Plastic sheet bending device

Abstract

The utility model belongs to the technical field of plastic plate processing, and specifically discloses a plastic plate bending device, comprising: a placing table, a centering positioning device and a locking device are installed on the top of the placing table, one end of the placing table is fixedly connected with a bending electric push rod, and the top of the bending electric push rod is slidably connected with a placing plate hinged to the placing table; a processing device, the processing device is installed on the surface of the placing plate, and one end of the processing device penetrates to the outside of the placing plate; an air cooler can cool down the two sides of the heated part of the plastic plate more accurately through two air ducts, which can not only improve the cooling and shaping rate of the plastic plate, thereby shortening the time consumed by the entire bending operation, but also reduce the cooling burden of the air cooler to achieve the purpose of energy saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic plate processing, and in particular relates to a plastic plate bending device. Background Art

[0002] Plastic board is a kind of plastic product, it is made of plastic, with the characteristics of light weight, high strength, water resistance, moisture resistance, corrosion resistance, chemical corrosion resistance, sound insulation, heat preservation, light weight, environmental protection, easy processing, etc. Therefore, it is widely used in construction, chemical, electrical, environmental protection, packaging, agriculture, food and other industries.

[0003] After searching, a Chinese patent discloses a sheet metal bending machine that is easy to fix (publication number CN213055968U). This patented technology can automatically and effectively bend plastic sheets. However, since the cooling structures are all arranged on one side of the heating device, the cooling structure needs to pass through the heating device to cool the plastic sheet after hot bending, which will undoubtedly reduce the cooling efficiency of the cooling structure. Therefore, a person skilled in the art provides a plastic sheet bending device to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a plastic plate bending device.

[0005] In order to achieve the above purpose, the utility model provides a plastic sheet bending device, including: a placing table, a centering positioning device and a locking device are installed on the top of the placing table, one end of the placing table is fixedly connected to a bending electric push rod, and the top of the bending electric push rod is slidably connected to a placing plate hinged to the placing table; a processing device, the processing device is installed on the surface of the placing plate, and one end of the processing device passes through the outside of the placing plate.

[0006] In the above technical solution, further, a mounting groove is opened at the top of the placement plate, and the processing device includes a cold air fan and a rotating mechanism. The cold air fan is fixedly connected to one end of the placement plate, and the air outlet end of the cold air fan is fixedly connected and connected to two air ducts. The upper air duct is arranged above the mounting groove, and one end of the lower air duct passes through the placement plate and is connected to the mounting groove. The rotating mechanism is rotatably connected to the inside of the mounting groove, and one end of the rotating mechanism passes through the mounting groove and extends to the outside of the placement plate. The top of the rotating mechanism is fixedly connected to a heating rod flush with the opening of the mounting groove.

[0007] In the above technical solution, further, the axis lines of the two wind tubes and the center point of the heating rod are arranged on the same vertical plane, and the angle line between the two wind tube openings intersects with the top of the heating rod.

[0008] In the above technical solution, further, a ventilation hole connected to the installation groove is opened at the other end of the placement plate, and the ventilation hole and the air duct below are arranged at the same height.

[0009] In the above technical solution, further, the rotating mechanism includes a pivot plate, the pivot plate is rotatably connected to the inside of the mounting groove, the heating rod is fixedly connected to the top of the pivot plate, the pivot plate is arranged below the wind tube below, one end of the pivot plate passes through the mounting groove and extends to the outside of the placement plate, and one end of the pivot plate is fixedly connected to a crank.

[0010] In the above technical solution, further, the other end of the placement plate is provided with two positioning grooves symmetrically distributed on both sides of the rotating shaft plate, the inner side of the crank is slidably connected with a turning handle, both ends of the turning handle pass through the outside of the crank, and one end of the turning handle is plugged into the adjacent positioning groove.

[0011] In the above technical solution, further, a rubber spring is provided on the surface of the turning handle, and the rubber spring is fixedly connected between the crank and the turning handle, and the rubber spring is always in a compressed state.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The air cooler can cool down the two sides of the heated part of the plastic sheet more accurately through two air ducts, which can not only increase the cooling and shaping rate of the plastic sheet, thereby shortening the time consumed by the entire bending operation, but also reduce the cooling burden of the air cooler, so as to achieve the purpose of energy saving;

[0014] 2. The design of a rotating heating rod is adopted. When the heating rod is rotated to the side of the rotating shaft plate away from the air duct, the rotating shaft plate can also block the airflow blown from the air duct. This can not only reduce the rate of increase of the airflow temperature, so that the airflow can quickly cool the plastic sheet, but also reduce the rate of decrease of the heating rod temperature, so that the heating rod can still maintain a high temperature during the next heating operation, thereby reducing the operating power consumption of the heating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a plastic sheet bending device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the connection between a placing plate and a processing device in a plastic plate bending device proposed by the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of a placement plate and a processing device in a plastic plate bending device proposed by the utility model;

[0018] Figure 4 The utility model is a partially cut structural schematic diagram of a placing table and a rotating mechanism in a plastic plate bending device.

[0019] In the figure: 1. placing table; 2. centering positioning device; 3. locking device; 4. bending electric push rod; 5. placing plate; 51. mounting slot; 52. vent; 53. positioning slot; 6. processing device; 61. air cooler; 62. air cylinder; 63. heating rod; 64. rotating mechanism; 641. shaft plate; 642. crank; 643. turning handle; 644. rubber spring. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1 - Figure 4 A plastic sheet bending device shown in the figure comprises: a placing table 1, a centering positioning device 2 and a locking device 3 are installed on the top of the placing table 1, one end of the placing table 1 is fixedly connected to a bending electric push rod 4, and the top of the bending electric push rod 4 is slidably connected to a placing plate 5 hinged to the placing table 1; a processing device 6, the processing device 6 is installed on the surface of the placing plate 5, and one end of the processing device 6 penetrates to the outside of the placing plate 5;

[0022] It should be noted that a slide groove is provided on the top of the placement table 1, and the centering positioning device 2 includes a bidirectional lead screw rotatably connected to the inside of the slide groove, one end of the bidirectional lead screw is fixedly connected to a servo motor fixedly connected to the placement table 1, and two opposite threads on the surface of the bidirectional lead screw are threadedly connected to a spring telescopic rod slidably connected to the slide groove. When the staff places two plates on the top of the placement table 1 and sets them between the two spring telescopic rods, the staff only needs to manually control the servo motor to rotate in the corresponding direction, and the servo motor drives the bidirectional lead screw to rotate. The bidirectional lead screw synchronously drives the two spring telescopic rods to move toward each other along the slide groove through two opposite threads on the surface until the two spring telescopic rods cooperate to clamp the two sides of the plastic plate in the center; the locking device 3 includes a gantry fixedly connected to the top of the placement table 1, and the top of the gantry is fixedly connected to an electric hydraulic cylinder, the output end of the electric hydraulic cylinder passes through the inner side of the gantry, and the output end of the electric hydraulic cylinder is fixedly connected to a pressure plate. When the staff needs to lock the plastic plate, the staff only needs to manually control the extension of the electric hydraulic cylinder, and the electric hydraulic cylinder drives the pressure plate to move down until the pressure plate presses the plastic plate on the top of the placement table 1.

[0023] A mounting groove 51 is provided at the top of the placement plate 5, and the processing device 6 includes a cold air fan 61 and a rotating mechanism 64. The cold air fan 61 is fixedly connected to one end of the placement plate 5, and the air outlet end of the cold air fan 61 is fixedly connected and connected to two air ducts 62. The upper air duct 62 is arranged above the mounting groove 51, and one end of the lower air duct 62 penetrates the placement plate 5 and is connected to the mounting groove 51. The rotating mechanism 64 is rotatably connected to the inside of the mounting groove 51, and one end of the rotating mechanism 64 penetrates the mounting groove 51 and extends to the outside of the placement plate 5. The top of the rotating mechanism 64 is fixedly connected to a rotating mechanism 64 that is flush with the opening of the mounting groove 51. The heating rod 63; the axis lines of the two wind tubes 62 and the center points of the heating rods 63 are arranged on the same vertical plane, and the angle line between the openings of the two wind tubes 62 intersects with the top of the heating rod 63, which can ensure that the two wind tubes 62 can more accurately guide the airflow to the part of the plastic sheet heated by the heating rods 63, so that the cooling operation is more accurate; the other end of the placement plate 5 is provided with a vent 52 connected to the mounting groove 51, and the vent 52 and the lower wind tube 62 are arranged at the same height, which can reduce the resistance of the lower airflow through the mounting groove 51 to ensure that the lower cooling airflow can circulate normally.

[0024] The rotating mechanism 64 includes a rotating shaft plate 641, which is rotatably connected to the inside of the installation groove 51, and the heating rod 63 is fixedly connected to the top of the rotating shaft plate 641. The rotating shaft plate 641 is arranged below the lower wind tube 62, and one end of the rotating shaft plate 641 passes through the installation groove 51 and extends to the outside of the placement plate 5. One end of the rotating shaft plate 641 is fixedly connected to a crank 642; the other end of the placement plate 5 is provided with two positioning grooves 53 symmetrically distributed on both sides of the rotating shaft plate 641, and the inner side of the crank 642 is slidably connected to a turning handle 643, and the turning handle 642 is slidably connected to the inner side of the crank 642. Both ends of the crank handle 642 are penetrated to the outside of the crank handle 643, and one end of the turning handle 643 is plugged into the adjacent positioning groove 53, which can make the heating rod 63 more stable after rotation, so as to ensure that the heating rod 63 can operate normally or be hidden; the surface of the turning handle 643 is sleeved with a rubber spring 644, and the rubber spring 644 is fixedly connected between the crank handle 642 and the turning handle 643. The rubber spring 644 is always in a compressed state, which can improve the connection strength between the turning handle 643 and the positioning groove 53, thereby improving the stability of the angle locking of the rotating shaft plate 641;

[0025] When the staff needs to rotate the pivot plate 641, the staff needs to first pull out the turning handle 643 from the positioning groove 53 connected to it, and then rotate the crank 642 through the turning handle 643, and the crank 642 drives the pivot plate 641 to rotate. When the pivot plate 641 rotates one hundred and eighty degrees, the turning handle 643 is just aligned with another positioning groove 53, and the staff can insert the turning handle 643 into the positioning groove 53, so that the pivot plate 641 is locked at this angle. This operation can not only make the heating rod 63 more stable during normal operation, but also when the heating rod 63 is rotated to the side of the rotating shaft plate 641 away from the wind tube 62, the rotating shaft plate 641 can also block the airflow blown from the wind tube 62, which can not only reduce the rate of increase of the airflow temperature, so that the airflow can quickly cool the plastic plate, but also reduce the rate of decrease of the temperature of the heating rod 63, so that the heating rod 63 still maintains a high temperature during the next heating operation, thereby reducing the operating power consumption of the heating rod 63.

[0026] Working principle: When the staff needs to heat-bend the fixed plastic sheet, the staff first manually turns on the heating rod 63, and the heating rod 63 heats the part of the plastic sheet in contact with it. When the part of the plastic sheet is heated to the specified temperature, the staff can manually start and control the bending electric push rod 4 to extend to the specified length, and the bending electric push rod 4 drives the placement plate 5 to rotate along the placement table 1 to the specified angle, and the placement plate 5 drives the plastic sheet to bend until the plastic sheet is bent to the specified angle;

[0027] When the bending work of the plastic sheet is completed, the staff first rotates the rotating shaft plate 641, and the rotating shaft plate 641 drives the heating rod 63 to rotate to the side facing away from the lower wind tube 62. Then the staff can turn on the cold air fan 61, and the cold air fan 61 simultaneously conveys the cold air flow into the two wind tubes 62. At this time, the two wind tubes 62 simultaneously guide the cold air flow to the two sides of the heated part of the plastic sheet. At this time, the cold air flow quickly reduces the temperature of the heated part of the plastic sheet during the circulation process, so that the plastic sheet is quickly cooled and shaped. Compared with the existing large-area heat dissipation method, the cold air fan 61 can cool down the two sides of the heated part of the plastic sheet more accurately through the two wind tubes 62. This not only can increase the cooling and shaping rate of the plastic sheet, thereby shortening the time consumed in the entire bending operation, but also can reduce the cooling burden of the cold air fan 61, so as to achieve the purpose of energy saving.

[0028] It should be noted that the bidirectional screw, servo motor, electric hydraulic cylinder, bending electric push rod 4, air cooler 61 and heating rod 63 in the above description are all devices with relatively mature application of existing technology. The specific models can be selected according to actual needs. At the same time, the servo motor, electric hydraulic cylinder, bending electric push rod 4, air cooler 61 and heating rod 63 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A plastic sheet bending device, characterized in that: include: A placement table (1), wherein a centering positioning device (2) and a locking device (3) are installed on the top of the placement table (1); one end of the placement table (1) is fixedly connected to a bent electric push rod (4); the top of the bent electric push rod (4) is slidably connected to a placement plate (5) hinged to the placement table (1); A processing device (6), wherein the processing device (6) is mounted on the surface of the placement plate (5), and one end of the processing device (6) penetrates to the outside of the placement plate (5); The top of the placement plate (5) is provided with a mounting groove (51), and the processing device (6) comprises a cooling fan (61) and a rotating mechanism (64), wherein the cooling fan (61) is fixedly connected to one end of the placement plate (5), and the air outlet end of the cooling fan (61) is fixedly connected to and communicated with two air ducts (62), wherein the upper air duct (62) is arranged above the mounting groove (51), and one end of the lower air duct (62) passes through the placement plate (5) and is communicated with the mounting groove (51), and the rotating mechanism (64) is rotatably connected to the inside of the mounting groove (51), and one end of the rotating mechanism (64) passes through the mounting groove (51) and extends to the outside of the placement plate (5), and the top of the rotating mechanism (64) is fixedly connected to a heating rod (63) flush with the opening of the mounting groove (51).

2. A plastic sheet bending device according to claim 1, characterized in that: The axis lines of the two wind tubes (62) and the center point of the heating rod (63) are both arranged on the same vertical plane, and the angle line between the openings of the two wind tubes (62) intersects with the top of the heating rod (63).

3. A plastic sheet bending device according to claim 1, characterized in that: The other end of the placement plate (5) is provided with a ventilation hole (52) which is in communication with the installation groove (51), and the ventilation hole (52) and the air cylinder (62) below are arranged at the same height.

4. A plastic sheet bending device according to claim 1, characterized in that: The rotating mechanism (64) comprises a rotating shaft plate (641), wherein the rotating shaft plate (641) is rotatably connected to the inside of the mounting groove (51), the heating rod (63) is fixedly connected to the top of the rotating shaft plate (641), the rotating shaft plate (641) is arranged below the wind tube (62), one end of the rotating shaft plate (641) passes through the mounting groove (51) and extends to the outside of the placement plate (5), and one end of the rotating shaft plate (641) is fixedly connected to a crank (642).

5. A plastic sheet bending device according to claim 4, characterized in that: The other end of the placement plate (5) is provided with two positioning grooves (53) symmetrically distributed on both sides of the rotating shaft plate (641); the inner side of the crank handle (642) is slidably connected with a turning handle (643); both ends of the turning handle (643) penetrate to the outside of the crank handle (642); one end of the turning handle (643) is plugged into the adjacent positioning groove (53).

6. A plastic sheet bending device according to claim 5, characterized in that: A rubber spring (644) is sleeved on the surface of the turning handle (643). The rubber spring (644) is fixedly connected between the crank (642) and the turning handle (643). The rubber spring (644) is always in a compressed state.

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