Core pulling structure in sliding block

Abstract

The utility model relates to the technical field of dies, in particular to a core pulling structure in a sliding block. The injection mold comprises a front mold base and a rear mold base arranged below the front mold base, a support is fixed to the bottom of the rear mold base, an injection product is formed on the inner side of the front mold base and the inner side of the rear mold base in an injection molding mode, and a core pulling mechanism is assembled between the front mold base and the rear mold base and used for assisting demolding of the injection product. The core pulling mechanism comprises a core pulling sliding block, an inclined guide column, a matching inclined hole and displacement guide inserts, the displacement guide inserts are fixed to the two sides of one end of the rear mold base, and the core pulling sliding block is connected between the two displacement guide inserts in a sliding mode. Through the structural design of the core-pulling mechanism and the change-over mechanism, the device is convenient for assisting the demolding of an injection molding product, and can be quickly replaced when the inclined guide pillar is seriously abraded or damaged, so that the reduction of the matching precision of the inclined guide pillar and the matched inclined hole is avoided, the working efficiency is improved, and the normal proceeding of the demolding process is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a core-pulling structure in a slide block. Background Art

[0002] In today's manufacturing landscape, molds occupy a pivotal position and have become an indispensable key tool on the production line. The mold, a cavity tool with a specific shape and size, can accurately inject high-temperature liquid materials into its cavity when working in conjunction with other systems or auxiliary mechanisms, thereby efficiently producing industrial parts with predetermined shapes, sizes, functions and quality standards. The realization of this process once again confirms the core value and irreplaceability of molds in the manufacturing industry. For example, in the processing of injection molds, many products have undercuts in the internal direction, and cannot be demolded and ejected normally. Therefore, a core-pulling structure in the slider that matches the mold is required for demolding;

[0003] For example, a core-pulling structure in a slider with a publication (announcement) number of CN210851120U includes a fixed mold insert, an inclined guide column, and a slide seat arranged on a movable mold, wherein the inclined guide column is slidably matched with an inclined guide groove arranged on the slide seat; the slider insert, a first slider insert, a second slider insert, an insert unit, and a buckle, wherein the slider insert and the insert unit are fixed to the side of the slide seat, and the insert unit is located below the slider insert; the first slider insert can be movably matched to the side of the slider insert; the second slider insert is fixed to the first slider insert and passes through the insert unit to cooperate with the insert unit to form a screw-discharging sink for the injection molded part; the buckle is arranged on the fixed mold insert, and the buckle buckles the first slider insert in the mold closing state, and is disengaged from the first slider insert as the slide seat moves toward the side core-pulling direction;

[0004] In summary, it can be seen that the following technical problems exist in the prior art: although the above-mentioned prior art can realize core pulling and demolding during use, since the inclined guide pin is fixed to the mold, during long-term injection molding operations, when the inclined guide pin is worn or damaged by the inclined guide groove, the gap between the inclined guide pin and the inclined guide groove becomes larger, the guiding accuracy is reduced, and it is not convenient to replace. For this reason, we propose a core pulling structure inside the slider. Utility Model Content

[0005] The purpose of the utility model is to provide a core-pulling structure in a slider to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A core-pulling structure in a slider comprises a front mold base and a rear mold base arranged below the front mold base, a support is fixed to the bottom of the rear mold base, an injection molded product is injection molded on the inner sides of the front mold base and the rear mold base, a core-pulling mechanism is arranged between the front mold base and the rear mold base, the core-pulling mechanism is used to assist in demolding the injection molded product, the core-pulling mechanism comprises a core-pulling slider, an inclined guide column, a matching inclined hole and a displacement guide insert, displacement guide inserts are fixed on both sides of one end of the rear mold base, a core-pulling slider is slidably connected between the two displacement guide inserts, the core-pulling slider is in close contact with the injection molded product, two inclined guide columns are arranged at the bottom of the front mold base and at a position corresponding to the core-pulling slider, matching inclined holes corresponding to the positions of the inclined guide columns are provided at both ends of the top of the core-pulling slider, and the matching inclined holes are slidably connected to the inclined guide columns.

[0008] Preferably, an undercut head is fixed on a side of the core-pulling slider close to the injection-molded product, an undercut opening corresponding to the position of the undercut head is opened on the inner side of the injection-molded product, and the undercut opening is transitionally matched with the undercut head.

[0009] Preferably, the inclined guide columns are arranged obliquely to the horizontal plane.

[0010] Preferably, a switching mechanism is installed between the front mold base and the oblique guide pillar, and the switching mechanism is used for connecting the front mold base and the oblique guide pillar.

[0011] Preferably, the switching mechanism includes a top groove, a docking column and an anti-slip device. Top grooves are provided at both ends of the inner top of the front mold base. Docking columns are fixed to the top of the inner side of the top groove. The docking columns are slidably connected to the inner side of the inclined guide column, and an anti-slip device is installed between the docking columns and the inclined guide column.

[0012] Preferably, the anti-falling device includes a carrying column, a through hole, a load-bearing partition, a through slot, a spring and an anti-falling block. The outer side of the inclined guide column is provided with a through hole, the through hole is connected with the inner side of the inclined guide column, the inner side of the through hole is slidably connected with the carrying column, one end of the inner side of the through hole is fixed with a load-bearing partition, the inner side of the carrying column is provided with a through slot, the through slot is slidably connected with the load-bearing partition, the through slot is slidably connected with the docking column, one end of the inner side of the through slot is fixed with a spring, one end of the spring is fixed to the load-bearing partition, the other end of the inner side of the through slot is fixed with a plurality of anti-falling blocks, the outer side of the docking column is provided with a plurality of recessed grooves corresponding to the positions of the anti-falling blocks, and the anti-falling blocks are slidably connected with the recessed grooves.

[0013] Preferably, the four end corners at the bottom of the front mold base are all fixed with positioning columns, and the four end corners at the top of the rear mold base are all fixed with positioning holes, and the positioning holes are slidably connected to the positioning columns.

[0014] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0015] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0016] The utility model makes it easy to assist in demoulding of injection molded products through the structural design of the core pulling mechanism and the switching mechanism. At the same time, the inclined guide pin can be quickly replaced when it is severely worn or damaged, avoiding reducing the matching accuracy of the inclined guide pin and the matching inclined hole, speeding up the work efficiency and facilitating the normal progress of the demoulding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments 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 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the connection structure between the front mold base and the rear mold base of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure of the core-pulling slider and the displacement guide insert of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection structure between the front mold base and the top groove of the utility model;

[0022] Figure 5 It is a schematic diagram of the cutaway structure of the inclined guide column of the utility model;

[0023] Figure 6 This is a schematic diagram of the connection structure of the carrying column and the through hole of the utility model;

[0024] Figure 7 For this utility model Figure 5 Enlarged structural diagram at A in the middle.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] In the figure: 1. front mold base; 2. rear mold base; 3. support; 4. injection molded product; 5. core-pulling slider; 6. inclined guide column; 7. matching inclined hole; 8. displacement guide insert; 9. undercut head; 10. undercut mouth; 11. top groove; 12. docking column; 13. carrying column; 14. through hole; 15. load-bearing partition; 16. through groove; 17. spring; 18. anti-falling block; 19. positioning column; 20. positioning hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] Example 1

[0029] Reference Figure 1-3 , a core-pulling structure in a slider, comprising a front mold base 1, and a rear mold base 2 arranged below the front mold base 1, a support 3 is fixed to the bottom of the rear mold base 2, an injection molded product 4 is injection molded on the inner side of the front mold base 1 and the rear mold base 2, a core-pulling mechanism is arranged between the front mold base 1 and the rear mold base 2, the core-pulling mechanism is used to assist the demoulding of the injection molded product 4, the core-pulling mechanism comprises a core-pulling slider 5, an inclined guide column 6, a matching inclined hole 7 and a displacement guide insert 8, displacement guide inserts 8 are fixed on both sides of one end of the rear mold base 2, a core-pulling slider 5 is slidably connected between the two displacement guide inserts 8, the core-pulling slider 5 is in contact with the injection molded product 4, two inclined guide columns 6 are arranged at the bottom of the front mold base 1 and at a position corresponding to the core-pulling slider 5, matching inclined holes 7 corresponding to the positions of the inclined guide columns 6 are opened at both ends of the top of the core-pulling slider 5, and the matching inclined holes 7 are slidably connected with the inclined guide columns 6.

[0030] A buckle head 9 is fixed on one side of the core-pulling slider 5 close to the injection molded product 4, and an undercut opening 10 corresponding to the position of the undercut head 9 is opened on the inner side of the injection molded product 4. The undercut opening 10 is transitionally matched with the undercut head 9. Different injection molds correspond to different injection molded products 4, so a variety of undercut openings 10 are also provided on the inner sides of different injection molded products 4.

[0031] The inclined guide pillars 6 are arranged at an inclination with respect to the horizontal plane. Through the arrangement of the inclined guide pillars 6, when the inclined guide pillars 6 move upward, the core-pulling slider 5 can move horizontally along the inner side of the displacement guide insert 8 with the cooperation of the inclined holes 7.

[0032] The four end corners at the bottom of the front mold base 1 are fixed with positioning columns 19, and the four end corners at the top of the rear mold base 2 are fixed with positioning holes 20. The positioning holes 20 are slidably connected to the positioning columns 19. Through the cooperation of the positioning columns 19 and the positioning holes 20, a guiding function can be provided for the connection between the front mold base 1 and the rear mold base 2.

[0033] Example 2

[0034] Embodiment 1 is further optimized, specifically, as Figure 4-7 As shown, a switching mechanism is installed between the front mold base 1 and the inclined guide column 6, and the switching mechanism is used for connecting the front mold base 1 and the inclined guide column 6.

[0035] The switching mechanism includes a top groove 11, a docking column 12 and an anti-slip device. Top grooves 11 are provided at both ends of the inner top of the front mold base 1. Docking columns 12 are fixed to the top of the inner side of the top groove 11. The docking columns 12 are slidably connected to the inner side of the inclined guide column 6. An anti-slip device is installed between the docking columns 12 and the inclined guide column 6. It can be understood that the anti-slip device is located on the inner side of the top groove 11 and does not hinder the connection between the inclined guide column 6 and the matching inclined hole 7.

[0036] The anti-drop device includes a carrying column 13, a through hole 14, a load-bearing partition 15, a through slot 16, a spring 17 and an anti-drop block 18. The outer side of the inclined guide column 6 is provided with a through hole 14, and the through hole 14 is connected to the inner side of the inclined guide column 6. The inner side of the through hole 14 is slidably connected with the carrying column 13, and one end of the inner side of the through hole 14 is fixed with a load-bearing partition 15. The inner side of the carrying column 13 is provided with a through slot 16, and the through slot 16 is slidably connected with the load-bearing partition 15. The through slot 16 is slidably connected to the docking column 12, and a spring 17 is fixed to one end of the inner side of the through slot 16, one end of the spring 17 is fixed to the load-bearing partition 15, and a plurality of anti-falling blocks 18 are fixed to the other end of the inner side of the through slot 16. A plurality of recessed grooves corresponding to the positions of the anti-falling blocks 18 are provided on the outer side of the docking column 12, and the anti-falling blocks 18 are slidably connected to the recessed grooves. The spring 17 is in a semi-compressed state in the initial state, so that the connection between the anti-falling blocks 18 and the recessed grooves is more firmly established.

[0037] From the above, we can know that:

[0038] The utility model is aimed at the following technical problems: the existing technology can realize core pulling and demoulding during use, but because the inclined guide pin is fixed to the mold, during the long-term injection molding operation, when the inclined guide pin is worn or damaged by the inclined guide groove, the gap between the inclined guide pin and the inclined guide groove becomes larger, the guiding accuracy is reduced, and it is not convenient to replace; the technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solutions is:

[0039] During use, when the injection molding of the injection molded product 4 is completed and cooled, when the mold is opened, the front mold base 1 drives the inclined guide column 6 to move upward. Because the inclined guide column 6 is slidably connected with the matching inclined hole 7, and the inclined guide column 6 is arranged obliquely, the core-pulling slider 5 is slidably connected with the displacement guide insert 8, so under the guidance of the matching inclined hole 7, the core-pulling slider 5 can move along the inner side of the displacement guide insert 8, so that the core-pulling slider 5 drives the undercut head 9 to separate from the undercut mouth 10. At this time, the injection molded product 4 is no longer limited by the undercut head 9, and the injection molded product 4 can be ejected and demolded by the ejection assembly in the support 3;

[0040] When the inclined guide column 6 is severely worn or damaged in the later stage, the carrying column 13 is pressed to make the carrying column 13 move along the inner side of the through hole 14, so that the spring 17 is squeezed and contracted by the load-bearing partition 15, so that the anti-falling block 18 is separated from the recessed groove on the outer side of the docking column 12. At this time, the inclined guide column 6 is pulled to separate the inclined guide column 6 from the docking column 12, and then a new inclined guide column 6 is replaced, and the carrying column 13 on the new inclined guide column 6 is pressed so that the docking column 12 can be inserted into the inner side of the inclined guide column 6. Then the carrying column 13 is released, so that the load-bearing partition 15 generates elastic force to push, and the carrying column 13 moves and resets until the anti-falling block 18 is connected to the recessed groove on the outer side of the docking column 12, forming a reconnection between the inclined guide column 6 and the docking column 12, and the replacement of the inclined guide column 6 can be realized.

[0041] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0042] The utility model uses the structural design of the core pulling mechanism and the switching mechanism to make the device convenient for assisting the demoulding of the injection molded product 4. At the same time, the inclined guide column 6 can be quickly replaced when it is severely worn or damaged, avoiding reducing the matching accuracy of the inclined guide column 6 and the matching inclined hole 7, speeding up the work efficiency and facilitating the normal progress of the demoulding process.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A core pulling structure in a slider, characterized in that: The invention comprises a front mold base (1) and a rear mold base (2) arranged below the front mold base (1), a support (3) being fixed at the bottom of the rear mold base (2), an injection molded product (4) being injection molded on the inner sides of the front mold base (1) and the rear mold base (2), a core pulling mechanism being arranged between the front mold base (1) and the rear mold base (2), the core pulling mechanism being used to assist in demoulding the injection molded product (4), the core pulling mechanism comprising a core pulling slider (5), an inclined guide column (6), a matching inclined hole (7) and a displacement guide insert (8), displacement guide inserts (8) being fixed on both sides of one end of the rear mold base (2), a core pulling slider (5) being slidably connected between the two displacement guide inserts (8), the core pulling slider (5) being in close contact with the injection molded product (4), the bottom of the front mold base (1) and the core pulling slider (5) being in close contact with the injection molded product (4), Two inclined guide pillars (6) are installed at positions corresponding to the slider (5); both ends of the top of the core-pulling slider (5) are provided with matching inclined holes (7) corresponding to the positions of the inclined guide pillars (6); the matching inclined holes (7) are slidably connected to the inclined guide pillars (6); a switching mechanism is installed between the front mold base (1) and the inclined guide pillars (6); the switching mechanism is used for connecting the front mold base (1) and the inclined guide pillars (6); the switching mechanism comprises a top groove (11), a docking pillar (12) and an anti-slip device; both ends of the top of the inner side of the front mold base (1) are provided with a top groove (11); the top of the inner side of the top groove (11) is fixed with a docking pillar (12); the docking pillar (12) is slidably connected to the inner side of the inclined guide pillar (6); an anti-slip device is installed between the docking pillar (12) and the inclined guide pillar (6).

2. A core-pulling structure in a slider according to claim 1, characterized in that: An undercut head (9) is fixed to one side of the core-pulling slider (5) close to the injection-molded product (4), an undercut opening (10) corresponding to the position of the undercut head (9) is provided on the inner side of the injection-molded product (4), and the undercut opening (10) is transitionally matched with the undercut head (9).

3. A core-pulling structure in a slider according to claim 2, characterized in that: The inclined guide columns (6) are all arranged obliquely to the horizontal plane.

4. The core-pulling structure in a slider according to claim 1, characterized in that: The anti-drop device comprises a carrying column (13), a through hole (14), a load-bearing partition (15), a through slot (16), a spring (17) and an anti-drop block (18); the outer side of the inclined guide column (6) is provided with a through hole (14); the through hole (14) is communicated with the inner side of the inclined guide column (6); the inner side of the through hole (14) is slidably connected with the carrying column (13); one end of the inner side of the through hole (14) is fixed with a load-bearing partition (15); the inner side of the carrying column (13) is provided with a through slot (16); The through-through groove (16) is slidably connected to the load-bearing partition (15), and the through-through groove (16) is slidably connected to the docking column (12). A spring (17) is fixed to one end of the inner side of the through-through groove (16), and one end of the spring (17) is fixed to the load-bearing partition (15). A plurality of anti-falling blocks (18) are fixed to the other end of the inner side of the through-through groove (16). A plurality of recessed grooves corresponding to the positions of the anti-falling blocks (18) are provided on the outer side of the docking column (12), and the anti-falling blocks (18) are slidably connected to the recessed grooves.

5. The core-pulling structure in a slider according to claim 1, characterized in that: The four end corners at the bottom of the front mold base (1) are all fixed with positioning columns (19), and the four end corners at the top of the rear mold base (2) are all fixed with positioning holes (20), and the positioning holes (20) are slidably connected to the positioning columns (19).

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