Automatic heat dissipation protective cover based on convection

Abstract

The utility model relates to an automatic heat dissipation protective cover based on convection, which comprises a cover body sleeved on the periphery of a material pipe, the cover body is provided with heat dissipation holes, the protective cover further comprises an opening and closing plate and a driving piece, the opening and closing plate moves along the axial direction of the material pipe, and heat dissipation grooves capable of being matched with the heat dissipation holes to form heat dissipation channels are formed in the opening and closing plate. And in the movement of the opening and closing plate, the heat dissipation grooves and the heat dissipation holes are partially or completely aligned and communicated to open the heat dissipation channel, or the heat dissipation grooves and the heat dissipation holes are staggered and spaced to close the heat dissipation channel. On one hand, through the axial movement of the opening and closing plate, the movement stroke is short, and the limitation on the size of the heat dissipation holes can be reduced, so that the heat dissipation area of the heat dissipation holes is increased, and the heat dissipation efficiency is effectively improved; on the other hand, the heat dissipation channel can be automatically opened and closed to achieve heat dissipation or heat insulation, operation is easy and convenient, and the operation safety of equipment can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of protective covers, and in particular relates to an automatic heat dissipation protective cover based on convection. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Injection molding machines are divided into vertical, horizontal and all-electric types. Injection molding machines can heat plastics, apply high pressure to molten plastics, and make them ejected to fill the mold cavity. All-electric injection molding machines are suitable for CNC and high positioning accuracy occasions.

[0003] At present, a sheet metal cover is usually set around the heating material pipe of the injection molding machine to reduce the heat exchange between the material pipe and the cold air outside during the injection molding process, thereby increasing the temperature inside the material pipe and ensuring the stability of the injection molding process. However, after the injection molding is completed, the material pipe cannot dissipate heat in the sheet metal cover, and the material pipe and the sheet metal cover will still maintain a high temperature for a long time. Therefore, the sheet metal cover also needs to have a heat dissipation function. The existing sheet metal cover with heat dissipation function is generally provided with heat dissipation holes extending around the circumferential direction and an opening and closing plate that can be rotated in the circumferential direction to close or open the heat dissipation holes. During operation, the worker manually closes the opening and closing plate to form heat preservation. After the injection molding is completed, the worker manually opens the opening and closing plate to form heat dissipation.

[0004] However, in the actual production process, the existing sheet metal cover has the following defects:

[0005] 1. Considering the rotational activity space required for the opening and closing plate, the size of the heat dissipation holes of the existing sheet metal cover is limited, resulting in a small heat dissipation area and poor heat dissipation efficiency;

[0006] 2. The existing opening and closing plates are not easy to open and close automatically due to equipment limitations. Especially during the injection molding process, when it is detected that the temperature of the material tube is too high, it is necessary to manually open the heat dissipation holes for heat dissipation, which is cumbersome to operate and poses a safety hazard. Summary of the invention

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved automatic heat dissipation protective cover based on convection.

[0008] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0009] A convection-based automatic heat dissipation protective cover, comprising a cover body sleeved on the outer periphery of a material tube, wherein the cover body is provided with heat dissipation holes, and the protective cover also comprises an opening and closing plate and a driving member which move along the axial direction of the material tube, wherein a heat dissipation groove which can match the heat dissipation hole to form a heat dissipation channel is formed on the opening and closing plate, and during the movement of the opening and closing plate, the heat dissipation groove and the heat dissipation hole are partially or completely aligned and connected to open the heat dissipation channel, or the heat dissipation groove and the heat dissipation hole are staggered and spaced to close the heat dissipation channel.

[0010] According to a specific implementation and preferred aspect of the utility model, there are multiple heat dissipation holes and they are spaced apart along the axial direction of the material tube; there are multiple heat dissipation grooves and they are alternately distributed with the multiple heat dissipation holes along the axial direction of the material tube. Here, multiple heat dissipation holes are opened or closed synchronously.

[0011] Preferably, the spacing between two adjacent heat dissipation holes is greater than the width of a single heat dissipation slot. When the heat dissipation channel is closed, each heat dissipation slot is located between two corresponding heat dissipation holes; and / or, when the heat dissipation channel is open, the heat dissipation hole is located in the heat dissipation slot in the radial projection of the material tube. Here, when heat is dissipated, it can be ensured that all the heat dissipation holes are open to ensure heat dissipation efficiency; at the same time, in the working state, the heat dissipation slot is located between adjacent heat dissipation holes, which can prevent heat from escaping from the heat dissipation slot.

[0012] According to another specific implementation and preferred aspect of the utility model, the heat dissipation holes are arranged to extend around the circumference of the material tube.

[0013] Preferably, in the orthographic projection on the axial direction of the material tube, the circumference of the cover body is d1, and the arc length of the heat dissipation hole is d2, wherein 0.3d1≤d2≤0.6d1. Here, the area of ​​the heat dissipation hole is within a reasonable range, which ensures the heat dissipation efficiency while taking into account the strength of the cover body itself and prolonging the service life.

[0014] According to another specific implementation and preferred aspect of the utility model, the opening and closing plate is an arc-shaped plate extending around the circumference of the material tube, wherein the opening and closing plate is in contact with the inner wall or the outer wall of the cover body, thereby facilitating assembly.

[0015] Preferably, a gap is formed between the cover body and the material pipe, and the opening and closing plate is in contact with the inner wall of the cover body, thereby reducing the volume of the cover body and facilitating installation.

[0016] Furthermore, guide posts are provided on opposite sides of the opening and closing plate, and a guide groove extending along the axial direction of the material tube is formed on the cover body. The guide posts are inserted into the guide grooves, and when the heat dissipation channel is opened or closed, the guide posts are located at the corresponding ends of the guide grooves. Hereby, the opening and closing movement of the opening and closing plate is ensured to be stable, and at the same time, two extreme positions of the opening and closing plate can be formed, so that the heat dissipation channel can be accurately opened or closed each time.

[0017] Preferably, an avoidance groove is formed on the cover body, and the driving member is fixedly arranged on the outer side of the cover body and has a connecting portion passing through the avoidance groove and fixedly connected to the opening and closing plate.

[0018] Preferably, the driving member is fixedly arranged on the inner side of the cover body and is fixedly connected to the opening and closing plate.

[0019] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The prior art material pipe cover body has poor heat dissipation efficiency due to the small heat dissipation area of ​​the heat dissipation hole, and the heat dissipation hole is difficult to open and close automatically, and the manual operation is cumbersome and there are safety hazards. The present application designs the structure of the automatic heat dissipation protective cover based on convection as a whole, and cleverly solves the shortcomings and defects of the prior art. After adopting the automatic heat dissipation protective cover based on convection, the heat dissipation groove formed on the opening and closing plate matches the heat dissipation hole formed on the cover body and forms a heat dissipation channel. During the normal injection molding operation, the opening and closing plate is driven by the driving member to move along the axial direction of the material pipe so that the heat dissipation groove and the heat dissipation hole are offset and spaced and the heat dissipation channel is closed; during the heat dissipation process, the opening and closing plate is driven by the driving member to move in the opposite direction along the axial direction of the material pipe so that the heat dissipation groove and the heat dissipation hole are partially or completely aligned and connected to open the heat dissipation channel. Therefore, compared with the prior art, the present invention, on the one hand, can reduce the restriction on the size of the heat dissipation hole through the axial movement of the opening and closing plate, and the movement stroke is short, thereby increasing the heat dissipation area of ​​the heat dissipation hole to effectively improve the heat dissipation efficiency; on the other hand, the heat dissipation channel can be automatically opened and closed to achieve heat dissipation or heat insulation, and the operation is simple and convenient, and the safety of equipment operation can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the automatic heat dissipation protective cover based on convection of the utility model (the heat dissipation channel is open);

[0022] Figure 2 It is a schematic diagram of the structure decomposition of the automatic heat dissipation protective cover based on convection of the utility model;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the automatic heat dissipation protective cover based on convection of the utility model (the heat dissipation channel is closed);

[0024] Wherein: 1. cover body; 10. heat dissipation hole; 11. guide groove; 12. avoidance groove;

[0025] 2. Opening and closing plate; 20. Heat dissipation slot; t. Heat dissipation channel; 21. Guide column;

[0026] 3. driving member; 30. connecting part;

[0027] G. Material pipe. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] like Figures 1 to 3 As shown, the convection-based automatic heat dissipation protective cover of this embodiment includes a cover body 1, an opening and closing plate 2, and a driving member 3.

[0035] Specifically, the cover body 1 is sleeved on the outer circumference of the material pipe G, a gap is formed between the cover body 1 and the material pipe G, and a heat dissipation hole 10 extending around the circumference of the material pipe G is formed on the cover body 1, wherein in the orthographic projection in the axial direction of the material pipe G, the circumference of the cover body 1 is d1, and the arc length of the heat dissipation hole is d2, wherein 0.3d1≤d2≤0.6d1, preferably, d2=0.45d1. As for the connection and fixing method between the cover body 1 and the material pipe G, it is the existing technology and will not be described here.

[0036] In this example, the opening and closing plate 2 can be set to move axially along the material tube G, wherein a heat dissipation groove 20 is formed on the opening and closing plate 2 and can match the heat dissipation hole 10 to form a heat dissipation channel t, and during the movement of the opening and closing plate 2, the heat dissipation groove 20 is partially or completely aligned and connected with the heat dissipation hole 10 to open the heat dissipation channel t, or the heat dissipation groove 20 and the heat dissipation hole 10 are offset and spaced to close the heat dissipation channel t.

[0037] In some specific embodiments, the opening and closing plate 2 is an arc-shaped plate extending circumferentially around the material tube G, wherein the opening and closing plate 2 is in contact with the inner wall or the outer wall of the cover body 1 .

[0038] Taking the case where the opening and closing plate 2 and the inner wall of the cover body 1 are fitted together as an example, guide posts 21 are provided on opposite sides of the opening and closing plate 2, and a guide groove 11 extending along the axial direction of the material tube G is formed on the cover body 1. The guide posts 21 are inserted into the guide groove 11, and when the heat dissipation channel t is opened or closed, the guide posts 21 are located at the corresponding ends of the guide groove 11. That is, when the heat dissipation channel t is opened, the guide posts 21 are located at one end of the guide groove 11, and when the heat dissipation channel t is closed, the guide posts 21 move along the guide groove 11 to the other end.

[0039] For the convenience of implementation, there are multiple heat dissipation holes 10 and they are distributed at intervals along the axial direction of the material tube G, there are multiple heat dissipation grooves 20 and they are alternately distributed with the multiple heat dissipation holes 10 in the axial direction of the material tube G; the spacing between two adjacent heat dissipation holes 10 is greater than the width of a single heat dissipation groove 20, and when the heat dissipation channel t is closed, each heat dissipation groove 20 is located between the corresponding two heat dissipation holes 10; when the heat dissipation channel t is open, in the radial projection of the material tube G, the heat dissipation hole 10 is located in the heat dissipation groove 20.

[0040] In this example, the driving member 3 is fixedly connected to the opening and closing plate 2, and the driving member 3 drives the opening and closing plate 2 to move axially along the material tube G under the control of the injection molding machine computer. The driving member 3 can be any conventional power component, such as a cylinder.

[0041] Specifically, an avoidance groove 12 is formed on the cover body 1 , the driving member 3 is fixedly arranged on the outer side of the cover body 1 , and the output shaft thereof has a connecting portion 30 passing through the avoidance groove 12 and fixedly connected to the opening and closing plate 2 .

[0042] In addition, in some other specific embodiments, the driving member 3 can also be directly fixedly disposed on the inner side of the cover body 1 (ie, the gap formed between the cover body 1 and the material tube G) and fixedly connected to the opening and closing plate 2.

[0043] In summary, after adopting the convection-based automatic heat dissipation protective cover, the heat dissipation grooves formed on the opening and closing plates match the heat dissipation holes formed on the cover body to form a heat dissipation channel. During normal injection molding operations, the opening and closing plates are driven by the driving member to move along the axial direction of the material tube so that the heat dissipation grooves and the heat dissipation holes are misaligned and spaced and the heat dissipation channel is closed; during the heat dissipation process, the opening and closing plates are driven by the driving member to move in the opposite direction along the axial direction of the material tube so that the heat dissipation grooves and the heat dissipation holes are partially or completely aligned and connected to open the heat dissipation channel. Therefore, compared with the prior art, the utility model, on the one hand, can reduce the restrictions on the size of the heat dissipation holes through the axial movement of the opening and closing plates, and the movement stroke is short, thereby increasing the heat dissipation area of ​​the heat dissipation holes to effectively improve the heat dissipation efficiency; on the other hand, the heat dissipation channel It can open and close automatically to achieve heat dissipation or heat insulation, with simple and convenient operation, and can ensure the safety of equipment operation; thirdly, multiple heat dissipation holes can be opened or closed synchronously; fourthly, when dissipating heat, it can ensure that all the heat dissipation holes are open to ensure heat dissipation efficiency; at the same time, in the working state, the heat dissipation groove is located between adjacent heat dissipation holes, which can prevent heat from escaping from the heat dissipation groove; fifthly, the area of ​​the heat dissipation hole is within a reasonable range, which ensures the heat dissipation efficiency while taking into account the strength of the cover body itself and extending the service life; sixthly, through the cooperation of the guide column and the guide groove, the opening and closing movement of the opening and closing plate is guaranteed to be stable, and at the same time, the two extreme positions of the opening and closing plate can be formed, so that the heat dissipation channel can be accurately opened or closed each time.

[0044] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic heat dissipation protective cover based on convection, comprising a cover body sleeved on the outer periphery of a material pipe, wherein the cover body is provided with heat dissipation holes, characterized in that: The protective cover also includes an opening and closing plate and a driving member which move along the axial direction of the material tube, wherein a heat dissipation groove which can match with the heat dissipation hole to form a heat dissipation channel is formed on the opening and closing plate, and during the movement of the opening and closing plate, the heat dissipation groove is partially or completely aligned and connected with the heat dissipation hole to open the heat dissipation channel, or the heat dissipation groove is offset and spaced from the heat dissipation hole to close the heat dissipation channel.

2. The convection-based automatic heat dissipation protective cover according to claim 1, characterized in that: There are a plurality of heat dissipation holes which are spaced apart along the axial direction of the material tube; there are a plurality of heat dissipation grooves which are alternately distributed with the plurality of heat dissipation holes along the axial direction of the material tube.

3. The convection-based automatic heat dissipation protective cover according to claim 2, characterized in that: The distance between two adjacent heat dissipation holes is greater than the width of a single heat dissipation slot, and when the heat dissipation channel is closed, each heat dissipation slot is located between the corresponding two heat dissipation holes; And / or, when the heat dissipation channel is open, in the radial projection of the material pipe, the heat dissipation hole is located inside the heat dissipation groove.

4. The convection-based automatic heat dissipation protective cover according to claim 1, characterized in that: The heat dissipation holes are extended around the circumference of the material tube.

5. The convection-based automatic heat dissipation shield according to claim 4, characterized in that: In the orthographic projection along the axial direction of the material tube, the circumference of the cover body is d1, and the arc length of the heat dissipation hole is d2, wherein 0.3d1≤d2≤0.6d1.

6. The convection-based automatic heat dissipation protective cover according to any one of claims 1 to 5, characterized in that: The opening and closing plate is an arc-shaped plate extending circumferentially around the material tube, wherein the opening and closing plate is in contact with the inner wall or the outer wall of the cover body.

7. The convection-based automatic heat dissipation shield according to claim 6, characterized in that: A gap is formed between the cover body and the material pipe; the opening and closing plate is in contact with the inner wall of the cover body.

8. The convection-based automatic heat dissipation protective cover according to claim 7, characterized in that: Guide columns are provided on opposite sides of the opening and closing plate, and a guide groove extending along the axial direction of the material tube is formed on the cover body. The guide columns are inserted into the guide grooves. When the heat dissipation channel is opened or closed, the guide columns are located at corresponding ends of the guide grooves.

9. The convection-based automatic heat dissipation protective cover according to claim 7, characterized in that: The cover body is formed with an avoidance groove, and the driving member is fixedly arranged on the outer side of the cover body and has a connecting portion passing through the avoidance groove and fixedly connected to the opening and closing plate.

10. The convection-based automatic heat dissipation shield according to claim 7, characterized in that: The driving member is fixedly arranged on the inner side of the cover body and is fixedly connected to the opening and closing plate.

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