Die planar exhaust structure

Abstract

The utility model relates to the technical field of dies, in particular to a die planar exhaust structure which comprises a die body, a die cavity is arranged on the upper surface of the die body, an annular sheet-shaped air passage is arranged on the upper surface of the die body and located on the outer side of the die cavity, and a plurality of exhaust grooves are formed in the inner side surface of the die cavity at equal intervals. And an air pipe assembly is fixedly installed in the annular sheet-shaped air channel and comprises an annular pipe, a plurality of adjusting pipes are fixedly installed on the surface of the outer side of the annular pipe at equal intervals in an embedded mode, an adjusting assembly is slidably connected into the exhaust groove, and the adjusting assembly comprises a blocking strip. According to the utility model, the sheet-shaped exhaust groove is formed in the inner wall of the mold cavity, so that the size of the exhaust groove is increased, air at the bottom of the mold cavity is conveniently exhausted, the exhaust effect is improved, meanwhile, the exhaust groove is conveniently sealed after the air is exhausted, a sealed space is formed in the mold cavity, and flashes formed at the exhaust groove of an injection molding part are reduced; the injection molding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold surface exhaust structure. Background Art

[0002] Injection molds are tools for producing plastic products; they are also tools that give plastic products a complete structure and precise dimensions. Injection molds often include mold cores and sliders; and the exhaust performance of injection molds will also affect the quality of the final injection molded product.

[0003] The existing exhaust structure is to open multiple exhaust grooves on one side of the concave mold on the parting surface, and then connect the multiple exhaust grooves through air ducts for exhaust. The inner diameter of the exhaust groove is small, which is only convenient for exhausting the air around the exhaust groove inside the mold cavity, but not convenient for exhausting the air at the bottom of the mold cavity. During injection molding, the injection molded part is prone to form flash at the exhaust groove, and the injection molding quality is low. Utility Model Content

[0004] The purpose of the utility model is to provide a mold surface exhaust structure to solve the problems raised in the above background technology.

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

[0006] A mold surface exhaust structure comprises a mold body, a mold cavity is provided on the upper surface of the mold body, an annular sheet-like air duct is provided on the upper surface of the mold body outside the mold cavity, a plurality of exhaust grooves are equidistantly provided on the inner surface of the mold cavity, an air pipe assembly is fixedly installed inside the annular sheet-like air duct, the air pipe assembly comprises an annular tube, a plurality of adjustment tubes are equidistantly and fixedly embedded on the outer surface of the annular tube, an adjustment assembly is slidably connected inside the exhaust groove, the adjustment assembly comprises a blocking strip, a trapezoidal strip is fixedly installed at one end of one side surface of the blocking strip.

[0007] Furthermore, one end of the exhaust groove is communicated with the annular sheet-shaped air passage, and the exhaust groove and the mold cavity connecting end are trapezoidal.

[0008] Furthermore, a connecting ear is fixedly installed on the outer surface of the annular tube, and a threaded groove is formed on the inner lower surface of the annular sheet-shaped air passage below the connecting ear.

[0009] Furthermore, the blocking bar is slidably connected to the exhaust groove, a Z-shaped bracket is fixedly mounted on the surface of one end of the blocking bar, and a reinforcing rod is fixedly mounted on the outer surface of the Z-shaped bracket.

[0010] Preferably: a piston rod is fixedly mounted on one end surface of the Z-shaped bracket, the piston rod penetrates the one end surface of the adjusting tube and is slidably connected to the adjusting tube, a spring is provided inside the adjusting tube and is located on the outer side of the piston rod, and both ends of the spring are respectively fixedly connected to the inner end surface of the adjusting tube and one end of the piston rod.

[0011] Furthermore, an air outlet groove is provided at one end of the upper surface of the mold body, and the air outlet groove is communicated with the annular sheet-shaped air channel.

[0012] Preferably, an air inlet pipe is fixedly embedded in the outer surface of the annular tube, the air inlet pipe passes through the air outlet groove, and one end of the air inlet pipe is fixedly connected to an air pump.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The spring pushes one end of the piston rod under its own elastic force, so that the piston rod moves into the adjusting tube, driving the blocking strip and the trapezoidal strip to move outward from the cavity, and opening the exhaust groove. The exhaust groove is vertically located on the outer wall of the cavity, so that the air inside the cavity is discharged from the exhaust groove, and the air enters the annular sheet airway, and finally is discharged from the air outlet groove. Therefore, by opening the sheet exhaust groove on the inner wall of the cavity and increasing the size of the exhaust groove, the air at the bottom of the cavity is also easy to be discharged, thereby increasing the exhaust effect.

[0015] 2. The air pump runs to pump outside air into the annular tube and the regulating tube, pushing the piston rod to move outside the regulating tube, driving the blocking strip and the trapezoidal strip to move inside the mold cavity, so that the blocking strip and the trapezoidal strip block the exhaust groove, and the air between the blocking strip and the mold cavity is easily discharged through the trapezoidal surface at one end of the trapezoidal strip and the exhaust groove, so as to prevent the air from being pushed into the mold cavity when the blocking strip is closed, so as to facilitate the closing of the exhaust groove after the air is discharged, so that a closed space is formed inside the mold cavity, reducing the flash formed at the exhaust groove of the injection molded part, and improving the injection molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall split structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the mold body and the blocking component in the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the exhaust groove in the utility model in a closed state;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the exhaust groove in the utility model when it is in an open state.

[0021] In the figure: 1. mold body; 101. mold cavity; 102. annular sheet air channel; 103. exhaust groove; 104. outlet groove; 2. air pipe assembly; 201. annular pipe; 202. air inlet pipe; 203. air pump; 204. regulating pipe; 205. connecting ear; 3. regulating assembly; 301. blocking strip; 302. trapezoidal strip; 303. Z-shaped bracket; 304. reinforcement rod; 305. piston rod; 306. spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figures 1 to 5 In an embodiment of the utility model, a mold surface exhaust structure includes a mold body 1, a mold cavity 101 is provided on the upper surface of the mold body 1, an annular sheet-like air duct 102 is provided on the upper surface of the mold body 1 outside the mold cavity 101, a plurality of exhaust grooves 103 are equidistantly provided on the inner surface of the mold cavity 101, an air pipe assembly 2 is fixedly installed inside the annular sheet-like air duct 102, the air pipe assembly 2 includes an annular tube 201, a plurality of adjustment tubes 204 are equidistantly fixedly embedded on the outer surface of the annular tube 201, an adjustment assembly 3 is slidably connected inside the exhaust groove 103, the adjustment assembly 3 includes a blocking strip 301, and a trapezoidal strip 302 is fixedly installed at one end of one side surface of the blocking strip 301.

[0024] Specifically, the air pipe assembly 2 provides power for the movement of the adjustment assembly 3, so that the blocking strip 301 can block and open the exhaust groove 103, which is convenient for exhausting air and also facilitates the mold cavity 101 to form a closed space.

[0025] Embodiment 1

[0026] like Figure 1-3 As shown, in the present embodiment, one end of the exhaust groove 103 is connected to the annular sheet-like air channel 102, and the connecting end of the exhaust groove 103 and the mold cavity 101 is trapezoidal; a connecting ear 205 is fixedly installed on the outer surface of the annular tube 201, and a threaded groove is provided on the inner lower surface of the annular sheet-like air channel 102 below the connecting ear 205; an exhaust groove 104 is provided at one end of the upper surface of the mold body 1, and the exhaust groove 104 is connected to the annular sheet-like air channel 102.

[0027] In this embodiment, for the sake of clarity of description, it is taken as an example that one end of the exhaust groove 103 is connected to the annular sheet-like air duct 102. The exhaust groove 103 is vertically located on the outer wall of the mold cavity 101, so that the air inside the mold cavity 101 is discharged from the exhaust groove 103, and the air enters the annular sheet-like air duct 102, and finally is discharged to the outside from the air outlet groove 104. Therefore, by opening a sheet-like exhaust groove 103 on the inner wall of the mold cavity 101 and increasing the size of the exhaust groove 103, the air at the bottom of the mold cavity 101 is also facilitated to be discharged, thereby increasing the exhaust effect. The annular tube 201 is fixed inside the annular sheet-like air duct 102 by an external bolt passing through the connecting ear 205 and connecting it to the threaded groove, so that the position of the blocking strip 301 is fixed.

[0028] like Figure 2-5 As shown, in the present embodiment, the blocking strip 301 is slidably connected with the exhaust groove 103, a Z-shaped bracket 303 is fixedly mounted on the surface of one end of the blocking strip 301, and a reinforcing rod 304 is fixedly mounted on the outer surface of the Z-shaped bracket 303; a piston rod 305 is fixedly mounted on the surface of one end of the Z-shaped bracket 303, the piston rod 305 passes through the surface of one end of the regulating tube 204, and is slidably connected with the regulating tube 204, a spring 306 is movably sleeved on the outer side of the piston rod 305 inside the regulating tube 204, and both ends of the spring 306 are respectively fixedly connected to the inner surface of one end of the regulating tube 204 and one end of the piston rod 305; an air inlet pipe 202 is fixedly embedded and mounted on the outer surface of the annular tube 201, the air inlet pipe 202 passes through the air outlet groove 104, and one end of the air inlet pipe 202 is fixedly connected to the air pump 203.

[0029] In the specific implementation, when exhausting, the spring 306 pushes one end of the piston rod 305 under its own elastic force, so that the piston rod 305 moves toward the inside of the regulating tube 204, driving the blocking strip 301 and the trapezoidal strip 302 to move toward the outside of the mold cavity 101, and opening the exhaust groove 103. Conversely, the air pump 203 operates to pump external air into the annular tube 201 and the regulating tube 204, pushing the piston rod 305 to move toward the outside of the regulating tube 204, driving the blocking strip 301 and the trapezoidal strip 302 to move toward the mold cavity. The blocking strip 301 and the trapezoidal strip 302 block the exhaust groove 103, and the air between the blocking strip 301 and the mold cavity 101 can be easily discharged through the trapezoidal surface at one end of the trapezoidal strip 302 and the exhaust groove 103, so as to prevent the air from being pushed into the mold cavity 101 when the blocking strip 301 is closed. This makes it easy to close the exhaust groove 103 after the air is discharged, so as to form a closed space inside the mold cavity 101, reduce the flash formed on the injection molded part at the exhaust groove 103, and improve the injection molding quality.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mold surface exhaust structure, comprising a mold body (1), wherein the upper surface of the mold body (1) is provided with a mold cavity (101), characterized in that: The upper surface of the mold body (1) is provided with an annular sheet-shaped air channel (102) located outside the mold cavity (101), and the inner surface of the mold cavity (101) is provided with a plurality of exhaust grooves (103) at equal intervals. An air pipe assembly (2) is fixedly installed inside the annular sheet-shaped air channel (102), and the air pipe assembly (2) comprises an annular tube (201), and a plurality of adjustment tubes (204) are fixedly embedded and installed at equal intervals on the outer surface of the annular tube (201), and an adjustment assembly (3) is slidably connected inside the exhaust groove (103), and the adjustment assembly (3) comprises a blocking strip (301), and a trapezoidal strip (302) is fixedly installed at one end of one side surface of the blocking strip (301).

2. A mold surface exhaust structure according to claim 1, characterized in that: One end of the exhaust groove (103) is in communication with the annular sheet-shaped air passage (102), and the connecting end of the exhaust groove (103) and the mold cavity (101) is trapezoidal.

3. A mold surface exhaust structure according to claim 1, characterized in that: A connecting ear (205) is fixedly mounted on the outer surface of the annular tube (201), and a threaded groove is provided on the inner lower surface of the annular sheet-shaped air passage (102) below the connecting ear (205).

4. A mold surface exhaust structure according to claim 1, characterized in that: The blocking strip (301) is slidably connected to the exhaust groove (103), a Z-shaped bracket (303) is fixedly mounted on one end surface of the blocking strip (301), and a reinforcing rod (304) is fixedly mounted on the outer surface of the Z-shaped bracket (303).

5. A mold surface exhaust structure according to claim 4, characterized in that: A piston rod (305) is fixedly mounted on one end surface of the Z-shaped bracket (303), and the piston rod (305) penetrates through one end surface of the regulating tube (204) and is slidably connected to the regulating tube (204). A spring (306) is movably sleeved outside the piston rod (305) inside the regulating tube (204), and two ends of the spring (306) are respectively fixedly connected to one end surface inside the regulating tube (204) and one end of the piston rod (305).

6. A mold surface exhaust structure according to claim 1, characterized in that: An air outlet groove (104) is provided at one end of the upper surface of the mold body (1), and the air outlet groove (104) is connected to the annular sheet-shaped air channel (102).

7. A mold surface exhaust structure according to claim 6, characterized in that: An air intake pipe (202) is fixedly embedded in the outer surface of the annular tube (201), the air intake pipe (202) passes through the air outlet groove (104), and one end of the air intake pipe (202) is fixedly connected to an air pump (203).

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