Temperature-controllable local cooling equipment for PET (Polyethylene Terephthalate) bottle preform

Abstract

The utility model discloses temperature-controllable local cooling equipment for a PET (Polyethylene Terephthalate) bottle preform, and relates to the technical field of heating or cooling preforms, parisons or blown products. The temperature-controllable local cooling equipment for the PET bottle preform comprises a cooling device shell, the clamping assembly is arranged in the cooling device shell, the clamping assembly comprises a circular ring piece, a first disc piece, four sliding rods, four connecting plates, two protruding blocks, four threaded columns and four clamping discs, the circular ring piece is fixed to the cooling device shell, and the circular ring piece is fixed to the cooling device shell through the four clamping discs in the clamping assembly; the four clamping discs can be driven by the motor to alternately clamp the PET bottle, so that the area clamped by the clamp is cooled, and the phenomenon that the overall cooling uniformity is poor due to the fact that the temperature of the area clamped by the clamp is reduced too slowly is avoided. The cooling effect of the two air blowing heads on the clamping area can be improved through alternate clamping of the four clamping discs, and the cooling uniformity of the whole PET bottle preform is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating or cooling preforms, parisons or blown products, and particularly relates to a locally-cooling device with controllable temperature for PET preforms. Background Art

[0002] In the production process of PET preforms, cooling is an important step, which directly affects the quality and forming effect of the preforms. Through a locally-cooling device with controllable temperature, the cooling rate and temperature distribution of PET preforms can be precisely controlled, thereby avoiding quality problems such as deformation and cracking of the preforms, and improving production efficiency and product qualification rate. The Chinese utility model patent, with the authorization announcement number "CN220841403U", discloses an accelerated cooling and temperature reduction device, which includes a PET bottle channel rack one and a PET bottle channel rack two that are fitted and connected, and the PET bottle channel rack one and the PET bottle channel rack two are installed in the transportation line after PET bottle processing. A plurality of groups of cooling water spray heads are arranged on the inner walls of both sides of the PET bottle channel rack one. The two groups of cooling water spray heads are in an arc shape and are symmetric with each other, forming a water-cooling temperature reduction channel for PET bottles. Two groups of symmetric cooling fans are fixedly arranged on the inner walls of both sides of the PET bottle channel rack two, forming a blowing temperature reduction channel for PET bottles. A water circulation mechanism that cooperates with the cooling fans is arranged between the PET bottle channel rack two and the water-cooling mechanism on one side of the PET bottle channel rack one, so as to perform rapid and uniform temperature reduction during the processing and transportation of PET bottles, and at the same time, the waste water used for water-cooling temperature reduction can be recycled again, achieving the effect of saving water.

[0003] In the above technical solution, when cooling the PET bottle, it is necessary to clamp it to prevent the PET bottle from being pushed by water. However, when the clamped position is cooled, it is not easily cooled evenly, resulting in poor cooling uniformity. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a locally-cooling device with controllable temperature for PET preforms, which can solve the problem that when the clamped position is cooled, it is not easily cooled evenly, resulting in poor cooling uniformity.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A locally-cooling device with controllable temperature for PET preforms, including a cooling device housing;

[0006] The clamping assembly is arranged inside the housing of the cooling device. The clamping assembly includes a ring part, a first disc part, four sliding rods, four connecting plates, two convex blocks, four threaded columns, and four clamping discs. The ring part is fixed to the housing of the cooling device. The four sliding rods all slide through the ring part. The four connecting plates are respectively welded to the corresponding sliding rods. The four connecting plates all slide only along the surface of the housing of the cooling device. The four threaded columns are respectively threadedly connected to the surfaces of the corresponding connecting plates. The four clamping discs are respectively welded to the corresponding threaded columns.

[0007] Preferably, a motor is installed inside the housing of the cooling device by screws, and the output shaft of the motor rotates through the housing of the cooling device.

[0008] Preferably, the two convex blocks are welded to both ends of the first disc part. The surfaces of the two convex blocks are respectively in contact with the surfaces of the corresponding connecting plates. The first disc part is fixed to the output shaft of the motor.

[0009] Preferably, discs two are welded to the surfaces of the four sliding rods. Springs are welded to the surfaces of the four discs two. The other ends of the four springs are welded to the ring part.

[0010] Preferably, discs three are welded to the surfaces of the four threaded columns. Handles are welded to the surfaces of the four discs three.

[0011] Preferably, two blowers are installed on the upper surface of the housing of the cooling device by screws. The output ends of the two blowers are both connected to blowing heads. The two blowing heads are both fixedly installed inside the housing of the cooling device. The axes of the two blowing heads form an angle less than ° and the output ends face the central axis of the first disc part.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. For this PET preform controllable temperature local cooling device, by setting the four clamping discs in the clamping assembly, the four clamping discs can be driven by the motor to alternately clamp the PET bottle, so as to cool the area clamped by the fixture, and avoid the phenomenon that the temperature drop of the area clamped by the fixture is too slow, which affects the poor overall cooling uniformity. That is, by the alternating clamping of the four clamping discs, the cooling effect of the two blowing heads on the clamped area can be improved, that is, the uniformity of the cooling of the entire PET preform can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a schematic structural diagram of the whole of the present utility model;

[0016] Figure 2Schematic diagram of the interior of the housing of the cooling device of the present utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram at position A in the present utility model.

[0018] Reference numerals: 1, blower; 2, blowing head; 3, ring member; 4, motor; 5, first disc member; 6, second disc member; 7, spring; 8, sliding rod; 9, connecting plate; 10, convex block; 11, handle; 12, third disc member; 13, threaded column; 14, clamping disc; 15, housing of the cooling device. Detailed implementation manners

[0019] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0021] In the description of the present utility model, terms such as greater than, less than, exceeding, etc. are understood not to include the number itself, and terms such as above, below, within, etc. are understood to include the number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0022] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0023] Please refer to Figures 1-3 , the present utility model provides a technical solution: a PET preform controllable temperature local cooling device, including a housing 15 of the cooling device;

[0024] The clamping assembly is arranged inside the housing 15 of the cooling device. The clamping assembly includes a ring part 3, a first disc part 5, four slide bars 8, four connecting plates 9, two bumpers 10, four threaded columns 13 and four clamping discs 14. The ring part 3 is fixed on the housing 15 of the cooling device. The four slide bars 8 all slide through the ring part 3. The four connecting plates 9 are respectively welded to the corresponding slide bars 8. The four connecting plates 9 all slide only along the surface of the housing 15 of the cooling device. The four threaded columns 13 are respectively threadedly connected to the surfaces of the corresponding connecting plates 9. The four clamping discs 14 are respectively welded to the corresponding threaded columns 13.

[0025] Furthermore, a motor 4 is installed inside the housing 15 of the cooling device by screws. The output shaft of the motor 4 rotates through the housing 15 of the cooling device.

[0026] Furthermore, the two bumpers 10 are welded to both ends of the first disc part 5. The surfaces of the two bumpers 10 are respectively in contact with the surfaces of the corresponding connecting plates 9. The first disc part 5 is fixed to the output shaft of the motor 4.

[0027] Furthermore, discs 6 are welded to the surfaces of the four slide bars 8. Springs 7 are welded to the surfaces of the four discs 6. The other ends of the four springs 7 are welded to the ring part 3.

[0028] Furthermore, discs 12 are welded to the surfaces of the four threaded columns 13. Handles 11 are welded to the surfaces of the four discs 12.

[0029] Furthermore, two blowers 1 are installed on the upper surface of the housing 15 of the cooling device by screws. The output ends of the two blowers 1 are both connected to blowing heads 2. The two blowing heads 2 are both fixedly installed inside the housing 15 of the cooling device. The axes of the two blowing heads 2 form an angle less than 60° and the output ends face the central axis of the first disc part 5.

[0030] It should be noted that: in the initial state, neither of the two bumpers 10 is in contact with the surface of the connecting plate 9, and the four springs 7 are all in a non-energy storage state.

[0031] When it is necessary to cool the PET preforms;

[0032] First, place the PET preforms on the first disc part 5. Subsequently, drive the four handles 11 to move through an external force. The movements of the four handles 11 respectively drive the corresponding discs 12 to move. The movements of the four discs 12 respectively drive the corresponding threaded columns 13 to move. The movements of the four threaded columns 13 respectively drive the corresponding clamping discs 14 to move to clamp the PET preforms.

[0033] Secondly, start the two blowers 1 to blow air into the two blowing heads 2. The air blown by the two blowing heads 2 finally falls onto the PET preforms.

[0034] Meanwhile, start the motor 4. The start of the motor 4 drives the rotation of the first disc member 5. The rotation of the first disc member 5 drives the movement of the two bumps 10. The movement of the two bumps 10 drives the corresponding connecting plates 9 to move respectively. The movement of the two connecting plates 9 drives the corresponding sliding rods 8 to move respectively. The movement of the two sliding rods 8 drives the corresponding second disc members 6 to move away from each other. The movement away from each other of the two second disc members 6 drives the corresponding springs 7 to be stretched respectively. The movement of the two connecting plates 9 drives the corresponding threaded columns 13 to move away from each other. The movement away from each other of the two threaded columns 13 drives the corresponding clamping discs 14 to move away from each other and no longer clamp the PET preforms. At this moment, the other two clamping discs 14 still clamp the PET preforms. During the period when the two clamping discs 14 do not clamp the PET preforms, the two blowing heads 2 can cool the clamping positions. Subsequently, after the two bumps 10 move away from the surfaces of the corresponding connecting plates 9, the two springs 7 reset to drive the corresponding second disc members 6 to move relatively. The relative movement of the two second disc members 6 drives the corresponding sliding rods 8 to move relatively respectively. The relative movement of the two sliding rods 8 drives the corresponding connecting plates 9 to move relatively respectively. The relative movement of the two connecting plates 9 drives the corresponding threaded columns 13 to move relatively respectively. The relative movement of the two threaded columns 13 drives the corresponding clamping discs 14 to move relatively and clamp the PET preforms again. The whole process shows that two of the four clamping discs 14 clamp and two loosen, all four clamp, the clamping disc 14 that clamped last time loosens this time, and the clamping disc 14 that loosened last time clamps this time.

[0035] By arranging the four clamping discs 14 in the clamping assembly, the four clamping discs 14 can be driven by the motor 4 to alternately clamp the PET bottles, so as to cool the area clamped by the fixture, and avoid the phenomenon that the temperature drop of the area clamped by the fixture is too slow, which affects the overall cooling uniformity. That is, the alternate clamping of the four clamping discs 14 can improve the cooling effect of the two blowing heads 2 on the clamping area, that is, improve the cooling uniformity of the whole PET preform.

[0036] By arranging the two blowing heads 2 to cool and lower the temperature of the PET preform in a form with an angle less than 60°, compared with blowing vertically downward, the form with an angle less than 60° of the two blowing heads 2 can enhance the cooling efficiency of the side of the PET preform, thereby expanding the effective cooling area of the two blowing heads 2 and improving the cooling efficiency of the PET preform.

[0037] Working principle:

[0038] When it is necessary to cool the PET preform;

[0039] First, place the PET preform on the first disc member 5. Subsequently, drive the four handles 11 to move through an external force. The movements of the four handles 11 respectively drive the corresponding third disc members 12 to move. The movements of the four third disc members 12 respectively drive the corresponding threaded columns 13 to move. The movements of the four threaded columns 13 respectively drive the corresponding clamping discs 14 to move and clamp the PET preform.

[0040] Secondly, start the two blowers 1 to blow air into the interiors of the two blowing heads 2. The air blown by the two blowing heads 2 finally falls onto the PET preform.

[0041] Meanwhile, start the motor 4. The start of the motor 4 drives the first disc member 5 to rotate. The first disc member 5 drives the two bumps 10 to move. The movements of the two bumps 10 respectively drive the corresponding connecting plates 9 to move. The movements of the two connecting plates 9 respectively drive the corresponding sliding rods 8 to move. The movements of the two sliding rods 8 respectively drive the corresponding second disc members 6 to move away from each other. The movements of the two second disc members 6 away from each other respectively stretch the corresponding springs 7. The movements of the two connecting plates 9 drive the corresponding threaded columns 13 to move away from each other. The movements of the two threaded columns 13 away from each other respectively drive the corresponding clamping discs 14 to move away from each other and no longer clamp the PET preform. At this moment, the other two clamping discs 14 still clamp the PET preform. During the period when the two clamping discs 14 do not clamp the PET preform, the two blowing heads 2 can cool the clamping positions. Subsequently, after the two bumps 10 move away from the surfaces of the corresponding connecting plates 9, the two springs 7 reset and drive the corresponding second disc members 6 to move relatively. The two second disc members 6 respectively drive the corresponding sliding rods 8 to move relatively. The two sliding rods 8 respectively drive the corresponding connecting plates 9 to move relatively. The two connecting plates 9 respectively drive the corresponding threaded columns 13 to move relatively. The two threaded columns 13 respectively drive the corresponding clamping discs 14 to move relatively.

[0042] The above has described the embodiments of the present utility model in detail with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present utility model.

Claims

1. A temperature - controllable local cooling device for PET preforms, characterized in that, Comprising: A cooling device housing (15); A clamping assembly is arranged inside the cooling device housing (15). The clamping assembly includes an annular member (3), a first disc member (5), four slide bars (8), four connecting plates (9), two bumpers (10), four threaded columns (13) and four clamping discs (14). The annular member (3) is fixed to the cooling device housing (15). The four slide bars (8) all slide through the annular member (3). The four connecting plates (9) are respectively welded to the corresponding slide bars (8). The four connecting plates (9) all slide only along the surface of the cooling device housing (15). The four threaded columns (13) are respectively threadedly connected to the surfaces of the corresponding connecting plates (9). The four clamping discs (14) are respectively welded to the corresponding threaded columns (13).

2. The controllable temperature local cooling device for PET preforms according to claim 1, wherein: A motor (4) is installed inside the cooling device housing (15) by screws. The output shaft of the motor (4) rotates through the cooling device housing (15).

3. A locally controllable temperature cooling device for PET preforms according to claim 1, characterized in that: The two bumpers (10) are welded to both ends of the first disc member (5). The surfaces of the two bumpers (10) are respectively in contact with the surfaces of the corresponding connecting plates (9). The first disc member (5) is fixed to the output shaft of the motor (4).

4. A locally controlled temperature cooling device for PET preforms according to claim 1, characterized in that: Disc members two (6) are welded to the surfaces of the four slide bars (8). Springs (7) are welded to the surfaces of the four disc members two (6). The other ends of the four springs (7) are welded to the annular member (3).

5. A locally controllable temperature cooling device for PET preforms according to claim 1, characterized in that: Disc members three (12) are welded to the surfaces of the four threaded columns (13). Handles (11) are welded to the surfaces of the four disc members three (12).

6. A locally controllable temperature cooling device for PET preforms according to claim 1, characterized in that: Two blowers (1) are installed on the upper surface of the cooling device housing (15) by screws. The output ends of the two blowers (1) are both connected to blowing heads (2). The two blowing heads (2) are both fixedly installed inside the cooling device housing (15). The axes of the two blowing heads (2) form an angle less than 60° and the output ends face the central axis of the first disc member (5).

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