Cooling device for the forming of plastic sheet material
The pre-cooling roller assembly, with its bracket and adjustment frame structure, contacts the sheet material for cooling. Combined with a guide and drive device, this solves the problem of water droplet residue and achieves uniform cooling and adaptability in plastic sheet molding equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUZHOU JINWEI EXTRUSION EQUIPMENT CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-06-02
AI Technical Summary
Existing plastic sheet molding equipment has a problem with water droplet residue during the cooling process, which affects subsequent processing.
The pre-cooling roller assembly is designed with a bracket and adjustment frame structure. It contacts the upper and lower surfaces of the sheet material for cooling. Circulating water is injected through a guide mechanism. Combined with the drive device and lifting mechanism, it achieves uniform cooling and avoids water droplet retention.
It achieves uniform temperature transfer, adapts to the needs of boards of different thicknesses, avoids water droplet retention, and improves the convenience of subsequent processing.
Smart Images
Figure CN224311013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic sheet processing technology, and in particular to a cooling device for forming plastic sheets. Background Technology
[0002] Existing plastic sheet (plate) thermoforming machines can be divided into thin plastic sheet and thick plastic sheet thermoforming machines. They have functions such as feeding, heating, forming, cooling, demolding, and punching, and can complete all processes of plastic sheet or plate thermoforming. They are widely used to manufacture food, hardware tool packaging plastic products, automotive interior parts, motorcycle decorative panels, refrigerator liners, lamps, etc., using plastic sheets and plates such as PVC, PET, PS, PP, ABS, and acrylic. After the plastic sheets and plates have been shaped, they are cooled using cooling equipment.
[0003] Patent application CN201821013031.0 discloses a cooling device for plastic strips. It includes a cooling box, a cooling water recovery tank, a cooling water tank, and cooling water pipes. The cooling box is positioned on the cooling water recovery tank, and the cooling water tank is connected to it. A cooling channel with both ends extending through the cooling box is provided along its length, and the cooling channel is connected to the cooling water tank via the cooling water pipes. This invention uses a cooling box as a cooling device for plastic strips. The cooling channel confines the plastic strip within the cooling box, and cooling water is injected into the cooling channel for cooling. This allows for comprehensive and uniform cooling of the plastic strip without dead angles. Simultaneously, the cooling channel has a shaping effect on the plastic strip, preventing deformation during the cooling process. While water cooling provides uniform heat transfer and significant cooling effect, direct spraying can lead to water droplet residue on the strip, affecting subsequent processing. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes a cooling device for molding plastic sheets and plates, thereby overcoming the shortcomings of existing devices.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a cooling device for molding plastic sheets and plates, including a bracket and an adjusting frame, wherein a pre-cooling roller group is provided on the facing sides of the bracket and the adjusting frame;
[0006] Four limiting plates are set around the bracket, and the limiting plates are fixedly connected to the bracket. Four mating blocks are set around the adjusting frame, and the mating blocks are fixedly connected to the adjusting frame. Each mating block is slidably connected to the sliding groove opened on each limiting plate. The top of the limiting plate is equipped with a lifting mechanism for adjusting the height of the adjusting frame, and the bottom of the limiting plate is fixedly equipped with a support leg.
[0007] The precooling roller assembly includes multiple precooling rollers, each of which is rotatably mounted inside the bracket and adjusting frame. The bracket and adjusting frame are equipped with a drive device for controlling the rotation of the precooling rollers.
[0008] A further improvement is that: roller shafts are fixedly installed at both ends of the precooling roller, and the roller shafts are rotatably connected to bearing seats located inside the bracket and adjusting frame. The bearing seats are detachably connected to the bracket and adjusting frame. A cavity is opened inside the precooling roller to allow the flow of cooling water. A guide mechanism for injecting circulating water into the cavity is provided on the outside of the bracket and adjusting frame.
[0009] A further improvement is that the flow guiding mechanism includes a flow guiding pipe, which is fixedly installed on the outside of the bracket and the adjusting frame. The flow guiding pipe is connected to the cavity through a roller shaft, and the flow guiding pipe is rotatably connected to the roller shaft.
[0010] A further improvement is that the driving device includes a second motor, a first bevel gear, and a second bevel gear. The first bevel gear is sleeved on the outside of one of the rollers of the bracket and the adjusting frame, and is fixedly connected to the roller. The second bevel gear is rotatably disposed inside the bracket and the adjusting frame, and meshes with the first bevel gear. The second motor is fixedly disposed on the outside of the bracket and the adjusting frame, and the output end of the second motor is fixedly connected to the second bevel gear. Two adjacent rollers are movably connected through a belt drive component.
[0011] A further improvement is that the belt drive component includes a pulley sleeved on the outside of the roller shaft, the pulley is fixedly connected to the roller shaft, and two adjacent pulleys are connected by a drive belt.
[0012] A further improvement is that a boss is provided on the outer side of the bearing housing, and a fixing bolt is mounted on the boss. The fixing bolt passes through the boss and is threadedly connected to the bolt hole opened on the bracket.
[0013] A further improvement is made in that: the lifting mechanism includes a screw, a limiting rod, and a first motor. The screw is rotatably mounted inside one of the slide grooves, passes through a mating block, and is threadedly connected to the mating block. The limiting rod is fixedly mounted inside several other slide grooves, passes through the mating block, and is slidably connected to the mating block. The first motor is fixedly mounted on the top of one of the limiting plates, and the output end of the first motor is fixedly connected to the screw.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] As the adjusting frame descends, the two rows of pre-cooling rollers contact the upper and lower surfaces of the sheet material to cool it down. The drive device controls the pre-cooling rollers to rotate and feed the sheet material outward. During the feeding process, the pre-cooling rollers rotate and make uniform contact with the surface of the sheet material, resulting in uniform temperature transfer. The distance between the adjusting frame and the support can be adjusted by the lifting mechanism, which can meet the pre-cooling needs of sheets of different thicknesses and has good applicability. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a structural diagram of the adjustment frame in this utility model.
[0018] Figure 2 This is a structural diagram of the bracket in this utility model.
[0019] Figure 3 This is a structural diagram of the precooling roller in this utility model.
[0020] The components are as follows: 01, bracket; 02, adjusting frame; 2, precooling roller; 3, limiting plate; 4, support leg; 5, mating block; 6, slide groove; 7, screw; 8, first motor; 9, limiting rod; 10, bearing seat; 11, fixing bolt; 12, roller shaft; 13, first bevel gear; 14, second bevel gear; 15, pulley; 16, guide pipe; 17, second motor. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0022] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a cooling device for molding plastic sheets, including a bracket 01 and an adjusting frame 02, with a pre-cooling roller group provided on the facing sides of the bracket 01 and the adjusting frame 02.
[0023] Four limiting plates 3 are provided around the bracket 01, and the limiting plates 3 are fixedly connected to the bracket 01. Four mating blocks 5 are provided around the adjusting frame 02, and the mating blocks 5 are fixedly connected to the adjusting frame 02. Each mating block 5 is slidably connected to the sliding groove 6 opened in each limiting plate 3. The top of the limiting plate 3 is provided with a lifting mechanism for adjusting the height of the adjusting frame 02, and the bottom of the limiting plate 3 is fixedly provided with a support leg 4.
[0024] The sheet material that needs to be cooled is conveyed outward on the bracket 01. The lifting mechanism pushes the adjusting frame 02 down. The pre-cooling roller group between the bracket 01 and the adjusting frame 02 contacts the upper and lower end faces of the sheet material to cool it down. The distance between the adjusting frame 02 and the bracket 01 can be adjusted by the lifting mechanism, which can meet the pre-cooling needs of sheets of different thicknesses and has good applicability.
[0025] The precooling roller assembly includes multiple precooling rollers 2, each precooling roller 2 is rotatably mounted inside the bracket 01 and the adjusting frame 02, and a drive device for controlling the rotation of the precooling roller 2 is provided on the outside of the bracket 01 and the adjusting frame 02.
[0026] As the adjusting frame 02 descends, the two rows of precooling rollers 2 contact the upper and lower surfaces of the sheet material respectively. The driving device controls the precooling rollers 2 to rotate and send the sheet material outward. During the sending process, the precooling rollers 2 rotate and make uniform contact with the surface of the sheet material, so that the temperature is transferred evenly.
[0027] It is worth explaining in detail that roller shafts 12 are fixedly installed at both ends of the precooling roller 2. The roller shafts 12 are rotatably connected to bearing seats 10 located inside the bracket 01 and the adjusting frame 02. The bearing seats 10 are detachably connected to the bracket 01 and the adjusting frame 02. A cavity for allowing cooling water to flow is opened inside the precooling roller 2. A guide mechanism for injecting circulating water into the cavity is provided on the outside of the bracket 01 and the adjusting frame 02. Circulating water is injected into the cavity of the precooling roller 2 through the guide mechanism. When the plastic sheet passes between the bracket 01 and the adjusting frame 02, the precooling roller 2 cools the sheet from the top and bottom surfaces, preventing water droplets from falling onto the surface of the sheet during water cooling, which facilitates subsequent maintenance.
[0028] Specifically, the flow guiding mechanism includes a flow guiding pipe 16, which is fixedly installed on the outside of the bracket 01 and the adjusting frame 02. The flow guiding pipe 16 is connected to the cavity through the roller shaft 12, and the flow guiding pipe 16 is rotatably connected to the roller shaft 12. The connection between the flow guiding pipe 16 and the roller shaft 12 is made by a slip ring structure. When the precooling roller 2 rotates, the external pump can still draw cooling water into the precooling roller 2 for circulation through the flow guiding pipe 16.
[0029] Regarding the drive unit:
[0030] The drive unit includes a second motor 17, a first bevel gear 13, and a second bevel gear 14. The first bevel gear 13 is sleeved on the outside of one of the roller shafts 12 of the bracket 01 and the adjusting frame 02, and is fixedly connected to the roller shaft 12. The second bevel gear 14 is rotatably disposed inside the bracket 01 and the adjusting frame 02, and meshes with the first bevel gear 13. The second motor 17 is fixedly disposed on the outside of the bracket 01 and the adjusting frame 02, and its output end is fixedly connected to the second bevel gear 14. Adjacent roller shafts 12 are movably connected via a belt drive component. The second motor 17 controls the rotation of the second bevel gear 14, which meshes with the first bevel gear 13 during rotation. Since the roller shaft 12 is fixed to the first bevel gear 13, and the precooling roller 2 is fixed to the roller shaft 12, the precooling roller 2 will also rotate when the first bevel gear 13 rotates.
[0031] Specifically, the belt drive includes a pulley 15 sleeved on the outside of the roller shaft 12. The pulley 15 is fixedly connected to the roller shaft 12, and adjacent pulleys 15 are connected by a drive belt. When one of the roller shafts 12 rotates, the roller shaft 12 will drive the other roller shafts 12 to rotate simultaneously through the bearing seat 10 and the drive belt.
[0032] In a preferred embodiment, the bearing housing 10 has a boss on its outer side, and a fixing bolt 11 is fitted on the boss. The fixing bolt 11 passes through the boss and is threadedly connected to a bolt hole on the bracket 01. A nut is fitted onto one end of the fixing bolt 11 that passes through the bolt hole. By tightening the nut, the bearing housing 10 is secured, ensuring that the bearing housing 10 does not loosen when the precooling roller 2 rotates.
[0033] Regarding the lifting mechanism:
[0034] The lifting mechanism includes a screw 7, a limiting rod 9, and a first motor 8. The screw 7 is rotatably mounted inside one of the slide grooves 6. The screw 7 passes through the mating block 5 and is threadedly connected to the mating block 5. The limiting rod 9 is fixedly mounted inside several other slide grooves 6. The limiting rod 9 passes through the mating block 5 and is slidably connected to the mating block 5. The first motor 8 is fixedly mounted on the top of one of the limiting plates 3. The output end of the first motor 8 is fixedly connected to the screw 7.
[0035] After the sheet material passes between the bracket 01 and the adjusting frame 02, the first motor 8 controls the screw 7 to rotate. As the screw 7 rotates, it engages with the mating block 5, pushing the mating block 5 downwards. The adjusting frame 02 is fixed to the mating block 5. When the mating block 5 falls, the adjusting frame 02 also falls, ensuring that the upper and lower sets of pre-cooling rollers 2 can contact the upper and lower end faces of the sheet material. The mating block 5 is slidably positioned inside the slide groove 6. The limiting rod 9 inside the slide groove 6 guides the mating block 5, improving the stability of the adjusting frame 02 during its descent.
[0036] How this application works:
[0037] The sheet material requiring cooling is conveyed outward on the support 01. A lifting mechanism pushes the adjusting frame 02 down. The pre-cooling rollers between the support 01 and the adjusting frame 02 contact the upper and lower surfaces of the sheet material, cooling it. The distance between the adjusting frame 02 and the support 01 can be adjusted by the lifting mechanism, meeting the pre-cooling needs of sheets of different thicknesses and offering good applicability. As the adjusting frame 02 descends, the two rows of pre-cooling rollers 2 contact the upper and lower surfaces of the sheet material respectively. The drive device controls the rotation of the pre-cooling rollers 2, sending the sheet material outward. During this process, the pre-cooling rollers 2 rotate, ensuring uniform contact with the sheet material surface and even temperature transfer.
[0038] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0039] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A cooling device for molding plastic sheets, comprising a bracket (01) and an adjusting frame (02), characterized in that: The bracket (01) and the adjusting frame (02) are provided with a pre-cooling roller group on their facing sides; Four limiting plates (3) are arranged around the bracket (01), and the limiting plates (3) are fixedly connected to the bracket (01). Four mating blocks (5) are arranged around the adjusting frame (02), and the mating blocks (5) are fixedly connected to the adjusting frame (02). Each mating block (5) is slidably connected to the sliding groove (6) opened in each limiting plate (3). The top of the limiting plate (3) is provided with a lifting mechanism for adjusting the height of the adjusting frame (02), and the bottom of the limiting plate (3) is fixedly provided with a support leg (4). The precooling roller group includes multiple precooling rollers (2), each of the precooling rollers (2) is rotatably disposed inside the bracket (01) and the adjusting frame (02), and the bracket (01) and the adjusting frame (02) are provided with a drive device for controlling the rotation of the precooling rollers (2) on the outside.
2. The cooling device for forming plastic sheets and plates according to claim 1, characterized in that: The precooling roller (2) is fixedly provided with roller shafts (12) at both ends. The roller shafts (12) are rotatably connected to the bearing seats (10) provided inside the bracket (01) and the adjusting frame (02). The bearing seats (10) are detachably connected to the bracket (01) and the adjusting frame (02). The precooling roller (2) has a cavity inside that allows cooling water to flow. The bracket (01) and the adjusting frame (02) are provided with a flow guiding mechanism for injecting circulating water into the cavity on the outside.
3. The cooling device for molding plastic sheets and plates according to claim 2, characterized in that: The flow guiding mechanism includes a flow guiding pipe (16), which is fixedly disposed on the outside of the bracket (01) and the adjusting frame (02). The flow guiding pipe (16) is connected to the cavity through the roller shaft (12), and the flow guiding pipe (16) is rotatably connected to the roller shaft (12).
4. The cooling device for molding plastic sheets and plates according to claim 2, characterized in that: The driving device includes a second motor (17), a first bevel gear (13), and a second bevel gear (14). The first bevel gear (13) is sleeved on the outside of one of the rollers (12) of the bracket (01) and the adjusting frame (02). The first bevel gear (13) is fixedly connected to the roller (12). The second bevel gear (14) is rotatably disposed inside the bracket (01) and the adjusting frame (02). The second bevel gear (14) meshes with the first bevel gear (13). The second motor (17) is fixedly disposed on the outside of the bracket (01) and the adjusting frame (02). The output end of the second motor (17) is fixedly connected to the second bevel gear (14). Two adjacent rollers (12) are movably connected by a belt drive.
5. The cooling device for molding plastic sheets and plates according to claim 4, characterized in that: The belt drive component includes a pulley (15) sleeved on the outside of the roller shaft (12), the pulley (15) being fixedly connected to the roller shaft (12), and two adjacent pulleys (15) being connected by a drive belt.
6. The cooling device for molding plastic sheets and plates according to claim 2, characterized in that: The bearing housing (10) has a boss on its outer side, and a fixing bolt (11) is fitted on the boss. The fixing bolt (11) passes through the boss and is threadedly connected to the bolt hole opened on the bracket (01).
7. The cooling device for forming plastic sheets and plates according to claim 1, characterized in that: The lifting mechanism includes a screw (7), a limiting rod (9), and a first motor (8). The screw (7) is rotatably disposed inside one of the slide grooves (6). The screw (7) passes through the mating block (5) and is threadedly connected to the mating block (5). The limiting rod (9) is fixedly disposed inside the other slide grooves (6). The limiting rod (9) passes through the mating block (5) and is slidably connected to the mating block (5). The first motor (8) is fixedly disposed on the top of one of the limiting plates (3). The output end of the first motor (8) is fixedly connected to the screw (7).