Injection mold for refrigerator laminate adjusting plastic part

Abstract

The utility model discloses an injection mold for a refrigerator laminate adjusting plastic part. The injection mold comprises a left mold, a mold core and a right mold, the mold core is relatively fixed, and the left mold and the right mold are correspondingly mounted on the left side and the right side of the mold core in a sliding manner; a left cavity is concavely formed in the left side end surface of the mold core, a left shaping end is convexly formed corresponding to the right side end surface of the left mold, and the left cavity and the left shaping end form a left accommodating space for one of paired symmetrical products to be subjected to injection molding when the left side end surface of the mold core is attached to the right side end surface of the left mold; a right cavity is concavely formed in the right side end surface of the mold core, a right shaping end is convexly formed corresponding to the left side end surface of the right mold, and the right cavity and the right shaping end form a right accommodating space for two paired symmetrical products to be subjected to injection molding when the right side end surface of the mold core is attached to the left side end surface of the right mold. According to the utility model, the material, the temperature, the flow velocity, the environment, the time and the like of symmetrical injection molding products during injection molding can be ensured to be generally consistent, and in addition, the unnecessary manual statistical distribution time can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold for adjusting plastic parts of refrigerator layers. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. Molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry". It is a tool that makes the blank become a part with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The use of a contour shape with a cutting edge can make the blank separate (punch out) according to the contour shape. The use of an inner cavity shape can make the blank obtain a corresponding three-dimensional shape. The mold generally consists of two parts: a movable mold and a fixed mold (or a punch and a die), which can be separated or combined. When separated, the part is taken out, and when closed, the blank is injected into the mold cavity for forming. The mold is a precision tool with a complex shape. It bears the expansion force of the blank and has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0003] However, in the actual production process, when using molds to inject products, we usually encounter many products that are used in pairs of symmetry, such as the plastic parts for adjusting the shelf of refrigerators. Its structure is a symmetrical structure and cannot share the same mold. In this case, different molds are often used to inject products in batches, but this will also cause some problems, because the quality of each batch of injection molded products is affected by materials, temperature, flow rate, environment, time, etc., and the final color and internal structure are differentiated. When different batches of products are paired, this differentiation is even more obvious. In addition, the statistical distribution of products requires a lot of manpower, which is time-consuming and laborious. For this reason, it is necessary to further improve the existing injection molds for such products with paired symmetry, such as the injection molds for adjusting the plastic parts of refrigerator shelves. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide an injection mold for a refrigerator shelf adjustment plastic part. The refrigerator shelf adjustment plastic part includes a pair of left-right symmetrical plastic hangers. The injection mold provided by the utility model can simultaneously injection mold a pair of left-right symmetrical plastic hangers in one mold, and can ensure that the material, temperature, flow rate, environment, time, etc. during injection molding are roughly consistent. In addition, it can reduce unnecessary manual statistical allocation time.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An injection mold for adjusting a plastic part of a refrigerator layer comprises a left mold, a mold core and a right mold; the mold core is relatively fixed, and the left mold and the right mold are slidably mounted on the left and right sides of the mold core;

[0007] The lower end surface of the mold core is fixedly supported on the bottom plate of the frame, and the left and right end surfaces of the mold core are respectively fixedly connected to the left and right plates of the frame through guide positioning columns; the left mold and the right mold are respectively slidably mounted on the guide positioning columns;

[0008] The left end surface of the mold core is slidably fitted with the right end surface of the left mold, and the right end surface of the mold core is slidably fitted with the left end surface of the right mold;

[0009] The left end surface of the mold core is concave with a left cavity, and the right end surface of the corresponding left mold is convex with a left molding end. When the left end surface of the mold core and the right end surface of the left mold are attached, the left cavity and the left molding end form a left accommodating space for one of the symmetrical products to be injection molded;

[0010] The right end surface of the mold core is concave with a right cavity, and the left end surface of the corresponding right mold is convex with a right molding end. When the right end surface of the mold core and the left end surface of the right mold are attached, the right cavity and the right molding end form a right accommodating space for the second symmetrical product to be injection molded;

[0011] A plurality of pouring ports connecting the left cavity and the right cavity are arranged on the upper end surface of the mold core; a heating device accommodating cavity is arranged at the inner center of the mold core, located between the left cavity and the right cavity, and a heating device is arranged in the heating device accommodating cavity.

[0012] Preferably, a left cylinder is fixed on the left side plate of the frame, and the push rod end of the left cylinder is fixedly connected to the left end surface of the left mold; a right cylinder is fixed on the right side plate of the frame, and the push rod end of the right cylinder is fixedly connected to the right end surface of the right mold.

[0013] Preferably, the left cylinder is fixed to the left side plate of the frame through a left cylinder fixing seat, and the push rod end of the left cylinder passes through the left side plate and is fixedly connected to the left push plate with multiple supporting legs fixedly connected to the left end surface of the left mold; the right cylinder is fixed to the right side plate of the frame through a right cylinder fixing seat, and the push rod end of the right cylinder passes through the right side plate and is fixedly connected to the right push plate with multiple supporting legs fixedly connected to the right end surface of the right mold.

[0014] Preferably, the lower end surface of the mold core is fixedly supported on the bottom plate of the frame through main supporting legs.

[0015] Preferably, the opening of the heating device accommodating cavity is arranged on the lower end surface or the front and rear end surfaces of the mold core, and the heating device is an electric heating wire.

[0016] Preferably, one of the paired symmetrical products to be injection molded is a left plastic hanger in a refrigerator shelf adjustment plastic part, and the shape of the left accommodating space is consistent with the shape of the left plastic hanger; the second paired symmetrical product to be injection molded is a right plastic hanger in a refrigerator shelf adjustment plastic part, and the shape of the right accommodating space is consistent with the shape of the right plastic hanger.

[0017] The injection mold in the above embodiment is in a closed mold state when working. When the high-temperature molten plastic enters from several of the multiple pouring ports on the upper end surface of the mold core and is divided through the connecting channels to reach the left cavity and the right cavity respectively, the remaining pouring ports are left without injecting plastic for exhaust. The heating device accommodating cavity located at the center of the inner center of the mold core between the left cavity and the right cavity is equipped with a heating device to keep the high-temperature molten plastic at a corresponding temperature after entering the left cavity and the right cavity through the pouring port, which can remedy the influence of the temperature difference between the left mold, the mold core and the right mold. It affects the speed of mold filling or the melting point of plastic, resulting in uneven molding of products during the injection molding process or blockage of connecting channels, and has the function of improving the stability of product molding performance; when the molten plastic entering the left cavity and the right cavity is solidified and molded after a period of pressure holding, the injection mold is opened, that is, the injection mold is in the mold separation state, and the left cylinder and the right cylinder are respectively controlled here to separate the left mold and the right mold relative to the mold core, and then one of the symmetrical products to be injected, that is, the left plastic hanger, and the other of the symmetrical products to be injected, that is, the right plastic hanger, are taken out respectively.

[0018] The injection mold for refrigerator shelf adjustment plastic parts provided by the utility model can simultaneously injection mold a pair of left-right symmetrical plastic hangers in one mold, and can ensure that the materials, temperature, flow rate, environment, time, etc. during injection molding are roughly consistent. In addition, it can reduce unnecessary manual statistical allocation time. Here, one of the symmetrical products to be injection molded into a pair is the left plastic hanger in the refrigerator shelf adjustment plastic part, and the shape of the left accommodating space is consistent with the shape of the left plastic hanger; the second symmetrical product to be injection molded into a pair is the right plastic hanger in the refrigerator shelf adjustment plastic part, and the shape of the right accommodating space is consistent with the shape of the right plastic hanger. Of course, the shapes of the left accommodating space and the right accommodating space are not limited to this, and they can be the same shape, different shapes, or any symmetrical shapes, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the main view of the injection mold of the utility model in the mold separation state;

[0021] Figure 2 It is a top view of the injection mold of the utility model in the mold separation state;

[0022] Figure 3 It is a left view of the mold core in the injection mold of the utility model;

[0023] Figure 4 It is a right side view of the mold core in the injection mold of the utility model;

[0024] Figure 5 It is a schematic diagram of the mold closing state of the injection mold of the utility model;

[0025] Figure 6 This is a schematic diagram of assembling the plastic parts for adjusting the shelf of the utility model;

[0026] Figure 7 It is a right side view of the left plastic pendant of the utility model;

[0027] Figure 8 It is a left view of the right plastic pendant of the utility model;

[0028] Fig. 9 It is a structural schematic diagram of the layer board of the utility model;

[0029] Fig.10This is a structural schematic diagram of the utility model in which the shelf adjustment plastic part is assembled into the refrigerator storage compartment.

[0030] in:

[0031] 1b. Left cylinder; 2b. Left cylinder fixing seat; 3b. Left push plate; 1c. Right cylinder; 2c. Right cylinder fixing seat; 3c. Right push plate; 4. Main support leg;

[0032] 10. Left plastic hanging piece; 10'. Right plastic hanging piece; 11. Installation part; 12. Shelf adjustment part; 121. Adjustment hole position; 122. Entrance channel;

[0033] 20. Shelf; 21. Shelf surface; 22. Guide protrusion;

[0034] 30. Left mold; A2. Left molding end;

[0035] 40. Mold core; A1. Left cavity; B1. Right cavity; 41. Pouring gate; 42. Heating device accommodating cavity; 43. Heating device;

[0036] 50. Right mold; B2. Right molding end;

[0037] 100. Frame; 100a. Bottom plate; 100b. Left side plate; 100c. Right side plate; 101. Guide and positioning column;

[0038] A. Left accommodation space; B. Right accommodation space. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "middle", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "top", "bottom", "front", "side", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Figure 1 This is the main view of the injection mold of the utility model in the mold separation state; Figure 2 It is a top view of the injection mold of the utility model in the mold separation state; Figure 3 It is a left view of the mold core in the injection mold of the utility model; Figure 4 It is a right side view of the mold core in the injection mold of the utility model; Figure 5 It is a schematic diagram of the mold closing state of the injection mold of the utility model.

[0043] like Figure 1-5 As shown, an injection mold for adjusting plastic parts of refrigerator shelves comprises a left mold 30, a mold core 40 and a right mold 50; the mold core 40 is relatively fixed, and the left mold 30 and the right mold 50 are slidably mounted on the left and right sides of the mold core 40;

[0044] The lower end surface of the mold core 40 is fixedly supported on the bottom plate 100a of the frame 100, and the left and right end surfaces of the mold core 40 are respectively fixedly connected to the left and right side plates 100b and 100c of the frame 100 through the guide positioning columns 101; the left mold 30 and the right mold 50 are respectively slidably mounted on the guide positioning columns 101;

[0045] The left end surface of the mold core 40 is slidably fitted with the right end surface of the left mold 30, and the right end surface of the mold core 40 is slidably fitted with the left end surface of the right mold 50;

[0046] The left end surface of the mold core 40 is concave with a left cavity A1, and the right end surface of the corresponding left mold 30 is convex with a left molding end A2. When the left end surface of the mold core 40 and the right end surface of the left mold 30 are attached, the left cavity A1 and the left molding end A2 form a left accommodating space A for one of the symmetrical products to be injection molded;

[0047] The right end surface of the mold core 40 is concave with a right cavity B1, and the left end surface of the corresponding right mold 50 is convex with a right molding end B2. When the right end surface of the mold core 40 and the left end surface of the right mold 50 are attached, the right cavity B1 and the right molding end B2 form a right accommodating space B for the second symmetrical product to be injection molded;

[0048] The upper end face of the mold core 40 is provided with a plurality of pouring ports 41 connecting the left cavity A1 and the right cavity B1; the inner center of the mold core 40 is located between the left cavity A1 and the right cavity B1 and a heating device accommodating cavity 42 is provided, and a heating device 43 is provided in the heating device accommodating cavity 42.

[0049] Preferably, a left cylinder 1b is fixed on the left side plate 100b of the frame 100, and the push rod end of the left cylinder 1b is fixedly connected to the left end surface of the left mold 30; a right cylinder 1c is fixed on the right side plate 100c of the frame 100, and the push rod end of the right cylinder 1c is fixedly connected to the right end surface of the right mold 50.

[0050] Preferably, the left cylinder 1b is fixed to the left side plate 100b of the frame 100 through the left cylinder fixing seat 2b, and the push rod end of the left cylinder 1b passes through the left side plate 100b and is fixedly connected to the left push plate 3b with multiple supporting legs fixedly connected to the left end surface of the left mold 30; the right cylinder 1c is fixed to the right side plate 100c of the frame 100 through the right cylinder fixing seat 2c, and the push rod end of the right cylinder 1c passes through the right side plate 100c and is fixedly connected to the right push plate 3c with multiple supporting legs fixedly connected to the right end surface of the right mold 50.

[0051] Preferably, the lower end surface of the mold core 40 is fixedly supported on the bottom plate 100 a of the frame 100 through the main supporting legs 4 .

[0052] Preferably, the opening of the heating device accommodating cavity 42 is arranged on the lower end surface or the front and rear end surfaces of the mold core 40, and the heating device 43 is an electric heating wire.

[0053] The injection mold in the above embodiment is in a mold closing state when working. Figure 5 As shown, when the high-temperature molten plastic enters from several of the multiple pouring ports 41 on the upper side end surface of the mold core 40 and is divided through the connecting passages to reach the left cavity A1 and the right cavity B1, the remaining pouring ports 41 are left unfilled for exhaust, and the heating device accommodating cavity 42 of the mold core 40, which is located at the center of the left cavity A1 and the right cavity B1, is equipped with a heating device 43 to keep the high-temperature molten plastic at a corresponding temperature after entering the left cavity A1 and the right cavity B1 through the pouring port 41. This can remedy the problem that the injection molding process causes uneven molding of the product or blockage of the connecting passage due to the different temperatures of the left mold 30, the mold core 40 and the right mold 50, which affects the speed of mold filling or the melting degree of the plastic, and has the effect of improving the stability of the product molding performance; when the molten plastic entering the left cavity A1 and the right cavity B1 is solidified and molded after a period of pressure holding, as shown in FIG. Figure 1As shown, the injection mold is opened, that is, the injection mold is in the mold separation state, and the left cylinder 1b and the right cylinder 1c are controlled respectively to separate the left mold 30 and the right mold 50 relative to the mold core 40, and then one of the symmetrical products to be injection molded and the other of the symmetrical products to be injection molded are taken out respectively.

[0054] Figure 6 This is a schematic diagram of assembling the plastic parts for adjusting the shelf of the utility model; Figure 7 It is a right side view of the left plastic pendant of the utility model; Figure 8 It is a left view of the right plastic pendant of the utility model; Fig. 9 It is a structural schematic diagram of the layer board of the utility model; Fig.10 This is a structural schematic diagram of the utility model in which the shelf adjustment plastic part is assembled into the refrigerator storage compartment.

[0055] like Figure 6-10 As shown, the refrigerator layer adjustment plastic part using the above injection mold includes a pair of left plastic hangers 10 and right plastic hangers 10' that are bilaterally symmetrical and a plurality of layer plates 20 connected between the left plastic hangers 10 and right plastic hangers 10' that are bilaterally symmetrical;

[0056] The upper and lower ends of the left plastic hanger 10 and the right plastic hanger 10' are respectively bent at right angles twice inside and outside to form a step-shaped mounting portion 11, and the hollow flat surface portion located between the upper and lower mounting portions 11 is a layer plate adjustment portion 12, and the layer plate adjustment portion 12 is provided with at least two groups of vertically connected adjustment holes 121, and the layer plate adjustment portion 12 is also provided with an entrance channel 122 connected to the series of adjustment holes 121;

[0057] The layer plate 20 includes a layer plate face 21 and guide protrusions 22 located at left and right ends of the layer plate face 21, at least one end of which can adjust the left and right width relative to the plate face 21;

[0058] The diameter of the guide protrusion 22 is larger than the width of the inlet channel 122 and the diameter of the adjustment hole 121 .

[0059] Preferably, the guide protrusion 22 at one end of the left and right ends of the layer panel face 21 can adjust the left and right width relative to the panel face 21, and the guide protrusion 22 at the other end is fixedly connected to the panel face 21. Here, the guide protrusion 22 at one end is fixedly installed relative to the layer panel face 21, and the guide protrusion 22 at the other end is movably installed relative to the layer panel face 21, so that the user can centrally control and adjust one end when installing the entire layer panel 20, so that both ends do not need to be controlled at the same time and the operation is not good.

[0060] Here, by installing the left and right symmetrical plastic hangers 10 and 10' on the opposite left and right side walls inside the refrigerator storage compartment, and then adjusting the guide protrusions 22 to determine the left and right widths of the appropriate number of shelves 20 and installing them one by one between the left and right symmetrical plastic hangers 10 and 10', the guide protrusions 22 at the left and right ends of the shelf 20 are connected along the entrance channels 122 on the left and right plastic hangers 10 and 10', respectively, and are engaged in the adjustment holes 121 of the appropriate height. In this way, the height of the shelf of the refrigerator storage compartment is adjusted within a certain range to adapt to the storage of food of different volumes and to adapt to the size of different refrigeration spaces, that is, it is applied to refrigerators of different volumes.

[0061] The injection mold for refrigerator shelf adjustment plastic parts provided by the utility model can simultaneously injection mold a pair of left-right symmetrical plastic hangers in one mold, and can ensure that the materials, temperature, flow rate, environment, time, etc. during injection molding are roughly consistent. In addition, it can reduce unnecessary manual statistical allocation time. Here, one of the symmetrical products to be injection molded is the left plastic hanger 10 in the refrigerator shelf adjustment plastic parts, and the shape of the left accommodating space A is consistent with the shape of the left plastic hanger 10; the second symmetrical product to be injection molded is the right plastic hanger 10' in the refrigerator shelf adjustment plastic parts, and the shape of the right accommodating space B is consistent with the shape of the right plastic hanger 10'. Of course, the shapes of the left accommodating space A and the right accommodating space B are not limited to this, and they can be the same shape, different shapes, or any symmetrical shapes, etc.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An injection mold for adjusting plastic parts of refrigerator shelves, characterized in that: It comprises a left mold, a mold core and a right mold; the mold core is relatively fixed, and the left mold and the right mold are slidably installed on the left and right sides of the mold core; The lower end surface of the mold core is fixedly supported on the bottom plate of the frame, and the left and right end surfaces of the mold core are respectively fixedly connected to the left and right plates of the frame through guide positioning columns; the left mold and the right mold are respectively slidably mounted on the guide positioning columns; The left end surface of the mold core is slidably fitted with the right end surface of the left mold, and the right end surface of the mold core is slidably fitted with the left end surface of the right mold; The left end surface of the mold core is concave with a left cavity, and the right end surface of the corresponding left mold is convex with a left molding end. When the left end surface of the mold core and the right end surface of the left mold are attached, the left cavity and the left molding end form a left accommodating space for one of the symmetrical products to be injection molded; The right end surface of the mold core is concave with a right cavity, and the left end surface of the corresponding right mold is convex with a right molding end. When the right end surface of the mold core and the left end surface of the right mold are attached, the right cavity and the right molding end form a right accommodating space for the second symmetrical product to be injection molded; A plurality of pouring ports connecting the left cavity and the right cavity are arranged on the upper end surface of the mold core; a heating device accommodating cavity is arranged at the inner center of the mold core, located between the left cavity and the right cavity, and a heating device is arranged in the heating device accommodating cavity.

2. The injection mold for adjusting the plastic part of the refrigerator layer as claimed in claim 1, characterized in that: A left cylinder is fixed on the left side plate of the frame, and a push rod end of the left cylinder is fixedly connected to the left end surface of the left mold; a right cylinder is fixed on the right side plate of the frame, and a push rod end of the right cylinder is fixedly connected to the right end surface of the right mold.

3. The injection mold for adjusting the plastic part of the refrigerator layer as claimed in claim 2, characterized in that: The left cylinder is fixed to the left side plate of the frame through a left cylinder fixing seat, and the push rod end of the left cylinder passes through the left side plate and is fixedly connected to the left push plate with multiple supporting legs fixedly connected to the left end surface of the left mold; the right cylinder is fixed to the right side plate of the frame through a right cylinder fixing seat, and the push rod end of the right cylinder passes through the right side plate and is fixedly connected to the right push plate with multiple supporting legs fixedly connected to the right end surface of the right mold.

4. The injection mold for adjusting the plastic part of the refrigerator layer as claimed in claim 1, characterized in that: The lower side end surface of the mold core is fixedly supported on the bottom plate of the frame through main supporting legs.

5. The injection mold for adjusting the plastic part of the refrigerator layer as claimed in claim 1, characterized in that: The opening of the heating device accommodating cavity is arranged on the lower side end surface or the front and rear side end surfaces of the mold core.

6. The injection mold for adjusting the plastic part of the refrigerator layer as claimed in claim 5, characterized in that: The heating device is an electric heating wire.

7. The injection mold for adjusting the plastic part of the refrigerator layer as claimed in any one of claims 1 to 6, characterized in that: One of the symmetrical products to be injection molded is a left plastic hanger in the refrigerator shelf adjustment plastic part, and the shape of the left accommodating space is consistent with the shape of the left plastic hanger; the second symmetrical product to be injection molded is a right plastic hanger in the refrigerator shelf adjustment plastic part, and the shape of the right accommodating space is consistent with the shape of the right plastic hanger.

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