A core pulling mechanism and injection mold

Abstract

The present invention relates to the field of mold technology, and specifically to a core pulling mechanism and an injection mold. The core pulling mechanism of the present invention includes a driving mechanism, a limiting member, a first core pulling slider and a second core pulling slider; the driving mechanism is connected to the first core pulling slider for driving the first core pulling slider to move along the first core pulling direction; the first core pulling slider is connected to the second core pulling slider in a sliding manner along the second straight line direction; the limiting member is used to guide the second core pulling slider to move along the second core pulling direction; the second straight line direction is inclined relative to the first core pulling direction and the third core pulling direction respectively; the first core pulling slider includes a first slider body and a stopper, and the stopper is connected to the first slider body; the second core pulling slider includes a second slider body and a stopper structure, and the stopper structure is connected to the second slider body; the stopper cooperates with the stopper structure in a limiting manner. By setting two core pulling sliders, three core pullings can be achieved, which is relatively more space-saving.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a core pulling mechanism and an injection mold. Background Art

[0002] For the molding of a specific structure of a product, the movable mold and the fixed mold are usually used to drive the slider to move for core pulling. For core pulling in multiple directions of the product, multiple sliders are required for core pulling. The number of sliders is usually the same as the direction in which the core needs to be pulled, resulting in a more complex mold structure and a larger space. Summary of the invention

[0003] The problem solved by the invention is to provide a core pulling mechanism which can realize core pulling movement in multiple directions through two slide blocks.

[0004] In order to solve the above problems, the present invention provides a core pulling mechanism, including a driving mechanism, a limiting member, a first core pulling slider and a second core pulling slider; the driving mechanism is drivingly connected to the first core pulling slider, and the driving mechanism is used to drive the first core pulling slider to move along the first core pulling direction; the first core pulling slider is slidably connected to the second core pulling slider along the second straight line direction; the limiting member is used to guide the second core pulling slider to move along the second core pulling direction; the second straight line direction is inclined relative to the first core pulling direction and the third core pulling direction respectively;

[0005] The first core-pulling slider includes a first slider body and a stopper, and the stopper is connected to the first slider body; the second core-pulling slider includes a second slider body and a stopper structure, and the stopper structure is connected to the second slider body; the stopper is limitedly matched with the stopper structure.

[0006] Thus, the first core-pulling slider is driven by the driving mechanism to perform the first core-pulling direction, and the first core-pulling slider is slidably connected to the second core-pulling slider. When the first core-pulling slider drives the second core-pulling slider to move, under the action of the limiting member and the second core-pulling slider, the second core-pulling slider is realized along the second core-pulling direction. Due to the mutual cooperation between the stop structure and the stop member, when the second core-pulling slider is separated from the limiting member, the first core-pulling slider drives the second core-pulling slider to perform the third core-pulling along the first core-pulling direction. The three core-pulling can be realized by setting two core-pulling sliders, which saves relatively more space.

[0007] Optionally, an inclined guide rail is provided on the first core-pulling slider, and an inclined guide groove is provided on the second core-pulling slider; or an inclined guide groove is provided on the first core-pulling slider, and an inclined guide rail is provided on the second core-pulling slider; the inclined guide rail and the inclined guide groove are slidably connected along the second straight line direction.

[0008] Therefore, through the setting of the inclined guide rail and the inclined guide groove, the sliding connection between the first core-pulling slider and the second core-pulling slider is realized. On the one hand, the relative sliding of the first core-pulling slider and the second core-pulling slider is realized, and on the other hand, the conversion of oblique force is realized, so that the movement of the first core-pulling slider along the first core-pulling direction is converted into the movement of the second core-pulling slider along the second core-pulling direction.

[0009] Optionally, the second core-pulling slider further includes a first limiting structure, the first limiting structure is connected to the second slider body, and the first limiting structure is slidably connected to the limiting member along the third core-pulling direction.

[0010] Therefore, by setting the first limiting structure, the sliding connection between the second core-pulling slider and the limiting member is achieved, and the sliding of the second core-pulling slider is guided.

[0011] Optionally, a guide groove is provided on the second sliding block body, and the stopper is slidably connected to the guide groove.

[0012] Therefore, by setting the guide groove, the movement of the stop member is guided to avoid deviation between the stop member and the stop structure.

[0013] Optionally, an elastic member is further included, and two ends of the elastic member are respectively connected to the first core-pulling slider and the second core-pulling slider.

[0014] Therefore, when the stopper interacts with the stop structure, the elastic member cooperates with the stopper and the stop structure to jointly realize the first core-pulling slider pulling the second core-pulling slider to move.

[0015] Optionally, the elastic member is a compression spring.

[0016] Thus, the compression spring can push the second core-pulling slider away from the limiting member, thereby reducing the friction between the second core-pulling slider and the limiting member, and making the second core-pulling slider move more smoothly along the second core-pulling direction. When closing the mold, the compression spring can also push the second core-pulling slider to move, avoiding interference between the second core-pulling slider and the limiting member, and facilitating mold closing.

[0017] Optionally, it further includes a fixed mold, the fixed mold is provided with a second limiting structure, the first core-pulling slider also includes a stopper, the stopper is connected to the first slider body, and the second limiting structure cooperates with the stopper.

[0018] Thus, the second limiting structure cooperates with the stopper to prevent the driving mechanism from driving the first core-pulling slider to move before the mold is opened.

[0019] Optionally, it further includes a movable mold and a pressure strip, wherein the pressure strip is connected to the movable mold, and the pressure strip is used to limit the movement of the first core-pulling slider along the first core-pulling direction.

[0020] Therefore, by setting the guide strip, the movement of the first core-pulling slider along the first core-pulling direction is guided.

[0021] Optionally, the second core-pulling slider further includes a first guide structure, the movable mold is provided with a second guide structure, and the first guide structure is slidably connected to the second guide structure along the first core-pulling direction.

[0022] Therefore, through the arrangement of the second guide structure, on the one hand, support for the second core-pulling slider is formed, and on the other hand, it is used to cooperate with the first guide structure on the second core-pulling slider to guide the movement of the second core-pulling slider.

[0023] Optionally, it further comprises a limiter and a limit block, wherein the limit block is connected to the first core-pulling slider, the limiter is arranged on the movable mold, and the limiter cooperates with the limit block in limiting manner.

[0024] Therefore, the position of the first core-pulling slider in the mold closing and mold opening states is limited by the cooperation between the limiter and the limit block, thereby preventing the first core-pulling slider from colliding with other structures on the injection mold and causing damage to the mold.

[0025] The present invention also provides an injection mold, comprising any of the core pulling mechanisms described above.

[0026] The beneficial effects of the injection mold are the same as those of the core pulling mechanism described above, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a product in an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the cooperation between the core pulling mechanism and the product in the embodiment of the present invention;

[0029] Figure 3 For the present invention Figure 2 The cross-sectional view along section AA at point B in the middle;

[0030] Figure 4 It is a cross-sectional view of the injection mold in the mold closing state in an embodiment of the present invention;

[0031] Figure 5 For the present invention Figure 4 A partial enlarged view of point C in the middle;

[0032] Figure 6 A cross-sectional view of a guide groove in an embodiment of the present invention;

[0033] Figure 7 For the present invention Figure 6 A local enlarged view of D in FIG.

[0034] Figure 8 It is a schematic diagram of the second core-pulling slider after it is separated from the limiting member in the embodiment of the present invention;

[0035] Fig. 9 For the present invention Figure 8 A local enlarged view of point E in FIG.

[0036] Fig.10 It is a schematic diagram of the second core-pulling slider in the embodiment of the present invention moving along the first core-pulling direction;

[0037] Fig.11 For the present invention Fig.10 A local enlarged view of F in FIG.

[0038] Fig.12 It is an axonometric view of the core pulling mechanism in the embodiment of the present invention;

[0039] Fig.13 It is a schematic diagram of the cooperation between the first core-pulling slider and the second core-pulling slider in an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1-volute, 2-driving mechanism, 3-first core-pulling slider, 4-second core-pulling slider, 5-fixed mold, 6-movable mold, 7-limiting block, 8-limiter, 9-guide strip, 11-undercut, 31-first slider body, 32-stopper, 33-stop part, 34-inclined guide rail, 41-second slider body, 42-guide groove, 43-first limiting structure, 44-stop structure, 45-first guide structure, 46-inclined guide groove, 47-third limiting structure, 51-second limiting structure, 61-limiting member, 62-second guide structure. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] A coordinate system XYZ is provided in the drawings of the embodiments of the present invention, wherein the positive direction of the X-axis represents the right, the reverse direction of the X-axis represents the left, the positive direction of the Z-axis represents the top, the reverse direction of the Z-axis represents the bottom, the positive direction of the Y-axis represents the back, and the reverse direction of the Y-axis represents the front. The directions or positional relationships indicated by the terms "up", "down", "front", "back", "left" and "right" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0046] like Figure 1 As shown, the volute 1 of the duct machine is a cavity structure, and an undercut 11 is arranged inside the volute. Figure 2 and 3 As shown, the upper surface of the undercut 11 is in an arc shape. When the arc structure of the upper surface of the undercut 11 is used to pull the core using the second core-pulling slider 4, the second core-pulling slider 4 needs to move upward first to avoid interference of the upper surface of the undercut 11 with the second core-pulling slider 4.

[0047] One embodiment of the present invention provides a core pulling mechanism, such as Figures 1 to 9As shown, it includes a driving mechanism 2, a limiting member 61, a first core-pulling slider 3 and a second core-pulling slider 4; the driving mechanism 2 is connected to the first core-pulling slider 3, and the driving mechanism 2 is used to drive the first core-pulling slider 3 to move along the first core-pulling direction; the first core-pulling slider 3 is connected to the second core-pulling slider 4 in a sliding manner along a first straight line direction; the limiting member 61 is used to guide the second core-pulling slider 4 to move along the second core-pulling direction; the first straight line direction is inclined relative to the first core-pulling direction and the second core-pulling direction, respectively; the first core-pulling slider 3 includes a first slider body 31 and a stop member 32, and the stop member 32 is connected to the first slider body 31; the second core-pulling slider 4 includes a second slider body 41 and a stop structure 44, and the stop structure 44 is connected to the second slider body 41; the stop member 32 is limitedly matched with the stop structure 44.

[0048] It should be noted that the driving mechanism 2 is installed on the movable mold 6, and the driving mechanism 2 is tilted along the first core pulling direction. The driving mechanism 2 can be a cylinder or other mechanism that can realize linear motion. The driving mechanism 2 is used to drive the first core pulling slider 3 to reciprocate linearly along the first core pulling direction. The first core pulling direction is tilted to the lower right; the first linear direction is tilted to the lower right, and the first linear direction is tilted relative to the first core pulling direction. Here, the second core pulling direction is set along the Z-axis direction. The limiter 61 is set on the movable mold 6, such as Figure 8 and Fig. 9 As shown, the stopper 61 is used to limit the second core-pulling slider 4 from moving in the positive direction of the X-axis, and the second core-pulling slider 4 can slide along the second core-pulling direction relative to the stopper 61. The stopper structure 44 can be a separate part or a structure integrally connected to the second slider body 41; the stopper 32 can be a separate part or a structure integrally connected to the first slider body 31.

[0049] When the undercut 11 is being pulled, the driving mechanism 2 drives the first core-pulling slider 3 to move to the lower right along the first core-pulling direction, so that the first core-pulling slider 3 can pull the core in the first core-pulling direction. Since the first core-pulling slider 3 is slidably connected to the second core-pulling slider 4, the first core-pulling slider 3 slides relative to the second core-pulling slider 4 along the first straight line direction, and the first core-pulling slider 3 drives the second core-pulling slider 4 to move. Due to the action of the limiting member 61, the second core-pulling slider 4 slides relative to the limiting member 61 along the second core-pulling direction, so that the second core-pulling slider 4 can pull the core in the second core-pulling direction. Fig.10 and 11As shown, when the second core-pulling slider 4 slides along the limit piece 61 until it is separated from the limit piece 61, the stop structure 44 cooperates with the stop piece 32, and the stop piece 32 moves with the first slider body 31, pulling the stop structure 44, so that the first core-pulling slider 3 pulls the second core-pulling slider 4 to move along the first core-pulling direction, thereby realizing the movement of the first core-pulling slider 3 in the first core-pulling direction.

[0050] The advantage of such a configuration is that the first core-pulling slider 3 is driven by the driving mechanism 2 to perform the first core-pulling direction, and the first core-pulling slider 3 is slidably connected to the second core-pulling slider 4. When the first core-pulling slider 3 drives the second core-pulling slider 4 to move, under the action of the limiting member 61 and the second core-pulling slider 4, the second core-pulling slider 4 is performed along the second core-pulling direction for the second time. Due to the mutual cooperation between the stop structure 44 and the stop member 32, when the second core-pulling slider 4 is separated from the limiting member 61, the first core-pulling slider 3 drives the second core-pulling slider 4 to perform the third core-pulling along the first core-pulling direction. Three core-pulling can be achieved by setting two core-pulling sliders, which saves relatively more space.

[0051] In one embodiment of the present invention, Figure 8 and 9 As shown, the core-pulling mechanism further includes an elastic member 10 , and two ends of the elastic member 10 are respectively connected to the first core-pulling slider 3 and the second core-pulling slider 4 .

[0052] It should be noted that when the first core-pulling slider 3 moves along the first core-pulling direction, the second core-pulling slider 4 moves along the second core-pulling direction. At this time, the first core-pulling slider 3 moves relative to the second core-pulling slider 4 along the first straight line direction. Here, the first straight line direction is the relative movement direction of the first core-pulling slider 3 and the second core-pulling slider 4. Figure 8 As shown, when the first core-pulling slider 3 moves to the lower right and the second core-pulling slider 4 moves in the positive direction of the Z axis, the first core-pulling slider 3 and the second core-pulling slider 4 move away from each other. At this time, the elastic member 10 extends, and when the stop member 32 and the stop structure 44 interact with each other, the elastic member 10 cooperates with the stop member 32 and the stop structure 44 to jointly realize the first core-pulling slider 3 pulling the second core-pulling slider 4 to move.

[0053] In one embodiment of the present invention, the elastic member 10 is a spring, and the two ends of the spring are respectively connected to the first core-pulling slider 3 and the second core-pulling slider 4. Preferably, the spring can be a compression spring, that is, in the mold closing state, the spring is in a compressed state. It should be noted that when the stopper 32 interacts with the stop structure 44, the spring is in a stretched state. The advantage of such a setting is that the compression spring can push the second core-pulling slider 4 away from the limiter 61, thereby reducing the friction between the second core-pulling slider 4 and the limiter 61, so that the second core-pulling slider 4 moves more smoothly along the second core-pulling direction. When the mold is closed, the compression spring can also push the second core-pulling slider to move, avoid interference between the second core-pulling slider 4 and the limiter 61, and facilitate mold closing.

[0054] In one embodiment of the present invention, Fig.12 and Fig.13 As shown, the first core-pulling slider 3 is provided with an inclined guide rail 34, and the second core-pulling slider 4 is provided with an inclined guide groove 46; the inclined guide rail 34 and the inclined guide groove 46 are connected in a sliding manner along the first straight line direction. Here, the inclined guide rail 34 can be a T-shaped guide rail, and the inclined guide groove 46 can be a T-shaped groove. The T-shaped guide rail and the T-shaped groove cooperate with each other. On the one hand, the T-shaped guide rail can slide along the T-shaped groove, and on the other hand, the T-shaped guide rail and the T-shaped groove can limit each other to achieve the conversion of oblique force. In one embodiment of the present invention, the first core-pulling slider 3 is provided with an inclined guide groove 46, and the second core-pulling slider 4 is provided with an inclined guide rail 34.

[0055] The advantage of such a configuration is that, through the configuration of the inclined guide rail 34 and the inclined guide groove 46, a sliding connection between the first core-pulling slider 3 and the second core-pulling slider 4 is achieved, which on the one hand realizes the relative sliding of the first core-pulling slider 3 and the second core-pulling slider 4, and on the other hand realizes the conversion of oblique force, so that the movement of the first core-pulling slider 3 along the first core-pulling direction is converted into the movement of the second core-pulling slider 4 along the second core-pulling direction.

[0056] In one embodiment of the present invention, Figures 10 to 12 As shown, the second core-pulling slider 4 further includes a first limiting structure 43 , which is connected to the second slider body 41 , and the first limiting structure 43 is slidably connected to the limiting member 61 along the second core-pulling direction.

[0057] It should be noted that the first limiting structure 43 can be a separate part or a structure integrally connected to the second slider body 41. In the mold closing state, a guide structure can be provided on the limiting member 61 near one end of the second core-pulling slider 4; the guide structure can be a groove-shaped structure, the first limiting structure 43 can be a guide rail, and the groove-shaped structure cooperates with the guide rail; the guide structure can be a guide surface structure, the first limiting structure 43 can also be a guide surface structure, and the guide structure fits with the guide surface structure of the first limiting structure 43. Here, through the provision of the first limiting structure 43, the sliding connection between the second core-pulling slider 4 and the limiting member 61 is realized, and the sliding of the second core-pulling slider 4 is guided.

[0058] In one embodiment of the present invention, a third limiting structure 47 is provided at one end of the second slider body 41 away from the first limiting structure 43, and the third limiting structure 47 is slidably connected to the movable mold 6. The direction of the sliding connection between the third limiting structure 47 and the movable mold 6 is the same as the second core-pulling direction. When the second core-pulling slider 4 is molded, the second core-pulling slider 4 moves relative to the movable mold 6 along the second core-pulling direction to guide the second core-pulling slider 4. The third limiting structure 47 can be a separate part or a structure integrally connected to the movable mold 6.

[0059] In one embodiment of the present invention, Figure 6 and Figure 7 As shown, a guide groove 42 is provided on the second sliding block body 41 , and the stopper 32 is slidably connected to the guide groove 42 .

[0060] It should be noted that the guide groove 42 is used to guide the stopper 32. The guide groove 42 is arranged along the second straight line direction, that is, the length direction of the guide groove 42 is the same as the direction in which the first core-pulling slider 3 slides relative to the second core-pulling slider 4. The stopper structure 44 is located at one end of the guide groove 42 close to the first core-pulling slider 3 in the length direction. When the stopper 32 moves along the guide groove 42 to one end of the guide groove 42 close to the first core-pulling slider 3 in the length direction, the stopper 32 acts on the stopper structure 44. Therefore, by setting the guide groove 42, the movement of the stopper 32 is guided to prevent the stopper 32 and the stopper structure 44 from being offset.

[0061] In one embodiment of the present invention, Figure 8As shown, the core pulling mechanism also includes a fixed mold 5, and a second limiting structure 51 is arranged on the fixed mold 5. The first core pulling slider 3 also includes a stopper 33, and the stopper 33 is connected to the first slider body 31, and the second limiting structure 51 cooperates with the stopper 33 to stop.

[0062] It should be noted that the stopper 33 can be a separate part or a structure integrally connected to the first slider body 31. The second limiting structure 51 can be a separate part or a structure integrally connected to the fixed mold 5. When the movable mold 6 and the fixed mold 5 are closed, the stopper 33 is located in the cavity surrounded by the movable mold 6 and the fixed mold 5, and the second limiting structure 51 cooperates with the stopper 33 to prevent the driving mechanism 2 from driving the first core-pulling slider 3 to move before the mold is opened.

[0063] In one embodiment of the present invention, Fig.12 As shown, the core-pulling mechanism further includes a movable mold 6 and a guide strip 9, wherein the guide strip 9 is connected to the movable mold 6, and the guide strip 9 is used to limit the movement of the first core-pulling slider 3 along the first core-pulling direction.

[0064] It should be noted that the guide strip 9 is located above the first core-pulling slider 3 and is used to limit the displacement of the first core-pulling slider 3 in the Z-axis direction. The first core-pulling slider 3 can move along the guide strip 9 in the first core-pulling direction. By setting the guide strip 9, the movement of the first core-pulling slider 3 in the first core-pulling direction is guided.

[0065] In one embodiment of the present invention, Fig.12 As shown, the second core-pulling slider 4 further includes a first guide structure 45 , and the movable mold 6 is provided with a second guide structure 62 , and the first guide structure 45 is slidably connected with the second guide structure 62 along the first core-pulling direction.

[0066] It should be noted that the first guide structure 45 can be a separate part or a structure integrally connected to the second slider body 41. The second guide structure 62 can be a separate part or a structure integrally connected to the movable mold 6. The first guide structure 45 can be a groove-shaped structure, and the second guide structure 62 can be a guide rail, and the groove-shaped structure cooperates with the guide rail; the first guide structure 45 can be a guide surface structure, and the second guide structure 62 can also be a guide surface structure, and the guide surface structures of the first guide structure 45 and the second guide structure 62 fit together.

[0067] The advantage of this arrangement is that, through the arrangement of the second guide structure 62 , on the one hand, it provides support for the second core-pulling slider 4 , and on the other hand, it cooperates with the first guide structure 45 on the second core-pulling slider 4 to guide the movement of the second core-pulling slider 4 .

[0068] In one embodiment of the present invention, Fig.12 As shown, the core pulling mechanism further includes a limiter 8 and a limit block 7. The limit block 7 is connected to the first core pulling slider 3. The limiter 8 is arranged on the movable mold 6. The limiter 8 cooperates with the limit block 7 in limiting manner.

[0069] It should be noted that the limiter 8 can be a limit structure or a photoelectric sensor. The limit block 7 is an L-shaped structure. There are two limiters 8, one of which is used to cooperate with the limit block 7 to limit the position of the first core-pulling slider 3 in the mold opening state, and one of which is used to cooperate with the limit block 7 to limit the position of the first core-pulling slider 3 in the mold closing state to avoid the first core-pulling slider 3 colliding with other structures on the injection mold and causing damage to the mold.

[0070] The embodiment of the present invention further provides an injection mold, comprising any of the core pulling mechanisms described above. The beneficial effects of the injection mold are the same as those of the core pulling mechanisms described above, which will not be described in detail here.

[0071] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A core pulling mechanism, characterized in that: It comprises a driving mechanism (2), a limiting member (61), a first core-pulling slider (3) and a second core-pulling slider (4); the driving mechanism (2) is connected to the first core-pulling slider (3) by driving, and the driving mechanism (2) is used to drive the first core-pulling slider (3) to move along a first core-pulling direction; the first core-pulling slider (3) is connected to the second core-pulling slider (4) by sliding along a first straight line direction; the limiting member (61) is used to guide the second core-pulling slider (4) to move along a second core-pulling direction; the first straight line direction is inclined relative to the first core-pulling direction and the second core-pulling direction respectively; The first core-pulling slider (3) includes a first slider body (31) and a stopper (32), and the stopper (32) is connected to the first slider body (31); the second core-pulling slider (4) includes a second slider body (41) and a stopper structure (44), and the stopper structure (44) is connected to the second slider body (41); the stopper (32) and the stopper structure (44) are limited in cooperation; the second core-pulling slider (4) also includes a first limiting structure (43), and the first limiting structure (43) is connected to the second slider body (41), and the first limiting structure (43) is slidably connected to the limiting member (61) along the second core-pulling direction; a guide groove (42) is provided on the second slider body (41), and the stopper (32) is slidably connected to the guide groove (42).

2. The core pulling mechanism according to claim 1, characterized in that: The first core-pulling slider (3) is provided with an inclined guide rail (34), and the second core-pulling slider (4) is provided with an inclined guide groove (46); or the first core-pulling slider (3) is provided with an inclined guide groove (46), and the second core-pulling slider (4) is provided with an inclined guide rail (34); the inclined guide rail (34) and the inclined guide groove (46) are slidably connected along a first straight line direction.

3. The core pulling mechanism according to claim 1, characterized in that: It also comprises an elastic member (10), the two ends of which are respectively connected to the first core-pulling slider (3) and the second core-pulling slider (4).

4. The core pulling mechanism according to claim 3, characterized in that: The elastic member (10) is a compression spring.

5. The core pulling mechanism according to claim 1, characterized in that: The invention also comprises a fixed mold (5), on which a second limiting structure (51) is arranged, and the first core-pulling slider (3) also comprises a stopper (33), the stopper (33) is connected to the first slider body (31), and the second limiting structure (51) cooperates with the stopper (33) in a stop manner.

6. The core pulling mechanism according to claim 1, characterized in that: It also includes a movable mold (6) and a guide strip (9), wherein the guide strip (9) is connected to the movable mold (6), and the guide strip (9) is used to limit the movement of the first core-pulling slider (3) along the first core-pulling direction.

7. The core pulling mechanism according to claim 6, characterized in that: The second core-pulling slider (4) further comprises a first guide structure (45), the movable mold (6) is provided with a second guide structure (62), and the first guide structure (45) and the second guide structure (62) are slidably connected along the first core-pulling direction.

8. The core pulling mechanism according to claim 6, characterized in that: It also includes a limiter (8) and a limit block (7), wherein the limit block (7) is connected to the first core-pulling slider (3), the limiter (8) is arranged on the movable mold (6), and the limiter (8) and the limit block (7) are limited and matched.

9. An injection mold, characterized in that: It comprises a core pulling mechanism as described in any one of claims 1-8.

Images