Automatic PET bending machine

Abstract

The utility model discloses a kind of PET automatic bending machine, including cabinet, feeding assembly on cabinet, bending assembly, discharging assembly and handling assembly, wherein feeding assembly and discharging assembly are located bending assembly two sides respectively, handling assembly realizes PET product between feeding, bending, discharging switching, the bending assembly includes mounting seat, bending mould in the mounting seat, the compression cylinder of driving bending mould lifting in the mounting seat upper side, and heating rod is embedded in bending mould, and heating shaping after bending is carried out.The utility model provides a kind of PET automatic bending machine, realizes the heat performance of automatic feeding and discharging simultaneously, ensures bending effect.

Description

Technical Field

[0001] This utility model relates to the field of PET processing, specifically to an automatic PET bending machine. Background Technology

[0002] PET material is widely used in the manufacture of products such as strapping, automotive busbars, and multi-layer composite materials due to its excellent mechanical properties, heat resistance, and recyclability. Some products, such as automotive busbars, require bending during processing. Initially, bending is mainly done manually (cold bending), and the product needs to be used immediately after each bend. Otherwise, PET is prone to springback, and if it is not used for a long time, it needs to be bent again, wasting factory resources and energy.

[0003] In recent years, with the increasing demand for automation, PET automatic bending machines have made some progress, but the following technical bottlenecks still exist:

[0004] 1. Insufficient positioning accuracy: Traditional equipment relies on manual adjustment, which can easily cause the PET sheet to shift, affecting the consistency of bending;

[0005] 2. Poor heating uniformity: Some equipment uses single-point heating, which causes the PET sheet to shift, affecting the consistency of bending.

[0006] 3. PET material has an elastic memory effect, and it is easy to spring back after bending, which affects the molding accuracy;

[0007] 4. Manual loading and unloading is inefficient and inconsistent. Utility Model Content

[0008] In view of the lack and deficiencies of existing technologies, this utility model provides an automatic PET bending machine that can improve the heat performance of the frame while realizing automatic loading and unloading, thus ensuring the bending effect.

[0009] An automatic PET bending machine includes a cabinet, a feeding component, a bending component, a discharging component, and a conveying component mounted on the cabinet. The feeding component and the discharging component are located on opposite sides of the bending component. The conveying component enables the switching of PET products between feeding, bending, and discharging. The bending component includes a mounting base, a bending die mounted in the mounting base, a pressing cylinder mounted above the mounting base to drive the bending die to rise and fall, and a heating rod embedded in the bending die for heating and shaping after bending.

[0010] Preferably, the feeding assembly includes a base plate, a side plate, a lifting platform, and a lifting drive component. The base plate is mounted on the cabinet, the lifting platform is placed on the base plate, and the lifting is controlled by the lifting drive component located below the base plate. The base plate is provided with multiple limit posts around the lifting platform. The side plate is vertically mounted on one side of the base plate, and a detection sensor is provided at the upper end of the side plate.

[0011] Preferably, the feeding assembly includes a transverse base and a plurality of material cylinders disposed on the transverse base. The transverse base is fixed on the cabinet in conjunction with a linear slide rail and a transverse cylinder. The transverse base is controlled to move laterally along the linear slide rail by the transverse cylinder.

[0012] Preferably, the conveying assembly includes a lead screw module, a linear guide, a sliding plate, a cylinder mounting base, a slide cylinder, and a suction cup assembly. The sliding plate is mounted on the linear guide and its back-and-forth sliding on the linear guide is controlled by the lead screw module. There are two sets of cylinder mounting bases, which are installed at both ends of the sliding plate. The slide cylinder is assembled on the vertical surface of the cylinder mounting base, and the suction cup assembly is fixed on the slider of the slide cylinder.

[0013] Preferably, the suction cup assembly has a cross-shaped suction cup mounting bracket and multiple vacuum suction cups. The suction cup mounting bracket is assembled into a cross structure by two mounting strips and bolts. The mounting strips are provided with strip-shaped holes, and the vacuum suction cups are assembled in the strip-shaped holes. The installation position can be adjusted at will according to the requirements.

[0014] Preferably, the bending die includes an upper template, a lower template, an upper bending pressure block, a bending floating block, a pad, two sets of bending edge guards, and a spring. The lower template is located on the bottom surface of the mounting base. The two sets of bending edge guards are arranged parallel to each other on the surface of the lower template. The bending floating plate is located below the pad and spring on the surface of the lower template. The two sets of bending floating blocks are located on both sides of the bending edge guards, forming a square bending area with the two sets of bending edge guards. The surface of the lower template in the square bending area is provided with multiple positioning pins. A heating rod is embedded in the bending edge guard. The upper bending pressure block is fixed to the back of the upper template, and a heating rod is also embedded in the upper bending pressure block. The pressing cylinder is located at the top of the mounting base, and its telescopic end passes through the mounting base and is fixed to the upper template. The pressing cylinder controls the upper template to move the upper bending pressure block downward.

[0015] Preferably, a guide post and a guide sleeve structure are provided between the upper template and the lower template.

[0016] Beneficial effects: The automatic PET bending machine disclosed in this utility model has the following beneficial effects:

[0017] The bending heating section adopts a structure in which the bending block is embedded with a heating rod. This conductive heating can effectively improve the plasticity of the material and avoid product rebound when bending.

[0018] The dual-head conveying assembly can realize synchronous conveying of two processing stations, improving processing efficiency. The adjustable structure of the suction cup assembly can meet the suction needs of PET of different sizes. At the same time, vacuum suction cups can effectively avoid friction between PET sheets and reduce scratches.

[0019] The cooperation between the loading, unloading and conveying components enables automatic loading and unloading, effectively improving overall processing efficiency. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is an overall top view of an embodiment of the present utility model;

[0022] Figure 3 This is a structural diagram of the feeding assembly in an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the feeding assembly in an embodiment of the present invention;

[0024] Figure 5 This is a structural diagram of the conveying component in an embodiment of the present utility model;

[0025] Figure 6 This is a structural diagram of the bending component in an embodiment of the present utility model;

[0026] Figure 7 This is a structural diagram of the mold in an embodiment of this utility model. Detailed Implementation

[0027] To further understand this utility model, preferred embodiments of this utility model are described below in conjunction with the accompanying drawings and examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the scope of the utility model claims.

[0028] This utility model discloses an automatic PET bending machine, which realizes the bending process of PET products. The specific structure is as follows: Figures 1-2 As shown, it includes a cabinet 1, a feeding assembly 2, a bending assembly 3, a discharging assembly 4 and a handling assembly 5 mounted on the cabinet. The feeding assembly and the discharging assembly are located on both sides of the bending assembly, and the handling assembly enables the PET product to switch between feeding, bending and discharging.

[0029] Specifically, the feeding assembly enables automatic feeding of PET sheets to be bent, and its specific structure is as follows: Figure 3 As shown, the system includes a base plate 21, a side plate 22, a lifting platform 23, and a lifting drive component 24. The base plate is mounted on the cabinet, and the lifting platform is placed on the base plate. Lifting control is achieved through the lifting drive component located below the base plate. The base plate is provided with multiple limit posts 25 arranged around the lifting platform. The limit posts can guide the lifting platform during lifting and can also limit the placement of PET sheets around the perimeter to ensure that they are neatly stacked. The lifting drive component can be an electric cylinder, a lead screw, or a pneumatic cylinder. The side plate is vertically mounted on one side of the base plate, and a detection sensor 26 is provided at the upper end of the side plate to detect whether the PET sheet to be bent has been raised to the loading height so that the handling component can pick it up and transfer it.

[0030] The feeding assembly realizes the feeding and loading of the bent PET product, and its structure is as follows: Figure 4 As shown, it includes a transverse base 41 and multiple material cylinders 42 disposed on the transverse base. The transverse base is fixed to the cabinet in conjunction with a linear slide rail 43 and a transverse cylinder 44. The transverse base is controlled to move laterally along the linear slide rail by the transverse cylinder, so that the multiple material cylinders are moved laterally to the unloading position for receiving materials. The multiple material cylinders are coordinated with the transverse setting to increase the unloading and loading capacity and ensure continuous processing.

[0031] The handling assembly is located on one side of the cabinet, enabling the handling of PET products between multiple workstations. The specific structure is as follows: Figure 5 As shown, the assembly includes a lead screw module 51, a linear guide 52, a sliding plate 53, a cylinder mounting base 55, a slide cylinder 55, and a suction cup assembly 56. The sliding plate is mounted on the linear guide and connected to the lead screw module. The lead screw module controls the sliding plate to slide back and forth on the linear guide. There are two sets of cylinder mounting bases, which are installed at both ends of the sliding plate. The cylinder mounting bases are L-shaped. The slide cylinder is mounted on the vertical surface of the cylinder mounting base. The suction cup assembly is fixed on the slider of the slide cylinder. The slide cylinder enables the lifting and lowering operation of the suction cup assembly. The suction cup assembly has a cross suction cup structure and uses vacuum suction cups to pick up PET.

[0032] The specific suction cup assembly has a cross-shaped suction cup mounting frame 561 and multiple vacuum suction cups 562. The suction cup mounting frame is assembled into a cross structure by two mounting strips and bolts, and the cross angle can be adjusted according to needs. The mounting strips are provided with strip-shaped holes 563, and the vacuum suction cups are assembled in the strip-shaped holes. The installation position can be adjusted at will according to needs. The multiple adjustment structures of the suction cup assembly can meet the suction of PET products of different sizes. During suction, the lateral movement and lifting suction are achieved by the cooperation of the screw module and the slide cylinder. The two sets of suction cup assemblies can realize the continuous switching of three work stations: loading, bending and unloading, improving the handling efficiency.

[0033] The bending machine performs bending processing on PET products, and its specific structure is as follows: Figures 6-7As shown, the assembly includes a mounting base 31, a pressing cylinder 32, a bending die 33, a heating rod 34, and multiple positioning pins 35. The mounting base is fixed to the cabinet and has a slot on the side facing the handling components. The bending die is located in the slot. The bending die includes an upper template 331, a lower template 332, an upper bending pressure block 333, a bending floating block 334, a pad block 335, two sets of bending edge stop strips 338, and a spring 339. The lower template is located on the bottom surface of the mounting base. The two sets of bending edge stop strips are arranged parallel to each other on the surface of the lower template. The pad block and spring are located below the bending floating plate on the surface of the lower template, and the two sets of bending floating blocks are located on both sides of the bending edge stop strips. A square bending area is formed by two sets of bending edge strips. Multiple positioning pins are located on the surface of the lower template within the square bending area to achieve rapid and accurate positioning when the PET is placed in. Heating rods are embedded in the bending edge strips. The upper bending pressure block is fixed to the back of the upper template, and a heating rod is also embedded in the upper bending pressure block. The pressing cylinder is located at the top of the mounting base, and its telescopic end passes through the mounting base and is fixed to the upper template. The pressing cylinder controls the upper template to move the upper bending pressure block downward, pressing the PET and realizing the bending process. After the PET board is bent, the heating rods in the upper bending pressure block and the bending edge strips heat the bending area to prevent it from rebounding.

[0034] The specific bending process is as follows: the upper template moves downward under the control of the pressing cylinder, and the upper bending block presses down on the PET sheet. As the upper bending block continues to move downward, under the pressure of the upper bending block, the bending floating block and the pad block continue to move downward to compress the spring. At this time, the PET sheet and the bending floating block move downward together into place, and the two sides of the PET sheet are blocked by the bending edge stop strip. With the cooperation of the upper bending block, the bending action is completed. In order to ensure the alignment accuracy of the upper and lower bending blocks, a guide post 336 and a guide sleeve 337 structure are also provided between the upper and lower templates to realize the guiding function of vertical lifting and ensure the relative accuracy of mold closing. In addition, the heating rod is embedded in the upper bending block and the bending edge stop strip. Since the upper bending block and the bending edge stop strip are made of metal, the bending deformation of PET is prevented through metal heat conduction, thereby effectively avoiding product rebound.

[0035] Furthermore, the surfaces of the mold that come into contact with the PET product are coated with a Teflon coating, which can effectively prevent scratches from forming on the PET surface during bending.

[0036] The PET automatic bending machine disclosed in this utility model can effectively realize the bending process of PET products, and the automatic loading and unloading can effectively improve the processing efficiency. At the same time, the conductive heating can improve the plasticity of PET and effectively prevent the product from rebounding.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the utility model's technical solution.

Claims

1. An automatic PET bending machine, characterized in that: The device includes a cabinet, a feeding assembly, a bending assembly, a discharging assembly, and a handling assembly mounted on the cabinet. The feeding assembly and the discharging assembly are located on opposite sides of the bending assembly. The handling assembly enables the switching of PET products between feeding, bending, and discharging. The bending assembly includes a mounting base, a bending die mounted in the mounting base, a pressing cylinder mounted above the mounting base to drive the bending die to rise and fall, and a heating rod embedded in the bending die for heating and shaping after bending.

2. The PET automatic bending machine according to claim 1, characterized in that: The feeding assembly includes a base plate, a side plate, a lifting platform, and a lifting drive component. The base plate is mounted on the cabinet, and the lifting platform is placed on the base plate. Lifting control is achieved through the lifting drive component located below the base plate. Multiple limit posts are provided on the base plate around the lifting platform. The side plate is vertically mounted on one side of the base plate, and a detection sensor is provided at the upper end of the side plate.

3. The PET automatic bending machine according to claim 1, characterized in that: The feeding assembly includes a transverse base and multiple material cylinders disposed on the transverse base. The transverse base is fixed to the cabinet in conjunction with a linear slide rail and a transverse cylinder. The transverse base is controlled to move laterally along the linear slide rail by the transverse cylinder.

4. The PET automatic bending machine according to claim 1, characterized in that: The conveying assembly includes a lead screw module, a linear guide, a sliding plate, a cylinder mounting base, a slide cylinder, and a suction cup assembly. The sliding plate is mounted on the linear guide and its back-and-forth sliding on the linear guide is controlled by the lead screw module. There are two sets of cylinder mounting bases, which are installed at both ends of the sliding plate. The slide cylinder is assembled on the vertical surface of the cylinder mounting base, and the suction cup assembly is fixed on the slider of the slide cylinder.

5. The PET automatic bending machine according to claim 4, characterized in that: The suction cup assembly has a cross-shaped suction cup mounting bracket and multiple vacuum suction cups. The suction cup mounting bracket is assembled into a cross structure by two mounting strips and bolts. The mounting strips have strip-shaped holes, and the vacuum suction cups are assembled in the strip-shaped holes. The installation position can be adjusted at will according to the requirements.

6. The PET automatic bending machine according to claim 1, characterized in that: The bending die includes an upper template, a lower template, an upper bending pressure block, a bending floating block, a pad, two sets of bending edge guards, and a spring. The lower template is located on the bottom surface of the mounting base. The two sets of bending edge guards are arranged parallel to each other on the surface of the lower template. The bending floating block is located below the pad and the spring on the surface of the lower template. The two sets of bending floating blocks are located on both sides of the bending edge guards, forming a square bending area with the two sets of bending edge guards. The surface of the lower template in the square bending area is provided with multiple positioning pins. A heating rod is embedded in the bending edge guard. The upper bending pressure block is fixed to the back of the upper template, and a heating rod is also embedded in the upper bending pressure block. The pressing cylinder is located at the top of the mounting base, and its telescopic end passes through the mounting base and is fixed to the upper template. The pressing cylinder controls the upper template to move the upper bending pressure block downward.

7. The PET automatic bending machine according to claim 6, characterized in that: The upper template and the lower template are also provided with guide pillars and guide sleeves.

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