Heat exchange cooling injection mold

Abstract

The invention relates to the technical field of injection molds, in particular to a heat exchange cooling injection mold which comprises a lower mold assembly and an upper mold assembly, and cooling water enters a middle pipe opening of the bottom of a folding pipe through a square pipe arranged in the middle and a connecting pipe arranged in the middle; cooling water symmetrically flows to a left end bottom pipe opening and a right end bottom pipe opening of the folding pipe through a bottom middle pipe opening of the folding pipe, the bottom ends of the square pipes arranged at the left end and the right end are communicated with a backflow pipe of an external circulating cooling water path system, and the front end of the air guide branch pipe is fixedly communicated with an air conveying pipeline of an external cooling fan. And air enters the sleeve through the interior of the air guide fork pipe, is exhausted through the air holes formed in the sleeve and is exhausted through the breathable cushion layer arranged in the front end vertical plate, so that rapid cooling treatment on injection molding plastic liquid-solid in the injection mold is formed. And the heat exchange cooling efficiency of the injection molding liquid is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a heat exchange cooling injection mold. Background Art

[0002] Injection molds are supporting equipment for plastic processing machinery and plastic molding machines. They can solidify the size of plastic products through injection molding, prepare workpiece products through the cooperation of injection molding glue and injection molds, and have the effect of cooling and shaping the injection molded products through auxiliary cooling equipment.

[0003] Taking the injection mold for preparing workpiece products by injecting plastic liquid as an example, some injection molds use relatively simple built-in water cooling pipes to cool the side walls of the injection mold, resulting in low heat exchange cooling efficiency of the injection liquid, affecting the curing molding rate of the injection molded product. Therefore, a heat exchange cooling injection mold is proposed to address the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a heat exchange cooling injection mold, which is used to solve the problem that some injection molds use relatively simple built-in water cooling pipes to cool the side walls of the injection mold, resulting in low heat exchange cooling efficiency for the injection molding liquid, affecting the curing molding rate of the injection molded product.

[0005] To achieve the above object, the present invention provides the following technical solutions: A heat exchange cooling injection mold comprises a lower mold assembly and an upper mold assembly, wherein an upper mold assembly is arranged on the top of the lower mold assembly, and the lower mold assembly comprises a cavity shell, a vertical plate, an air guide fork tube, a pad, a column, a lower arc plate, a screw cover, a lower mold shell, a carrier plate, a square tube, a connecting tube, a folded tube, a sleeve and a breathable cushion layer, wherein the vertical plates are symmetrically distributed and fixedly arranged at the front and rear ends of the cavity shell, and an air guide fork tube is fixedly arranged inside the vertical plate arranged at the front end, the top of the pad is fixedly arranged with the bottom of the vertical plate, and the top of the pad is fixedly arranged with A column rod, a lower arc plate is fixedly provided on the outer side of the column rod, the top of the column rod is threadedly assembled with the inner wall of the bottom end of the screw cover, a lower mold shell is fixedly provided on the top of the cavity shell, a carrier plate is fixedly provided inside the bottom end of the cavity shell, a square tube is fixedly provided inside the carrier plate, a connecting tube is fixedly connected to the top of the square tube, the top of the connecting tube is fixedly connected to the pipe opening at the bottom end of the folded tube, the inner wall of the cavity shell is fixedly provided to the outer side of the folded tube, a sleeve is fixedly connected to the rear end of the air guide fork tube, and a breathable cushion layer is fixedly connected to the inside of the vertical plate.

[0006] Preferably, the upper mold assembly includes an upper mold shell, an upper arc plate, a feed pipe, a cylinder device, a table plate and an anchor plate. The upper arc plate is symmetrically fixed on the outer side of the upper mold shell, the feed pipe is fixed inside the upper mold shell, the cylinder device is fixed on the top of the upper mold shell, the table plate is fixed on the top of the cylinder device, and anchor plates are symmetrically fixed on the front and rear ends of the table plate.

[0007] Preferably, the circular groove provided inside the upper arc plate is slidably arranged with the outer side of the pole.

[0008] Preferably, the front end of the air guide fork pipe is fixedly connected to the air supply pipeline of the external cooling fan, the bottom end of the square tube arranged in the middle is fixedly connected to the input pipe of the external circulating cooling water system, and the bottom ends of the square tube arranged at the left and right ends are fixedly connected to the return pipe of the external circulating cooling water system.

[0009] Preferably, air holes are symmetrically distributed on the outer side of the sleeve, and the inner sides of the vertical plates arranged at the front and rear ends are fixed to the carrier plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, cooling water enters the middle pipe opening at the bottom of the folded pipe through the square pipe and the connecting pipe arranged in the middle, and the cooling water flows symmetrically to the bottom pipe opening at the left end and the bottom pipe opening at the right end of the folded pipe through the middle pipe opening at the bottom of the folded pipe, and the cooling water flows out through the bottom ends of the folded pipe arranged at the left and right ends, the bottoms of the connecting pipes arranged at the left and right ends, and the bottoms of the square pipes arranged at the left and right ends, and the bottoms of the square pipes arranged at the left and right ends are connected with the return pipes of the external circulating cooling water system, and the front end of the air guide fork pipe is fixedly connected with the air pipeline of the external cooling fan, and the air enters the inside of the sleeve through the inside of the air guide fork pipe, and the air is discharged through the air holes opened in the sleeve, and the outer side of the folded pipe and the inner wall of the cavity shell are blown and cooled, and the air is discharged through the air permeable cushion layer arranged inside the front end vertical plate, so as to form a rapid cooling treatment for the solidified injection molding liquid inside the injection mold, and through the above-mentioned arrangement, the heat exchange cooling efficiency of the injection molding liquid is accelerated by the composite mode of water cooling and air blowing cooling, and the curing molding rate of the injection molding product is affected; 2. In the present invention, the through holes opened inside the anchor plate and the anchor holes opened on the external prefabricated plate are assembled and set by means of external anchor rods, the cylinder device is started, and the cylinder device drives the upper mold shell, the upper arc plate and the feed pipe to move downward, and the top of the feed pipe is connected to the injection molding pipeline with a booster pump and a solenoid valve, the booster pump and the solenoid valve arranged inside the injection molding pipeline are started at the same time, the glue inside the injection molding pipeline is transported to the bottom of the feed pipe, and the injection molding glue is squeezed into the lower mold shell through the bottom of the feed pipe, and then the booster pump and the solenoid valve arranged inside the injection molding pipeline are closed at the same time, and the cylinder device continues to be started, and the cylinder device drives the upper mold shell, the upper arc plate and the feed pipe to move downward, and the injection molding glue inside the lower mold shell is extruded and molded through the upper mold shell. Through the above arrangement, it is convenient to vertically align the upper mold shell and the lower mold shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the upper and lower split structure of the device of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of some components of the lower mold assembly of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the lower mold shell of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure at A; Figure 6 For the present invention Figure 4 Schematic diagram of the structure at B; Figure 7 It is a schematic diagram of the cross-sectional structure of the cavity shell of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at C; Fig. 9 It is a schematic diagram of the cross-sectional structure of the cavity shell and the vertical plate of the present invention; Fig.10 For the present invention Fig. 9 Schematic diagram of the structure at D; Fig.11 It is a schematic diagram of the cross-sectional structure of the upper mold shell and the table plate of the present invention.

[0012] In the figure: 1. lower mold assembly; 101. cavity shell; 102. vertical plate; 103. air guide fork tube; 104. pad; 105. column rod; 106. lower arc plate; 107. screw cap; 108. lower mold shell; 109. carrier plate; 110. square tube; 111. connecting tube; 112. folding tube; 113. sleeve; 114. breathable cushion layer; 2. upper mold assembly; 21. upper mold shell; 22. upper arc plate; 23. feed pipe; 24. cylinder device; 25. table plate; 26. anchor plate. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] In the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limitations of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Similarly, similar words such as "one", "an", or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Similar words such as "include" or "comprises" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0015] In addition, in the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, 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.

[0016] See also Figure 1-11 , the present invention provides a technical solution: A heat exchange cooling injection mold comprises a lower mold component 1 and an upper mold component 2. The upper mold component 2 is arranged on the top of the lower mold component 1. The lower mold component 1 comprises a cavity shell 101, a vertical plate 102, an air guide fork tube 103, a pad 104, a column 105, a lower arc plate 106, a screw cover 107, a lower mold shell 108, a carrier plate 109, a square tube 110, a connecting tube 111, a folded tube 112, a sleeve 113 and a breathable cushion layer 114. The front and rear ends of the cavity shell 101 are symmetrically distributed and fixedly provided with the vertical plates 102. The air guide fork tube 103 is fixedly provided inside the vertical plate 102 arranged at the front end. The top of the pad 104 is fixedly provided with the bottom of the vertical plate 102. The pad 104 A column rod 105 is fixedly provided at the top, a lower arc plate 106 is fixedly provided on the outer side of the column rod 105, the top of the column rod 105 is threadedly assembled with the inner wall of the bottom end of the screw cover 107, a lower mold shell 108 is fixedly provided on the top of the cavity shell 101, a carrier plate 109 is fixedly provided inside the bottom end of the cavity shell 101, a square tube 110 is fixedly provided inside the carrier plate 109, a connecting tube 111 is fixedly connected to the top of the square tube 110, the top of the connecting tube 111 is fixedly connected to the bottom end of the folded tube 112, the inner wall of the cavity shell 101 is fixedly provided to the outer side of the folded tube 112, a sleeve 113 is fixedly connected to the rear end of the air guide fork tube 103, and a breathable cushion layer 114 is fixedly connected to the inside of the vertical plate 102.

[0017] The upper mold assembly 2 includes an upper mold shell 21, an upper arc plate 22, a feed pipe 23, a cylinder device 24, a table plate 25 and an anchor plate 26. The upper arc plate 22 is symmetrically fixed on the outer side of the upper mold shell 21, the feed pipe 23 is fixed inside the upper mold shell 21, the cylinder device 24 is fixed on the top of the upper mold shell 21, the table plate 25 is fixed on the top of the cylinder device 24, and the anchor plates 26 are symmetrically fixed on the front and rear ends of the table plate 25. Through the above arrangement, the through holes opened in the anchor plate 26 and the anchor holes opened in the external prefabricated plate are assembled and arranged by external anchor rods.

[0018] The circular groove formed inside the upper arc plate 22 is slidably arranged with the outer side of the column rod 105. Through the above arrangement, the upper mold shell 21 and the lower mold shell 108 are conveniently extruded and limited vertically.

[0019] The front end of the air guide fork pipe 103 is fixedly connected to the air supply pipeline of the external cooling fan, the bottom end of the square tube 110 arranged in the middle is fixedly connected to the input pipe of the external circulating cooling water system, and the bottom ends of the square tube 110 arranged at the left and right ends are fixedly connected to the return pipe of the external circulating cooling water system. Through the above arrangement, it is convenient for the cooling water to flow inside the folded tube 112 for cooling, and the air is blown and cooled on the outer side of the folded tube 112 and the inner wall of the cavity shell 101, and the air is discharged through the breathable cushion layer 114 arranged inside the front end vertical plate 102.

[0020] The outer side of the sleeve 113 is symmetrically provided with air holes, and the inner sides of the vertical plates 102 arranged at the front and rear ends are fixedly arranged with the carrier plate 109 . Through the above arrangement, the air is discharged through the air holes opened in the sleeve 113 .

[0021] Working process: The present invention provides a heat exchange cooling injection mold, which performs die-casting on the injection molding liquid inside the lower mold shell 108, and accelerates the heat exchange cooling efficiency of the injection molding liquid through a composite method of water cooling and air blowing cooling.

[0022] Manually reverse the screw cap 107 until the screw cap 107 is out of contact with the top of the column 105, slide the circular groove opened inside the upper arc plate 22 and the outer side of the column 105, and then manually rotate the screw cap 107 so that the screw cap 107 and the top of the column 105 are threadedly assembled.

[0023] The through holes opened inside the anchor plate 26 and the anchor holes opened on the external prefabricated plate are assembled and set by external anchor rods, and the cylinder device 24 is started. The cylinder device 24 drives the upper mold shell 21, the upper arc plate 22 and the feed pipe 23 to move downward until the bottom of the feed pipe 23 is located at a height of 25-35mm inside the lower mold shell 108, and the top of the feed pipe 23 is connected to the injection molding pipeline with a booster pump and a solenoid valve. The booster pump and the solenoid valve arranged inside the injection molding pipeline are started at the same time, and the glue inside the injection molding pipeline is transported to the bottom of the feed pipe 23, and the injection molding glue is squeezed into the lower mold shell 108 through the bottom of the feed pipe 23. Then the booster pump and the solenoid valve arranged inside the injection molding pipeline are closed at the same time, and the cylinder device 24 continues to start, and the cylinder device 24 drives the upper mold shell 21, the upper arc plate 22 and the feed pipe 23 to move downward, and the injection molding glue inside the lower mold shell 108 is extruded through the upper mold shell 21.

[0024] The bottom end of the square tube 110 arranged in the middle is connected to the input pipe of the external circulating cooling water system, and the cooling water enters from the bottom end of the square tube 110 arranged in the middle, and the cooling water enters the bottom middle pipe opening of the folded tube 112 through the square tube 110 arranged in the middle and the connecting pipe 111 arranged in the middle. The cooling water flows symmetrically to the bottom pipe opening at the left end and the bottom pipe opening at the right end of the folded tube 112 through the bottom middle pipe opening of the folded tube 112, and the cooling water flows out through the bottom ends of the folded tubes 112 arranged at the left and right ends, the bottoms of the connecting pipes 111 arranged at the left and right ends, and the bottoms of the square tubes 110 arranged at the left and right ends. The bottom end of the square tube 110 is connected to the return pipe of the external circulating cooling water system, and the front end of the air guide fork tube 103 is fixedly connected to the air supply pipeline of the external cooling fan. The air enters the sleeve 113 through the inside of the air guide fork tube 103, and the air is discharged through the air holes opened in the sleeve 113. The outside of the folded tube 112 and the inner wall of the cavity shell 101 are blown and cooled, and the air is discharged through the breathable cushion layer 114 arranged inside the front end vertical plate 102, thereby forming a rapid cooling treatment for the solid injection molded plastic inside the injection mold, wherein the above-mentioned external circulating cooling water system is an existing cooling circulation system.

[0025] The heat of the injection molding liquid is cooled by heat exchange with cooling water on the inner wall of the folded tube 112 through the bottom of the lower mold shell 108 and the top of the cavity shell 101. The lower mold shell 108 and the cavity shell 101 are made of copper with good thermal conductivity, and the folded tube 112 is made of carbon fiber with good thermal conductivity.

[0026] The cylinder device 24 provided in the device, the booster pump and solenoid valve provided inside the injection molding pipeline, and the external cooling fan fixedly connected to the front end of the air guide fork pipe 103 are all controlled and processed by an external PLC controller, and the cylinder device 24, the booster pump and solenoid valve provided inside the injection molding pipeline, and the external cooling fan fixedly connected to the front end of the air guide fork pipe 103 are all electrically connected to an external power supply.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchange cooling injection mold, comprising a lower mold assembly (1) and an upper mold assembly (2), characterized in that: An upper mold assembly (2) is arranged on the top of the lower mold assembly (1), and the lower mold assembly (1) comprises a cavity shell (101), a vertical plate (102), an air guide fork tube (103), a pad (104), a column rod (105), a lower arc plate (106), a screw cover (107), a lower mold shell (108), a carrier plate (109), a square tube (110), a connecting tube (111), a folded tube (112), a sleeve (113) and a breathable cushion layer (114). The vertical plates (102) are symmetrically distributed and fixedly arranged at the front and rear ends of the cavity shell (101), and the air guide fork tube (103) is fixedly arranged inside the vertical plate (102) arranged at the front end. The top end of the pad (104) is fixedly arranged with the bottom of the vertical plate (102), and the top end of the pad (104) is fixedly arranged with the column rod (105). A lower arc plate (106) is fixedly arranged on the outer side of the column rod (105); the top of the column rod (105) is threadedly assembled with the inner wall of the bottom end of the screw cover (107); a lower mold shell (108) is fixedly arranged on the top of the cavity shell (101); a carrier plate (109) is fixedly arranged inside the bottom end of the cavity shell (101); a square tube (110) is fixedly arranged inside the carrier plate (109); a connecting tube (111) is fixedly connected to the top of the square tube (110); the top of the connecting tube (111) is fixedly connected to the bottom end of the folded tube (112); the inner wall of the cavity shell (101) is fixedly arranged on the outer side of the folded tube (112); a sleeve (113) is fixedly connected to the rear end of the air guide fork tube (103); and a breathable cushion layer (114) is fixedly connected to the inside of the vertical plate (102).

2. A heat exchange cooling injection mold according to claim 1, characterized in that: The upper mold assembly (2) comprises an upper mold shell (21), an upper arc plate (22), a feed pipe (23), a cylinder device (24), a table plate (25) and an anchor plate (26); the upper arc plate (22) is symmetrically fixedly arranged on the outer side of the upper mold shell (21); the feed pipe (23) is fixedly arranged inside the upper mold shell (21); the cylinder device (24) is fixedly arranged on the top of the upper mold shell (21); the table plate (25) is fixedly arranged on the top of the cylinder device (24); and the anchor plates (26) are symmetrically fixedly arranged at the front and rear ends of the table plate (25).

3. A heat exchange cooling injection mold according to claim 2, characterized in that: The circular groove provided inside the upper arc plate (22) is slidably arranged on the outer side of the column rod (105).

4. The heat exchange cooling injection mold according to claim 1, characterized in that: The front end of the air guide fork pipe (103) is fixedly connected to the air delivery pipeline of the external cooling fan, the bottom end of the square pipe (110) arranged in the middle is fixedly connected to the input pipe of the external circulating cooling water system, and the bottom ends of the square pipe (110) arranged at the left and right ends are fixedly connected to the return pipe of the external circulating cooling water system.

5. The heat exchange cooling injection mold according to claim 1, characterized in that: The outer side of the sleeve (113) is provided with symmetrically distributed air holes, and is fixedly arranged between the inner sides of the vertical plates (102) arranged at the front and rear ends and the carrier plate (109).

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