Positioning device and positioning method of upper cover forming mold mother die at different mold temperatures

Abstract

The application provides a positioning device and positioning method for a cover forming die mother die at different mold temperatures, comprising a shot molding assembly and a die positioning mechanism, the shot molding assembly comprises a shot molding seat, a two-shot male die and a two-shot female die; the die positioning mechanism comprises a female die body, a plurality of adjusting blocks, a plurality of first bolts and a plurality of pressing strips; the application drives the adjusting blocks to move by using the female die body which expands under heat, after the female die body is warmed up, the pressing strips, the clamping blocks and the sliding blocks are fixed on the female die body to maintain the integrity of the female die body, then the first bolts are rotated to lock the adjusting blocks, then the locked adjusting blocks are used to multi-directionally extrude the female die body to correct the female die body, so that the position degree of the female die at different mold temperatures is always consistent, the phenomenon that the expansion amounts are inconsistent due to the temperature difference between the male die and the female die is avoided, the quality of the produced products is improved, and the defective rate is reduced.

Description

Technical Field

[0001] This invention relates to a positioning device, specifically a positioning device for the upper cover forming mold core under different mold temperatures, belonging to the field of mold technology. Background Technology

[0002] In the mold industry, molds are various molds and tools used to obtain desired products through injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, and other methods. In short, a mold is a tool used to create shaped objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the processing of the object's shape by changing the physical state of the material being molded. It is often called the "mother of industry." Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts; specifically, it refers to injecting molten plastic into the mold cavity under high pressure using an injection molding machine, and after cooling and solidification, obtaining the shaped product. A double-shot mold is a type of injection mold, mainly using two material tubes of a double-shot molding machine with two sets of molds, forming a double-shot product in two stages. The electronic cigarette cover is an important component of an electronic cigarette, and during production, it is usually made using a double-shot mold in two stages. In traditional two-shot molding dies for the injection molding of electronic cigarette covers, the temperature of the female mold in the two-shot mold needs to be set between 38 and 60 degrees Celsius, while the temperature of the male mold needs to be maintained between 138 and 163 degrees Celsius. When the male and female mold temperatures differ significantly, the steel of the male and female molds is prone to inconsistent expansion, which leads to different degrees of positional changes in the male and female molds after heating, resulting in product misalignment and dimensional defects. To address this, a positioning device and method for the female mold core of the cover molding die under different mold temperatures are proposed. Summary of the Invention

[0003] In view of this, the present invention aims to provide a positioning device and method for the upper cover forming mold core under different mold temperatures, so as to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial option.

[0004] The technical solution of this invention is implemented as follows: a positioning device for the female mold core of a top cover forming mold under different mold temperatures, including a mold injection assembly and a mold core positioning mechanism, wherein the mold injection assembly includes a mold injection base, a two-shot male mold and a two-shot female mold; The mold core positioning mechanism includes a female mold core body, several adjusting blocks, several first bolts, several pressure strips, several locking blocks, and several sliders; The male mold for two injections is installed on one side of the upper surface of the injection mold base. The female mold for two injections is located above the male mold for two injections. The female mold core is located at the bottom of the female mold for two injections. A plurality of adjusting blocks are evenly distributed on the outer side wall of the female mold core. A plurality of first bolts are slidably connected to the inner side wall of the adjusting blocks. A plurality of pressure strips are respectively distributed on the outer side wall of the female mold core. A plurality of sliders are located at the bottom of the female mold core. One side of a plurality of locking blocks is fixedly connected to the inner side wall of the pressure strip. The other side of a plurality of locking blocks is slidably connected to the inner side wall of the slider.

[0005] More preferably, a male injection mold is installed on the upper surface of the injection mold base away from the side of the two male injection molds, and a female injection mold is installed above the male injection mold.

[0006] More preferably, a female mold core plate is installed on the side of the second-shot female mold near the second-shot male mold, and a male mold core plate is installed on the side of the second-shot male mold near the second-shot female mold, wherein the male mold core plate is adapted to the female mold core plate.

[0007] More preferably, the female mold core is installed in the middle of the inner sidewall of the female mold core plate.

[0008] More preferably, a positioning strip is provided on one side of the male mold and the female mold of the second shot, and the positioning strip is threadedly connected to the outer side wall of the male mold and the female mold of the second shot by bolts.

[0009] More preferably, each of the inner walls of the pressure strips is symmetrically slidably connected to two second bolts, and the ends of the two second bolts away from the pressure strips are threaded to the inner wall of the female mold core.

[0010] More preferably, a positioning plate is uniformly fixedly connected to the top of the male mold core plate, the outer wall of the positioning plate is slidably connected to the outer wall of the card block, a male mold core positioning block is fixedly connected to the inner wall of the positioning plate, and positioning grooves are uniformly opened on the upper surface of a plurality of sliders, and the outer wall of the male mold core positioning block is slidably connected to the inner wall of the positioning groove.

[0011] More preferably, the inner walls of the male mold core plate and the female mold core plate are evenly provided with positioning holes, and the inner walls of the positioning holes are slidably connected with positioning posts, which are fixedly connected to the bottom of the second-shot female mold.

[0012] A method for positioning the core of a top cover molding die at different mold temperatures includes the following steps: S1. The electronic cigarette top cover is injection molded once using a male mold and a female mold. The temperature of the male mold and the female mold is 138-163 degrees Celsius. S2. The electronic cigarette after one injection molding is transferred to the female mold core. The temperature of the female mold core plate and the female mold core body is 38-60 degrees Celsius, while the temperature of the male mold core plate is 138-163 degrees Celsius. S3. The temperature of the mold core plate and the inside of the mold core is raised to 138-163 degrees Celsius. The heated and expanded mold core drives the adjustment block to move. S4. After the mold temperature stabilizes, position the male mold core plate and the female mold core plate, and then lock multiple adjusting blocks on the female mold core plate by rotating the first bolt. Use the locked adjusting blocks to perform multi-directional extrusion on the female mold core body to correct the female mold core body. S5. At the same time, the pressure strip, the locking block and the slider are fixed to the mother mold core body using the second bolt to maintain the integrity of the mother mold core body so that the mother mold core body can be corrected as a whole. S6. After the correction is completed, the male mold, female mold, male mold core plate and female mold core plate are closed and locked using positioning strips. S7. Perform secondary injection molding between the male mold core plate and the female mold core plate after mold closing to form the electronic cigarette cover.

[0013] In a further preferred embodiment, in step S6, the male mold core plate, the slider, and the female mold core plate are positioned using positioning holes, positioning posts, positioning plates, male mold core positioning blocks, and positioning grooves.

[0014] The present invention has the following advantages due to the adoption of the above technical solutions: The present invention utilizes the thermal expansion of the female mold core to drive the movement of the adjusting block. After the female mold core has heated up, the pressure strip, the locking block, and the slider are fixed on the female mold core to maintain the integrity of the female mold core. Then, the first bolt is rotated to lock the adjusting block. Then, the locked adjusting block is used to perform multi-directional extrusion on the female mold core to correct the female mold core. This ensures that the position of the female mold core remains consistent at different mold temperatures, avoiding the phenomenon of inconsistent expansion due to the temperature difference between the male and female molds, improving the quality of the produced products and reducing the defect rate.

[0015] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a schematic diagram of the axial cross-section of the two-shot male mold and two-shot female mold of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure viewed from below; Figure 4 This is a top view of the female mold core plate of the present invention; Figure 5 This is a bottom view of the female mold core plate of the present invention; Figure 6 This is a schematic diagram of the axial structure of the master mold core plate of the present invention; Figure 7 This is a schematic diagram of the axial side structure of the female mold core of the present invention; Figure 8 This is a flowchart of the steps of the present invention.

[0018] Reference numerals: 1. Injection mold assembly; 2. Mold core positioning mechanism; 101. Injection mold base; 102. Second-shot male mold; 103. Second-shot female mold; 201. Female mold core body; 202. Adjusting block; 203. First bolt; 204. Pressure strip; 205. Locking block; 206. Sliding block; 41. First-shot male mold; 42. First-shot female mold; 43. Positioning strip; 44. Male mold core plate; 45. Female mold core plate; 46. Second bolt; 47. Male mold core positioning block; 48. Positioning groove; 49. Positioning plate; 50. Positioning hole; 51. Positioning post. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1-8 As shown, this embodiment of the invention provides a positioning device for the female mold core of a top cover forming mold under different mold temperatures, including a mold injection assembly 1 and a mold core positioning mechanism 2. The mold injection assembly 1 includes a mold injection base 101, a two-shot male mold 102 and a two-shot female mold 103. The mold core positioning mechanism 2 includes a female mold core body 201, several adjusting blocks 202, several first bolts 203, several pressure strips 204, several locking blocks 205 and several sliders 206; The male mold 102 is installed on one side of the upper surface of the injection mold base 101. The female mold 103 is located above the male mold 102. The female mold core 201 is located at the bottom of the female mold 103. Several adjusting blocks 202 are evenly distributed on the outer side wall of the female mold core 201. Several first bolts 203 are slidably connected to the inner side wall of the adjusting blocks 202. Several pressure strips 204 are respectively distributed on the outer side wall of the female mold core 201. Several sliders 206 are all located at the bottom of the female mold core 201. One side of several locking blocks 205 is fixedly connected to the inner side wall of the pressure strip 204, and the other side of several locking blocks 205 is slidably connected to the inner side wall of the slider 206.

[0022] In one embodiment, a male mold 41 is installed on the upper surface of the injection mold base 101 away from the male mold 102, and a female mold 42 is installed above the male mold 41. A female mold core plate 45 is installed on the side of the female mold 103 near the male mold 102, and a male mold core plate 44 is installed on the side of the male mold 102 near the female mold 103. The male mold core plate 44 is adapted to the female mold core plate 45, and the female mold core body 201 is installed in the middle of the inner sidewall of the female mold core plate 45. The electronic cigarette top cover is formed by performing a first injection molding using an injection molding machine, a male mold 41, and a female mold 42, and then performing a second injection molding between the male mold core plate 44 and the female mold core plate 45 using an injection molding machine.

[0023] In one embodiment, a positioning strip 43 is provided on one side of the male mold 102 and the female mold 103. The positioning strip 43 is threadedly connected to the outer side wall of the male mold 102 and the female mold 103 by bolts. The positioning strip 43 and the bolts lock the male mold 102 and the female mold 103 together, ensuring the stability between the male mold 102, the female mold 103, the male mold core plate 44 and the female mold core plate 45.

[0024] In one embodiment, the inner walls of several pressure strips 204 are symmetrically slidably connected with two second bolts 46, and the ends of the two second bolts 46 away from the pressure strips 204 are threaded to the inner wall of the mold core 201; the pressure strips 204 are locked and fixed to the mold core 201 by the second bolts 46.

[0025] In one embodiment, a positioning plate 49 is uniformly fixedly connected to the top of the male mold core plate 44. The outer side wall of the positioning plate 49 is slidably connected to the outer side wall of the locking block 205. A male mold core positioning block 47 is fixedly connected to the inner side wall of the positioning plate 49. Positioning grooves 48 are uniformly opened on the upper surface of several sliders 206. The outer side wall of the male mold core positioning block 47 is slidably connected to the inner side wall of the positioning groove 48. The positioning plate 49 is driven to move by the male mold core plate 44. The moving positioning plate 49 drives the male mold core positioning block 47 to be inserted into the positioning groove 48, so as to position the male mold core plate 44, sliders 206 and female mold core 201.

[0026] In one embodiment, positioning holes 50 are evenly provided on the inner sidewalls of the male mold core plate 44 and the female mold core plate 45. Positioning pins 51 are slidably connected to the inner sidewalls of the positioning holes 50. The positioning pins 51 are fixedly connected to the bottom of the second-shot female mold 103. The positioning pins 51 slide in the positioning holes 50 to position the second-shot male mold 102, male mold core plate 44 and second-shot female mold 103, female mold core plate 45.

[0027] A method for positioning the core of a top cover molding die at different mold temperatures includes the following steps: S1. The electronic cigarette cover is injection molded once using a male mold 41 and a female mold 42. The temperature of the male mold 41 and the female mold 42 is 138-163 degrees Celsius. S2. The electronic cigarette after one injection molding is transferred to the female mold core 201. The temperature inside the female mold core plate 45 and the female mold core 201 is 38-60 degrees Celsius, while the temperature inside the male mold core plate 44 is 138-163 degrees Celsius. S3. The temperature inside the mold core plate 45 and the mold core body 201 is raised to 138-163 degrees Celsius. The heated and expanded mold core body 201 drives the adjusting block 202 to move. S4. After the mold temperature stabilizes, the male mold core plate 44 and the female mold core plate 45 are positioned. Then, multiple adjusting blocks 202 are locked onto the female mold core plate 45 by rotating the first bolt 203. The locked adjusting blocks 202 are used to perform multi-directional extrusion on the female mold core body 201 to correct the female mold core body 201. S5. At the same time, the pressure strip 204, the locking block 205 and the slider 206 are fixed to the female mold core body 201 by the second bolt 46 in order to maintain the integrity of the female mold core body 201 so as to perform overall correction of the female mold core body 201. S6. After the correction is completed, the two-shot male mold 102, the two-shot female mold 103, the male mold core plate 44 and the female mold core plate 45 are closed and locked using the positioning strip 43. S7. Perform secondary injection molding between the male mold core plate 44 and the female mold core plate 45 after mold closing to form the electronic cigarette top cover.

[0028] In one embodiment, in S6, the male mold core plate 44, the slider 206 and the female mold core plate 45 are positioned by the positioning hole 50, the positioning post 51, the positioning plate 49, the male mold core positioning block 47 and the positioning groove 48.

[0029] In operation, this invention involves: using a male mold 41 and a female mold 42 to perform a single injection molding of the electronic cigarette top cover; then transferring the molded electronic cigarette to the female mold core 201; raising the temperature of the female mold core plate 45 and the female mold core 201 to 138-163 degrees Celsius; and then, the thermal expansion of the female mold core 201 drives the movement of the adjusting block 202; after the temperature inside the female mold core 201 stabilizes, the pressure strip 204, the locking block 205, and the slider 206 are placed on the female mold core 201. The pressure strip 204 is locked and fixed to the female mold core 201 by the second bolt 46 to maintain the integrity of the female mold core 201 and facilitate overall alignment of the female mold core 201. Then, by rotating the first bolt 203, multiple adjusting blocks 202 are locked to the female mold core plate 45, so that the locked adjusting blocks 202 can be used to perform multi-directional compression on the female mold core 201 for overall alignment of the female mold core 201. This ensures that the position of the female mold core remains consistent under different mold temperatures, avoiding defects. The inconsistent expansion caused by the temperature difference between the male and female molds has been corrected, improving the quality of the produced products and reducing the defect rate. After correction, the male mold 102, female mold 103, male mold core plate 44, and female mold core plate 45 are moved to close the mold. The moving male mold core plate 44 drives the positioning plate 49 to move, and the moving positioning plate 49 drives the male mold core positioning block 47 to insert into the positioning groove 48 to position the male mold core plate 44, the slider 206, and the female mold core body 201. Then, the positioning pins 5 are set to... 1. Slide within the positioning hole 50 to position the male mold 102, male mold core plate 44, female mold 103, and female mold core plate 45. After mold closing, the positioning strip 43 is moved to lock the male mold 102 and female mold 103 together with bolts, ensuring the stability of the male mold 102, female mold 103, male mold core plate 44, and female mold core plate 45. Then, a secondary injection molding is performed between the male mold core plate 44 and female mold core plate 45 using an injection molding machine to form the electronic cigarette cover.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A positioning device for the core of a top cover molding die under different mold temperatures, comprising a molding assembly (1) and a core positioning mechanism (2), characterized in that: The injection molding assembly (1) includes an injection molding base (101), a two-shot male mold (102), and a two-shot female mold (103); The female mold (103) of the second shot is equipped with a female mold core plate (45) on the side close to the male mold (102) of the second shot, and the male mold (102) of the second shot is equipped with a male mold core plate (44) on the side close to the female mold (103) of the second shot, and the male mold core plate (44) is adapted to the female mold core plate (45); The mold core positioning mechanism (2) includes a female mold core body (201), several adjusting blocks (202), several first bolts (203), several pressure strips (204), several locking blocks (205) and several sliders (206); The female mold core (201) is installed in the middle of the inner side wall of the female mold core plate (45); The male mold (102) is installed on one side of the upper surface of the injection mold base (101), the female mold (103) is located above the male mold (102), the female mold core (201) is located at the bottom of the female mold (103), a plurality of adjusting blocks (202) are evenly distributed on the outer side wall of the female mold core (201), a plurality of first bolts (203) are slidably connected to the inner side wall of the adjusting blocks (202), and a plurality of pressure strips (204) are respectively located on the outer side of the female mold core (201). The sidewalls are provided with a number of sliders (206) on one side of the female mold core (201), and one side of a number of locking blocks (205) is fixedly connected to the inner sidewall of the pressure strip (204). The other side of a number of locking blocks (205) is slidably connected to the inner sidewall of the slider (206). The inner sidewalls of a number of pressure strips (204) are symmetrically slidably connected with two second bolts (46). The ends of the two second bolts (46) away from the pressure strip (204) are threaded to the inner sidewall of the female mold core (201).

2. The positioning device for the upper cover forming mold core under different mold temperatures according to claim 1, characterized in that: A male mold (41) is installed on the upper surface of the injection mold base (101) away from the male mold (102), and a female mold (42) is installed above the male mold (41).

3. The positioning device for the upper cover forming mold core under different mold temperatures according to claim 1, characterized in that: The male mold (102) and female mold (103) of the two-shot method are provided with positioning strips (43) on one side. The positioning strips (43) are threadedly connected to the outer walls of the male mold (102) and female mold (103) of the two-shot method by bolts.

4. The positioning device for the upper cover forming mold core under different mold temperatures according to claim 1, characterized in that: The top of the male mold core plate (44) is uniformly fixedly connected with a positioning plate (49). The outer side wall of the positioning plate (49) is slidably connected to the outer side wall of the card block (205). The inner side wall of the positioning plate (49) is fixedly connected with a male mold core positioning block (47). The upper surface of several sliders (206) is uniformly provided with positioning grooves (48). The outer side wall of the male mold core positioning block (47) is slidably connected to the inner side wall of the positioning groove (48).

5. The positioning device for the upper cover forming mold core under different mold temperatures according to claim 1, characterized in that: The inner walls of the male mold core plate (44) and the female mold core plate (45) are evenly provided with positioning holes (50), and the inner walls of the positioning holes (50) are slidably connected with positioning posts (51), and the positioning posts (51) are fixedly connected to the bottom of the two-shot female mold (103).

6. A positioning method for the positioning device of the upper cover forming mold core under different mold temperatures according to any one of claims 1-5, characterized in that, Includes the following steps: S1. The electronic cigarette cover is injection molded once using a male mold (41) and a female mold (42). The temperature of the male mold (41) and the female mold (42) is 138-163 degrees Celsius. S2. The electronic cigarette after one injection molding is transferred to the female mold core (201). The temperature inside the female mold core plate (45) and the female mold core (201) is 38-60 degrees Celsius, while the temperature inside the male mold core plate (44) is 138-163 degrees Celsius. S3. The temperature inside the mold core plate (45) and the mold core body (201) is raised to 138-163 degrees Celsius. The heated and expanded mold core body (201) drives the adjustment block (202) to move. S4. After the mold temperature stabilizes, position the male mold core plate (44) and the female mold core plate (45), and then lock multiple adjusting blocks (202) onto the female mold core plate (45) by rotating the first bolt (203). Use the locked adjusting blocks (202) to perform multi-directional extrusion on the female mold core body (201) to correct the female mold core body (201). S5. At the same time, the pressure strip (204), the clamping block (205) and the slider (206) are fixed on the female mold core body (201) using the second bolt (46) to maintain the integrity of the female mold core body (201) so as to perform overall correction of the female mold core body (201); S6. After the correction is completed, the two-shot male mold (102), the two-shot female mold (103), the male mold core plate (44) and the female mold core plate (45) are closed and locked using the positioning strip (43); S7. Perform secondary injection molding between the male mold core plate (44) and the female mold core plate (45) after mold closing to form the electronic cigarette cover.

7. The positioning method according to claim 6, characterized in that: In S6, the male mold core plate (44) and the female mold core plate (45) are positioned by positioning holes (50), positioning pins (51), positioning plates (49), male mold core positioning blocks (47) and positioning grooves (48).

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