Feeding mechanism of heat exchanger bending machine and bending machine using the same

Abstract

The present invention discloses a feeding mechanism of a heat exchanger bending machine and a bending machine using the same, the feeding mechanism comprises a loading frame, the loading frame is provided with a conveying unit, the conveying unit comprises a conveying assembly and a transporting assembly, the conveying assembly is used for carrying and transporting the workpiece; the transporting assembly is located on one side of the conveying assembly, and is used for receiving the workpiece to be bent on the conveying assembly and transporting the workpiece to the bending station or taking out the bent workpiece from the bending station and transporting it to the conveying assembly; the feeding mechanism can realize the loading and transporting of the workpiece to be bent and the taking out and transporting of the bent workpiece, so that the workpiece can be transported after the bending process without passing through other transporting devices, making the overall structure of the bending machine more compact, reducing the occupied space of the bending machine, and the loading method is simple and convenient, reducing the friction force on the workpiece during transportation, reducing surface scratches, ensuring that the bent workpiece is subjected to uniform force during transportation, and improving the yield rate.

Description

Technical Field

[0001] The invention belongs to the field of heat exchanger bending machines, and in particular relates to a feeding mechanism of a heat exchanger bending machine and a bending machine using the same. Background Art

[0002] Tube-fin heat exchangers, as compact heat exchangers, are widely used in the refrigeration industry. Heat exchanger forming processes primarily include tube bending (forming U-shaped tubes), mechanical tube expansion (achieving tube-fin connections), and tube bundle bending (forming L-shaped or G-shaped heat exchangers). Tube bundle bending is a key process in heat exchanger forming and significantly impacts performance.

[0003] During tube bundle bending, the heat exchanger is first transported to a specified position, with the desired bending area positioned against a bending die (roller) with a predetermined bend radius. The heat exchanger is then clamped on either side of the die, and the clamping components on one or both sides rotate and move about the die, squeezing the heat exchanger along the die to the desired bend angle. More specifically, the heat exchanger is fed into the bending machine in a horizontal position. The desired bending area is then positioned against the die in the horizontal direction. The die is then positioned above the desired bending area. The front end of the heat exchanger is clamped between the die and the clamping die (lower plate), while the rear end is supported by a bottom plate (follower plate). The actuator is driven to rotate the die and clamping die to the required angle, raising the clamping die to rotate the front end of the heat exchanger about the center of the die, thus forming the heat exchanger along the die.

[0004] In the traditional tube bundle bending process, the heat exchanger to be bent is mostly manually transported through the input end of the bending machine main unit to the bending die inside the bending machine main unit for bending and forming. This loading method has low work efficiency and high labor intensity.

[0005] In order to solve the above problems, the applicant has previously created a related feeding mechanism, and the specific reference is to the announcement number CN 104690182 B, and the patent name is an invention patent for a feeding assembly of a bending machine. The feeding assembly of the bending machine disclosed in this technical solution carries the workpiece to be bent (for example, a heat exchanger to be bent) on a feeding platform and is pushed by a material-diverting mechanism, thereby realizing automatic transportation and reducing labor intensity and improving work efficiency; and the feeding platform is driven to rise or fall by the feeding lifting mechanism to adjust the height of the feeding platform, so that the feeding platform can be accurately docked with the main machine of the external bending machine, so that the entire process of the feeding assembly conveying the workpiece to be bent to the main machine of the external bending machine and the main machine of the external bending machine receiving the material is stable and smooth, which solves the problem that the feeding platform cannot be accurately docked with the main machine of the external bending machine due to the existence of various errors such as assembly errors; in addition, using The independent material-dispensing mechanism and loading and conveying assembly enable the loading platform to push the workpiece to be bent normally at different heights. However, this structure uses a pushing method to push the workpiece to be bent into the main machine of the bending machine. During the pushing process of the workpiece to be bent, friction occurs between the workpiece to be bent and the loading platform, so that there is a certain friction between the workpiece to be bent and the loading platform. During the pushing process, the surface of the workpiece to be bent will be rubbed by the surface of the loading platform, which can easily cause scratches on the surface of the workpiece to be bent, affecting the appearance of the product. In addition, due to the push-loading method, the guidance of the workpiece to be bent on the pushing path is particularly important. Therefore, this solution provides two guide rods on the loading platform to guide the workpiece to be bent. However, this structure has the following disadvantages:

[0006] 1) If the distance between the two guide rods is equal to the width of the workpiece to be bent, it will increase the difficulty of feeding the workpiece to be bent. In addition, considering the errors generated during the manufacturing process of the workpiece to be bent, it may cause the workpiece to be bent to be unable to enter the loading assembly, making loading inconvenient;

[0007] 2) If the distance between the two guide rods is greater than the width of the workpiece to be bent, the workpiece to be bent may be tilted due to uneven force during the pushing process, causing it to enter the main unit of the bending machine in a skewed state, which may easily affect the bending yield of the workpiece to be bent; in severe cases, the workpiece to be bent may be stuck between the two guide rods, damaging the loading assembly.

[0008] In addition, when the above-mentioned loading assembly is in use, it can only realize one-way loading, that is, it can only transport the workpiece to be bent to the bending station. After the bending process is completed, the bent workpiece needs to be taken out through other discharging and conveying structures, which will increase the space occupied by the bending machine. If the placement space of the bending machine is limited, the feasibility of the bending machine using the loading assembly is low and cannot meet the space requirements of the bending machine. Summary of the Invention

[0009] One object of the present invention is to provide a feeding mechanism for a bending machine and a bending machine using the same, which integrates the function of loading a workpiece to be bent and the function of removing a workpiece that has been bent, thereby saving space occupied by the bending machine and making the bending machine more compact as a whole.

[0010] Another object of the present invention is to provide a feeding mechanism of a bending machine and a bending machine using the same, which can realize convenient and simple loading of the workpiece to be bent, reduce the friction force on the workpiece to be bent during the transportation process, reduce the scratches on the surface of the workpiece to be bent due to friction, and make the workpiece to be bent be evenly stressed during the transportation process.

[0011] To achieve the above object, the present invention adopts the following technical solutions:

[0012] A feeding mechanism of a heat exchanger bending machine includes a feeding frame, the feeding frame is provided with a conveying unit for conveying a workpiece, and the conveying unit includes:

[0013] A conveying assembly, used for carrying and conveying workpieces;

[0014] The conveying assembly is located on one side of the conveying assembly and is used to receive the workpiece to be bent on the conveying assembly and transport the workpiece to the bending station or to take the bent workpiece from the bending station and transport it to the conveying assembly;

[0015] The bottom plate is used to support the conveying components and the handling components.

[0016] Preferably, there are at least two groups of conveying components, which are arranged parallel to each other and spaced apart and side by side along the Y-axis direction of the loading rack; the transporting components and the conveying components are arranged correspondingly and are respectively distributed on one side of each group of conveying components.

[0017] Preferably, the transport assembly comprises:

[0018] The supporting seat is arranged parallel to the conveying assembly and is used to support and transport the workpiece;

[0019] The Z-axis drive assembly is connected to the support base and is used to drive the support base to move along the Z-axis direction of the loading frame, so that the support base can support the workpiece to be bent on the conveying assembly or place the bent workpiece onto the conveying assembly;

[0020] The X-axis drive assembly is connected to the support seat and is used to drive the support seat to move along the X-axis direction of the loading frame, so that the support seat can transport the workpiece to be bent to the bending station or remove the bent workpiece from the bending station.

[0021] Preferably, a Y-axis guide assembly and a Y-axis power source are provided between the loading rack and the conveying unit. The conveying unit is installed on the loading rack through the Y-axis guide assembly. The conveying unit can move along the Y-axis direction of the loading rack on the Y-axis guide assembly. The Y-axis power source is installed on the base plate. A Y-axis transmission mechanism is provided between the Y-axis power source and the conveying unit, which can realize the movement of the conveying unit along the Y-axis direction of the loading rack.

[0022] Preferably, it also includes a carrier rack, which is arranged on the loading rack. The conveying unit is installed on the carrier rack. A loading lifting component is provided between the carrier rack and the loading rack. The loading lifting component drives the carrier rack to rise or fall along the Z-axis direction of the loading rack.

[0023] Preferably, a Y-axis guide assembly and a Y-axis power source are provided between the carrier frame and the conveying unit, the conveying unit is installed on the carrier frame through the Y-axis guide assembly, the conveying unit can move along the Y-axis direction of the loading frame on the Y-axis guide assembly, the Y-axis power source is installed on the base plate, and a Y-axis transmission mechanism is provided between the Y-axis power source and the conveying unit, which can realize the movement of the conveying unit along the Y-axis direction of the loading frame.

[0024] Preferably, the loading and lifting assembly includes four loading turbine screw lifts installed on the loading frame and a loading and lifting motor for driving the four loading turbine screw lifts to move synchronously. The four loading turbine screw lifts are distributed at the four corners of the loading frame. A loading transmission mechanism is provided between the loading and lifting motor and the four loading turbine screw lifts, which can realize the synchronous movement of the four turbine screw lifts.

[0025] Preferably, the conveying assembly includes a conveying mounting seat, a conveyor belt, a conveying roller group and a conveying roller driving motor. The conveying mounting seat is installed on the base plate, the conveying roller group is installed on the conveying mounting seat, the conveyor belt is sleeved on the conveying roller group, and the conveying roller group is driven to rotate by the conveying roller driving motor, so that the conveyor belt can convey the workpiece on the conveying assembly.

[0026] Preferably, the Z-axis drive assembly includes at least two sets of Z-axis guide assemblies and a Z-axis power source, and the Z-axis power source is mounted on the base plate;

[0027] Two sets of Z-axis guide assemblies are installed on the base plate and are spaced apart along the X-axis direction of the loading rack. The Z-axis power source is placed between the two sets of Z-axis guide assemblies. A connecting plate is installed at one end of the two sets of Z-axis guide assemblies. The supporting seat is provided on the connecting plate. The power output end of the Z-axis power source is connected to the connecting plate, driving the connecting plate to move up and down along the Z-axis direction of the loading rack, thereby realizing the up and down movement of the supporting seat in the Z-axis direction of the loading rack;

[0028] The X-axis drive assembly includes an X-axis guide assembly and an X-axis power source. The support seat is installed on the connecting plate through the X-axis guide assembly. The support seat can move along the X-axis direction of the loading rack on the X-axis guide assembly. The X-axis power source is installed on the connecting plate. An X-axis transmission mechanism is provided between the X-axis power source and the support seat, which can realize the movement of the support seat along the X-axis direction of the loading rack.

[0029] A bending machine comprises a frame, a first bending mechanism arranged on the frame and capable of completing the bending process on both sides of a workpiece, a second bending mechanism and a follower mechanism arranged on the frame and capable of carrying the workpiece, the follower mechanism being located between the first bending mechanism and the second bending mechanism, and further comprising the feeding mechanism as described above, the feeding mechanism being located on one side of the frame, and transporting the workpiece to be bent to the bending station or taking the bent workpiece out of the bending station to form the feeding mechanism of the bending machine.

[0030] Beneficial effects of the present invention:

[0031] Through the above scheme, when in use, the feeding mechanism can realize the loading and conveying of the workpiece to be bent and the removal and conveying of the workpiece after the bending is completed, so that the workpiece can be transported by the bending machine without passing through other conveying devices after the bending process, making the bending machine more compact and effectively reducing the occupied space of the bending machine; in addition, when loading the workpiece to be bent, after the conveying component conveys the workpiece (for example, it can be a heat exchanger) into place, the conveying component is linked by the X-axis and the Z-axis to convey the workpiece on the conveying component to the follower mechanism of the bending machine. Through the above-mentioned loading method, loading is simple and convenient, which can effectively reduce the friction of the workpiece during transportation, reduce the scratches on the surface of the workpiece caused by friction, ensure that the workpiece will not be stuck on the feeding mechanism, realize automatic transportation, reduce labor intensity and improve work efficiency; moreover, it is ensured that the bent workpiece is subjected to uniform force during transportation, so that the workpiece will not be easily tilted due to uneven force on the workpiece during transportation, so that it enters the main unit of the bending machine in a skewed state, thereby easily affecting the yield rate of the workpiece bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic plan view of the feeding mechanism provided in the first embodiment of the present invention;

[0033] Figure 2 for Figure 1 The right side view of the feeding mechanism is provided;

[0034] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the feeding mechanism provided;

[0035] Figure 4 A schematic plan view of the structure of a conveying unit according to the first embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the planar structure of the conveying unit provided in the first embodiment of the present invention from another angle;

[0037] Figure 6 A schematic diagram of the three-dimensional structure of the conveying assembly and the base plate provided in the first embodiment of the present invention;

[0038] Figure 7 A schematic diagram of the planar structure of the conveying assembly and the base plate provided in the first embodiment of the present invention;

[0039] Figure 8 A schematic diagram of the planar structure of the conveying assembly and the bottom plate provided in the first embodiment of the present invention from another angle;

[0040] Figure 9 A schematic diagram of the structural decomposition of the feeding mechanism provided in the second embodiment of the present invention;

[0041] Figure 10 A schematic plan view of the structure of a feeding mechanism according to a second embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the planar structure of a bending machine provided in the third embodiment of the present invention;

[0043] Figure 12 for Figure 11 Schematic diagram of the three-dimensional structure of the bending machine provided. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] Example 1:

[0046] like Figures 1 to 8As shown, this embodiment provides a feeding mechanism of a heat exchanger bending machine, including a loading frame 1, on which a conveying unit 10 for conveying workpieces is provided. The conveying unit 10 includes a conveying component 2, a transport component 3 and a base plate 4. The conveying component 2 is used to carry and transport the workpiece; the transport component 3 is located on one side of the conveying component 2, and the transport component 3 can move along the X-axis and Z-axis directions of the loading frame 1, and is used to receive the workpiece to be bent on the conveying component 2 and transport the workpiece to the bending station or to take out the bent workpiece from the bending station and transport it to the conveying component 2; the base plate 4 is used to support the conveying component 2 and the transport component 3, and the conveying path of the conveying component 2 and the transport path of the transport component 3 for transporting the workpiece along the X-axis direction of the loading frame 1 are arranged parallel to each other.

[0047] Through the above scheme, when in use, the feeding mechanism can realize the loading and conveying of the workpiece to be bent and the removal and conveying of the workpiece after the bending process, so that the workpiece can be conveyed without passing through other conveying devices after the bending process of the bending machine, making the overall structure of the bending machine more compact and effectively reducing the occupied space of the bending machine; specifically, when the feeding mechanism is loading the workpiece to be bent, the conveying component 2 is docked with an external conveying line for conveying the workpiece, and the docking position of the conveying component 2 and the external conveying line forms a workpiece transition interface, which is convenient for the conveying component 2 to load the workpiece Receiving or discharging materials; the workpiece to be bent enters the conveying component 2 through the workpiece transition interface. After the conveying component 2 conveys the workpiece (for example, it can be a heat exchanger to be bent) to the position, the conveying component 3 first moves along the Z-axis direction of the loading rack 1, takes over the workpiece from the conveying component 2, and then moves along the X-axis direction of the loading rack 1 to send the workpiece to the bending station and then reset; when the bending machine completes the bending process of the workpiece, the conveying component 3 first moves along the Z-axis direction of the loading rack 1, and then moves along the X-axis direction of the loading rack 1 to reach the bending station. The follower in the bending machine The structure moves downward so that the workpiece that has completed the bending process can be supported on the conveying assembly 3. Then, the conveying assembly 3 first moves along the X-axis direction of the loading frame 1 to take the workpiece out of the bending station, and then moves along the Z-axis direction of the loading frame 1 so that the workpiece can be conveyed to the conveying assembly 2. Then the conveying assembly 2 sends the workpiece out through the workpiece transition interface, so that the workpiece can be fed in and out in the same direction, thereby making the overall structure of the bending machine more compact and effectively reducing the occupied space of the bending machine; in addition, when the feeding mechanism is loading the workpiece to be bent, the feeding mechanism is fed through the X-axis and The two-axis linkage loading method of the Z axis makes the loading process simple, convenient and fast, and can effectively reduce the friction of the workpiece during transportation, reduce the scratches on the workpiece surface caused by friction, ensure that the workpiece will not be stuck on the feeding mechanism 500, realize automatic transportation, reduce labor intensity and improve work efficiency; moreover, it ensures that the bent workpiece is subjected to uniform force during transportation, so that the workpiece will not be easily tilted due to uneven force on the workpiece during transportation, causing it to enter the main unit of the bending machine in a skewed state, which may easily affect the yield rate of the workpiece bending.

[0048] Furthermore, there are at least two groups of conveying components 2, and the two groups of conveying components 2 are arranged parallel to each other and spaced apart and side by side along the Y-axis direction of the loading frame 1; the conveying components 3 are arranged corresponding to the conveying components 2 and are respectively distributed on one side of each group of conveying components 2, so that the feeding mechanism 500 can support the workpiece more stably.

[0049] Preferably, the conveying assembly 3 includes a supporting seat 31, a Z-axis driving assembly 32 and an X-axis driving assembly 33. The supporting seat 31 is arranged parallel to the conveying assembly 2 for supporting and conveying the workpiece; the Z-axis driving assembly 32 is connected to the supporting seat 31 for driving the supporting seat 31 to move along the Z-axis direction of the loading rack 1, so that the supporting seat 31 can support the workpiece to be bent on the conveying assembly 2 or place the completed bent workpiece on the conveying assembly 2; the X-axis driving assembly 33 is connected to the supporting seat 31 for driving the supporting seat 31 to move along the X-axis direction of the loading rack 1, so that the supporting seat 31 can convey the workpiece to be bent to the bending station or take out the completed bent workpiece from the bending station. The feeding mechanism can realize the loading and conveying of the workpiece to be bent and the removal and conveying of the completed bent workpiece, so that the bending machine can realize the bending process After that, the workpiece can be transported without passing through other transport devices, making the overall structure of the bending machine more compact and effectively reducing the space occupied by the bending machine; in addition, the two-axis linkage method is adopted, so that the transport components 3 of the two sets of conveying units 10 realize an inserted conveying method when conveying the workpiece to the bending station of the bending machine, avoiding friction between the workpiece and the loading frame 1, reducing the friction force on the workpiece during the conveying process, reducing the scratches on the workpiece surface caused by friction, ensuring that the workpiece will not be stuck on the feeding mechanism 500, realizing automatic conveying, reducing labor intensity and improving work efficiency; moreover, ensuring that the bent workpiece is subjected to uniform force during the conveying process, so that the workpiece will not be easily tilted due to uneven force on the workpiece during the conveying process, causing it to enter the main unit of the bending machine in a skewed state.

[0050] Specifically, the Z-axis drive assembly 32 includes at least two groups of Z-axis guide assemblies 321 and a Z-axis power source 322, and the Z-axis power source 322 is installed on the base plate 4; the two groups of Z-axis guide assemblies 321 are installed on the base plate 4 and are spaced apart along the X-axis direction of the loading rack 1, and the Z-axis power source 322 is placed between the two groups of Z-axis guide assemblies 321. A connecting plate 34 is installed at one end of the two groups of Z-axis guide assemblies 321, and the supporting seat 31 is provided on the connecting plate 34. The Z-axis power source 32 The power output end of 2 is connected to the connecting plate 34, driving the connecting plate 34 to move up and down along the Z-axis direction of the loading rack 1, thereby realizing the up and down movement of the supporting seat 31 in the Z-axis direction of the loading rack 1; further, the Z-axis guide assembly 321 includes a fixed seat 321A mounted on the base plate 4, a sliding support seat 321B, a Z-axis guide rail 321C, and a Z-axis slider 321D matched with the Z-axis guide rail, the Z-axis slider 321D is mounted on the fixed seat 321A, the sliding support seat 321 The Z-axis guide rail 321 is connected to the Z-axis guide rail 321C, so that the sliding support seat 321B can move back and forth on the Z-axis slider 321D. The connecting plate 34 is installed at the end of the sliding support seat 321B. A clearance hole is opened on the base plate 4 corresponding to the position of the sliding support seat for the sliding support seat and the Z-axis guide rail to pass through. The Z-axis power source 322 can be a cylinder. The end of the piston rod of the cylinder can be connected to the connecting plate 34 by a screw or a connecting assembly. When the piston rod is actuated, the connecting plate 34 is driven to move up and down along the Z-axis direction of the loading frame 1, thereby realizing the up and down movement of the supporting seat 31 in the Z-axis direction of the loading frame 1. The structure is simple, practical and easy to operate. Of course, the Z guide assembly can also adopt a flanged linear bearing and a flanged guide rod. The linear bearing is installed on the base plate 4, and the flange end of the guide rod is connected to the connecting plate 34. The Z-axis power source 322 can be a motor, which drives the connecting plate 34 through a screw rod. The driving method is simple, the driving principle is simple, and it is convenient for later maintenance.

[0051] The X-axis drive assembly 33 includes an X-axis guide assembly 331 and an X-axis power source 332. The support seat 31 is installed on the connecting plate 34 through the X-axis guide assembly 331. The support seat 31 can move along the X-axis direction of the loading rack 1 on the X-axis guide assembly 331. The X-axis power source 332 is installed on the connecting plate 34. An X-axis transmission mechanism 333 is provided between the X-axis power source 332 and the support seat 31, which can realize the movement of the support seat 31 along the X-axis direction of the loading rack 1. The X-axis guide assembly 331 includes an X-axis guide rail and an X-axis slider that cooperates with the X-axis guide rail. The X-axis guide rail is installed at the bottom of the support seat 31. The X-axis slider is connected to the connecting plate 34. The connecting plate 34 is connected so that the supporting seat 31 can move back and forth on the X-axis slider. The X-axis transmission mechanism 333 includes an X-axis rack 333A and an X-axis gear 333B meshing with the X-axis rack 333A. The X-axis rack 333A is installed on one side of the supporting seat 31, and the X-axis gear 333B is installed on the power output shaft of the X-axis power source 332. The X-axis power source 332 drives the X-axis gear 333B, so that the X-axis gear drives the X-axis rack, thereby driving the supporting seat 31 to move along the X-axis direction of the loading frame 1 on the connecting plate 34. The X-axis power source 332 is a motor with a simple driving method and a simple driving principle, which is convenient for later maintenance.

[0052] A Y-axis guide assembly 5 and a Y-axis power source 6 are provided between the loading frame 1 and the conveying unit 10. There are at least two groups of Y-axis guide assemblies 5, which are respectively installed on both sides of the same end surface of the loading frame 1. The length direction of the Y-axis guide assembly 5 is arranged along the Y-axis direction of the loading frame 1. The conveying unit 10 is installed on the loading frame 1 through the Y-axis guide assembly 5. The conveying unit 10 can move along the Y-axis direction of the loading frame 1 on the Y-axis guide assembly 5. The Y-axis power source 6 is installed on the base plate 4. A Y-axis transmission mechanism 7 is provided between the Y-axis power source 6 and the conveying unit 10, which can realize the movement of the conveying unit 10 along the Y-axis direction of the loading frame 1. The Y-axis transmission mechanism 7 is located between the two groups of Y-axis guide assemblies 5. The Y-axis guide assembly 5 includes a Y-axis guide rail and a Y-axis slider cooperating with the Y-axis guide rail. The Y-axis guide rail is installed on the loading frame 1, and the base plate 4 is installed On the Y-axis slider, the conveying unit 10 can move back and forth on the Y-axis guide rail. The Y-axis transmission mechanism 7 includes a Y-axis rack and a Y-axis gear meshing with the Y-axis rack. The Y-axis rack is installed on the loading rack 1, and the power output shaft of the Y-axis power source 6 passes through the bottom of the base plate 4 from top to bottom. The Y-axis gear is installed on the power output shaft of the Y-axis power source 6. The Y-axis power source 6 drives the Y-axis gear, so that the Y-axis gear drives the Y-axis rack, thereby driving the conveying unit 10 to move on the loading rack 1 along the Y-axis direction of the loading rack 1. The Y-axis power source 6 is a motor. This design enables the two conveying units 10 to make adaptive adjustments according to the width of different workpieces. It has a high degree of automation, is easy to adjust, simple to control, and easy to load, so that the feeding mechanism 500 can transport a variety of workpieces of different sizes, making it more versatile.

[0053] The conveying assembly 2 includes a conveying mounting seat 21, a conveyor belt (not shown), a conveying roller group 23 and a conveying roller driving motor 24. The conveying mounting seat 21 is installed on the base plate 4, the conveying roller group 23 is installed on the conveying mounting seat 21, the conveyor belt is sleeved on the conveying roller group 23, and the conveying roller group 23 is driven to rotate by the conveying roller driving motor 24, so that the conveyor belt can convey the workpiece on the conveying assembly 2; in the Z-axis direction of the loading frame 1, when the supporting seat 31 is in place, the end face of the supporting seat 31 is lower than the top of the conveying assembly 2, which is reasonable and convenient for the conveying assembly 2 to convey the workpiece; a limit group is provided at the end of the conveying mounting seat 21 Part 20, the limit component 20 is used to limit the workpiece to prevent the workpiece from flying out of the conveying component 2 during the conveying process, so that the conveying component 3 can support the workpiece. The limit component 20 includes a cylinder, a limit mounting seat, two flanged guide sleeves, a flanged guide rod and a limit block matched with the guide sleeve. The limit mounting seat is installed on the base plate 4, the guide sleeve is installed on the limit mounting seat, the guide rod is inserted into the guide sleeve and its flange end is connected to the limit block, the cylinder is installed on the limit mounting seat and its piston rod is connected to the limit block, the cylinder is used to drive the limit block to move in the Z-axis direction of the feeding frame 1, and the limit component 20 is designed to automatically adjust up and down. When conveying the workpiece, the cylinder of the limit assembly 20 is in the out-of-position state, so that the end face of the limit block is higher than the end face of the conveying assembly 2, thereby playing a role in limiting. A sensor (such as an infrared sensor) for detecting whether the workpiece has reached the limit block can be provided in the attachment of the limit assembly 20. When the workpiece is detected to have reached the limit block, the sensor sends a signal to make the controller (such as a PLC) stop the action of the conveying assembly 2, control the cylinder of the limit assembly 20 to reset, so that the end face of the limit block is lower than the end face of the conveying assembly 2, and control the Z-axis power source 322 of the conveying assembly 3 to start, so that the support seat 31 moves along the Z-axis direction of the loading frame 1, so that the support seat 31 can The workpiece on the conveying component 2 is lifted to realize the separation of the conveying component 2 and the workpiece. Finally, the controller drives the X-axis power source 332 to make the supporting seat 31 send the workpiece along the X-axis direction of the loading rack 1 to the bending station of the bending machine. The automatic up and down adjustment of the limit component 20 enables the conveying component 3 to shorten the displacement of the conveying component 3 in the Z-axis direction of the loading rack 1 as much as possible when conveying the component to be bent along the Z-axis direction of the loading rack 1 (that is, the conveying component 3 only needs to realize the separation of the conveying component 2 and the workpiece in the Z-axis direction of the loading rack 1, without considering the height difference between the end face of the limit block and the conveying component 2 when the cylinder is out of position), so that the workpiece transportation is more stable.

[0054] A guide mechanism 30 is also provided on the loading rack 1. The guide mechanism 30 is located on one side of the loading rack 1 and is arranged parallel to the conveying unit 10 along the X-axis direction of the loading rack 1. The guide mechanism 30 is used to guide the workpiece after it is transported to the right position to prevent the workpiece from being skewed during loading or conveying, causing the conveying component 3 to directly convey the skewed workpiece to the bending machine during conveying. The guide mechanism 30 includes a fixed bracket 30A, a fixed plate 30B installed on the fixed bracket 30A, a cylinder 30C installed on the fixed plate 30B, and guide sleeves with flanges respectively installed at both ends of the fixed plate 30B. 30D, a flanged guide rod 30E and a guide plate 30F are matched with the guide sleeve 30D, the cylinder 30C is located between the two guide sleeves 30D, the guide rod 30E is inserted into the guide sleeve 30D and its flange end is connected to the guide plate 30F, the piston rod of the cylinder 30C is connected to the guide plate 30F, the guide plate 30F is arranged parallel to the conveying unit 10, and the cylinder 30C drives the guide plate 30F to move back and forth along the Y-axis direction of the loading frame 1. While ensuring that the workpiece will not be skewed during transportation, it will not affect the conveying efficiency of the conveying component 2 and will not increase the difficulty of transportation. The structural setting is reasonable and practical and convenient.

[0055] Example 2:

[0056] The solution provided in the first embodiment is suitable for the case where the distance between the workpiece transition interface and the bending station is not much different. In order to further improve the versatility of the conveying component 3, this embodiment has made further improvements, specifically as follows: Figure 9 and Figure 10 As shown, in this embodiment, the feeding mechanism includes a loading rack 1, a carrier rack 8 arranged on the loading rack 1 and a conveying unit 10 installed on the carrier rack 8. A loading lifting component 9 is provided between the carrier rack 8 and the loading rack 1. The loading lifting component 9 drives the carrier rack 8 to rise or fall along the Z-axis direction of the loading rack 1, thereby driving the conveying unit 10 to rise or fall, which is convenient for the conveying unit 10 to transport the workpiece. Among them, the conveying unit 10 in this embodiment is consistent with the structure described in Example 1, and will not be repeated here. The carrier rack 8 is driven to rise or fall by the loading lifting component 9 to adjust the height of the carrier rack 8. Even if the distance between the workpiece transition interface and the bending station is greatly different, it can ensure that the feeding mechanism can complete the transportation of the workpiece, thereby improving the versatility of the feeding mechanism.

[0057] Furthermore, a Y-axis guide assembly 5 and a Y-axis power source 6 are provided between the carrier frame 8 and the conveying unit 10. There are at least two groups of Y-axis guide assemblies 5, which are respectively installed on both sides of the same end surface of the carrier frame 8. The length direction of the Y-axis guide assembly 5 is arranged along the Y-axis direction of the loading frame 1. The conveying unit 10 is installed on the carrier frame 8 through the Y-axis guide assembly 5. The conveying unit 10 can move along the Y-axis direction of the loading frame 1 on the Y-axis guide assembly 5. The Y-axis power source 6 is installed on the base plate 4. A Y-axis transmission mechanism 7 is provided between the Y-axis power source 6 and the conveying unit 10, which can realize the movement of the conveying unit 10 along the Y-axis direction of the loading frame 1; the Y-axis transmission mechanism 7 is located between the two groups of Y-axis guide assemblies 5, and the Y-axis guide assembly 5 includes a Y-axis guide rail and a Y-axis slider cooperating with the Y-axis guide rail. The Y-axis guide rail is installed on the carrier frame 8. The base plate 4 is installed on the Y-axis slider so that the conveying unit 10 can move back and forth on the Y-axis guide rail. The Y-axis transmission mechanism 7 includes a Y-axis rack and a Y-axis gear meshing with the Y-axis rack. The Y-axis rack is installed on the object carrier frame 8. The power output shaft of the Y-axis power source 6 passes through the bottom of the base plate 4 from top to bottom. The Y-axis gear is installed on the power output shaft of the Y-axis power source 6. The Y-axis power source 6 drives the Y-axis gear, so that the Y-axis gear drives the Y-axis rack, thereby driving the conveying unit 10 to move on the loading frame 1 along the Y-axis direction of the loading frame 1. The Y-axis power source 6 is a motor. This design enables the two conveying units 10 to make adaptive adjustments according to the width of different workpieces. It has a high degree of automation, convenient adjustment, simple control, and convenient loading, so that the feeding mechanism 500 can transport a variety of workpieces of different sizes, making it more versatile.

[0058] Furthermore, the loading lifting assembly 9 includes four loading turbine screw lifts 91 installed on the loading frame 1 and a loading lifting motor 92 for driving the four loading turbine screw lifts 91 to move synchronously. The four loading turbine screw lifts 91 are distributed at the four corners of the loading frame 8. A loading transmission mechanism 93 is provided between the loading lifting motor 92 and the four loading turbine screw lifts 91, which can realize the synchronous movement of the four turbine screw lifts.

[0059] Specifically, the liftable screws of the four loading worm screw lifts 91 are against the bottom of the loading frame 8, and the loading transmission mechanism 93 includes three loading lifting steering boxes and six loading lifting transmission shafts. The three loading lifting steering boxes are arranged at intervals along the Y-axis direction parallel to the loading frame 1, and the two adjacent loading lifting steering boxes are connected by a loading lifting transmission shaft respectively. The loading lifting steering box located in the middle is connected to the transmission wheel on the output shaft of the loading lifting motor 92 through a transmission wheel and a transmission belt, or is connected to the output shaft of the loading lifting motor 92 through a loading lifting transmission shaft. The loading lifting steering boxes located at both ends are respectively cooperated with the two loading worm screw lifts 91, and the loading lifting steering boxes located at both ends and the worms that can input power to their corresponding two loading worm screw lifts 91 are respectively connected by a loading lifting transmission shaft. One motor can be used to drive multiple loading worm screw lifts 91, and the structure is compact.

[0060] A guide mechanism 30 is also provided on the carrier frame 8. The guide mechanism 30 is located on one side of the carrier frame 8 and is arranged parallel to the conveying unit 10 along the X-axis direction of the loading frame 1. The guide mechanism 30 is used to guide the workpiece after it is transported to the right position to prevent the workpiece from being skewed during loading or conveying, causing the conveying component 3 to directly convey the skewed workpiece to the bending machine during conveying. The guide mechanism 30 includes a fixed bracket 30A, a fixed plate 30B installed on the fixed bracket 30A, a cylinder 30C installed on the fixed plate 30B, and a guide sleeve with a flange respectively installed at both ends of the fixed plate 30B. 30D, a flanged guide rod 30E and a guide plate 30F are matched with the guide sleeve 30D, the cylinder 30C is located between the two guide sleeves 30D, the guide rod 30E is inserted into the guide sleeve 30D and its flange end is connected to the guide plate 30F, the piston rod of the cylinder 30C is connected to the guide plate 30F, the guide plate 30F is arranged parallel to the conveying unit 10, and the cylinder 30C drives the guide plate 30F to move back and forth along the Y-axis direction of the loading frame 1. While ensuring that the workpiece will not be skewed during transportation, it will not affect the conveying efficiency of the conveying component 2 and will not increase the difficulty of transportation. The structural setting is reasonable and practical and convenient.

[0061] Example 3:

[0062] like Figure 11 and Figure 12As shown, this embodiment provides a bending machine, including a frame 100, a first bending mechanism 200 arranged on the frame 100 and capable of completing the bending process on both sides of the workpiece, a second bending mechanism 300 and a follower mechanism 400 arranged on the frame 100 and capable of carrying the workpiece, the follower mechanism 400 is located between the first bending mechanism 200 and the second bending mechanism 300, and also includes a feeding mechanism 500 as described in Example 1 or Example 2, the feeding mechanism 500 is located on one side of the frame 100, and the feeding mechanism 500 transports the workpiece to be bent to the bending station or transports the workpiece to be bent from the bending station The workpiece is taken out of the feeding mechanism of the bending machine, wherein the bending station refers to the position where the follower mechanism 400 of the bending machine supports the workpiece. In this embodiment, the follower mechanism 400 can be lifted up and down; the feeding mechanism can realize the loading and conveying of the workpiece to be bent and the removal and conveying of the workpiece after the bending process, so that the workpiece can be transported without passing through other conveying devices after the bending process, making the overall structure of the bending machine more compact and effectively reducing the occupied space of the bending machine; specifically, when the feeding mechanism is loading the workpiece to be bent, the conveying component 2 is used to convey the workpiece together with the outside world. The conveyor line of the workpiece is docked, and the docking position of the conveyor component 2 and the external conveyor line forms a workpiece transition interface, which is convenient for the conveyor component 2 to receive or discharge the material when loading; the workpiece to be bent enters the conveyor component 2 through the workpiece transition interface. After the conveyor component 2 transports the workpiece (for example, it can be a heat exchanger to be bent) into place, the conveying component 3 first moves along the Z-axis direction of the loading rack 1 to receive the workpiece from the conveying component 2, and then moves along the X-axis direction of the loading rack 1 to send the workpiece to the bending station and then reset; when the bending machine completes the bending process of the workpiece, the conveying component 3 first moves along the loading rack 1 The conveying assembly 3 moves in the Z-axis direction of the loading frame 1, and then moves in the X-axis direction of the loading frame 1 to reach the bending station. The follower mechanism in the bending machine moves downward so that the workpiece that has completed the bending process can be supported on the conveying assembly 3. Then, the conveying assembly 3 first moves in the X-axis direction of the loading frame 1 to take the workpiece out of the bending station, and then moves in the Z-axis direction of the loading frame 1 so that the workpiece can be conveyed to the conveying assembly 2. Then the conveying assembly 2 sends the workpiece out through the workpiece transition interface, so that the workpiece can enter and exit in the same direction, thereby making the overall structure of the bending machine more compact and effectively reducing the occupied space of the bending machine.

[0063] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the present invention.

Claims

1. A feeding mechanism of a heat exchanger bending machine, comprising a feeding frame (1), characterized in that: The loading frame (1) is provided with a conveying unit (10) for conveying workpieces, and the conveying unit (10) comprises: A conveying assembly (2) is used to carry and convey workpieces; the conveying assembly (2) includes a conveying mounting seat (21), a conveying belt, a conveying roller group (23) and a conveying roller driving motor (24); the conveying mounting seat (21) is mounted on a bottom plate (4); the conveying roller group (23) is mounted on the conveying mounting seat (21); the conveying belt is sleeved on the conveying roller group (23); the conveying roller group (23) is driven to rotate by the conveying roller driving motor (24), so that the conveying belt can convey the workpiece on the conveying assembly (2); The conveying assembly (3) is located on one side of the conveying assembly (2) and is used to receive the workpiece to be bent on the conveying assembly (2) and transport the workpiece to the bending station, and to remove the bent workpiece from the bending station and transport it to the conveying assembly (2); the conveying assembly (3) includes: a supporting seat (31), the supporting seat (31) is arranged parallel to the conveying assembly (2), and is used to support and transport the workpiece; a Z-axis driving assembly (32), connected to the supporting seat (31), and is used to drive the supporting seat The support seat (31) moves along the Z-axis direction of the loading rack (1), so that the support seat (31) can support the workpiece to be bent on the conveying assembly (2) or place the workpiece that has been bent onto the conveying assembly (2); the X-axis driving assembly (33) is connected to the support seat (31) and is used to drive the support seat (31) to move along the X-axis direction of the loading rack (1), so that the support seat (31) can transport the workpiece to be bent to the bending station or remove the workpiece that has been bent from the bending station. A bottom plate (4) for supporting the conveying assembly (2) and the transporting assembly (3); The conveying components (2) have at least two groups, and the two groups of conveying components (2) are arranged parallel to each other and spaced apart and arranged side by side along the Y-axis direction of the loading machine frame (1); the transporting components (3) are arranged corresponding to the conveying components (2) and are respectively distributed on one side of each group of conveying components (2).

2. The feeding mechanism of a heat exchanger bending machine according to claim 1, characterized in that: A Y-axis guide assembly (5) and a Y-axis power source (6) are provided between the loading frame (1) and the conveying unit (10); the conveying unit (10) is mounted on the loading frame (1) via the Y-axis guide assembly (5); the conveying unit (10) can move along the Y-axis direction of the loading frame (1) on the Y-axis guide assembly (5); the Y-axis power source (6) is mounted on the base plate (4); and a Y-axis transmission mechanism (7) is provided between the Y-axis power source (6) and the conveying unit (10) for enabling the conveying unit (10) to move along the Y-axis direction of the loading frame (1).

3. The feeding mechanism of a heat exchanger bending machine according to claim 1, characterized in that: The invention also includes a carrier frame (8) which is arranged on the loading frame (1); a conveying unit (10) is installed on the carrier frame (8); a loading lifting assembly (9) is provided between the carrier frame (8) and the loading frame (1); and the loading lifting assembly (9) drives the carrier frame (8) to rise or fall along the Z-axis direction of the loading frame (1).

4. The feeding mechanism of the heat exchanger bending machine according to claim 3, characterized in that: A Y-axis guide assembly (5) and a Y-axis power source (6) are provided between the carrier frame (8) and the conveying unit (10). The conveying unit (10) is mounted on the carrier frame (8) via the Y-axis guide assembly (5). The conveying unit (10) can move along the Y-axis direction of the loading frame (1) on the Y-axis guide assembly (5). The Y-axis power source (6) is mounted on the base plate (4). A Y-axis transmission mechanism (7) is provided between the Y-axis power source (6) and the conveying unit (10) for enabling the conveying unit (10) to move along the Y-axis direction of the loading frame (1).

5. The feeding mechanism of the heat exchanger bending machine according to claim 4, characterized in that: The feeding lifting assembly (9) comprises four feeding worm screw lifts (91) mounted on a feeding frame (1) and a feeding lifting motor (92) for driving the four feeding worm screw lifts (91) to move synchronously. The four feeding worm screw lifts (91) are distributed at the four corners of the carrier frame (8). A feeding transmission mechanism (93) is provided between the feeding lifting motor (92) and the four feeding worm screw lifts (91) to achieve synchronous movement of the four worm screw lifts.

6. The feeding mechanism of a heat exchanger bending machine according to claim 1, characterized in that: The Z-axis driving assembly (32) includes at least two groups of Z-axis guide assemblies (321) and a Z-axis power source (322), and the Z-axis power source (322) is installed on the base plate (4); Two groups of Z-axis guide assemblies (321) are installed on the base plate (4) and are spaced apart along the X-axis direction of the loading frame (1). A Z-axis power source (322) is placed between the two groups of Z-axis guide assemblies (321). A connecting plate (34) is installed at one end of the two groups of Z-axis guide assemblies (321). The support seat (31) is provided on the connecting plate (34). The power output end of the Z-axis power source (322) is connected to the connecting plate (34), driving the connecting plate (34) to move up and down along the Z-axis direction of the loading frame (1), thereby realizing the up and down movement of the support seat (31) in the Z-axis direction of the loading frame (1); The X-axis drive assembly (33) includes an X-axis guide assembly (331) and an X-axis power source (332). The support seat (31) is mounted on a connecting plate (34) via the X-axis guide assembly (331). The support seat (31) can move along the X-axis direction of the loading rack (1) on the X-axis guide assembly (331). The X-axis power source (332) is mounted on the connecting plate (34). An X-axis transmission mechanism (333) is provided between the X-axis power source (332) and the support seat (31) to enable the support seat (31) to move along the X-axis direction of the loading rack (1).

7. A bending machine, comprising a frame (100), a first bending mechanism (200) arranged on the frame (100) and capable of completing a bending process on both sides of a workpiece, a second bending mechanism (300), and a follower mechanism (400) arranged on the frame (100) and capable of carrying the workpiece, wherein the follower mechanism (400) is located between the first bending mechanism (200) and the second bending mechanism (300), and is characterized in that: The invention further comprises a feeding mechanism (500) as claimed in any one of claims 1 to 6, wherein the feeding mechanism (500) is located on one side of the frame (100), and the feeding mechanism (500) transports the workpiece to be bent to the bending station or removes the bent workpiece from the bending station.

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