Cooling equipment for plastic product injection molding

Abstract

The utility model provides cooling equipment for injection molding of plastic products, which belongs to the technical field of plastic processing and comprises a cooling box, a ventilation opening formed in the top of the cooling box and a protective net fixedly connected to the top of the cooling box and matched with the ventilation opening for use. And the cooling mechanism comprises a servo motor adaptively mounted on the outer surface of the cooling box and a connecting shaft fixedly connected to the output of the servo motor through a coupler. According to the plastic mold cooling device, through cooperation of all parts in the cooling mechanism, the impeller can be driven to continuously rotate to cool the plastic mold, the rotating assembly can be driven to drive the plastic mold to intermittently rotate in the cooling process, it is guaranteed that all the parts of the plastic mold can evenly make contact with a cooling medium, and the cooling efficiency is improved. And the situation that a plastic product is deformed and cracked due to non-uniform cooling caused by thermal stress concentration due to overlarge local temperature difference of the plastic mold is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, and specifically relates to a cooling device for injection molding of plastic products. Background Technology

[0002] The main function of cooling equipment for injection molding of plastic products is to accelerate the cooling of the mold and the product during the injection molding process, ensuring that the product can be quickly shaped while maintaining good physical properties and dimensional stability. Through effective cooling, the transformation speed of plastic from molten to solid state can be accelerated, thereby shortening the time of each injection cycle and improving production efficiency. Appropriate cooling helps to prevent problems such as deformation, shrinkage cavities or surface defects in the product, ensuring that the finished product has good appearance quality and mechanical strength.

[0003] A prior art patent, CN220576552U, describes an air-cooled structure for injection molding in plastic processing. This structure includes an air-cooling box with an internal air-cooling mechanism. A fixing groove is formed on the lower surface of the outer wall of the air-cooling box, and a storage drawer is movably connected to the inner wall of the fixing groove. A handle is provided on one side of the outer wall of the storage drawer, and a cooling mold storage container is located on one side of the lower outer wall of the air-cooling box. This device uses fans to simultaneously cool the injection mold inside the hollowed-out container from both the top and bottom, rapidly cooling the mold's interior. However, in actual use, relying solely on two fans for heat dissipation may result in ineffective heat dissipation on the lateral sides. This uneven cooling leads to inconsistent cooling rates in different parts of the injection molded product, causing uneven distribution of thermal stress. Consequently, the plastic product may warp, twist, or deform during cooling, affecting the dimensional accuracy and appearance quality of the final product. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for injection molding of plastic products, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cooling device for injection molding of plastic products includes a support mechanism, a cooling box, a vent at the top of the cooling box, and a protective net fixedly connected to the top of the cooling box and used in conjunction with the vent.

[0007] The cooling mechanism includes a servo motor adapted to be installed on the outer surface of the cooling box, a connecting shaft fixedly connected to the output of the servo motor via a coupling, a first pulley fixedly sleeved on the outer surface of the connecting shaft, a belt sleeved on the outer surface of the first pulley, a second pulley sleeved on the inner surface of the other end of the belt, a drive shaft fixedly connected to the inner surface of the second pulley, a first bevel gear fixedly sleeved on the outer surface of the drive shaft, a second bevel gear meshing with the outer surface of the first bevel gear, a transmission shaft fixedly connected to the inner surface of the second bevel gear, an impeller fixedly installed at the through end of the transmission shaft, and a rotating assembly disposed on the inner surface of the cooling box.

[0008] In a preferred embodiment of this utility model, the end of the connecting shaft away from the servo motor is fixedly mounted on the outer surface of the cooling box via a bearing, and the outer surface of the transmission shaft is in rotatable contact with the inner surface of the cooling box.

[0009] As a preferred embodiment of the present invention, the rotating assembly includes a turntable fixedly sleeved on the outer surface of the connecting shaft, a drive column fixedly connected to the outer surface of the turntable, and a brake disc fixedly installed on the outer surface of the turntable on the side away from the drive column.

[0010] As a preferred embodiment of the present invention, the rotating assembly further includes a support shaft rotatably connected to the inner surface of the cooling box, a grooved wheel fixedly connected to one end of the support shaft, and a drive block fixedly connected to the other end of the support shaft.

[0011] As a preferred embodiment of this utility model, the surface of the grooved wheel is provided with a groove for use with the drive column and a groove for use with the brake disc.

[0012] As a preferred embodiment of this utility model, the rotating assembly further includes a handwheel rotatably connected to the inner surface of the cooling box on the side away from the connecting shaft, a threaded rod fixedly installed on the outer end face of the handwheel, an internal threaded column threadedly connected to the outer surface of the threaded rod, and a driven block rotatably sleeved on the outer end face of the internal threaded column and used in conjunction with the driving block.

[0013] As a preferred embodiment of this utility model, the cooling mechanism further includes a limiting strip fixedly connected to the outer surface of the internal threaded column, and a limiting plate fixedly installed on the inner wall of the cooling box and used in conjunction with the limiting strip, wherein the outer surface of the limiting strip slides in contact with the inner wall of the groove on the surface of the limiting plate.

[0014] As a preferred embodiment of the present invention, the cooling mechanism further includes a fixing block fixedly connected to the bottom of the cooling box, the outer surface of the drive shaft rotatably contacts the inner surface of the fixing block, and the outer surface of the transmission shaft rotatably contacts the inner surface of the fixing block on the other side.

[0015] Compared with the prior art, the beneficial effects of this utility model are: through the cooperation between the components in the cooling mechanism, not only can the impeller be driven to rotate continuously to cool the plastic mold, but the rotating component can also be driven to rotate the plastic mold intermittently during the cooling process, ensuring that all parts of the plastic mold can be in uniform contact with the cooling medium, avoiding thermal stress concentration caused by excessive local temperature differences in the plastic mold, which ultimately leads to deformation and cracks in the plastic products due to uneven cooling. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the local structure at point A;

[0019] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the local structure at point B;

[0020] Figure 4 This is a schematic diagram of the internal structure of the cooling box in this utility model;

[0021] Figure 5 This utility model Figure 4 A magnified schematic diagram of the local structure at point C.

[0022] In the diagram: 100, bearing mechanism; 101, cooling box; 102, vent; 103, protective net; 200, cooling mechanism; 201, servo motor; 202, connecting shaft; 203, first pulley; 204, belt; 205, second pulley; 206, drive shaft; 207, first bevel gear; 208, second bevel gear; 209, transmission shaft; 210, impeller; 211, rotating assembly; 211a, turntable; 211b, drive column; 211c, brake disc; 211d, support shaft; 211e, grooved wheel; 211f, drive block; 211g, handwheel; 211h, threaded rod; 211i, internal threaded column; 211j, driven block; 211k, limit bar; 211l, limit plate; 212, fixing block; T, injection mold. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Example

[0027] Reference Figures 1-5 This embodiment of the present invention provides a cooling device for injection molding of plastic products, which enables the plastic mold T to rotate intermittently during the cooling process, so as to ensure that all parts of the plastic mold T can be in uniform contact with the cooling medium.

[0028] The support structure 100 includes a cooling box 101, a vent 102 opened on the top of the cooling box 101, and a protective net 103 fixedly connected to the top of the cooling box 101 and used in conjunction with the vent 102.

[0029] It should be noted that the vent 102 allows hot air to be effectively exhausted from the cooling box 101, and the protective net 103 prevents foreign objects from entering the cooling box 101 through the vent 102 and adversely affecting the cooling of the plastic mold T.

[0030] The cooling mechanism 200 includes a servo motor 201 adapted to be installed on the outer surface of the cooling box 101, a connecting shaft 202 fixedly connected to the output of the servo motor 201 via a coupling, a first belt reel 203 fixedly sleeved on the outer surface of the connecting shaft 202, a belt 204 sleeved on the outer surface of the first belt reel 203, a second belt reel 205 sleeved on the inner surface of the other end of the belt 204, a drive shaft 206 fixedly connected to the inner surface of the second belt reel 205, a first bevel gear 207 fixedly sleeved on the outer surface of the drive shaft 206, a second bevel gear 208 meshing with the outer surface of the first bevel gear 207, a transmission shaft 209 fixedly connected to the inner surface of the second bevel gear 208, an impeller 210 fixedly installed at the through end of the transmission shaft 209, and a rotating assembly 211 disposed on the inner surface of the cooling box 101.

[0031] It should be noted that the cooperation of the servo motor 201, connecting shaft 202, first belt pulley 203 and belt 204 can drive the second belt pulley 205 to rotate synchronously. Then, through the cooperation of the second belt pulley 205, drive shaft 206 and first bevel gear 207, the second bevel gear 208, transmission shaft 209 and impeller 210 are driven to rotate synchronously. The continuous rotation of impeller 210 cools the injection mold T inside the cooling box 101. The rotating component 211 can make the mold T rotate intermittently during the cooling process.

[0032] Specifically, the end of the connecting shaft 202 away from the servo motor 201 is fixedly mounted on the outer surface of the cooling box 101 by a bearing, and the outer surface of the transmission shaft 209 is in rotatable contact with the inner surface of the cooling box 101.

[0033] Furthermore, the rotating assembly 211 includes a turntable 211a fixedly sleeved on the outer surface of the connecting shaft 202, a drive column 211b fixedly connected to the outer surface of the turntable 211a, and a brake disc 211c fixedly installed on the outer surface of the turntable 211a on the side away from the drive column 211b.

[0034] It should also be noted that when the turntable 211a rotates, it can drive the drive column 211b and the brake disc 211c to rotate synchronously.

[0035] Preferably, the rotating assembly 211 further includes a support shaft 211d rotatably connected to the inner surface of the cooling box 101, a grooved wheel 211e fixedly connected to one end of the support shaft 211d, and a drive block 211f fixedly connected to the other end of the support shaft 211d.

[0036] It should be noted that the surface of the grooved wheel 211e is provided with a U-shaped groove for use with the drive column 211b and a C-shaped groove for use with the brake disc 211c.

[0037] When the drive column 211b rotates into the U-shaped groove, it can drive the grooved wheel 211e to rotate. When the drive column 211b rotates out of the U-shaped groove, the brake disc 211c will simultaneously rotate into the C-shaped groove to limit the grooved wheel 211e and prevent the grooved wheel 211e from continuing to rotate due to inertial force.

[0038] Furthermore, the rotating assembly 211 also includes a handwheel 211g rotatably connected to the inner surface of the cooling box 101 on the side away from the connecting shaft 202, a threaded rod 211h fixedly installed on the outer end face of the handwheel 211g, an internal threaded post 211i threadedly connected to the outer surface of the threaded rod 211h, and a driven block 211j rotatably sleeved on the outer end face of the internal threaded post 211i and used in conjunction with the drive block 211f.

[0039] Specifically, the cooling mechanism 200 also includes a limiting strip 211k fixedly connected to the outer surface of the internal threaded post 211i, and a limiting plate 211l fixedly installed on the inner wall of the cooling box 101 and used in conjunction with the limiting strip 211k. The outer surface of the limiting strip 211k slides in contact with the inner wall of the groove on the surface of the limiting plate 211l.

[0040] It needs to be explained that turning the handwheel 211g can drive the threaded rod 211h to rotate synchronously. The groove on the surface of the limiting plate 211l limits the limiting strip 211k, so that the limiting strip 211k limits the internal threaded column 211i. Thus, the rotation of the threaded rod 211h causes the driven block 211j to move linearly.

[0041] Preferably, the cooling mechanism 200 further includes a fixing block 212 fixedly connected to the bottom of the cooling box 101, the outer surface of the drive shaft 206 rotatably contacts the inner surface of the fixing block 212, and the outer surface of the transmission shaft 209 rotatably contacts the inner surface of the fixing block 212 on the other side.

[0042] In use, the injection mold T is moved to the center position of the drive block 211f and the driven block 211j. The handwheel 211g is rotated to drive the threaded rod 211h to rotate synchronously. The groove on the surface of the limiting plate 211l limits the limiting strip 211k, so that the limiting strip 211k limits the internal threaded post 211i. Thus, the rotation of the threaded rod 211h drives the driven block 211j to move linearly. Through the cooperation of the drive block 211f and the driven block 211j, the injection mold T is clamped and fixed.

[0043] The servo motor 201 is turned on, which drives the connecting shaft 202 to rotate. The connecting shaft 202 then drives the first belt disc 203 to rotate synchronously with the turntable 211a. Through the cooperation of the first belt disc 203 and the belt 204, the second belt disc 205, the drive shaft 206, and the first bevel gear 207 are driven to rotate synchronously. The first bevel gear 207 then drives the second bevel gear 208, the transmission shaft 209, and the impeller 210 to rotate synchronously. The continuous rotation of the impeller 210 cools the injection mold T inside the cooling box 101.

[0044] During the continuous rotation of the turntable 211a, the drive column 211b and the brake disc 211c rotate synchronously. When the drive column 211b rotates into the U-shaped groove, it drives the grooved wheel 211e, the support shaft 211d and the drive block 211f to rotate. Through the cooperation of the drive block 211f and the driven block 211j, the plastic mold T rotates synchronously. When the drive column 211b rotates out of the U-shaped groove, the brake disc 211c will synchronously rotate into the C-shaped groove to limit the grooved wheel 211e and prevent the grooved wheel 211e from driving the support shaft 211d to continue rotating due to inertial force.

[0045] In summary, through the cooperation of the various components in the cooling mechanism 200, not only can the impeller 210 be driven to rotate continuously to cool the plastic mold T, but the rotating component 210 can also be driven to rotate the plastic mold T intermittently during the cooling process. This ensures that all parts of the plastic mold T can be in uniform contact with the cooling medium, avoiding thermal stress concentration caused by excessive local temperature differences in the plastic mold T, which could ultimately lead to deformation and cracks in the plastic product due to uneven cooling.

[0046] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0047] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0048] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cooling device for injection molding of plastic products, characterized in that: include, The supporting structure (100) includes a cooling box (101), a vent (102) opened on the top of the cooling box (101), and a protective net (103) fixedly connected to the top of the cooling box (101) and used in conjunction with the vent (102); The cooling mechanism (200) includes a servo motor (201) adapted to be installed on the outer surface of the cooling box (101), a connecting shaft (202) fixedly connected to the output of the servo motor (201) via a coupling, a first pulley (203) fixedly sleeved on the outer surface of the connecting shaft (202), a belt (204) sleeved on the outer surface of the first pulley (203), a second pulley (205) sleeved on the inner surface of the other end of the belt (204), and a cooling mechanism (205) fixedly connected to the outer surface of the cooling box (101). The drive shaft (206) on the inner surface of the two belt discs (205), the first bevel gear (207) fixedly sleeved on the outer surface of the drive shaft (206), the second bevel gear (208) meshing with the outer surface of the first bevel gear (207), the transmission shaft (209) fixedly connected to the inner surface of the second bevel gear (208), the impeller (210) fixedly installed at the through end of the transmission shaft (209), and the rotating assembly (211) disposed on the inner surface of the cooling box (101).

2. The cooling device for injection molding of plastic products according to claim 1, characterized in that: The end of the connecting shaft (202) away from the servo motor (201) is fixedly mounted on the outer surface of the cooling box (101) by a bearing, and the outer surface of the transmission shaft (209) is in rotatable contact with the inner surface of the cooling box (101).

3. A cooling device for injection molding plastic products according to claim 2, characterized in that: The rotating assembly (211) includes a turntable (211a) fixedly sleeved on the outer surface of the connecting shaft (202), a drive column (211b) fixedly connected to the outer surface of the turntable (211a), and a brake disc (211c) fixedly installed on the outer surface of the turntable (211a) on the side away from the drive column (211b).

4. A cooling device for injection molding of plastic products according to claim 3, characterized in that: The rotating assembly (211) further includes a support shaft (211d) rotatably connected to the inner surface of the cooling box (101), a grooved wheel (211e) fixedly connected to one end of the support shaft (211d), and a drive block (211f) fixedly connected to the other end of the support shaft (211d).

5. A cooling device for injection molding plastic products according to claim 4, characterized in that: The surface of the grooved wheel (211e) is provided with a U-shaped groove for use with the drive column (211b) and a C-shaped groove for use with the brake disc (211c).

6. A cooling device for injection molding plastic products according to claim 5, characterized in that: The rotating assembly (211) further includes a handwheel (211g) rotatably connected to the inner surface of the cooling box (101) on the side away from the connecting shaft (202), a threaded rod (211h) fixedly installed on the outer end face of the handwheel (211g), an internal threaded post (211i) threadedly connected to the outer surface of the threaded rod (211h), and a driven block (211j) rotatably sleeved on the outer end face of the internal threaded post (211i) and used in conjunction with the driving block (211f).

7. A cooling device for injection molding plastic products according to claim 6, characterized in that: The cooling mechanism (200) further includes a limiting strip (211k) fixedly connected to the outer surface of the internal threaded post (211i), and a limiting plate (211l) fixedly installed on the inner wall of the cooling box (101) and used in conjunction with the limiting strip (211k). The outer surface of the limiting strip (211k) slides in contact with the inner wall of the groove on the surface of the limiting plate (211l).

8. A cooling device for injection molding plastic products according to claim 7, characterized in that: The cooling mechanism (200) also includes a fixing block (212) fixedly connected to the bottom of the cooling box (101), the outer surface of the drive shaft (206) rotatably contacts the inner surface of the fixing block (212), and the outer surface of the transmission shaft (209) rotatably contacts the inner surface of the fixing block (212) on the other side.

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