Bending tool for plastic plate

Abstract

The utility model relates to the field of bending forming mechanisms, in particular to a plastic plate bending tool which comprises a heating mechanism and a forming mechanism, the heating mechanism comprises a supporting assembly and a heating assembly, a heating space is arranged in the supporting assembly, the heating assembly is arranged in the heating space, and a supporting platform is arranged on the top face of the supporting assembly; the forming mechanism comprises a forming block and a push plate assembly, one side of the forming block is provided with an inwards-sunken forming groove, the push plate assembly comprises a driving unit and a push plate in driving connection with the driving unit, the driving unit drives the push plate to move towards the forming block, and a plastic plate is placed on the supporting platform. The heating assembly heats the middle of the plastic plate, so that the two sides of the plastic plate are tilted, and the hardness of the plastic plate is reduced; and the heated plastic plate is placed in the forming groove, the driving unit drives the push plate to move towards the forming groove, the two ends of the plastic plate are pushed to completely enter the forming groove, and pressure maintaining forming is conducted on the plastic plate.

Description

Technical Field

[0001] The utility model relates to the field of bending and forming mechanisms, in particular to a bending tool for a plastic plate. Background Art

[0002] A plastic bending mechanism is a processing device designed specifically for plastic sheet materials, designed to achieve bending and forming of the sheet materials through precise control. The mechanism integrates a sturdy body and workbench to ensure stability and accuracy during processing. The workbench is equipped with an advanced clamping device that can firmly fix the plastic sheet to be processed, preventing it from moving or deforming during the bending process. With its efficient and precise processing capabilities, the plastic bending mechanism plays an important role in many fields, including furniture manufacturing, automotive parts production, and architectural decoration. Whether it is complex curved shapes or fine bending angles, the mechanism can easily handle them, meeting the diverse needs of different industries for plastic sheet products. As technology continues to advance, the plastic bending mechanism will continue to upgrade, bringing more innovations and breakthroughs to the plastics processing industry.

[0003] For example, the application number is CN202020726407.3, and the name is a utility model patent for a plastic plate hot pressing and bending equipment. It uses a hot pressing mechanism to hot press the plastic plate, and uses a bending mechanism to bend the plastic plate 90 degrees, but it cannot meet the demand for "U"-shaped bending of the plastic plate. Utility Model Content

[0004] The purpose of the utility model is to provide a bending tool for plastic plates, aiming to improve the problem that most conventional bending mechanisms can only perform 90-degree bending and cannot meet the requirements of "U"-shaped arc bending of plastic plates.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A plastic plate bending tool, comprising a heating mechanism and a forming mechanism,

[0007] The heating mechanism includes a support assembly and a heating assembly. The support assembly has a built-in heating space. The heating assembly is arranged in the heating space. The top surface of the support assembly is a support platform. The support platform is used to place the plastic plate. The plastic plate cover is arranged on the heating space.

[0008] The forming mechanism is arranged on one side of the heating mechanism, and the forming mechanism includes a forming block and a push plate assembly. One side of the forming block is provided with an inwardly recessed forming groove, and the push plate assembly is arranged at the notch of the forming groove. The push plate assembly includes a driving unit and a push plate driven by the driving unit, and the driving unit drives the push plate to move toward the forming block.

[0009] Furthermore, the support assembly includes a first support unit and a second support unit.

[0010] The top surface of the first support unit is a first support platform; the top surface of the second support unit is a second support platform; and the horizontal height of the second support platform is greater than the horizontal height of the first support platform.

[0011] Furthermore, a first limiting member is fixed on the first supporting platform. The first limiting member is symmetrically distributed on both sides of the heating component. The first limiting member and the side edge of the plastic plate are pressed against each other.

[0012] Furthermore, a second limiting assembly is fixed on the second supporting platform, and the second limiting assembly includes limiting vertical rods, and the limiting vertical rods are distributed on both sides of the heating assembly.

[0013] The limiting vertical poles are provided with strip-shaped adjustment channels extending in the vertical direction. The limiting pressure rods are inserted between the limiting vertical poles, and both ends of the limiting pressure rods extend outward through the adjustment channels.

[0014] Furthermore, both ends of the limiting pressure rod are detachably connected to limiting blocks, and the width of the limiting blocks is greater than the opening width of the strip-shaped adjustment channel.

[0015] Furthermore, the first support platform is provided with a plurality of mounting hole groups, and the plurality of mounting hole groups are sequentially spaced apart along the width direction of the first support platform;

[0016] The first limiting member is located on a group of mounting holes and is detachably fixedly connected to the first supporting unit through the mounting holes.

[0017] Furthermore, the support assembly includes a containing box and two supporting plates, the heating assembly is fixed in the containing box, the opposite sides of the two supporting plates are respectively fixed at the two ends of the top opening of the containing box, and the top surfaces of the supporting plates are located on the same horizontal plane to form the supporting platform.

[0018] Furthermore, mounting grooves are provided on opposite sides of the support plate, and the extending direction of the mounting grooves is the same as the length direction of the support plate;

[0019] A water inlet pipe and a water outlet pipe are respectively fixed in the mounting grooves of the two supporting plates, and one ends of the water inlet pipe and the water outlet pipe are communicated with each other.

[0020] Furthermore, the driving unit includes a driving base, a driving rod, a connecting arm and a push rod, wherein the bottom of the driving rod is bent outward and hinged to the driving base; one end of the connecting arm is hinged to the bottom of the driving rod, and the other end of the connecting arm is hinged to one end of the push rod;

[0021] A guide cylinder is fixed on the base, and the other end of the push rod passes through the guide cylinder and is fixedly connected to the push plate.

[0022] Furthermore, it also includes a bending frame, the heating mechanism is fixed on the bending frame, the forming mechanism is detachably arranged on the bending frame by bolts, and a universal wheel is fixed to the bottom of the bending frame.

[0023] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0024] The plastic plate is placed on the supporting platform, with the middle of the plastic plate corresponding to the position of the heating space. The heating component heats the middle of the plastic plate, causing the two sides of the plastic plate to warp and the hardness of the plastic plate to decrease. The heated plastic plate is placed in the molding groove, with both ends of the plastic plate extending out of the groove. The driving unit drives the push plate to move toward the molding groove, pushing the two ends of the plastic plate completely into the molding groove, and performing pressure-maintaining molding on the plastic plate. Specifically, the shape of the molding groove is "U"-shaped, realizing "U"-shaped bending molding of the plastic plate. Furthermore, the molding groove can be set to other shapes to meet different bending requirements, with good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the bending tool for the plastic plate of the present invention;

[0026] Figure 2 This is a partial structural diagram of the bending tool for the plastic plate of the utility model;

[0027] Figure 3 This is an enlarged schematic diagram of the structure of part A of the bending tool for plastic plates of the present invention;

[0028] Figure 4 This is a schematic diagram of the supporting plate structure of the plastic plate bending tooling of the present invention;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the water inlet pipe of the plastic plate bending tooling of the utility model.

[0030] Description of reference numerals:

[0031] 1. Heating mechanism; 11. Support assembly; 111. First support unit; 1111. First support platform; 1112. Support plate; 1113. Accommodation box; 1114. Mounting slot; 1115. Height adjustment channel; 1116. Mounting hole; 112. Second support unit; 1121. Second support platform; 12. Heating assembly; 121. Heating wire; 13. First stopper; 131. Stopper rod; 14. Second stopper; 141. Stopper pole; 1411. Strip adjustment channel; 1412. Support foot; 142. Stopper pressure rod; 143. Stopper block;

[0032] 2. Molding mechanism; 21. Molding block; 211. Molding groove; 22. Push plate assembly; 221. Push plate; 222. Drive unit; 2221. Drive base; 2222. Drive rod; 2223. Connecting arm; 2224. Push rod; 2225. Guide cylinder; 23. Spacer;

[0033] 3. Bending frame; 31. Universal wheel;

[0034] 4. Water inlet pipe; 5. Water outlet pipe. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] In addition, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] When an element is referred to as being “fixed to,” “disposed on,” or “provided on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] Unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the utility model based on specific circumstances.

[0039] Example

[0040] Please refer to Figure 1-5 As shown, this embodiment provides a bending tool for a plastic plate, including a heating mechanism 1 and a forming mechanism 2. The heating mechanism 1 includes a support assembly 11 and a heating assembly 12. The support assembly 11 has a built-in heating space, and the heating assembly 12 is arranged in the heating space. The top surface of the support assembly 11 is a support platform, and the support platform is for placing the plastic plate, and the plastic plate cover is arranged on the heating space. The forming mechanism 2 is arranged on one side of the heating mechanism 1. The forming mechanism 2 includes a forming block 21 and a push plate assembly 22. One side of the forming block 21 is provided with an inwardly recessed forming groove 211. The push plate assembly 22 is arranged at the notch of the forming groove 211. The push plate assembly 22 includes a driving unit 222 and a push plate 221 connected to the driving unit 222. The driving unit 222 drives the push plate 221 to move toward the forming block 21.

[0041] The plastic plate is placed on the supporting platform, and the middle of the plastic plate corresponds to the position of the heating space. The heating component 12 heats the middle of the plastic plate, causing the two sides of the plastic plate to warp and reduce the hardness of the plastic plate; the heated plastic plate is placed in the forming groove 211, and the two ends of the plastic plate extend out of the groove. The driving unit 222 drives the push plate 221 to move toward the forming groove 211, pushing the two ends of the plastic plate completely into the forming groove 211, and performing pressure-maintaining molding on the plastic plate. Specifically, the shape of the forming groove 211 is "U"-shaped, realizing "U"-shaped bending molding of the plastic plate. Furthermore, the forming groove 211 can be set to other shapes to meet different bending requirements and has good adaptability.

[0042] Please refer to Figure 1 and Figure 2As shown, the support assembly 11 includes a first support unit 111 and a second support unit 112. In this embodiment, the first support unit 111 and the second support unit 112 are arranged in sequence in the length direction thereof. The top surface of the first support unit 111 is a first support platform 1111; the top surface of the second support unit 112 is a second support platform 1121; the horizontal height of the second support platform 1121 is greater than the horizontal height of the first support platform 1111. Support units of different heights are provided, and the plastic plate is first heated for the first time on the first support platform 1111 with a lower height. Since the height of the first support platform 1111 is lower, the central area of ​​the plastic plate can be better heated, and a good heating and softening effect is achieved. However, during the first heating process, when the upward curvature of the two sides of the plastic plate reaches the maximum value, the heating effect of the heating assembly 12 on the plastic plate is reduced. At this time, the plastic plate is placed on the second support platform 1121 for a second heating. The higher second support platform 1121 is used to further heat both sides of the plastic plate. As the second heating time increases, the height of the softened and bent area in the middle of the plastic plate increases, so that the edges on both sides of the plastic plate move further into the heating space for heating by the heating component 12, thereby achieving heating and softening over a larger range and having a good heating and softening effect.

[0043] Furthermore, the first support unit 111 and the second support unit 112 can be set as two relatively arranged "L"-shaped support plates, and the vertical plate of the "L"-shaped support plate raises the horizontal plate to achieve the setting of the first support platform 1111 and the second support platform 1121 at different heights. Similarly, two relatively arranged support frames can be set, and a horizontal plate is set at the top of the support frame. By setting support frames at different heights, the first support platform 1111 and the second support platform 1121 at different heights can be achieved.

[0044] Please refer to Figure 1 and Figure 2As shown, specifically, in this embodiment, the support assembly 11 includes a receiving box 1113 and two supporting plates 1112. That is, both the first support unit 111 and the second support unit 112 include a receiving box 1113 and two supporting plates 1112. The heating assembly 12 is fixed within the receiving box 1113. The opposing sides of the two supporting plates 1112 are respectively fixed to the ends of the top opening of the receiving box 1113. The top surfaces of the supporting plates 1112 are located on the same horizontal plane, forming a support platform. That is, the height of the receiving box 1113 of the first support unit 111 is smaller than that of the receiving box 1113 of the second support unit 112. In this embodiment, the heating assembly 12 comprises multiple heating wires 121. The heating wires 121 sequentially pass through the receiving boxes 1113 of the first support unit 111 and the second support unit 112. The multiple heating wires 121 are arranged side by side. The extending direction of the heating wires 121 is the same as the length direction of the first support unit 111 and the second support unit 112. The plastic sheet is heated using energized heating wires 121, which are arranged in parallel to ensure uniform heating of the plastic sheet. Specifically, the receiving box 1113 of the first support unit 111 and the receiving box 1113 of the second support unit 112 abut against each other at one end, reducing the length of the heating wires 121, reducing material usage, and lowering costs.

[0045] Please refer to Figure 4 As shown, in this embodiment, mounting slots 1114 are defined on opposing sides of support plates 1112. Mounting slots 1114 extend in the same direction as the length of support plates 1112. A water inlet pipe 4 and a water outlet pipe 5 are secured within the mounting slots 1114 of the two support plates 1112, respectively. One end of the water inlet pipe 4 and the water outlet pipe 5 are interconnected. Cooling water circulates within the water inlet pipe 4 and the water outlet pipe 5, lowering the temperature of the support plates 1112. This prevents the support plates 1112 from heating up over time, causing them to directly heat both sides of the plastic sheet and affect the overall heating and softening effect of the plastic sheet.

[0046] Please refer to Figure 1 and Figure 2 As shown, in this embodiment, a height adjustment channel 1115 is provided on the receiving box 1113, extending vertically. The heating wire 121 passes through the height adjustment channel 1115 to enter or exit the receiving box 1113. Height adjustment channel 1115 allows the height of the heating wire 121 to be adjusted, bringing the heating wire 121 closer to the plastic sheet during the initial heating process, thereby improving the heating and softening effect. Furthermore, as the heating time increases, the height of the heating wire 121 can be lowered to heat a wider range of the plastic sheet.

[0047] In this embodiment, first stoppers 13 are fixed to the first support platform 1111. These stoppers 13 are symmetrically located on either side of the heating assembly 12, abutting against the sides of the plastic sheet. Specifically, the first stoppers 13 are stopper rods 131, which extend along the length of the receiving box 1113 and position the sides of the plastic sheet, ensuring a more precise placement of the plastic sheet and enabling accurate initial heating of the center portion of the plastic sheet.

[0048] In this embodiment, the first support platform 1111 is provided with multiple groups of mounting holes, spaced apart in sequence along the width of the first support platform 1111. Specifically, there are four groups of mounting holes, each of which includes two mounting holes 1116. The first stopper 13 is positioned on one of the mounting hole groups and is removably fixedly connected to the first support unit 111 via the mounting hole groups. Specifically, the first stopper 13 is removably connected to the first support unit 111 via bolts and the mounting hole groups. Each mounting hole group has two mounting holes 1116, effectively ensuring the accuracy of the extension direction of the stopper rod 131.

[0049] In this embodiment, a second limiting assembly is fixed to the second support platform 1121. The second limiting assembly includes limiting uprights 141, which are located on both sides of the heating assembly 12. Each limiting upright 141 defines a vertically extending strip-shaped adjustment channel 1411. A limiting pressure rod 142 is inserted between the limiting uprights 141, with both ends of the limiting pressure rod 142 extending outward through the adjustment channel. The limiting uprights 141 support the limiting pressure rod 142, which moves up and down within the strip-shaped limiting channel. After the first heating, the two sides of the plastic plate tilt upwards, and the limiting pressure rods 142 are pressed from top to bottom on the two sides of the plastic plate. When one side of the plastic plate deflects, the height of the side at that location is higher, and the limiting pressure rods 142 first contact the side at that location, applying downward pressure to it, causing the plastic plate to deflect until both sides contact the limiting pressure rods 142 at the same time, completing the adjustment of the position of the plastic plate, so that the plastic plate is more accurately positioned on the second support platform 1121, and can evenly heat both sides of the plastic plate to prevent one side from softening more than the other side, which would affect the subsequent pressure-maintaining molding. In this embodiment, the bottom end of the limiting vertical rod 141 is provided with support legs 1412 extending outward at an angle on both sides. The bottom ends of the support legs 1412 are mutually abutted with the second support platform 1121 and fixedly connected by bolts. The two support legs 1412 support the limiting vertical rod 141, ensuring that the limiting vertical rod 141 has good stability. In this embodiment, the second support platform 1121 is also provided with multiple groups of mounting holes, which are sequentially spaced apart along the width of the second support platform 1121. Specifically, there are four groups of mounting holes on the second support platform 1121, each of which includes three mounting holes 1116. These are used to adjust the mounting position of the position-limiting vertical rod 141 to accommodate plastic panels of different sizes. The position-limiting pressure rod 142 is a telescopic rod.

[0050] Specifically, the two ends of the limiting pressure rod 142 are detachably connected to the limiting blocks 143, and the width of the limiting blocks 143 is greater than the opening width of the strip-shaped adjustment channel 1411. The limiting blocks 143 limit the ends of the limiting pressure rod 142 to prevent the ends of the limiting pressure rod 142 from separating from some of the limiting vertical rods 141, causing them to fall off and affect the second heating process. Similarly, the limiting blocks 143 can be set as strip-shaped limiting blocks 143. By rotating the limiting pressure rod 142, the extension direction of the strip-shaped limiting blocks 143 is the same as or perpendicular to the extension direction of the strip-shaped adjustment channel 1411, thereby realizing the disassembly and limitation of the limiting pressure rod 142. In this embodiment, the limiting blocks 143 are nuts, and the two ends of the limiting pressure rod 142 are provided with external threads. The nuts are threadedly connected to the limiting pressure rod 142 to realize the end limitation of the limiting pressure rod 142.

[0051] Please refer to Figure 3As shown, in this embodiment, the drive unit 222 includes a drive base 2221, a drive rod 2222, a connecting arm 2223, and a push rod 2224. The bottom of the drive rod 2222 is bent outward and hinged to the drive base 2221. One end of the connecting arm 2223 is hinged to the bottom of the drive rod 2222, and the other end of the connecting arm 2223 is hinged to one end of the push rod 2224. A guide cylinder 2225 is fixed to the base, and the other end of the push rod 2224 passes through the guide cylinder 2225 and is fixedly connected to the push plate 221. The driving rod 2222 is hinged at its bottom end to the driving base 2221 to achieve its own movement toward or away from the push plate 221; the two ends of the connecting arm 2223 are respectively hinged to the push rod 2224 and the driving rod 2222. The driving rod 2222 drives the push rod 2224 forward or backward through the connecting arm 2223, thereby achieving mutual contact or separation between the forming block 21. Furthermore, a pad 23 is fixed to the bottom of the driving base 2221. The pad 23 raises the driving unit 222 so that the other end of the push rod 2224 can be connected to the center position of the pushing plate 221, exerting a horizontal force on the pushing plate 221 in the direction of the forming block 21, ensuring that the pushing plate 221 can accurately contact the forming block 21 and improving the pressure-retaining forming effect.

[0052] Please refer to Figure 1 As shown, in this embodiment, the bending tool further includes a bending frame 3, the heating mechanism 1 is fixed to the bending frame 3, and the forming mechanism 2 is detachably mounted on the bending frame 3 by bolts, that is, the forming block 21 is detachably mounted on the bending frame 3 by bolts. The detachable forming block 21 is provided, and a forming block 21 with a specific shape of forming groove 211 is used according to the bending requirements to meet different bending requirements, thereby having good practicality. Furthermore, a universal wheel 31 is fixed to the bottom of the bending frame 3, and the universal wheel 31 improves the flexibility of the bending tool.

[0053] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A plastic plate bending tool, characterized in that: Including heating mechanism and forming mechanism, The heating mechanism includes a support assembly and a heating assembly. The support assembly has a built-in heating space. The heating assembly is arranged in the heating space. The top surface of the support assembly is a support platform. The support platform is used to place the plastic plate. The plastic plate cover is arranged on the heating space. The forming mechanism is arranged on one side of the heating mechanism, and the forming mechanism includes a forming block and a push plate assembly. One side of the forming block is provided with an inwardly recessed forming groove, and the push plate assembly is arranged at the notch of the forming groove. The push plate assembly includes a driving unit and a push plate driven by the driving unit, and the driving unit drives the push plate to move toward the forming block.

2. The plastic plate bending tool according to claim 1, characterized in that: The support assembly includes a first support unit and a second support unit, The top surface of the first support unit is a first support platform; the top surface of the second support unit is a second support platform; and the horizontal height of the second support platform is greater than the horizontal height of the first support platform.

3. The plastic plate bending tool according to claim 2, characterized in that: A first limiting member is fixed on the first supporting platform. The first limiting member is symmetrically distributed on both sides of the heating component. The first limiting member and the side edge of the plastic plate are pressed against each other.

4. The plastic plate bending tool according to claim 2, characterized in that: A second limiting assembly is fixed on the second supporting platform. The second limiting assembly includes limiting vertical rods. The limiting vertical rods are distributed on both sides of the heating assembly. The limiting vertical poles are provided with strip-shaped adjustment channels extending in the vertical direction. The limiting pressure rods are inserted between the limiting vertical poles, and both ends of the limiting pressure rods extend outward through the adjustment channels.

5. The plastic plate bending tool according to claim 4, characterized in that: Both ends of the limiting pressure rod are detachably connected to the limiting blocks, and the width of the limiting blocks is greater than the opening width of the strip-shaped adjustment channel.

6. The plastic plate bending tool according to claim 3, characterized in that: The first support platform is provided with a plurality of mounting hole groups, and the plurality of mounting hole groups are sequentially spaced apart along the width direction of the first support platform; The first limiting member is located on a group of mounting holes and is detachably fixedly connected to the first supporting unit through the mounting holes.

7. The plastic plate bending tool according to claim 1, characterized in that: The support assembly includes a accommodating box and two support plates. The heating assembly is fixed in the accommodating box. The opposite sides of the two support plates are respectively fixed at the two ends of the top opening of the accommodating box. The top surfaces of the support plates are located on the same horizontal plane to form the support platform.

8. The plastic plate bending tool according to claim 7, characterized in that: The supporting plate is provided with mounting grooves on opposite sides thereof, and the extending direction of the mounting grooves is the same as the length direction of the supporting plate; A water inlet pipe and a water outlet pipe are respectively fixed in the mounting grooves of the two supporting plates, and one ends of the water inlet pipe and the water outlet pipe are communicated with each other.

9. The plastic plate bending tool according to claim 1, characterized in that: The driving unit includes a driving base, a driving rod, a connecting arm and a push rod. The bottom of the driving rod is bent outward and hinged to the driving base. One end of the connecting arm is hinged to the bottom of the driving rod, and the other end of the connecting arm is hinged to one end of the push rod. A guide cylinder is fixed on the base, and the other end of the push rod passes through the guide cylinder and is fixedly connected to the push plate.

10. The plastic plate bending tool according to claim 1, characterized in that: It also includes a bending frame, the heating mechanism is fixed on the bending frame, the forming mechanism is detachably arranged on the bending frame through bolts, and a universal wheel is fixed on the bottom of the bending frame.

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