Injection molding and demolding structure for long-barrel-shaped product

Abstract

The utility model discloses a long tubular product injection molding demoulding structure, which belongs to the technical field of mould demoulding, and comprises a fixed plate, four positioning bolts are fixedly connected to the top of the fixed plate, two positioning bolts are in one group, arc plates are sleeved on the two groups of positioning bolts, and the arc plates are connected with the fixed plate. The two sets of positioning bolts are in threaded connection with first nuts correspondingly, and the inner walls of the two arc plates are fixedly connected with a left die sleeve and a right die sleeve correspondingly. Through the combined action of an arc plate, a left mold sleeve, a right mold sleeve, a limiting block, a fixing bolt and a second nut, an outer mold of a cylindrical plastic product is composed of two parts, the outer mold is convenient to disassemble during demolding, the possibility of pulling the outer side of the cylindrical plastic product is reduced, and through the combined action of an air inlet pipe, an air bag, a heat insulation cloth liner and a high-temperature-resistant cloth liner, the mold is convenient to disassemble. And the expanded air bag is adopted as an inner mold of the cylindrical plastic product, so that air in the air bag can be conveniently discharged during demolding, and demolding is rapidly completed.

Description

Technical Field

[0001] The utility model relates to the technical field of mold demoulding, and more specifically, to an injection demoulding structure for a long cylindrical product. Background Art

[0002] Injection molds are tools for producing plastic products and also tools for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product. The cylindrical plastic shell has become one of the most important components of many products.

[0003] At present, when taking out the cylindrical plastic product after injection molding, the mold mostly directly uses the pulling method to demould the cylindrical plastic product. However, this method easily causes tensile streaks on the side wall of the product after demoulding, which affects the aesthetics of the product. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a long cylindrical product injection demoulding structure, which has the characteristics of convenient demoulding and preventing straining.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides an injection molding demolding structure for a long cylindrical product, including a fixing plate, the top of the fixing plate is fixedly connected with four positioning bolts, two of the positioning bolts form a group, the two groups of positioning bolts are sleeved with arc plates, the two groups of positioning bolts are threadedly connected with first nuts, the inner walls of the two arc plates are respectively fixedly connected with a left mold sleeve and a right mold sleeve, one side of the left mold sleeve and the right mold sleeve overlap each other, the outer sides of the left mold sleeve and the right mold sleeve are fixedly connected with four limit blocks, two of the limit blocks form a group, the four groups of limit blocks are movably penetrated with fixing bolts, one end of the four fixing bolts is threadedly connected with a second nut, the top of the left mold sleeve is connected with an injection molding pipe, the bottom of the fixing plate is connected with an air intake pipe, the top of the fixing plate is fixedly connected with an airbag, the airbag is located inside the left mold sleeve and the right mold sleeve, the outer side of the airbag is fixedly connected with a heat insulating mat, and the outer side of the heat insulating mat is fixedly connected with a high temperature resistant mat.

[0008] When using the injection molding demolding structure of a long cylindrical product of the present technical solution, the outer mold of the cylindrical plastic product is composed of two parts through the joint action of the arc plate, the left mold sleeve, the right mold sleeve, the limit block, the fixing bolt and the second nut, which is convenient for splitting it during demolding and reduces the possibility of straining the outer side of the cylindrical plastic product. Through the joint action of the air intake pipe, the airbag, the heat insulating pad and the high temperature resistant pad, the expanded airbag is used as the inner mold of the cylindrical plastic product, which is convenient for releasing the gas in the airbag during demolding and quickly completing the demolding.

[0009] Furthermore, the four corners of the bottom of the fixed plate are fixedly connected with supporting legs, the bottoms of the two arc plates are fixedly connected with silicone flat pads, and the bottoms of the two silicone flat pads are overlapped on the top of the fixed plate.

[0010] Furthermore, an arc groove is provided on one side of the right mold sleeve, and the inner wall of the arc groove overlaps with the outer side of the injection tube.

[0011] Furthermore, a valve is provided on the air intake pipe, and a pressure gauge is provided on one side of the air intake pipe.

[0012] Furthermore, two slots are provided on one side of the left mold sleeve, and inserting strips are inserted into the two slots, and one side of the two inserting strips is fixedly connected to one side of the right mold sleeve.

[0013] (3) Beneficial effects

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. Through the joint action of the arc plate, the left mold sleeve, the right mold sleeve, the limit block, the fixing bolt and the second nut, the outer mold of the cylindrical plastic product is composed of two parts, which is convenient for separation during demoulding, reducing the possibility of straining the outer side of the cylindrical plastic product. Through the joint action of the air intake pipe, the air bag, the heat insulation mat and the high temperature resistant mat, the expanded air bag is used as the inner mold of the cylindrical plastic product, which is convenient for releasing the gas in the air bag during demoulding and quickly completing demoulding;

[0016] 2. By setting up a silicone flat pad, the sealing effect between the arc plate and the fixed plate is improved. By setting up a pressure gauge, the gas pressure in the airbag can be used to understand whether the airbag is expanded in place, thereby avoiding affecting the injection molding effect of the cylindrical plastic product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the partial cross-sectional structure of the middle and left mold sleeves.

[0021] The symbols in the accompanying drawings are:

[0022] 1. Fixing plate; 2. Support legs; 3. Positioning bolts; 4. First nut; 5. Arc plate; 6. Silicone flat pad; 7. Left mold sleeve; 8. Right mold sleeve; 9. Limit block; 10. Fixing bolts; 11. Second nut; 12. Injection tube; 13. Arc groove; 14. Inlet pipe; 15. Valve; 16. Pressure gauge; 17. Airbag; 18. Heat insulation pad; 19. High temperature resistant pad; 20. Slot; 21. Insert. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0024] Example:

[0025] The following is combined with Figure 1-3 The utility model is described in further detail.

[0026] See also Figure 1-3The utility model provides a technical solution: an injection molding demoulding structure for a long cylindrical product, comprising a fixing plate 1, four positioning bolts 3 are fixedly connected to the top of the fixing plate 1, two positioning bolts 3 form a group, arc plates 5 are sleeved on the two groups of positioning bolts 3, first nuts 4 are threadedly connected on the two groups of positioning bolts 3, left mold sleeves 7 and right mold sleeves 8 are fixedly connected to the inner walls of the two arc plates 5, one side of the left mold sleeve 7 and the right mold sleeve 8 overlap each other, four limit blocks 9 are fixedly connected to the outer sides of the left mold sleeve 7 and the right mold sleeve 8, two limit blocks 9 form a group, fixing bolts 10 are movably penetrated on the four groups of limit blocks 9, and second nuts 11 are threadedly connected on one end of the four fixing bolts 10, through the arc plate 5, the left mold sleeve 7, the right mold sleeve 8, the limit blocks 9, the fixing bolts 10 The combined effect of the left and right nut 11 makes the outer mold of the cylindrical plastic product consist of two parts, which is convenient for splitting during demoulding and reduces the possibility of straining the outer side of the cylindrical plastic product. The top of the left mold sleeve 7 is connected to the injection tube 12, the bottom of the fixed plate 1 is connected to the air intake pipe 14, the top of the fixed plate 1 is fixedly connected to the air bag 17, the air bag 17 is located inside the left mold sleeve 7 and the right mold sleeve 8, the outer side of the air bag 17 is fixedly connected to a heat insulating pad 18, the outer side of the heat insulating pad 18 is fixedly connected to a high temperature resistant pad 19, through the combined effect of the air intake pipe 14, the air bag 17, the heat insulating pad 18 and the high temperature resistant pad 19, the expanded air bag 17 is used as the inner mold of the cylindrical plastic product, which is convenient for releasing the gas in the air bag 17 during demoulding and quickly completing the demoulding.

[0027] Specifically, the four corners of the bottom of the fixed plate 1 are fixedly connected with supporting legs 2, the bottoms of the two arc plates 5 are fixedly connected with silicone flat pads 6, the bottoms of the two silicone flat pads 6 are overlapped on the top of the fixed plate 1, and an arc groove 13 is opened on one side of the right mold sleeve 8, and the inner wall of the arc groove 13 overlaps the outer side of the injection tube 12.

[0028] By adopting the above technical solution and providing the silicone flat pad 6 , the sealing effect between the arc plate 5 and the fixed plate 1 is improved.

[0029] Specifically, a valve 15 is provided on the air inlet pipe 14 , a pressure gauge 16 is provided on one side of the air inlet pipe 14 , two slots 20 are provided on one side of the left mold sleeve 7 , insert strips 21 are inserted into the two slots 20 , and one side of the two insert strips 21 is fixedly connected to one side of the right mold sleeve 8 .

[0030] By adopting the above technical solution and setting the pressure gauge 16, it is possible to know whether the airbag 17 is fully expanded through the gas pressure in the airbag 17, thereby avoiding affecting the injection molding effect of the cylindrical plastic product.

[0031] The working principle of the utility model is as follows: when in use, the injection material can be injected into the left mold sleeve 7 and the right mold sleeve 8 through the injection tube 12, so that it fills the space between the left mold sleeve 7, the right mold sleeve 8 and the high temperature resistant pad 19. After it is cooled and finalized, the second nut 11 on the fixing bolt 10 can be removed, and then the fixing bolt 10 is removed, and at the same time, the first nut 4 on the positioning bolt 3 is removed, and the left mold sleeve 7 and the right mold sleeve 8 are lightly lifted upward to drive the arc plate 5 to separate from the fixing plate 1. When the arc plate 5 is separated from the positioning bolt 3, the left mold sleeve 7 and the right mold sleeve 8 are then pulled to both sides respectively to separate them from the finalized cylindrical plastic product, and the valve 15 is unfolded. The gas in the airbag 17 is discharged outwardly through the air inlet pipe 14, and the airbag 17 contracts to separate the high temperature resistant pad 19 on its outside from the inner wall of the cylindrical plastic product, thereby completing the demoulding work for the cylindrical plastic product.

[0032] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A long cylindrical product injection demoulding structure, comprising a fixing plate (1), characterized in that: The top of the fixing plate (1) is fixedly connected with four positioning bolts (3), two of the positioning bolts (3) form a group, the two groups of positioning bolts (3) are sleeved with an arc plate (5), the two groups of positioning bolts (3) are threadedly connected with a first nut (4), the inner walls of the two arc plates (5) are respectively fixedly connected with a left mold sleeve (7) and a right mold sleeve (8), one side of the left mold sleeve (7) and the right mold sleeve (8) overlap each other, the outer sides of the left mold sleeve (7) and the right mold sleeve (8) are fixedly connected with four limit blocks (9), two of the limit blocks (9) form a group, and the four groups of limit blocks The positioning block (9) is movably provided with fixing bolts (10), one end of each of the four fixing bolts (10) is threadedly connected to a second nut (11), the top of the left mold sleeve (7) is connected to an injection tube (12), the bottom of the fixing plate (1) is connected to an air intake pipe (14), the top of the fixing plate (1) is fixedly connected to an air bag (17), the air bag (17) is located inside the left mold sleeve (7) and the right mold sleeve (8), the outer side of the air bag (17) is fixedly connected to a heat insulating pad (18), and the outer side of the heat insulating pad (18) is fixedly connected to a high temperature resistant pad (19).

2. The injection molding demoulding structure of a long cylindrical product according to claim 1, characterized in that: The four corners of the bottom of the fixed plate (1) are fixedly connected to supporting legs (2), the bottoms of the two arc plates (5) are fixedly connected to silicone flat pads (6), and the bottoms of the two silicone flat pads (6) are overlapped on the top of the fixed plate (1).

3. The injection molding demoulding structure of a long cylindrical product according to claim 1, characterized in that: An arc groove (13) is provided on one side of the right mold sleeve (8), and the inner wall of the arc groove (13) overlaps the outer side of the injection tube (12).

4. The injection molding demoulding structure of a long cylindrical product according to claim 1, characterized in that: A valve (15) is provided on the air intake pipe (14), and a pressure gauge (16) is provided on one side of the air intake pipe (14).

5. The injection molding demoulding structure of a long cylindrical product according to claim 1, characterized in that: Two slots (20) are provided on one side of the left mold sleeve (7), and inserting strips (21) are inserted into the two slots (20), and one side of the two inserting strips (21) is fixedly connected to one side of the right mold sleeve (8).

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