Box shell forming device

Abstract

According to the box shell forming device provided by the utility model, the detection unit and the spraying mechanism are arranged in the interval space formed between the heating space formed by the heating mechanism on the rack and the clamping mechanism; and a preset distance is formed between a detection area formed by the detection unit in the interval space and the lower surface of the clamping mechanism. When the materials clamped by the clamping mechanism are excessively heated, softened, fall and intrude into a detection area, the detection unit outputs a limit invading signal, and the spraying mechanism sprays cooling water according to the limit invading signal, so that the materials can be cooled and hardened, the materials are prevented from further falling to the heating mechanism below, and the quality of the materials is improved. Therefore, the problem that in the existing trunk shell production process, the thermoplastic sheet is softened and falls to the heating device due to excessive heating is solved.

Description

Technical Field

[0001] This utility model belongs to the field of luggage manufacturing technology, and in particular relates to a luggage shell forming device. Background Technology

[0002] Luggage can be categorized into hard-shell and soft-shell suitcases based on their outer shell. Soft-shell suitcases are lighter and offer more flexible capacity. Currently, soft-shell suitcases are generally made of plastic. During the manufacturing process, the plastic suitcase shell is often shaped in one step using molding equipment. The molding process involves feeding loose granular or powdered raw materials from an injection molding machine into a high-temperature barrel, heating and melting them into a viscous melt. This melt is then injected into a mold at a certain pressure and speed. After holding the pressure and cooling, the mold is opened, resulting in a plastic product of a specific shape and size. In the production of suitcase shells, vacuum forming, also known as thermoforming, is commonly used. This process utilizes the vacuum suction generated by a vacuum pump to shape softened thermoplastic sheets such as PVC, PET, PETG, APTT, PP, PE, and PS into various shapes of vacuum covers or attach them to the surface of products of various shapes. The main advantage of vacuum forming is its low equipment and mold costs, making it a relatively economical molding method.

[0003] However, during the heating process, thermoplastic sheets may be overheated, causing them to soften excessively and fall onto the heating devices below, which could lead to production accidents such as fires or disruptions to production. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a box shell forming device to solve the problem that thermoplastic sheets are overheated and softened and fall onto the heating device during the production of existing suitcase shells.

[0005] To solve the above problems, the technical solution of this utility model is as follows:

[0006] This utility model provides a box shell forming device, comprising:

[0007] A frame, wherein a heating mechanism and at least one forming mechanism are provided on the frame, the heating mechanism being configured to have a heating space;

[0008] At least one clamping mechanism is configured to clamp material and move between the heating space and the forming mechanism, and when the clamping mechanism is located in the heating space, a gap space is formed between the bottom surface of the heating space and the lower end surface of the clamping mechanism;

[0009] A detection unit is disposed in the interval space. The detection unit is configured to form a detection area located below the lower end face of the clamping mechanism to detect whether the heated material has invaded the detection area and output an invasion limit signal. The interval between the detection area and the lower end face of the clamping mechanism is a preset distance.

[0010] A spraying mechanism, the output end of which is disposed in the interval space, and the spraying mechanism is configured to receive the intrusion limit signal and spray cooling water into the interval space to cool the heated material.

[0011] The box shell forming device of this utility model includes a detection unit comprising at least one infrared grating, wherein the projector and receiver of the infrared grating are respectively arranged on both sides of the interval space.

[0012] The box shell forming device of this utility model has a preset spacing of A, where 11cm≤A≤14cm.

[0013] The shell forming device of this utility model includes at least two spray nozzles at the output end of the spraying mechanism, and the two spray nozzles are symmetrically arranged on both sides of the interval space.

[0014] The shell forming device of this utility model also includes a control unit, which is installed on the frame and configured to receive the intrusion limit signal and output a spray signal to the spraying mechanism.

[0015] The shell forming device of this utility model includes a heating mechanism comprising an upper heating panel and a lower heating panel; a heating station is provided on the frame, and the upper heating panel and the lower heating panel are vertically spaced at the heating station to form a heating space between the upper heating panel and the lower heating panel.

[0016] The box shell forming device of this utility model has two forming mechanisms;

[0017] The two forming mechanisms are located on both sides of the heating mechanism, and the forming space of each forming mechanism is connected to the heating space. The two forming spaces and the heating space cooperate to form a sliding space.

[0018] The clamping mechanism includes a slide rail and two clamping fixtures. The slide rail is arranged in the sliding space, and the two clamping fixtures are slidably connected to the slide rail and configured to slide within the sliding space. When one of the clamping fixtures is located in the heating space, the other clamping fixture is located in the forming space on the corresponding side to perform the shell forming process.

[0019] The box shell forming device of this utility model includes a forming mechanism comprising a vertical drive mechanism, a forming mold, an air blowing unit, and a vacuum unit.

[0020] The molding die is arranged on the vertical drive mechanism, which is configured to drive the molding die upward into the molding space; the blowing unit is arranged on the molding space and is configured to output gas and cause the heated material to expand upward; and the molding die is provided with a plurality of vacuum suction holes, the input end of which is connected to the vacuum unit, which is configured to extract the gas between the molding die and the upwardly expanding material so that the material is adsorbed and adhered to the surface of the molding die.

[0021] The box shell forming device of this utility model further includes a pressing mechanism. The pressing mechanism is installed on the frame and located above the forming space. The pressing mechanism is configured to move downward and press against the clamping fixture located in the forming space.

[0022] The box shell forming device of this utility model includes a clamping fixture comprising a base slidably connected to the slide rail, a pressure plate rotatably connected to the base, and a locking device for driving the pressure plate to press or release the material.

[0023] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:

[0024] One embodiment of this invention involves setting up a detection unit and a spraying mechanism within the space between the heating space formed by the heating mechanism on the frame and the clamping mechanism. The detection area formed by the detection unit within the space is spaced from the lower surface of the clamping mechanism by a preset distance. When the material held by the clamping mechanism is overheated, softens, and falls into the detection area, the detection unit outputs an intrusion limit signal. The spraying mechanism then sprays cooling water according to this signal, thereby cooling and hardening the material and preventing it from falling further to the heating mechanism below. This solves the problem of thermoplastic sheets softening and falling onto heating devices during the production of luggage shells. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the shell forming device of this utility model;

[0026] Figure 2 This is a top view of the space between the box shell forming device of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Frame; 101. Heating space; 102. Interval space; 2. Upper heating panel; 3. Lower heating panel; 4. Clamping mechanism; 5. Spray nozzle; 6. Detection unit; 601. Infrared grating; 7. Forming mechanism; 8. Pressing mechanism. Detailed Implementation

[0028] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the box shell forming device proposed in this utility model. The advantages and features of this utility model will become clearer from the following description and claims.

[0029] See Figure 1 and Figure 2 In one embodiment, a box shell forming apparatus includes a frame 1, a heating mechanism, a forming mechanism 7, a clamping mechanism 4, a detection unit 6, and a spraying mechanism.

[0030] The frame 1 is provided with a heating mechanism and at least one forming mechanism 7. The heating mechanism is configured to have a heating space 101. At least one clamping mechanism 4 is configured to clamp material and move between the heating space 101 and the forming mechanism 7. When the clamping mechanism 4 is located in the heating space 101, a gap space 102 is formed between the bottom surface of the heating space 101 and the lower end surface of the clamping mechanism 4.

[0031] A detection unit 6 is disposed in the interval space 102. The detection unit 6 is configured to form a detection area located below the lower end face of the clamping mechanism 4 to detect whether the heated material has invaded the detection area and output an invasion limit signal. The interval between the detection area and the lower end face of the clamping mechanism 4 is a preset distance, which is used as a margin for the material to fall after normal heating and softening. The output end of the spraying mechanism is also disposed in the interval space 102, and the spraying mechanism is configured to receive the invasion limit signal and spray cooling water into the interval space 102 to cool the heated material.

[0032] In this embodiment, a detection unit 6 and a spraying mechanism are arranged within the interval space 102 formed between the heating space 101 formed by the heating mechanism on the frame 1 and the clamping mechanism 4. The detection area formed by the detection unit 6 within the interval space 102 is spaced at a preset distance from the lower surface of the clamping mechanism 4. When the material held by the clamping mechanism 4 is overheated, softens, and falls into the detection area, the detection unit 6 outputs an intrusion limit signal. The spraying mechanism then sprays cooling water according to this signal, thereby cooling and hardening the material and preventing it from falling further to the heating mechanism below. This solves the problem of thermoplastic sheets softening and falling onto heating devices during the production of existing suitcase shells.

[0033] The specific structure of the shell forming device in this embodiment will be further described below:

[0034] In this embodiment, the detection unit 6 includes at least one infrared grating 601, with the projector and receiver of the infrared grating 601 respectively arranged on both sides of the spacing space 102. Specifically, two parallel infrared gratings 601 can be arranged for redundancy, and the detection area can be further increased. Of course, in other embodiments, the detection unit 6 can also be other detection modules, such as a laser detection module, as long as it can meet the intrusion detection requirements, and no specific limitation is made here.

[0035] In this embodiment, the aforementioned preset spacing can specifically be A, where 11cm≤A≤14cm.

[0036] In this embodiment, the output end of the spraying mechanism may specifically include at least two spray nozzles 5, which are symmetrically arranged on both sides of the space 102. The spraying mechanism may specifically include corresponding water tanks, pipelines, pumps, and other structures, which are not specially designed and will not be described in detail here.

[0037] In this embodiment, the shell forming device may further include a control unit, which is mounted on the frame 1 and configured to receive an intrusion limit signal and output a spray signal to the spray mechanism. That is, the control unit can serve as an intermediate component for signal transmission between the detection unit 6 and the spray mechanism.

[0038] In this embodiment, the heating mechanism may specifically include an upper heating panel 2 and a lower heating panel 3. A heating station is provided on the frame 1, and the upper heating panel 2 and the lower heating panel 3 are vertically spaced at the heating station, forming a heating space 101 between them. In this embodiment, the distance between the infrared grating 601 and the lower heating panel 3 can be further set to 10cm-16cm, thereby ensuring that the cooling liquid output from the spray nozzles can effectively prevent softened materials from falling.

[0039] Furthermore, there can be two molding mechanisms 7, which are located on both sides of the heating mechanism, and the molding space of each molding mechanism 7 is connected to the heating space 101. The two molding spaces and the heating space 101 cooperate to form a sliding space.

[0040] The clamping mechanism 4 includes a slide rail and two clamping fixtures. The slide rail is arranged in a sliding space, and the two clamping fixtures are slidably connected to the slide rail and configured to slide within the sliding space. That is, the clamping fixtures can first move to the heating space 101 to heat the material they hold, and then move the heated material to the corresponding forming space for shell forming. Specifically, when one clamping fixture is in the heating space 101, the other clamping fixture is in the corresponding forming space for shell forming. In other words, while one clamping fixture is heating the material at the heating station, the other clamping fixture is in the corresponding forming fixture for forming, thereby improving forming efficiency. Furthermore, the clamping mechanism 4 may also include a drive unit, such as a combination of a motor and a rack and pinion gear, to achieve automated movement of the clamping fixtures relative to the slide rail.

[0041] In this embodiment, the forming mechanism 7 includes a vertical drive mechanism (specifically, a cylinder or hydraulic cylinder capable of vertical movement), a forming mold, an air blowing unit, and a vacuum unit. The forming mold is arranged in the vertical drive mechanism, which is configured to drive the forming mold upward into the forming space. The air blowing unit is arranged in the forming space and is configured to output gas, causing the heated material to expand upward. Furthermore, the forming mold is provided with several vacuum suction holes, the input ends of which are connected to the vacuum unit. The vacuum unit is configured to extract the gas between the forming mold and the upwardly expanding material, so that the material adheres to the surface of the forming mold. Two forming mechanisms 7 can share the same air blowing unit and vacuum unit.

[0042] Furthermore, the molding mechanism 7 also includes a pressing mechanism, which is mounted on the frame 1 and located above the molding space. The pressing mechanism is configured to move downward and press against a clamping fixture located in the molding space.

[0043] In this embodiment, the clamping fixture includes a base slidably connected to the slide rail, a pressure plate rotatably connected to the base, and a locking device for pressing or releasing the material by the pressure plate. In other embodiments, the clamping fixture may also be configured to include a base slidably connected to the slide rail, a base plate mounted on the base via a lifting device (specifically a cylinder or hydraulic cylinder, etc.), a pressure plate rotatably connected to the base plate, and a locking device for pressing or releasing the material by the pressure plate. The purpose of the lifting device is to cooperate with the spraying device. When the spraying device receives an intrusion signal and sprays, the lifting device simultaneously lifts the base plate and the material on it to a certain height, thereby further preventing the material from falling onto the lower heating panel 3 below.

[0044] The working principle of the box shell forming device in this embodiment is as follows: The material is placed on the clamping fixture. While one clamping fixture is heated in the heating space 101 in the middle, the other clamping fixture is formed in the forming space on the corresponding side. The clamping fixture moves the heated material to the forming space. The pressing mechanism presses down to tighten the clamping fixture. Then, the blowing unit outputs air to make the material expand upward. The vertical drive mechanism drives the forming mold to move upward. At the same time, the vacuum unit works, causing the vacuum suction hole to suck the material downward, so that the material adheres to the forming mold, thereby completing the box shell forming.

[0045] When the material clamped in the heating space 101 overheats and softens and falls into the detection area, the spray nozzle 5 sprays coolant towards the material, and the lifting device lifts the base plate and the material. The cooled material hardens and no longer falls off, thus preventing the material from falling onto the lower heating panel 3 and causing a fire or other production accident.

[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A box shell forming device, characterized in that, include: A frame, wherein a heating mechanism and at least one forming mechanism are provided on the frame, the heating mechanism being configured to have a heating space; At least one clamping mechanism is configured to clamp material and move between the heating space and the forming mechanism, and when the clamping mechanism is located in the heating space, a gap space is formed between the bottom surface of the heating space and the lower end surface of the clamping mechanism; A detection unit is disposed in the interval space. The detection unit is configured to form a detection area located below the lower end face of the clamping mechanism to detect whether the heated material has invaded the detection area and output an invasion limit signal. The interval between the detection area and the lower end face of the clamping mechanism is a preset distance. A spraying mechanism, the output end of which is disposed in the interval space, and the spraying mechanism is configured to receive the intrusion limit signal and spray cooling water into the interval space to cool the heated material.

2. The shell forming apparatus as described in claim 1, characterized in that, The detection unit includes at least one infrared grating, with the projector and receiver of the infrared grating respectively arranged on both sides of the space.

3. The shell forming apparatus as described in claim 1, characterized in that, The preset spacing is A, where 11cm ≤ A ≤ 14cm.

4. The shell forming apparatus as described in claim 1, characterized in that, The output end of the spraying mechanism includes at least two spray nozzles, which are symmetrically arranged on both sides of the interval space.

5. The shell forming apparatus as described in claim 1, characterized in that, It also includes a control unit mounted on the frame and configured to receive the intrusion limit signal and output a spray signal to the spray mechanism.

6. The shell forming apparatus as described in claim 1, characterized in that, The heating mechanism includes an upper heating panel and a lower heating panel; a heating station is provided on the frame, and the upper heating panel and the lower heating panel are vertically spaced at the heating station to form the heating space between the upper heating panel and the lower heating panel.

7. The shell forming apparatus as described in claim 1, characterized in that, The number of forming mechanisms is two; The two forming mechanisms are located on both sides of the heating mechanism, and the forming space of each forming mechanism is connected to the heating space. The two forming spaces and the heating space cooperate to form a sliding space. The clamping mechanism includes a slide rail and two clamping fixtures. The slide rail is arranged in the sliding space, and the two clamping fixtures are slidably connected to the slide rail and configured to slide within the sliding space. When one of the clamping fixtures is located in the heating space, the other clamping fixture is located in the forming space on the corresponding side to perform the shell forming process.

8. The shell forming apparatus as described in claim 7, characterized in that, The molding mechanism includes a vertical drive mechanism, a molding die, an air blowing unit, and a vacuum unit; The molding die is arranged on the vertical drive mechanism, which is configured to drive the molding die upward into the molding space; the blowing unit is arranged on the molding space and is configured to output gas and cause the heated material to expand upward; and the molding die is provided with a plurality of vacuum suction holes, the input end of which is connected to the vacuum unit, which is configured to extract the gas between the molding die and the upwardly expanding material so that the material is adsorbed and adhered to the surface of the molding die.

9. The shell forming apparatus as described in claim 8, characterized in that, The molding mechanism further includes a pressing mechanism, which is mounted on the frame and located above the molding space. The pressing mechanism is configured to move downward and press against the clamping fixture located within the molding space.

10. The shell forming apparatus as described in claim 7, characterized in that, The clamping fixture includes a base slidably connected to the slide rail, a pressure plate rotatably connected to the base, and a locking device for driving the pressure plate to press or release the material.

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