission section 2 near the end of the first transmission section 1. The hollow protective sleeve can be a hollow cylinder.

[0042] The hollow protective tube has multiple through holes 7 through the tube wall. The hollow protective tube is fixed to the transmission rod through the through holes 7 and fasteners, which can be bolts.

[0043] The outer surfaces of the first transmission section 1 and the second transmission section 2 are symmetrically provided with two planes 8 along the length direction, ensuring that at least two bolts pass through the through hole 7 and abut vertically on the plane 8. The outer surface of the transmission rod is mostly curved. The two planes 8 are provided on the outer surfaces of the two transmission sections, and at least two fasteners abut on the plane 8, which enhances the stability of the connector 3 when it is fixed on the transmission rod.

[0044] The working process of this embodiment is as follows:

[0045] When it is necessary to replace the conveyor belt 11, loosen the fasteners on the connector 3, remove the connector 3 or put it into the first transmission section 1 or the second transmission section 2, so that the connection between the first transmission section 1 and the second transmission section 2 is disconnected and a gap is left. Remove the conveyor belt pulley 10 from the gap and replace the conveyor belt 11. After the replacement is completed, put the conveyor belt pulley 10 back into the transmission rod from the gap, and fix the connector 3 to the connection between the first transmission section 1 and the second transmission section 2 with the fasteners.

[0046] This invention designs the transmission rod as a segmented type, with the two segments connected by a connector 3. When replacing the conveyor belt 11, simply pull the connector 3 away from the connection between the first transmission segment 1 and the second transmission segment 2, separating the first transmission segment 1 and the second transmission segment 2. Then, remove the conveyor belt pulley 10 from the gap between the first and second transmission segments. This completes the replacement process of the conveyor belt 11 without disassembling the frame or removing the entire transmission connection assembly from the frame. This simplifies the work process, improves maintenance efficiency and flexibility, reduces maintenance time, and also reduces mutual collision and wear between the frame and the transmission connection assembly, thus helping to extend the service life of the punching machine.

[0047] Example 2

[0048] See Figures 1-2 This embodiment provides a transmission connection assembly, including a transmission rod for transmitting power so that the conveyor pulley 10 mounted on the transmission rod can rotate. The transmission rod includes a first transmission section 1 and a second transmission section 2. The two transmission sections can be independently mounted with the conveyor pulley 10, and the ends of the first transmission section 1 and the second transmission section 2 that are close to each other can be detachably connected.

[0049] A movable hollow protective tube is fitted onto the transmission rod. The hollow protective tube is used to fix and protect the connection between the first transmission section 1 and the second transmission section 2. When the hollow protective tube is located at the connection between the first transmission section 1 and the second transmission section 2, the first transmission section 1 and the second transmission section 2 are connected. When the hollow protective tube is located on the first transmission section 1 or the second transmission section 2, the first transmission section 1 and the second transmission section 2 are detachable.

[0050] The transmission rod also includes a connecting section 4 disposed between the first transmission section 1 and the second transmission section 2, for movably connecting the first transmission section 1 and the second transmission section 2, and the connecting section 4 is matched with both the first transmission section 1 and the second transmission section 2.

[0051] The inner diameter of the hollow protective tube matches the diameter of the transmission rod. One end of the hollow protective tube is sleeved on the end of the first transmission section 1 near the second transmission section 2, and the other end of the hollow protective tube is sleeved on the end of the second transmission section 2 near the first transmission section 1. At the same time, the hollow protective sleeve is completely sleeved on the outer surface of the connecting section 4. The hollow protective sleeve can be a hollow cylinder.

[0052] The first transmission segment 1 and the second transmission segment 2 are both provided with grooves 5 at their respective ends that are close to each other. Both ends of the connecting segment 4 are provided with bosses 6 that match the grooves 5. The first transmission segment 1, the connecting segment 4 and the second transmission segment 2 are connected by the grooves 5 and the bosses 6. The grooves 5 can be provided with U-shaped through grooves, which are milled perpendicularly from one plane 8 to the other plane 8. The bosses 6 can be provided with U-shaped bosses 6, and the length direction of the U-shaped bosses 6 is perpendicular to the two planes 8.

[0053] The hollow protective tube has multiple through holes 7 through the tube wall. The hollow protective tube is fixed to the transmission rod through the through holes 7 and fasteners, which can be bolts.

[0054] Two planes 8 are symmetrically arranged on the outer surfaces of the first transmission section 1, the connecting section 4, and the second transmission section 2 along the length direction to ensure that at least two bolts pass through the through hole 7 and abut perpendicularly on the plane 8. The outer surface of the transmission rod is mostly curved. Two planes 8 are arranged on the outer surfaces of the two transmission sections and the connecting section 4 to ensure that at least two fasteners abut on the plane 8, which enhances the stability of the connecting piece 3 when it is fixed on the transmission rod.

[0055] The working process of this embodiment is as follows:

[0056] When it is necessary to replace the conveyor belt 11, loosen the fasteners on the connector 3, first pull the hollow protective tube away from the connection, remove the connecting section 4, and then remove or put the hollow protective tube into the first transmission section 1 or the second transmission section 2, so that the connection between the first transmission section 1 and the second transmission section 2 is disconnected and a gap is left. Remove the conveyor belt pulley 10 from the gap and replace the conveyor belt 11. After the replacement is completed, put the conveyor belt pulley 10 back into the transmission rod from the gap, and fix the hollow protective tube to the connection between the first transmission section 1, the connecting section 4 and the second transmission section 2 with fasteners.

[0057] This invention designs the transmission rod as a segmented type, with the two segments connected by a connector 3. When replacing the conveyor belt 11, simply pull the connector 3 away from the connection between the first transmission segment 1 and the second transmission segment 2, separating the first transmission segment 1 and the second transmission segment 2. Then, remove the conveyor belt pulley 10 from the gap between the first and second transmission segments to complete the replacement process of the conveyor belt 11. This eliminates the need to disassemble the frame or remove the entire transmission connection assembly from the frame, simplifying the work process, improving maintenance efficiency and flexibility, reducing maintenance time, and reducing mutual collisions and wear between the frame and the transmission connection assembly, thus helping to extend the service life of the punching machine. Furthermore, a matching connecting segment 4 is provided between the two transmission segments to ensure precise alignment at the connection point, helping to reduce transmission errors and wear caused by poor connection, while also improving the coaxiality and concentricity of the transmission rods.

[0058] Example 3

[0059] See Figures 1-2 The punching machine provided in this embodiment is equipped with the conveying connection assembly described in Embodiment 1 or Embodiment 2, including a frame with two side plates 9. The side plates 9 provide stable mechanical support for other components. The conveying connection assembly is disposed between the two side plates 9. A conveyor belt wheel 10 for mounting a conveyor belt 11 is sleeved on the transmission rod. The ends of the first transmission section 1 and the second transmission section 2 that are far apart from each other are respectively fixed to the inner sides of the two side plates 9.

[0060] Multiple conveyor belt pulleys 10 are provided. A conveyor belt pulley 10 is fitted on the first transmission section 1 and the second transmission section 2. Some of the conveyor belt pulleys 10 are installed on the inner side of the two side plates 9 away from the transmission rod. Two conveyor belt pulleys 10 located on the same side of the frame cooperate with each other to install a conveyor belt 11.

[0061] Since some conveyor belt pulleys 10 are independently installed inside the side plate 9, only one conveyor belt pulley 10 is installed in the conveyor connection assembly for the same conveyor belt 11. Therefore, when replacing the conveyor belt 11, simply pull the connector 3 away from the connection of the conveyor belt 11 and remove the conveyor belt pulley 10 of the conveyor belt 11 that needs to be replaced for replacement.

[0062] This utility model uses segmented transmission rods and connectors 3 to replace the traditional integrated transmission connection components, enabling the replacement of the conveyor belt 11 without disassembling the entire frame. This simplifies the maintenance process, reduces collisions between the frame and the transmission connection components caused by frequent disassembly and reassembly, helps reduce wear, and extends the service life of the punching machine.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transmission connection component, characterized in that: Includes a transmission rod, which includes a first transmission section (1) and a second transmission section (2), wherein the ends of the first transmission section (1) and the second transmission section (2) that are close to each other are detachably connected; The transmission rod is provided with a movable connector (3). When the connector (3) is located at the connection between the first transmission segment (1) and the second transmission segment (2), the first transmission segment (1) and the second transmission segment (2) are connected. When the connector (3) is located at the first transmission segment (1) or the second transmission segment (2), the first transmission segment (1) and the second transmission segment (2) are detachable.

2. The transmission connection component according to claim 1, characterized in that: The connector (3) includes a hollow protective tube, the inner diameter of which matches the diameter of the transmission rod; One end of the hollow protective tube is sleeved on the end of the first transmission section (1) near the end of the second transmission section (2), and the other end of the hollow protective tube is sleeved on the end of the second transmission section (2) near the end of the first transmission section (1).

3. A transmission connection component according to claim 1 or 2, characterized in that: The transmission rod further includes a connecting section (4) disposed between the first transmission section (1) and the second transmission section (2), wherein the first transmission section (1) and the second transmission section (2) are connected through the connecting section (4), and the connecting section (4) is matched with the first transmission section (1) and the second transmission section (2).

4. A transmission connection component according to claim 3, characterized in that: The first transmission section (1) and the second transmission section (2) are both provided with grooves (5) at their respective ends that are close to each other, and both ends of the connecting section (4) are provided with bosses (6) that match the grooves (5); The first transmission segment (1) and the connecting segment (4), as well as the second transmission segment (2) and the connecting segment (4), are connected by the groove (5) and the boss (6).

5. A transmission connection component according to claim 4, characterized in that: The connector (3) has multiple through holes (7), and the connector (3) is fixed to the transmission rod through the through holes (7) and fasteners.

6. A transmission connection component according to claim 5, characterized in that: The outer surfaces of the first transmission section (1) and the second transmission section (2) are symmetrically provided with two planes (8) along the length direction, and at least two of the fasteners pass through the through hole (7) and abut against the planes (8) vertically.

7. A transmission connection component according to claim 4, characterized in that: The groove (5) is a U-shaped through groove, and the boss (6) is a U-shaped boss (6).

8. A transmission connection component according to claim 2, characterized in that: The hollow protective tube is a hollow cylinder.

9. A punching machine, characterized in that: The conveying connection assembly according to any one of claims 1-8 is installed, including a frame with two side plates (9), the conveying connection assembly being disposed between the two side plates (9), a conveyor pulley (10) for mounting a conveyor belt (11) being sleeved on the transmission rod, and the ends of the first transmission section (1) and the second transmission section (2) being far apart from each other being fixed to the inner sides of the two side plates (9).

10. A punching machine according to claim 9, characterized in that: The conveyor belt pulleys (10) are provided in multiple ways. Each of the first transmission section (1) and the second transmission section (2) is fitted with a conveyor belt pulley (10). Some of the conveyor belt pulleys (10) are installed on the inner side of the two side plates (9) away from the transmission rod. Two conveyor belt wheels (10) located on the same side of the frame cooperate to install a conveyor belt (11).