Double-color mold secondary core pulling device and double-color mold
By designing a combination of slider base, sliding block and two-fire drive slider in a two-color mold, the problem of difficulty in pulling the slider core in oblique hole products is solved, which improves production efficiency and simplifies the mold structure.
Patent Information
- Application Number
- CN202420953574.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When producing products with oblique holes, it is difficult to drive the slider core to slide out of the mold cavity through ordinary components, resulting in low production efficiency.
A two-color mold secondary core extraction device is designed, including a slider base, a sliding block and a two-fire drive slider. Through the cooperation of these components, the slider core is slide out in segments.
It effectively solves the problem of difficulty in pulling the slider core in inclined hole products, improves production efficiency, and simplifies the mold structure.
Smart Images
Figure CN222628419U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of double-color molds, in particular to a double-color mold secondary core-pulling device and a double-color mold. Background Art
[0002] With the development of technology, two-color molds have been used more and more in life. Two-color molds need to undergo two injection moldings during the production process. The first injection molding is completed at the primary injection molding position, and the second injection molding is completed at the secondary injection molding position. When producing products with holes and other types, a slider core needs to be inserted into the mold cavity. Then after the first injection molding is completed, the slider core inserted into the mold cavity needs to partially slide out of the mold cavity to provide enough space for the second injection molding. This step is called primary core pulling. After the second injection molding is completed, the slider core inserted into the mold cavity needs to slide out of the mold cavity completely to prevent interference with the slider core when the molded product is taken out. This step is called secondary core pulling.
[0003] When producing ordinary products, the holes on the products are generally horizontal or vertical. In the general production process, the parts also move in the horizontal or vertical direction. In this process, it is easier to arrange ordinary transmission parts to drive the slider core to complete the core pulling action. However, when producing products with inclined holes, because the direction of the inclined hole intersects with the movement direction of the production parts, it is difficult to drive the slider core to slide out through ordinary parts. This causes great inconvenience to production and seriously affects production efficiency. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide a two-color mold secondary core pulling device for making the slider core obliquely inserted into the mold cavity slide out of the mold cavity in sections, thereby completing the secondary core pulling of the slider core in the oblique hole.
[0005] The utility model provides a two-color mold secondary core pulling device, which is used to make a slider core obliquely inserted into a mold cavity slide out of the mold cavity in sections, and is characterized by comprising:
[0006] A slider base, the slider core is slidably connected to the slider base, the slider base can move away from the slider core, and is used to drive the slider core to slide out of the mold cavity, the slider base includes a slide groove, and the inner wall of the slide groove is divided into a first guide surface and a first fitting surface;
[0007] A sliding block, the sliding block is arranged on the first fitting surface, the sliding block is elastically connected to the sliding groove, and is used to retract the sliding block toward the first fitting surface when the sliding block is pressed;
[0008] A two-shot driving slider, the two-shot driving slider can move toward or away from the slide slot, the outer surface of the two-shot driving slider is divided into a second guide surface and a second fitting surface, the second guide surface abuts against the first guide surface, and is used to drive the slider base to move away from the slider core, the second fitting surface is provided with a guide portion, and the guide portion is fixedly connected to the two-shot driving slider;
[0009] When the second-shot driving slider moves toward the slide groove and drives the slider base to move away from the slider core, the second-shot driving slider drives the guide portion to move to the front of the sliding block, and the guide portion abuts against the sliding block;
[0010] When the second-shot driving slider moves away from the slide slot, the guide portion drives the sliding block to move along the guide portion, thereby driving the slider base to move away from the slider core through the sliding block.
[0011] In one embodiment, the end of the guide portion facing the slide slot is a first end, and a first abutting surface is provided on the side of the first end facing the sliding block. After the sliding block abuts against the first abutting surface, the sliding block retracts toward the first fitting surface.
[0012] In one embodiment, along the direction toward the sliding groove, the first abutting surface extends in a direction away from the first fitting surface on the same side.
[0013] In one embodiment, the slider base is further provided with a third guide surface, and the slider core is connected to the third guide surface and slides along the third guide surface.
[0014] In one embodiment, the slider base further includes a limit block, the limit block is spaced apart from the third guide surface to form a guide groove, and the guide groove is used to limit the sliding direction of the slider core.
[0015] In one embodiment, the slider core includes a main body and a guide block, the main body is used to be inserted into the mold cavity, the guide block is arranged at the end of the main body facing the third guide surface, and the guide block is engaged in the guide groove to drive the main body to slide along the third guide surface.
[0016] Another embodiment of the present application also provides a two-color mold, including a fixed block, a wear-resistant plate and the two-color mold secondary core pulling device as described above, wherein the fixed block is fixedly arranged, the wear-resistant plate is fixedly arranged, and the slider base is arranged between the fixed block and the wear-resistant plate, and the fixed block and the wear-resistant plate are used to limit the slider base so that the slider base moves in a direction close to or away from the slider core.
[0017] In one embodiment, the two-color mold further includes a primary injection molding position, a secondary injection molding position, and a rotating assembly, wherein the rotating assembly is transmission-connected to the slider base for driving the slider base to switch between the primary injection molding position and the secondary injection molding position.
[0018] In one embodiment, the two-color mold further includes a positioning block, which is engaged with the slider base, and the positioning block is used to prevent the slider base from sliding when switching between the primary injection molding position and the secondary injection molding position.
[0019] In one embodiment, the slider base is further provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged along the movement direction of the slider base. When the slider base slides close to or away from the slider core, the positioning block engages with different positioning grooves.
[0020] In the two-color mold secondary core-pulling device provided by the embodiment of the utility model, the slider core and the slider base are slidably connected in the two-color mold secondary core-pulling device, and the slider base slides relative to the slider core through the movement of the slider base, thereby realizing the primary core-pulling and secondary core-pulling of the slider core. The first movement of the slider base is driven to move the slider base through the cooperation between the two-shot driving slider and the slide groove; then a guide portion is provided on the two-shot driving slider, and a sliding block is provided on the inner wall of the slide groove, and the guide portion is abutted against the sliding block, so that the sliding block slides along the guide portion, thereby driving the slider base to move for the second time and completing the secondary core-pulling. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 This is an exploded view of a two-color mold secondary core pulling device according to an embodiment of the utility model.
[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the middle two-shot drive slider.
[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the middle slider base.
[0025] Figure 4 It is a schematic diagram of the actions during the secondary injection molding process.
[0026] Figure 5 for Figure 4Cross-sectional view at AA in the middle.
[0027] Figure 6 This is a cross-sectional view of the secondary injection molding process when the mold is closed.
[0028] Figure 7 This is a cross-sectional view of the secondary injection molding process when the mold is opened.
[0029] Figure 8 This is a cross-sectional view of the mold after one injection molding is completed. DETAILED DESCRIPTION
[0030] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of 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.
[0031] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like 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. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0032] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.
[0033] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.
[0034] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.
[0035] It should also be noted that in the embodiments of the present application, according to Figure 1The XYZ rectangular coordinate system established in is defined as follows: the side located in the positive direction of the X axis is defined as the front, and the side located in the negative direction of the X axis is defined as the back; the side located in the positive direction of the Y axis is defined as the left, and the side located in the negative direction of the Y axis is defined as the right; the side located in the positive direction of the Z axis is defined as the top, and the side located in the negative direction of the Z axis is defined as the bottom.
[0036] Please refer to Figures 1 to 7 , which shows a two-color mold secondary core pulling device provided in an embodiment of the utility model, which is used to make the slider core 1 obliquely inserted into the mold cavity slide out of the mold cavity in sections, including:
[0037] The slider base 2 is slidably connected to the slider core 1. The slider base 2 can move away from the slider core 1 to drive the slider core 1 to slide out of the mold cavity. The slider base 2 includes a slide groove 21. The inner wall of the slide groove 21 is divided into a first guide surface 211 and a first fitting surface 212.
[0038] The sliding block 3 is disposed on the first fitting surface 212, and the sliding block 3 is elastically connected to the slide groove 21, so as to retract the sliding block 3 toward the first fitting surface 212 when pressed;
[0039] A two-shot driving slider 4, which can move toward or away from the slide slot 21. The outer surface of the two-shot driving slider 4 is divided into a second guide surface 41 and a second fitting surface 42. The second guide surface 41 abuts against the first guide surface 211 and is used to drive the slider base 2 to move away from the slider core 1. The second fitting surface 42 is provided with a guide portion 43, and the guide portion 43 is fixedly connected to the two-shot driving slider 4;
[0040] When the second-shot driving slider 4 moves toward the slide slot 21 and drives the slider base 2 to move away from the slider core 1, the second-shot driving slider 4 drives the guide portion 43 to move to the front of the sliding block 3, and the guide portion 43 abuts against the sliding block 3;
[0041] When the second-shot driving slider 4 moves away from the slide slot 21 , the guide portion 43 drives the sliding block 3 to move along the guide portion 43 , thereby driving the slider base 2 to move away from the slider core 1 through the sliding block 3 .
[0042] like Figure 1 The figure shows an exploded view of the secondary core pulling device of the two-color mold in the secondary injection molding position. The slider base 2 can slide towards or away from the slider core 1 in the left and right direction, the second injection driving slider 4 can move towards or away from the slide groove 21 in the up and down direction, and the sliding block 3 can be extended and retracted in the front and back direction.
[0043] like Figure 2 As shown, the second bonding surface 42 is a plane, the second guide surface 41 is an inclined surface, and the guide portion 43 is provided on the second bonding surface 42 and is arranged obliquely. Figure 3 As shown, the first guide surface 211 is an inclined surface, and the first fitting surface 212 is a plane. The first guide surface 211 and the second guide surface 41 on the same side correspond to each other, and the inclination direction and inclination angle of the first guide surface 211 on the same side are equal to the inclination direction and inclination angle of the second guide surface 41 on the same side, so as to ensure that when the second-injection driving slider 4 moves toward the slide groove 21, the first guide surface 211 and the second guide surface 41 on the same side can fit together. Preferably, in this embodiment, the second-injection driving slider 4 uses a V-shaped block to make the structure more stable. Correspondingly, the slide groove 21 also uses a V-shaped groove.
[0044] Please refer to Figure 4 At this time, the slider core 1 in the secondary injection position is completely inserted into the product 9, and the core pulling has not been performed. Preferably, in this embodiment, the second shot driving slider 4 is connected to the second movable mold, and the second movable mold drives the second shot driving slider 4 to move up and down.
[0045] Please refer to Figures 4 to 6 At this time, the secondary injection position starts to close the mold, and the second movable mold drives the second-shot driving slider 4 to move toward the slide groove 21. Before the second-shot driving slider 4 moves toward the slide groove 21, the second-shot driving slider 4 is located at a position just above and to the right of the slide groove 21. Therefore, when the second-shot driving slider 4 moves toward the slide groove 21, it will abut against the first guide surface 211 through the second guide surface 41. Because the slider base 2 can move left and right, after the second guide surface 41 moves downward and abuts against the first guide surface 211, the slide groove 21 is driven to move to the right until the slide groove 21 moves to a position aligned with the second-shot driving slider 4.
[0046] Please refer to Figure 1 , along the front-to-back direction, the guide portion 43 protrudes forward on the second fitting surface 42, and the sliding block 3 protrudes backward on the first fitting surface 212, so the sliding block 3 will block the downward movement of the guide portion 43. Because the sliding block 3 is elastically connected to the slide groove 21, when the second-injection driving slider 4 moves downward, after the guide portion 43 abuts against the sliding block 3, the guide portion 43 can compress the sliding block 3 forward, thereby providing enough space for the guide portion 43 to move downward.
[0047] The slider core 1 is slidably connected to the slider base 2, so after the slider base 2 moves to the right, the slider base 2 and the slider core 1 slide relative to each other, thereby driving the slider core 1 to slide out of the product 9. And the distance that the slider core 1 slides out is related to the distance that the slider base 2 moves to the right. At this time, it is in the mold closing state of the secondary injection molding position, and secondary injection molding is still required, so the slider core 1 only partially slides out.
[0048] like Figure 6As shown, after the second movable mold completes the mold closing action, it drives the second-shot driving slider 4 to be inserted into the slide groove 21. And the slider base 2 drives the slider core 1 to complete the first core pulling, and the gap between the slider core 1 and the product 9 is used for secondary injection molding. At this time, the second-shot driving slider 4 drives the guide part 43 to move to the bottom of the sliding block 3, and after no longer being subjected to the pressure of the guide part 43, the sliding block 3 is driven to pop back by the elastic force, so that the sliding block 3 abuts against the guide part 43.
[0049] After the secondary injection molding is completed and the second movable mold is opened, the second movable mold drives the second injection driving slider 4 to move upward. The sliding block 3 is located above the guide portion 43 and abuts against the guide portion 43. When the guide portion 43 moves upward, it will drive the sliding block 3 to move upward together. Because the sliding block 3 is connected to the slider base 2 and cannot move upward, the sliding block 3 can only slide relatively along the guide portion 43. The upward movement of the guide portion 43 relative to the sliding block 3 can be understood as the downward movement of the sliding block 3 relative to the guide portion 43. Figure 6 As shown, the guide portion 43 is in an inclined state with the left side higher and the right side lower, so when the sliding block 3 moves downward relative to the guide portion 43, it also moves rightward, thereby driving the slider base 2 to move rightward again.
[0050] like Figure 7 As shown, at this time, the second movable mold has completed the mold opening, and drives the second shot driving slider 4 to be pulled out from the slide groove 21. At the same time, the slider base 2 also completes the second rightward movement, driving the slider core 1 to completely slide out of the product 9, completing the secondary core pulling.
[0051] In the present application, a two-color mold secondary core pulling device is designed to realize the secondary core pulling action after the slider core 1 is inserted into the inclined hole. The first movement of the slider base 2 is driven by the cooperation between the second shot driving slider 4 and the slide groove 21 to drive the slider base 2 to move; then a guide portion 43 is provided on the second shot driving slider 4, and a sliding block 3 is provided on the inner wall of the slide groove 21, and the guide portion 41 is abutted against the sliding block 3, so that the sliding block 3 slides along the guide portion 43, thereby driving the slider base 2 to move for the second time and completing the secondary pulling. And in the present application, the second shot driving slider 4 is connected to the second movable mold, and the second movable mold drives the second shot driving slider 4 to move up and down. The movement of the second shot driving slider 4 is integrated into the mold closing and opening actions of the second movable mold, without adding an additional driving device to drive the second shot driving slider 4 to move, which can make the structure simpler and save resources.
[0052] In one embodiment, the end of the guide portion 43 facing the slide slot 21 is a first end 431, and a first abutting surface 432 is provided on the side of the first end 431 facing the sliding block 3. After the sliding block 3 abuts against the first abutting surface 432, the sliding block 3 retracts toward the first abutting surface 212. In one embodiment, along the direction toward the slide slot 21, the first abutting surface 432 extends in a direction away from the first abutting surface 212 on the same side.
[0053] like Figure 2 As shown, the lower end of the guide portion 43 is a first end portion 431, and the front surface of the first end portion 431 is a first abutting surface 432. The guide portion 43 abuts against the sliding block 3 through the first abutting surface 432, so that the sliding block 3 gradually retracts forward along the first abutting surface 432. Please refer to Figure 1 and Figure 2 The first abutting surface 432 is an inclined surface, and the first abutting surface 432 is in an inclined state with a higher front and a lower rear.
[0054] like Figure 5 As shown, after the guide portion 43 contacts the sliding block 3, the guide portion 43 continues to move downward, thereby pressing the sliding block 3 to slide along the first contact surface 432. Because the first contact surface 432 is in an inclined state with a high front and a low back, the sliding block 3 retracts forward along the first contact surface 432, thereby avoiding blocking the downward movement of the guide portion 43.
[0055] In one embodiment, the slider base 2 is further provided with a third guide surface 22 , and the slider core 1 is connected to the third guide surface 22 and slides along the third guide surface 22 .
[0056] like Figure 3 As shown, a third guide surface 22 is provided on the left side of the slider base 2. Because the slider core 1 in this embodiment needs to move downward, so as to slide out in the product 9. Therefore, the third guide surface 22 is an inclined surface, and the third guide surface 22 is in an inclined state with the right side higher and the left side lower.
[0057] When the slider base 2 moves to the right, the third guide surface 22 is driven to move to the right together. When the third guide surface 22 moves to the right relative to the slider core 1, the slider core 1 moves to the left relative to the third guide surface 22. Since the left side of the third guide surface 22 is lower, the slider core 1 moves downward along the third guide surface 22, thereby sliding out of the product 9 to realize the core pulling action.
[0058] In one embodiment, the slider base 2 further includes a limit block 23, and the limit block 23 is arranged at an interval with the third guide surface 22 to form a guide groove 24, and the guide groove 24 is used to limit the sliding direction of the slider core 1. In one embodiment, the slider core 1 includes a main body 11 and a guide block 12, the main body 11 is used to be inserted into the mold cavity, the guide block 12 is arranged at the end of the main body 11 facing the third guide surface 22, and the guide block 12 is engaged in the guide groove 24 to drive the main body 11 to slide along the third guide surface 22.
[0059] like Figure 3 As shown, a stopper 23 is provided above the third guide surface 22, and the stopper 23 is fixedly mounted on the slider base 2. The surface of the stopper 23 facing the third guide surface 22 is parallel to the third guide surface 22, thereby forming a guide groove 24 with the third guide surface 22. Figure 1 As shown, the lower end of the slider core 1 is T-shaped. Guide blocks 12 are provided on both the front and rear sides of the main body 11, and the thickness of the guide block 12 is less than or equal to the distance between the limit block 23 and the third guide surface 22, so that the guide block 12 can be engaged in the guide groove 24. Similarly, limit blocks 23 are arranged on both the front and rear sides of the third guide surface 22, so as to form two guide grooves 24 to cooperate with the two guide blocks 12.
[0060] In this embodiment, the guide groove 24 cooperates with the guide block 12 to make the sliding process of the slider core 1 along the third guide surface 22 more stable.
[0061] Another embodiment of the present application also provides a two-color mold, including a fixed block 5, a wear-resistant plate 6 and the two-color mold secondary core pulling device as described above, the fixed block 5 is fixedly set, the wear-resistant plate 6 is fixedly set, the slider base 2 is arranged between the fixed block 5 and the wear-resistant plate 6, the fixed block 5 and the wear-resistant plate 6 are used to limit the slider base 2, so that the slider base 2 moves in a direction close to or away from the slider core 1.
[0062] like Figure 1 As shown, the entire slider base 2 is arranged on the wear-resistant plate 6 and can slide relative to the wear-resistant plate 6. Step grooves are also provided on the front and rear sides above the slider base 2, and the fixed block 5 is engaged in the step grooves. There are also two fixed blocks 5 (one of which is shown as an example in the figure), which are respectively engaged in the front and rear step grooves of the slider base 2. The fixed block 5 is fixedly arranged on the slider base 2, and the wear-resistant plate 6 is fixedly arranged below the slider base 2, so as to prevent the slider base 2 from moving up and down. The two fixed blocks 5 are fixedly arranged on the front and rear sides of the slider base 2, so as to prevent the slider base 2 from moving forward and backward. In this embodiment, the slider base 2 is limited by the fixed block 5 and the wear-resistant plate 6 to ensure the stability of the left and right movement of the slider base 2.
[0063] In one embodiment, the two-color mold further includes a primary injection position, a secondary injection position, and a rotating assembly, which is transmission-connected to the slider base 2 for driving the slider base 2 to switch between the primary injection position and the secondary injection position.
[0064] like Figure 1 As shown, at this time, the slider core 1, the slider base 2, and the second-shot driving slider 4 and other components are all located at the secondary injection molding position, and the first-shot driving slider 8 is located at the primary injection molding position. After the slider core 1 and the slider base 2 and other components complete the secondary injection molding at the secondary injection molding position, the slider core 1 and the slider base 2 and other components are driven by the rotating assembly to rotate 180° around the Z axis to the primary injection molding position, and the injection molding is restarted. The surface of the first-shot driving slider 8 is not provided with a protrusion, and along the front-to-back direction, the distance between the surface of the first-shot driving slider 8 and the first fitting surface 212 is greater than the distance of the protrusion of the slider block 3 on the first fitting surface 212. Therefore, when the first-shot driving slider 8 moves downward, it will not abut against the slider block 3 and will not be affected by the slider block 3.
[0065] like Figure 8 As shown, when the first shot drives the slider 8 to move downward, the slider base 2 is driven to move rightward. At this time, the slider base 2 rotates 180 degrees, so the rightward movement of the slider base 2 drives the slider core 1 to be inserted upward into the mold cavity, thereby forming an oblique hole in the product 9.
[0066] In one embodiment, the two-color mold further includes a positioning block 7, which is engaged with the slider base 2, and the positioning block 7 is used to prevent the slider base 2 from sliding when switching between the primary injection position and the secondary injection position. In one embodiment, the slider base 2 is also provided with a plurality of positioning grooves 25, and the plurality of positioning grooves 25 are arranged along the movement direction of the slider base 2. When the slider base 2 slides close to or away from the slider core 1, the positioning block 7 is engaged with different positioning grooves 25.
[0067] like Figure 1 As shown, the positioning block 7 is cylindrical and has a protrusion at the bottom. The positioning block 7 is engaged with the slider base 2 through the protrusion at the bottom. When the rotating assembly drives the slider base 2 to rotate, the slider base 2 is subjected to the centrifugal force and may slide. Therefore, in this embodiment, the positioning block 7 is used to clamp the slider base 2 to prevent the slider base 2 from sliding when rotating.
[0068] In this embodiment, two positioning grooves 25 are provided, and the shape of the positioning grooves 25 corresponds to the shape of the protrusion at the bottom of the positioning block 7. Figure 4As shown, preferably, the cross section of the positioning groove 25 is an arc shape. Because the slider base 2 includes three states in total, namely, the primary injection molding state, the primary core pulling state and the secondary core pulling state. The slider base 2 needs to move to the right in the secondary injection molding position to be able to change from the primary injection molding state to the primary core pulling state, and then to the secondary core pulling state. Therefore, when the slider base 2 moves to the right, the arc-shaped protrusion at the bottom of the positioning block 7 will slide relative to the positioning groove 25, thereby sliding out of the positioning groove 25.
[0069] like Figure 4 As shown, at this time, the positioning block 7 is engaged with the first positioning groove 25. Figure 6 As shown, at this time, the positioning block 7 slides out from the first positioning groove 25 and is located between the two positioning grooves 25. Figure 7 As shown, at this time, the positioning block 7 is engaged with the second positioning groove 25. Therefore, in this embodiment, the driving force for the movement of the slider base 2 is greater than the maximum static friction between the positioning block 7 and the positioning groove 25, and the maximum static friction between the positioning block 7 and the positioning groove 25 is greater than the maximum centrifugal force received by the slider base 2 when it rotates, thereby ensuring that the slider base 2 can drive the positioning groove 25 and the positioning block 7 to slide relative to each other when it moves, but the slider base 2 will not slide when it rotates.
[0070] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.
Claims
1. A two-color mold secondary core pulling device, used to make a slider core (1) inserted obliquely into a mold cavity slide out of the mold cavity in sections, characterized in that: include: A slider base (2), the slider core (1) being slidably connected to the slider base (2), the slider base (2) being movable away from the slider core (1) to drive the slider core (1) to slide out of the mold cavity, the slider base (2) comprising a slide groove (21), the inner wall of the slide groove (21) being divided into a first guide surface (211) and a first fitting surface (212); a sliding block (3), the sliding block (3) being arranged on the first fitting surface (212), the sliding block (3) being elastically connected to the sliding groove (21) and being used for causing the sliding block (3) to retract towards the first fitting surface (212) when being pressed; a two-shot driving slider (4), the two-shot driving slider (4) being movable toward or away from the slide groove (21), the outer surface of the two-shot driving slider (4) being divided into a second guide surface (41) and a second fitting surface (42), the second guide surface (41) being in contact with the first guide surface (211) and being used for driving the slider base (2) to move away from the slider core (1), the second fitting surface (42) being provided with a guide portion (43), the guide portion (43) being fixedly connected to the two-shot driving slider (4); When the second-shot driving slider (4) moves toward the slide groove (21) and drives the slider base (2) to move away from the slider core (1), the second-shot driving slider (4) drives the guide portion (43) to move to the front of the sliding block (3), and the guide portion (43) abuts against the sliding block (3); When the second-shot driving slider (4) moves away from the slide groove (21), the guide portion (43) drives the sliding block (3) to move along the guide portion (43), thereby driving the slider base (2) to move away from the slider core (1) through the sliding block (3).
2. The double-color mold secondary core-pulling device according to claim 1, characterized in that: The end of the guide portion (43) facing the slide groove (21) is a first end (431), and a first abutting surface (432) is provided on a side of the first end (431) facing the sliding block (3). After the sliding block (3) abuts against the first abutting surface (432), the sliding block (3) retracts toward the first fitting surface (212).
3. The double-color mold secondary core-pulling device according to claim 2, characterized in that: Along the direction towards the slide groove (21), the first abutment surface (432) extends in a direction away from the first fitting surface (212) on the same side.
4. The double-color mold secondary core-pulling device according to claim 1, characterized in that: The slider base (2) is also provided with a third guide surface (22), and the slider core (1) is connected to the third guide surface (22) and slides along the third guide surface (22).
5. The double-color mold secondary core-pulling device according to claim 4, characterized in that: The slider base (2) further comprises a limit block (23), wherein the limit block (23) and the third guide surface (22) are arranged at an interval to form a guide groove (24), and the guide groove (24) is used to limit the sliding direction of the slider core (1).
6. The double-color mold secondary core-pulling device according to claim 5, characterized in that: The slider core (1) comprises a main body (11) and a guide block (12), wherein the main body (11) is used to be inserted into a mold cavity, and the guide block (12) is arranged at the end of the main body (11) facing the third guide surface (22), and the guide block (12) is engaged in the guide groove (24) to drive the main body (11) to slide along the third guide surface (22).
7. A two-color mold, characterized in that: The invention comprises a fixed block (5), a wear-resistant plate (6), and a two-color mold secondary core pulling device as described in any one of claims 1 to 6, wherein the fixed block (5) is fixedly arranged, the wear-resistant plate (6) is fixedly arranged, the slider base (2) is arranged between the fixed block (5) and the wear-resistant plate (6), and the fixed block (5) and the wear-resistant plate (6) are used to limit the slider base (2) so that the slider base (2) moves in a direction close to or away from the slider core (1).
8. The two-color mold according to claim 7, characterized in that: The two-color mold further comprises a primary injection position, a secondary injection position and a rotating assembly, wherein the rotating assembly is transmission-connected to the slider base (2) and is used to drive the slider base (2) to switch between the primary injection position and the secondary injection position.
9. The two-color mold according to claim 8, characterized in that: The two-color mold further comprises a positioning block (7), wherein the positioning block (7) is engaged with the slider base (2), and the positioning block (7) is used to prevent the slider base (2) from sliding when switching between the primary injection molding position and the secondary injection molding position.
10. The two-color mold according to claim 9, characterized in that: The slider base (2) is further provided with a plurality of positioning grooves (25), wherein the plurality of positioning grooves (25) are arranged along the movement direction of the slider base (2), and when the slider base (2) slides close to or away from the slider core (1), the positioning block (7) engages with different positioning grooves (25).