A mold for injection molding filter plate handle

Abstract

The present invention discloses a mold for injection molding a filter plate handle, comprising: a movable mold, a fixed mold, a bolt hole mold core, and a core pull; the bolt hole mold core is cylindrical and has two, and the core pull is conical and has two or three. When the filter plate handle is injection molded, the first mold cavity of the movable mold and the fixed mold constitutes the base of the filter plate handle, and the second mold cavity constitutes the main body of the filter plate handle; the bolt hole mold core groove runs through the first mold cavity to form a bolt hole on the base of the filter plate handle; the core pull groove is provided with a conical core pull to form a cavity of the filter plate handle that extends from the side of the base into the main body. The present invention has the following beneficial effects: no secondary processing is required, the surface is smooth, the strength is higher, the appearance is more beautiful, the weight is reduced, the cost is reduced, and the mold processing is simple.

Description

Technical Field

[0001] The invention belongs to the field of filter presses, and in particular relates to a mold for injection molding a filter plate handle. Background Art

[0002] The filter plate handle is a component installed on the filter plate. The filter plate is the main filtering element of the filter press. The filter plate handle is installed on both sides of the filter plate so that the filter plate can be placed on the main beam of the filter press. The filter plate handle is usually injection molded. The filter plate handle is used in large quantities. In order to reduce costs and reduce the weight of the handle, irregular grooves are usually set on the surface of the filter plate handle, which requires processing the corresponding contour on the inside of the injection mold of the filter plate handle.

[0003] First, the contour of the inside of the mold affects the flow of plastic during injection, causing local defects in the filter plate handle, which is unsightly, reduces strength and even produces waste. Secondly, the filter plate handles are used in large quantities and in many specifications, and the mold consumption is large. The complex contour of the inside of the mold causes a large amount of mold processing and high cost. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the above-mentioned background technology and to provide a mold for injection molding a filter plate handle, comprising: a movable mold, a fixed mold, a bolt hole mold core, and a pulling core; the bolt hole mold core is cylindrical and has two, the pulling core is conical and has two or three, and the length of the pulling core is adjusted according to the size of the filter plate handle.

[0005] The mold cavities of the movable mold and the fixed mold are symmetrical structures, and are provided with injection holes, exhaust holes, ejection holes, and positioning platforms. They are also provided with: a first mold cavity, a second mold cavity, a bolt hole core groove, and a core pulling groove; when the filter plate handle is injection molded, the first mold cavity of the movable mold and the fixed mold constitutes the base of the filter plate handle, and the second mold cavity constitutes the main body of the filter plate handle; there are two bolt hole core grooves that pass through the first mold cavity. When the filter plate handle is injection molded, the bolt hole core is placed in the bolt hole core groove to form a bolt hole on the base of the filter plate handle; the core pulling groove has two or three according to the size of the filter plate handle. When the filter plate handle is injection molded, the core pulling groove is placed with a conical core pulling groove to form a cavity of the filter plate handle that extends from the side of the base to the main body.

[0006] Preferably, the bolt hole core of the mold is a stepped cylindrical shape, so that the bolt hole of the injection molded filter plate handle is stepped. The filter plate handle is installed using hexagonal bolts, and the bolt caps are sunk into the large holes to prevent material accumulation on the bolt caps. The filter plate handle is also more beautiful.

[0007] Preferably, the mold is also provided with a third bolt hole core groove, which runs through the first mold cavity and the second mold cavity, and a third bolt hole core is placed in the groove, and the third bolt hole core is a stepped cylindrical shape.

[0008] Preferably, the top end of the mold core is hemispherical, which facilitates the extraction of the mold core and the flow of plastic.

[0009] Preferably, a boss is provided at the bottom end of the conical core puller to facilitate pulling the core puller out from the injection-molded filter plate handle.

[0010] The mold for the injection molded filter plate handle of the present invention is simple to process and has good strength. During the injection molding process, the plastic has better fluidity. The injection molded filter plate handle does not require secondary processing, has a smooth outer surface, higher strength, and is more beautiful. It reduces weight and costs, and the mold processing is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of an injection mold according to Embodiment 1 of the present invention.

[0012] Figure 2 Schematic diagram of the injection mold and mold core of the first embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram of the injection mold of the second embodiment of the present invention.

[0014] Figure 4 Schematic diagram of the injection mold and mold core of the second embodiment of the present invention.

[0015] Figure 5 The figure is a schematic diagram of a filter plate handle injection molded by using the injection mold of the present invention.

[0016] In the figure: 1. base; 2. main body; 3. bolt hole; 4. cavity; 5. third bolt hole; 6. movable mold / fixed mold; 61. first mold cavity; 62. second mold cavity; 63. bolt hole core groove; 64. core pulling groove; 65. third bolt hole core groove; 7. bolt hole core; 8. core pulling; 81. boss; 9. third bolt hole core. DETAILED DESCRIPTION

[0017] In order to provide a further understanding and recognition of the structural features and effects achieved by the present invention, preferred embodiments and drawings are provided in conjunction with detailed descriptions.

[0018] Embodiment 1

[0019] like Figure 1 , Figure 2 , Figure 5As shown, the mold cavity of the movable mold / fixed mold 6 is a symmetrical structure, and is provided with an injection hole, an exhaust hole, an ejection hole, and a positioning platform (not shown in the figure), and is also provided with: a first mold cavity 61, a second mold cavity 62, a bolt hole mold core groove 63, and a core pulling groove 64; when the filter plate handle is injection-molded, the first mold cavity 61 of the movable mold / fixed mold 6 constitutes the base 1 of the filter plate handle, and the second mold cavity 62 constitutes the main body 2 of the filter plate handle; the bolt hole mold core groove 63 has two, which penetrate the first mold cavity 61. When the filter plate handle is injection-molded, the bolt hole mold core 7 is placed in the bolt hole mold core groove 63, and the bolt hole mold core 7 is a stepped cylindrical shape to form a bolt hole 3 on the filter plate handle base 1; the core pulling groove 64 has two or three according to the size of the filter plate handle. When the filter plate handle is injection-molded, the core pulling groove 64 is placed with a core pulling 8, and the core pulling 8 is conical and has a hemispherical top. A boss 81 is provided at the bottom of the core pulling 8 to form a cavity 4 that penetrates from the side of the base 1 into the main body 2.

[0020] Embodiment 2

[0021] like Figure 3 , Figure 4 , Figure 5 As shown, the mold cavity of the movable mold / fixed mold 6 is a symmetrical structure, and is provided with an injection hole, an exhaust hole, an ejection hole, and a positioning platform (not shown in the figure), and is also provided with: a first mold cavity 61, a second mold cavity 62, a bolt hole mold core groove 63, a core pulling groove 64, and a third bolt hole mold core groove 65; when the filter plate handle is injection molded, the first mold cavity 61 of the movable mold / fixed mold 6 constitutes the base 1 of the filter plate handle, and the second mold cavity 62 constitutes the main body 2 of the filter plate handle; the bolt hole mold core groove 63 has two, penetrating the first mold cavity 61, when the filter plate handle is injection molded, the bolt hole mold core 7 is placed in the bolt hole mold core groove 63, and the bolt hole mold core 7 is a stepped cylindrical shape, forming a bolt hole 3 on the filter plate handle base 1; the core pulling groove 64 has two or three according to the size of the filter plate handle. When the filter plate handle is injection molded, the core pulling groove 64 is placed with a core pulling 8, and the core pulling 8 is conical and has a hemispherical top, A boss 81 is provided at the bottom end of the core pulling 8 to form a cavity 4 extending from the side of the base 1 into the main body 2; a third bolt hole core groove 65, the third bolt hole core groove 65 passes through the first cavity 61 and the second cavity 62, and when the filter plate handle is injection molded, the third bolt hole core 9 is placed in the third bolt hole core groove 65, and the third bolt hole core 9 is a stepped cylindrical shape to form a third bolt hole 5 on the filter plate handle.

Claims

1. A mold for injection molding a filter plate handle, characterized in that: include: A movable mold, a fixed mold, a bolt hole mold core, and a core pull; the bolt hole mold core is cylindrical and has two, the core pull is conical and has three, and the core pull can adjust the length according to the size of the filter plate handle; the mold cavities of the movable mold and the fixed mold are symmetrical structures, and are provided with injection holes, exhaust holes, ejection holes, and positioning tables, and are also provided with: a first mold cavity, a second mold cavity, a bolt hole mold core groove, and a core pull groove; when the filter plate handle is injection molded, the first mold cavity of the movable mold and the fixed mold constitutes the base of the filter plate handle, and the second mold cavity constitutes the main body of the filter plate handle; there are two bolt hole mold core grooves, which pass through the first mold cavity When the filter plate handle is injection molded, the bolt hole core is placed in the bolt hole core groove to form a bolt hole on the base of the filter plate handle; the core pulling groove has two or three parts according to the size of the filter plate handle. When the filter plate handle is injection molded, a conical core is placed in the core pulling groove to form a cavity where the filter plate handle extends from the side of the base into the main body; the bolt hole core is a stepped cylindrical shape; a third bolt hole core groove is also provided, and the third bolt hole core groove passes through the first cavity and the second cavity, and a third bolt hole core is placed in the groove, and the third bolt hole core is a stepped cylindrical shape.

2. The mold for injection molding a filter plate handle according to claim 1, characterized in that: The top end of the core pulling is hemispherical.

3. The mold for injection molding a filter plate handle according to claim 1, characterized in that: A boss is arranged at the bottom end of the conical core pulling device.

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