Inner exhaust structure for preventing waste materials

Abstract

The utility model aims to provide a waste material prevention internal exhaust structure which comprises a template, a profile groove is formed in the template, an exhaust groove, a material retention groove and an air release groove which are communicated in sequence are further formed in the template, the exhaust groove is communicated with the profile groove, the air release groove is used for being communicated with the outside, an adjusting hole is further formed in the inner side wall of the air release groove, and an adjusting column is in threaded connection with the interior of the adjusting hole. The adjusting columns are used for adjusting sectional areas of the air leakage grooves. Thus, by rotating the adjusting column, the flowing-out speed of gas in the profile groove through the exhaust groove, the material blocking groove and the gas release groove can be changed, and the best exhaust speed can be obtained through rapid adjustment during mold adjustment trial production or normal production, so that the problem that materials are discharged along with too high exhaust speed can be effectively avoided; and meanwhile, the problem that gas in the profile groove is not exhausted in time due to too low exhaust speed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming moulds, in particular to an internal exhaust structure for preventing waste materials. Background Art

[0002] The mold for foam molding is a plastic foaming mold. The foaming resin is directly filled into the mold, which is heated and melted to form a gas-liquid saturated solution. Through nucleation, a large number of tiny bubble nuclei are formed, and the bubble nuclei grow to make foam plastic parts.

[0003] Foam molds typically consist of an interlocking upper and lower molds, which together enclose a mold cavity. Plastic is injected into the cavity to form the foamed part. Because air remains in the cavity after the upper and lower molds are engaged, it is important to ensure that the air can escape from the gap between the upper and lower molds as the plastic is injected, allowing the plastic to completely fill the cavity.

[0004] In the existing foaming mold, a groove with a single structure is opened on the surface of the upper mold / lower mold, wherein the groove is connected to the mold cavity, so that the gas in the mold cavity can be discharged along the groove. However, this groove with a single structure has the following defects in actual production: since the depth of the groove cannot be changed, that is, the gas outflow rate cannot be adjusted, as the plastic is filled into the mold cavity, the pressure in the mold cavity is high, and two undesirable situations are prone to occur. One is that the gas discharge speed is fast, which means that the plastic will also be discharged along the groove, resulting in material waste; the other is that the gas discharge speed is slow, which means that the gas in the mold cavity cannot be discharged in time, and the plastic has already filled the mold cavity, which will cause potholes to appear on the surface of the molded foam workpiece. Therefore, it is necessary to repeatedly repair the mold to ensure that the groove has an appropriate depth to ensure that the gas can be discharged in time, while preventing the plastic from being discharged along the groove. This results in a long mold trial cycle, which seriously affects the efficiency of normal production. In order to solve the above problems, the anti-waste internal exhaust structure of the present application is proposed. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide an internal exhaust structure which can ensure that the gas in the mold cavity is discharged in time and prevent the plastic from being discharged along the groove and causing material waste.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A structure for preventing waste material from exhausting, comprising a template, wherein the template is provided with a groove:

[0008] The template is also provided with an exhaust groove, a material retention groove and an air relief groove which are connected in sequence. The exhaust groove is connected to the molding groove, and the air relief groove is used to communicate with the outside world. An adjustment hole is also provided on the inner side wall of the air relief groove, and an adjustment column is screwed into the adjustment hole. The adjustment column is used to adjust the cross-sectional area of ​​the air relief groove.

[0009] Optionally, the cross-sectional area of ​​the material retention groove is larger than the cross-sectional area of ​​the exhaust groove and the cross-sectional area of ​​the air release groove.

[0010] Optionally, the cross-sectional area of ​​the exhaust groove gradually increases along the direction from the profile groove to the material retention groove.

[0011] Optionally, the depth of the exhaust groove gradually increases along the direction from the profile groove to the material retention groove.

[0012] Optionally, there are two air relief grooves, the two air relief grooves are respectively connected to the two ends of the material retention groove, and the air exhaust groove is connected to the middle of the material retention groove.

[0013] Optionally, two adjusting columns are provided, and the two adjusting columns are respectively located in the two air relief grooves.

[0014] Optionally, a rounded corner portion is provided at one end of the air release trough close to the material retention trough.

[0015] Optionally, a bending portion is provided at one end of the air relief groove close to the rounded corner portion.

[0016] Optionally, the anti-waste material internal exhaust structure also includes a forming plate, and a cavity groove is opened on the forming plate. When the forming plate is buckled with the template, the cavity groove and the mold groove together form a mold cavity.

[0017] Compared with the prior art, the present invention has at least the following advantages:

[0018] The utility model discloses an anti-waste material exhaust structure, comprising a template, a mold groove is provided on the template, and an exhaust groove, a material retention groove and an air release groove are connected in sequence on the template, the exhaust groove is connected to the mold groove, the air release groove is used to communicate with the outside world, and an adjustment hole is provided on the inner side wall of the air release groove, an adjustment column is screwed into the adjustment hole, and the adjustment column is used to adjust the cross-sectional area of ​​the air release groove. In this way, by rotating the adjustment column, the outflow speed of the gas in the mold groove through the exhaust groove, the material retention groove and the air release groove can be changed. When the mold is adjusted for trial production or normal production, the optimal exhaust speed can be quickly adjusted to obtain the optimal exhaust speed, thereby effectively avoiding the problem of the exhaust speed being too fast and the material being discharged, and at the same time avoiding the problem of the exhaust speed being too slow and the gas in the mold groove not being discharged in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of an exhaust structure for preventing waste materials in one embodiment of the present invention;

[0021] Figure 2 for Figure 1 The explosion structure diagram of the exhaust structure inside the anti-explosion material is shown;

[0022] Figure 3 for Figure 1 The cross-sectional structural diagram of the exhaust structure inside the anti-waste material is shown.

[0023] Description of reference numerals:

[0024] 10. Anti-waste material exhaust structure; 100. Template; 110. Forming groove; 120. Exhaust groove; 130. Material retention groove; 140. Air release groove; 150. Adjustment hole; 200. Adjustment column; 141. Fillet; 142. Bending part; 300. Forming plate; 310. Cavity groove. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply 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 invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0028] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0029] like Figures 1 to 3 As shown, an anti-waste material internal exhaust structure 10 includes a template 100, a mold groove 110 is opened on the template 100, and an exhaust groove 120, a material retention groove 130 and an air discharge groove 140 which are connected in sequence are opened on the template 100. The exhaust groove 120 is connected with the mold groove 110, and the air discharge groove 140 is used to communicate with the outside world. An adjustment hole 150 is also opened on the inner side wall of the air discharge groove 140, and an adjustment column 200 is screwed in the adjustment hole 150. The adjustment column 200 is used to adjust the cross-sectional area of ​​the air discharge groove 140.

[0030] It should be noted that the groove 110 defined in the template 100 is a concave structure for forming a foamed workpiece. The groove 110 can be designed to a corresponding shape depending on the specific structure of the foamed workpiece. Furthermore, the template 100 is provided with an exhaust groove 120, a material retention groove 130, and an air relief groove 140, located on the same side as the groove 110. The exhaust groove 120, material retention groove 130, and air relief groove 140 are sequentially interconnected, with the exhaust groove 120 communicating with the groove 110. The air relief groove 140 is provided for communication with the outside world. Furthermore, an adjustment hole 150 is defined at the location of the air relief groove 140, into which an adjustment post 200 is threadedly mounted. This arrangement allows the adjustment post 200 to block the air relief groove 140. By rotating the adjustment post 200, the distance between the end face of the adjustment post 200 and the surface of the template 100 can be adjusted, as can the cross-sectional area of ​​the air relief groove 140 communicating with the outside world. In this way, by rotating the adjustment column 200, the outflow speed of the gas in the mold groove 110 through the exhaust groove 120, the material retention groove 130, and the air release groove 140 can be changed. When the mold is adjusted for trial production or normal production, the optimal exhaust speed can be quickly adjusted to obtain the best exhaust speed, thereby effectively avoiding the problem of the exhaust speed being too fast and the material being discharged with it, and at the same time avoiding the problem of the exhaust speed being too slow and the gas in the mold groove 110 not being discharged in time. In addition, it should be emphasized that by opening the material retention groove 130 between the exhaust groove 120 and the air release groove 140, it can be ensured that during the mold adjustment process, once the material flows out along the exhaust groove 120, it will enter the material retention groove 130, which can avoid the material from clogging the air release groove 140 and ensure that the gas can be discharged smoothly.

[0031] like Figures 1 to 3 As shown, in one embodiment, the cross-sectional area of ​​the material retention groove 130 is larger than the cross-sectional area of ​​the exhaust groove 120 and the cross-sectional area of ​​the air release groove 140 .

[0032] This ensures that during trial runs or full production, if material in the mold groove 110 overflows from the vent groove 120, it is retained in the material retention groove 130, preventing it from clogging the vent groove 140 and ensuring normal mold production. It should be noted that if material is retained in the material retention groove 130, it means that the exhaust speed is too fast. Therefore, the exhaust speed can be adjusted by rotating the adjustment column 200 to adjust the maximum inner diameter of the gas exhaust.

[0033] like Figures 1 to 3 As shown, in one embodiment, the cross-sectional area of ​​the exhaust groove 120 gradually increases along the direction from the profile groove 110 to the material retention groove 130 .

[0034] Thus, when the material in the groove 110 flows into the venting groove 120 , the cross-sectional area of ​​the venting groove 120 gradually increases toward the material retention groove 130 , thereby ensuring that the material will not be blocked in the venting groove 120 but will smoothly enter the material retention groove 130 and be retained.

[0035] like Figures 1 to 3 As shown, in one embodiment, the depth of the exhaust groove 120 gradually increases along the direction from the profile groove 110 to the material retention groove 130 .

[0036] Furthermore, the surface of the template 100 is a planar structure, and the depth of the exhaust groove 120 increases along the direction from the molding groove 110 to the material retention groove 130, which means that the inner bottom wall of the exhaust groove 120 is an inclined downward structure along the direction close to the material retention groove 130. In this way, when the material in the molding groove 110 enters the exhaust groove 120, the material smoothly enters the material retention groove 130 along the inclined exhaust groove 120.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, there are two air relief grooves 140, which are respectively connected to the two ends of the material retention groove 130, and the exhaust groove 120 is connected to the middle of the material retention groove 130. Two adjusting columns 200 are provided, and the two adjusting columns 200 are respectively located in the two air relief grooves 140.

[0038] It should be noted that to facilitate fine-tuning of the cross-sectional area of ​​the air vent 140, two air vents 140 are provided, each connected to the opposite ends of the material retention tank 130. Thus, by adjusting the adjustment pins 200 within each air vent 140, the cross-sectional area of ​​each air vent 140 can be adjusted, thereby quickly achieving the optimal exhaust speed.

[0039] like Figure 1 and Figure 2 As shown, in one embodiment, a rounded corner portion 141 is provided at one end of the air release groove 140 close to the material retention groove 130 .

[0040] It should be noted that the rounded corner 141 is provided at the connection position between the air release groove 140 and the material retention groove 130 to improve the smoothness of gas flowing from the material retention groove 130 into the air release groove 140 and ensure that the gas is smoothly discharged from the material retention groove 130 through the air release groove 140.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, a bent portion 142 is provided at one end of the air release groove 140 close to the rounded corner portion 141 .

[0042] It should be noted that the bending portion 142 is provided to prevent the exhaust groove 120, the material retention groove 130, and the air release groove 140 from being distributed along a straight line. When the material flows from the profile groove 110 into the exhaust groove 120, the material will not directly rush into the air release groove 140 due to inertia, but will be reliably retained in the material retention groove 130.

[0043] like Figure 3 As shown, in one embodiment, the anti-waste material internal exhaust structure 10 also includes a forming plate 300, and a cavity 310 is provided on the forming plate 300. When the forming plate 300 is buckled with the template 100, the cavity 310 and the mold groove 110 together form a mold cavity.

[0044] It should be noted that the template 100 and the forming plate 300 interlock to form a mold cavity. The venting groove 120, material retention groove 130, and air release groove 140 only need to be provided on one side of the template 100; it is not necessary to provide these structures on both the forming plate 300 and the template 100. When the forming plate 300 and the template 100 interlock, the venting groove 120, material retention groove 130, and air release groove 140 are all obscured by the forming plate 300, forming a channel structure. This facilitates the removal of material from the material retention groove 130 if it becomes trapped.

[0045] It should be noted that the structures of the mold groove 110 and cavity groove 310 used to form the foamed workpiece shown in this application are examples provided to facilitate description of their connection relationship with the exhaust groove 120 and are not intended to limit the structure of the foamed workpiece. Furthermore, this application aims to provide a specific structure for exhausting gas within the mold cavity during injection. Therefore, other structures of the mold are not within the scope of protection of this application. Therefore, a partial structural diagram of the mold is provided to clearly illustrate the structure for exhausting the mold cavity that requires protection in this application.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in the present invention can be understood to include but not be limited to locking and fixing with screws / screws and welding. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A structure for preventing waste material from exhausting, comprising a template with a groove formed thereon, characterized in that: The template is also provided with an exhaust groove, a material retention groove and an air relief groove which are connected in sequence. The exhaust groove is connected to the molding groove, and the air relief groove is used to communicate with the outside world. An adjustment hole is also provided on the inner side wall of the air relief groove, and an adjustment column is screwed into the adjustment hole. The adjustment column is used to adjust the cross-sectional area of ​​the air relief groove.

2. The exhaust structure for preventing waste material from leaking according to claim 1, characterized in that: The cross-sectional area of ​​the material retention groove is larger than the cross-sectional area of ​​the exhaust groove and the cross-sectional area of ​​the air release groove.

3. The exhaust structure for preventing waste material from leaking according to claim 1, characterized in that: The cross-sectional area of ​​the exhaust groove gradually increases along the direction from the profile groove to the material retention groove.

4. The exhaust structure for preventing waste material from leaking according to claim 3, characterized in that: The depth of the exhaust groove gradually increases along the direction from the profile groove to the material retention groove.

5. The exhaust structure for preventing waste material from leaking according to claim 1, characterized in that: There are two air release grooves, which are respectively communicated with two ends of the material retention groove, and the air exhaust groove is communicated with the middle part of the material retention groove.

6. The exhaust structure for preventing waste material from leaking according to claim 5, characterized in that: There are two adjusting columns, and the two adjusting columns are respectively located in the two air relief grooves.

7. The exhaust structure for preventing waste material from leaking according to claim 4, characterized in that: The air release groove is provided with a rounded corner portion at one end close to the material retention groove.

8. The exhaust structure for preventing waste material from leaking according to claim 7, characterized in that: A bending portion is provided at one end of the air release groove close to the rounded corner portion.

9. The exhaust structure for preventing waste material from leaking according to claim 1, characterized in that: The anti-waste material internal exhaust structure also includes a forming plate, which is provided with a cavity. When the forming plate is buckled with the template, the cavity and the mold groove together form a mold cavity.

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