A core pulling mechanism and injection mold

Abstract

The present invention provides a core pulling mechanism and an injection mold, and relates to the field of mold technology. The core pulling mechanism of the present invention includes a driving device, a slanted top and a core pulling assembly; the driving device is used to drive the slanted top to move along a first straight line direction; the core pulling assembly includes a first elastic member and a core pulling rod, the first elastic member is connected to the slanted top and the core pulling rod respectively, and the core pulling rod is slidably connected to the slanted top along a second straight line direction; when the mold is closed, the first elastic member is in a compressed state, and the telescopic direction of the first elastic member is the same as the second straight line direction. Therefore, by arranging the core pulling assembly on the slanted top, the core pulling of a specific direction of the product structure is realized. Through the cooperation of the compression elastic member and the core pulling rod, the core pulling rod can be pushed out by the compression elastic member during the mold opening process to realize the core pulling movement of the core pulling rod. At the same time, when the compression elastic member fails to demold the core pulling rod, the movement of the core pulling rod driven by the slanted top can be offset to avoid damaging the product or the mold core.

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] In injection molded products, a second inclined guide hole is usually set on the movable mold. The movement of the movable mold is converted into the core-pulling movement of the inclined ejector through the cooperation of the inclined guide rod and the second inclined guide hole. However, the core-pulling inclined ejector can usually only move in one direction, and the core-pulling direction is relatively single. For complex structures, it cannot meet actual needs. Summary of the invention

[0003] The problem solved by the invention is the problem of single core pulling direction of the core pulling inclined top.

[0004] In order to solve the above problems, the present invention provides a core pulling mechanism, including a driving device, a tilted top and a core pulling assembly; the driving device is used to drive the tilted top to move along a first straight line direction; the core pulling assembly includes a first elastic member and a core pulling rod, the first elastic member is respectively connected to the tilted top and the core pulling rod, and the core pulling rod is slidably connected to the tilted top along a second straight line direction; when the mold is closed, the first elastic member is in a compressed state, and the telescopic direction of the first elastic member is the same as the second straight line direction.

[0005] Therefore, by arranging the core pulling assembly on the inclined top, the core pulling in a specific direction of the product structure is realized. Through the cooperation between the compression elastic member and the core pulling rod, the core pulling rod can be pushed out by the compression elastic member during the mold opening process to realize the core pulling movement of the core pulling rod. At the same time, when the compression elastic member fails to demold the core pulling rod, the movement of the core pulling rod driven by the inclined top can be offset to avoid damaging the product or the mold core.

[0006] Optionally, it also includes a movable mold and an inclined guide rod, the movable mold is provided with a second inclined guide hole, the inclined guide rod is slidingly connected to the second inclined guide hole along the first straight line direction, the axial ends of the inclined guide rod are respectively connected to the inclined top and the driving device, and the driving device is used to drive the inclined guide rod to move along the first straight line direction.

[0007] Therefore, the movement of the oblique guide rod is guided by the provision of the second oblique guide hole.

[0008] Optionally, the driving device includes a driving member and a mounting plate, a sliding groove is arranged on the mounting plate, and the inclined guide rod is slidingly connected to the sliding groove along a third straight line direction near one end of the mounting plate, and the driving member is used to drive the mounting plate to move along a fourth straight line direction, and the first straight line direction is inclined relative to the third straight line direction and the fourth straight line direction, respectively.

[0009] Therefore, by arranging the slide groove on the mounting plate and cooperating with the oblique guide rod, the movement of the mounting plate along the fourth straight line direction is converted into the movement of the oblique guide rod along the first straight line direction.

[0010] Optionally, the driving device further comprises a universal seat, the universal seat is slidably connected to the slide groove along a third straight line direction, and one end of the inclined guide rod close to the mounting plate is rotatably connected to the universal seat.

[0011] Therefore, by connecting the inclined guide rod with the universal seat, on the one hand, it is possible to avoid the inclined guide rod from directly contacting the slide groove and causing damage to the inclined guide rod. On the other hand, through the setting of the universal seat, it is possible to avoid the inclined guide rod from twisting when sliding along the slide groove.

[0012] Optionally, a first inclined guide hole is provided in the inclined top, the core pulling rod is at least partially accommodated in the first inclined guide hole, the core pulling rod is slidably connected to the first inclined guide hole along a second straight line direction, and the second straight line direction is set at an angle to the first straight line direction.

[0013] Therefore, through the setting of the first inclined guide hole, the core pulling rod is cooperated to guide the movement of the core pulling rod on the one hand, and provide an oblique force to the core pulling rod on the other hand, so as to convert the movement of the inclined top into the core pulling movement of the core pulling rod. When the core pulling rod fails to be demolded during the mold opening process, the core pulling rod is demolded again.

[0014] Optionally, the core pulling rod comprises a core pulling rod body and a mold core; one end of the core pulling rod body is connected to the first elastic member, and the other end is provided with the mold core; the core pulling direction of the mold core is set at an angle to the second straight line direction.

[0015] Therefore, by setting the core pulling direction of the mold core and the inclined setting of the core pulling rod, it is convenient to demould the mold core in multiple directions.

[0016] Optionally, a push rod is further included, a first guide hole is arranged in the inclined top, the push rod is slidably connected to the first guide hole along a fifth straight line direction, and the fifth straight line direction is inclined relative to the first straight line direction.

[0017] Therefore, when the driving device 4 drives the inclined ejector to eject the product, the product is ejected in the fifth straight line direction through the cooperation between the push rod and the guide groove.

[0018] Optionally, it also includes a second elastic member, which is in a compressed state and is used to push the push rod toward the movable mold; a guide groove is provided on the movable mold, and when the mold is in the closed state, one end of the push rod close to the movable mold is accommodated in the guide groove.

[0019] Therefore, by setting the compression elastic member, the push rod is pushed to contact the movable mold, so that the push rod can return to the guide groove during the mold closing process.

[0020] Optionally, a receiving groove is formed on the inclined top, the receiving groove is arranged on the side wall of the first guide hole, and the second elastic member is received in the receiving groove.

[0021] Thus, the second elastic member is protected by the provision of the accommodating groove. Meanwhile, the accommodating groove is provided on the side wall of the first guide hole, which makes full use of the space and reduces the volume of the inclined roof.

[0022] Optionally, it also includes a guide rod, which is vertically arranged, and both ends of the guide rod are respectively connected to the inclined top and the driving device, and a second guide hole is arranged on the movable mold, and the guide rod is slidably connected to the second guide hole.

[0023] Therefore, when the inclined ejector ejects the product, the force on the inclined guide rod can be reduced through the contact between the guide rod and the inclined ejector.

[0024] Optionally, a circulating water circuit is provided in the inclined roof, and the circulating water circuit is used for cooling the inclined roof.

[0025] Therefore, by setting the circulating water circuit, cooling water is introduced into the circulating water circuit to achieve cooling of the inclined roof.

[0026] Optionally, it also includes at least two water joints, the inclined guide rod is a hollow rod, the inclined guide rod is connected to the circulating water circuit, and there are two inclined guide rods; the end of the inclined guide rod away from the inclined top is connected to the water joint.

[0027] Therefore, by arranging the inclined guide rod to be hollow and connecting the hollow rod with the circulating water circuit, cooling of the moving parts of the entire core-pulling mechanism is achieved.

[0028] Another aspect of the present invention provides an injection mold, the injection mold comprising any one of the core pulling mechanisms described above. The beneficial effects of the injection mold are the same as those of the core pulling mechanism, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a product in an embodiment of the present invention;

[0030] Figure 2 For the present invention Figure 1 A local enlarged view of point I in FIG.

[0031] Figure 3It is a structural schematic diagram of the injection mold in the embodiment of the present invention in the mold closing state;

[0032] Figure 4 It is a structural schematic diagram of the injection mold in the embodiment of the present invention in the mold opening state;

[0033] Figure 5 It is a structural schematic diagram of the injection mold in the ejection state in an embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of a driving device in an embodiment of the present invention;

[0035] Figure 7 An exploded view of the core pulling mechanism in an embodiment of the present invention;

[0036] Figure 8 is a schematic diagram of an ejection mechanism in an embodiment of the present invention;

[0037] Fig. 9 is a cross-sectional view of the ejection mechanism at the core pulling rod in an embodiment of the present invention;

[0038] Fig.10 Schematic diagram of the structure of the mold core in an embodiment of the present invention;

[0039] Fig.11 It is a schematic diagram of the structure of the push rod before being ejected according to an embodiment of the present invention;

[0040] Fig.12 It is a schematic diagram of the structure after the push rod is ejected according to an embodiment of the present invention;

[0041] Fig.13 It is a schematic diagram of the structure of the core pulling rod after demoulding according to the embodiment of the present invention;

[0042] Fig.14 It is a schematic structural diagram of an embodiment of the present invention before the core pulling rod is pushed out of the mold.

[0043] Description of reference numerals:

[0044] 1-product, 11-card hole, 12-barb, 3-movable template, 4-driving device, 5-fixed mold core, 6-fixed mold core, 7-movable mold core, 21-oblique guide rod, 22-universal seat, 23-guide rod, 24-oblique top, 26-core pulling assembly, 31-second oblique guide hole, 41-mounting plate, 42-slide groove, 71-guide groove, 241-first guide hole, 242-accommodating groove, 243-first oblique guide hole, 251-push rod, 252-second elastic member, 253-abutment portion, 261-core pulling rod, 262-first elastic member, 263-elastic member mounting seat, 264-core pulling rod body, 265-second mold core, 266-first mold core. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0046] 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 a rotational connection; it can be a mechanical connection; it can be directly connected, or 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. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0047] In addition, all directions or positional relationships mentioned in the embodiments of the present invention are positional relationships based on the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than implying or suggesting that the device or element referred to must have a specific orientation, and cannot be understood as a limitation of the present invention. An XYZ coordinate system is provided in 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 Y-axis represents the front, the reverse direction of the Y-axis represents the rear, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom, wherein "front", "back", "left", "right", "upper" and "lower" do not constitute a limitation on the specific structure, but are only based on the position in the accompanying drawings. "First", "second", "third", "fourth" and "fifth" in the text are only for the convenience of distinguishing descriptions and do not constitute a limitation on specific quantities.

[0048] like Figure 1 As shown, for the molding of the upper structure of the middle frame, a core-pulling insert can be set on the inclined top 24, and there can be multiple core-pulling inserts, and different core-pulling inserts are used for molding different structures on the middle frame. Figure 2 As shown, a clamping hole 11 is provided on the side of the middle frame, and a barb 12 is provided on the side wall of the clamping hole 11. The best embodiment of the present invention is carried out for core pulling of the clamping hole 11 and the barb 12.

[0049] like Figure 3 As shown, Figure 3 It is a structural schematic diagram of the injection mold in the mold closing state in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of the injection mold in the mold opening state in an embodiment of the present invention; Figure 5The figure is a schematic diagram of the structure of the product being ejected in the embodiment of the present invention. The movable mold mentioned in the text refers to the movable mold plate 3 and the movable mold core 7, but if there is no contradiction, the movable mold can also refer to the movable mold plate 3 or the movable mold core 7; the fixed mold refers to the fixed mold plate 6 and the fixed mold core 5, but if there is no contradiction, the fixed mold can also refer to the fixed mold plate 6 or the fixed mold core 5.

[0050] Combination Fig. 9 As shown, an embodiment of the present invention provides a core pulling mechanism, including a driving device 4, a tilted top 24 and a core pulling assembly 26; the driving device 4 is used to drive the tilted top 24 to move along a first straight line direction; the core pulling assembly 26 includes a first elastic member 262 and a core pulling rod 261, the first elastic member 262 is respectively connected to the tilted top 24 and the core pulling rod 261, the core pulling rod 261 is slidably connected to the tilted top 24 along a second straight line direction; when in the mold closing state, the first elastic member 262 is in a compressed state, and the telescopic direction of the first elastic member 262 is the same as the second straight line direction.

[0051] It should be noted that the driving device 4 can be a cylinder driving device or a push rod driving device. The driving device 4 can be directly connected to the inclined top 24 or connected to the inclined top 24 through other conversion structures. The driving device 4 drives the conversion structure to move and converts the movement of the conversion structure into the movement of the inclined top 24. Here, the first straight line direction and the second straight line direction are just for the convenience of description. The core pulling rod 261 can be provided with a core or an insert, and the first elastic member 262 can be a spring or other elastic material. In this embodiment, taking the spring as an example, when the mold is closed, the spring is in a compressed state, and the spring pushes the core puller 261 to contact the fixed mold. The drive device 4 is connected to the movable mold. When the mold is opened, the drive device 4 moves in the opposite direction along the Y axis with the movable mold. At the same time, the fixed mold releases the restriction on the core puller 261. At this time, there are two possible situations. The first situation: the core puller 261 is successfully demolded under the thrust of the spring. After the mold is opened, the drive device 4 drives the inclined ejector 24 to perform an ejection movement along the first straight line direction, and the core puller 261 moves together with the inclined ejector 24. The second situation: if Fig.14 As shown, the core pulling rod 261 fails to be demolded under the thrust of the spring. After the mold is opened, since the spring is in a compressed state, when the driving device 4 drives the inclined ejector 24 to perform an ejection movement along the first straight line direction, the spring stretches to offset the force of the inclined ejector 24 and avoid damaging the product or the mold core.

[0052] The advantage of such a configuration is that, by arranging the core pulling assembly 26 on the inclined top, the core pulling in a specific direction of the product structure is realized. By the cooperation between the compression elastic member and the core pulling rod 261, during the mold opening process, the core pulling rod 261 can be pushed out by the compression elastic member to realize the core pulling movement of the core pulling rod 261. At the same time, when the compression elastic member fails to demold the core pulling rod 261, the movement of the core pulling rod 261 driven by the inclined top 24 can be offset to avoid damaging the product or the mold core.

[0053] like Figures 3 to 8 As shown, the core pulling mechanism also includes a movable mold and an inclined guide rod 21, the movable mold is provided with a second inclined guide hole 31, the inclined guide rod 21 is slidably connected with the second inclined guide hole 31 along the first straight line direction, and the axial ends of the inclined guide rod 21 are respectively connected with the inclined top 24 and the driving device 4, and the driving device 4 is used to drive the inclined guide rod 21 to move along the first straight line direction.

[0054] It should be noted that the second oblique guide hole 31 is arranged along the first straight line direction, the oblique guide rod 21 is inserted into the second oblique guide hole 31, the second oblique guide hole 31 penetrates the movable mold, the lower end of the oblique guide rod 21 is connected to the driving device 4 below the movable mold, and the upper end of the oblique guide rod 21 is connected to the inclined top 24. Here, the driving device 4 first drives the oblique guide rod 21 to move, and since the inclined top 24 is connected to the oblique guide rod 21, the driving device drives the inclined top 24 to move. The movement of the oblique guide rod 21 is guided by the arrangement of the second oblique guide hole 31.

[0055] like Figure 6 As shown, the driving device 4 includes a driving member and a mounting plate 41, a slide groove 42 is arranged on the mounting plate 41, and the inclined guide rod 21 is slidingly connected with the slide groove 42 along a third straight line direction at one end close to the mounting plate 41, and the driving member is used to drive the mounting plate 41 to move along a fourth straight line direction, and the first straight line direction is inclined relative to the third straight line direction and the fourth straight line direction, respectively.

[0056] It should be noted that if Figure 5As shown, the slide groove 42 is arranged along the third linear direction (X-axis direction), the driving device 4 is arranged below the movable mold, and the driving member drives the mounting plate 41 to move along the Y-axis direction. When the driving device 4 drives the inclined ejector 24 to perform ejection movement, since the first linear direction is inclined relative to the fourth linear direction, at this time, the slide groove 42 is arranged on the mounting plate 41, so that the end of the inclined guide rod 21 close to the mounting plate 41 can slide in the slide groove 42. When the driving device 4 drives the inclined ejector 24 to perform ejection movement, the driving device 4 drives the mounting plate 41 to move along the fourth linear direction (Y-axis direction). At this time, the inclined guide rod 21 moves upward along the Y-axis on the one hand, and moves along the first linear direction on the other hand. In this process, the end of the inclined guide rod 21 close to the mounting plate 41 slides in the opposite direction of the X-axis along the slide groove 42. Therefore, by providing the slide groove 42 on the mounting plate 41 and cooperating with the oblique guide rod 21 , the movement of the mounting plate 41 along the fourth straight line direction is converted into the movement of the oblique guide rod 21 along the first straight line direction.

[0057] like Figure 6 As shown, the driving device further includes a universal seat 22, and the universal seat 22 is slidably connected with the slide groove 42 along the third straight line direction, and the end of the oblique guide rod 21 close to the mounting plate 41 is rotatably connected with the universal seat 22. In this embodiment, the end of the oblique guide rod 21 close to the mounting plate 41 is not directly slidably connected with the slide groove 42, but is connected with the universal seat 22 through the oblique guide rod 21, and then slidably connected with the slide groove 42 through the universal seat 22. The advantage of such a setting is that, by connecting the oblique guide rod 21 with the universal seat 22, on the one hand, it is avoided that the oblique guide rod 21 is directly in contact with the slide groove 42 to cause damage to the oblique guide rod 21, and on the other hand, by the setting of the universal seat 22, it is possible to avoid the oblique guide rod 21 from being twisted when sliding along the slide groove 42.

[0058] like Figures 7 to 9 As shown, a first inclined guide hole 243 is provided in the inclined top 24, and the core pulling rod 261 is at least partially accommodated in the first inclined guide hole 243. The core pulling rod 261 is slidably connected to the first inclined guide hole 243 along a second straight line direction, and the second straight line direction is set at an angle to the first straight line direction.

[0059] It should be noted that the first oblique guide hole 243 is arranged along the second straight line direction, and the core pulling rod 261 is inserted into the first oblique guide hole 243. Here, an elastic member mounting seat 263 is arranged in the first oblique guide hole 243, and the two ends of the elastic member are respectively connected to the elastic member mounting seat 263 and the core pulling rod 261. In the mold closing state, the core pulling rod 261 can be completely accommodated in the first oblique guide hole 243. When the inclined ejector 24 performs ejection movement along the first straight line direction, it can drive the core pulling rod 261 to move along the first straight line direction. Under the action of the compression spring, the core pulling rod 261 extends out of the first oblique guide hole 243. During the mold opening process, when the core pulling rod 261 fails to be demolded under the thrust of the spring, after the mold is opened, the driving device 4 drives the inclined ejector 24 to perform ejection movement along the first straight line direction. At this time, the first inclined guide hole 243 can give the core pulling rod 261 an oblique force, so that the core pulling rod 261 moves along the core pulling direction, so that the core pulling rod 261 is demolded again. Fig.13 As shown, when the core pulling rod 261 is demoulded successfully, the core pulling rod 261 extends out, and the core pulling rod 261 moves together with the inclined ejector 24 .

[0060] Therefore, through the setting of the first inclined guide hole 243, in cooperation with the core pulling rod 261, on the one hand, the movement of the core pulling rod 261 is guided, and on the other hand, an oblique force is provided to the core pulling rod 261 to convert the movement of the inclined top 24 into the core pulling movement of the core pulling rod 261. When the core pulling rod 261 fails to be demolded during the mold opening process, the core pulling rod 261 is demolded again.

[0061] like Fig. 9 and Fig.10 As shown, the core pulling rod 261 includes a core pulling rod body 264 and a mold core; one end of the core pulling rod body 264 is connected to the first elastic member 262, and the other end is provided with the mold core; the core pulling direction of the mold core is set at an angle to the second straight line direction.

[0062] It should be noted that the core-pulling rod 261 includes a first mold core 266 and a second mold core 265; the core-pulling rod body 264 is used to drive the first mold core 266 to move along a first core-pulling direction. Fig.13 The second mold core 265 is arranged on the core pulling rod body 264, and the core pulling rod body 264 is also used to drive the second mold core 265 along the second core pulling direction ( Fig.13The first mold core 266 can be directly arranged on the core pulling rod body 264, or can be arranged on the core pulling rod body 264 by being arranged on the second mold core 265. Before mold opening, the first mold core 266 is located in the barb 12. During the mold opening process, when the core pulling rod 261 fails to be demolded under the thrust of the spring, after mold opening, the driving device 4 drives the inclined ejector 24 to perform ejection movement along the first linear direction. At this time, the first inclined guide hole 243 can give the core pulling rod 261 an oblique force. Since the first core pulling direction is arranged at an angle with the second linear direction, and the second core pulling direction is arranged at an angle with the second linear direction, the first mold core 266 has a movement tendency in the first core pulling direction, thereby realizing the demolding movement of the first mold core 266 in the first core pulling direction and separating from the barb 12. Since the spring is in a compressed state, when the first mold core 266 is successfully demolded in the first core pulling direction, the compression spring pushes out the core pulling rod body 264 to realize demolding of the second mold core 265 in the second core pulling direction. By setting the core pulling direction of the mold core and the inclined setting of the core pulling rod 261, it is convenient to demold the mold core in multiple directions.

[0063] like Fig.11 and Fig.12 As shown, the core pulling mechanism also includes a push rod 251, a first guide hole 241 is provided in the inclined top 24, a guide groove 71 is provided on the movable mold, and the push rod 251 is penetrated through the first guide hole 241. When the mold is in the closed state, the push rod 251 is accommodated in the guide groove 71 close to one end of the movable mold; the push rod 251 is slidably connected to the first guide hole 241 along a fifth straight line direction, and the fifth straight line direction is inclined relative to the first straight line direction.

[0064] It should be noted that, since the inclined top 24 is slidably connected with the movable mold along the first straight line direction, a guide end face matching the inclined top 24 is provided on the movable mold, and the inclined top 24 slides along the guide end face. The guide groove 71 is equivalent to being provided on the guide end face. The guide groove 71 is provided with a guide surface along the first straight line direction, and the push rod 251 is in contact with the guide surface. When the driving device 4 drives the inclined top 24 to move along the first straight line direction, the inclined top 24 drives the push rod 251 to move along the first straight line direction together. Since the push rod 251 is located in the guide groove 71, when the push rod 251 moves along the first straight line direction, the push rod 251 moves along the guide groove 71 until the push rod 251 slides out of the guide groove 71. In this process, the push rod 251 moves along the fifth straight line direction ( Fig.12The push rod 251 moves in the X-axis direction until the push rod 251 extends out of the other end of the first guide hole 241 to eject the product.

[0065] The advantage of such a configuration is that, during the process of the driving device 4 driving the inclined ejector 24 to eject, the product is ejected in the fifth straight line direction through the cooperation between the push rod 251 and the guide groove 71 .

[0066] like Fig.11 and Fig.12 As shown, the core pulling mechanism also includes a second elastic member 252, the second elastic member 252 is in a compressed state, and the second elastic member 252 is used to push the push rod 251 to approach the movable mold. It should be noted that the second elastic member 252 can be made of a spring or other elastic materials. In this embodiment, taking a compression spring as an example, an abutment portion 253 is provided on the push rod 251. In one embodiment of the present invention, one end of the compression spring contacts the abutment portion 253, and one end contacts the inclined top 24. The compression spring pushes the push rod 251 to contact the movable mold through the abutment portion 253. In one embodiment of the present invention, the two ends of the compression spring are respectively connected to the abutment portion 253 and the inclined top 24. The advantage of such a setting is that, through the setting of the compression elastic member, the push rod 251 is pushed to contact the movable mold, so that the push rod 251 can be returned to the guide groove 71 during the mold closing process.

[0067] like Fig.11 and Fig.12 As shown, the inclined top 24 is provided with a receiving groove 242, and the second elastic member 252 is received in the receiving groove 242. Taking a compression spring as an example, the compression spring is coaxial with the push rod 251, and the receiving groove 242 is provided on the side wall of the first guide hole 241. One end of the compression spring contacts the abutment portion 253, and the other end contacts the receiving groove 242. Thus, the second elastic member 252 is protected by the provision of the receiving groove 242, and at the same time, the receiving groove 242 is provided on the side wall of the first guide hole 241, which makes full use of the space and reduces the volume of the inclined top 24.

[0068] Since the inclined guide rod 21 is arranged at an angle, the inclined guide rod 21 is easily damaged by force. Figures 7 to 9As shown, the core pulling mechanism also includes a guide rod 23, which is vertically arranged, one end of which is connected to the driving device 4, and the other end is in contact with the inclined ejector 24. A second guide hole is provided on the movable mold, and the guide rod 23 is slidably connected to the second guide hole. It should be noted that the two ends of the guide rod 23 are respectively connected to the inclined ejector 24 and the mounting plate 41 of the driving device 4. When the driving member drives the mounting plate 41 to move upward along the Y axis, the movement direction of the guide rod 23 is the same as that of the mounting plate 41. Therefore, when the inclined ejector 24 ejects the product, the force on the inclined guide rod 21 can be reduced through the contact between the guide rod 23 and the inclined ejector 24.

[0069] Here, the core pulling mechanism further includes a guide block 27, which is mounted on the movable mold and has a plurality of avoidance holes, the positions of which correspond to the positions of the second oblique guide hole and the second guide hole, respectively. The radial displacement of the oblique guide rod 21 or the guide rod 23 is limited by the setting of the guide block 27.

[0070] Usually, when the inclined top 24 continuously reciprocates, the inclined top 24 is prone to heat up. Figures 7 to 9 As shown, a circulating water circuit is provided in the inclined roof 24, and the circulating water circuit is used to cool the inclined roof 24. Usually, the circulating water circuit has an outlet and an inlet, water enters from the inlet and exits from the outlet, and cooling water is passed into the circulating water circuit to achieve cooling of the inclined roof 24.

[0071] like Figures 7 to 9 As shown, the core-pulling mechanism also includes at least two water joints 28, the inclined guide rod 21 is a hollow rod, the inclined guide rod 21 is connected to the circulating water circuit, and there are two inclined guide rods 21; the end of the inclined guide rod 21 away from the inclined top 24 is connected to the water joint 28. It should be noted that the two hollow rods are respectively connected to the inlet and outlet of the circulating water circuit, wherein the two water joints 28 are respectively connected to the lower ends of the two hollow rods, one of the water joints is a water inlet, and one of the water joints is a water outlet, by introducing cooling water into the water inlet and recovering it from the water outlet. The advantage of such a setting is that by setting the inclined guide rod 21 to be hollow and connecting the hollow rod to the circulating water circuit, the cooling of the moving parts of the entire core-pulling mechanism is achieved.

[0072] Another embodiment of the present invention provides an injection mold, the injection mold comprising any one of the core pulling mechanisms described above. The beneficial effects of the injection mold are the same as those of the core pulling mechanism, which will not be described in detail here.

[0073] 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 device (4), a tilting top (24) and a core pulling assembly (26); the driving device (4) is used to drive the tilting top (24) to move along a first straight line direction; the core pulling assembly (26) comprises a first elastic member (262) and a core pulling rod (261), the first elastic member (262) is connected to the tilting top (24) and the core pulling rod (261) respectively, and the core pulling rod (261) is slidably connected to the tilting top (24) along a second straight line direction; when in a mold closing state, the first elastic member (262) is in a compressed state, and the expansion and contraction direction of the first elastic member (262) is the same as the second straight line direction; The core-pulling mechanism further comprises a movable mold and an inclined guide rod (21), the movable mold is provided with a second inclined guide hole (31), the inclined guide rod (21) and the second inclined guide hole (31) are slidably connected along the first straight line direction, the axial ends of the inclined guide rod (21) are respectively connected to the inclined top (24) and the driving device (4), and the driving device (4) is used to drive the inclined guide rod (21) to move along the first straight line direction; The inclined top (24) is provided with a first inclined guide hole (243), the core pulling rod (261) is at least partially accommodated in the first inclined guide hole (243), the core pulling rod (261) is slidably connected with the first inclined guide hole (243) along a second straight line direction, and the second straight line direction is arranged at an angle with the first straight line direction; The core pulling rod (261) comprises a core pulling rod body (264) and a mold core; one end of the core pulling rod body (264) is connected to the first elastic member (262), and the other end is provided with the mold core; the core pulling direction of the mold core is arranged at an angle to the second straight line direction.

2. The core pulling mechanism according to claim 1, characterized in that: The driving device (4) comprises a driving member and a mounting plate (41), a slide groove (42) is arranged on the mounting plate (41), one end of the inclined guide rod (21) close to the mounting plate (41) is slidably connected with the slide groove (42) along a third straight line direction, and the driving member is used to drive the mounting plate (41) to move along a fourth straight line direction, and the first straight line direction is inclined relative to the third straight line direction and the fourth straight line direction respectively.

3. The core pulling mechanism according to claim 2, characterized in that: The driving device also includes a universal seat (22), the universal seat (22) is slidably connected to the slide groove (42) along a third straight line direction, and one end of the inclined guide rod (21) close to the mounting plate (41) is rotatably connected to the universal seat (22).

4. The core pulling mechanism according to claim 1, characterized in that: It also includes a push rod (251), a first guide hole (241) is arranged in the inclined top (24), a guide groove (71) is opened on the movable mold, and the push rod (251) is inserted into the first guide hole (241); when the mold is in a closed state, the push rod (251) is accommodated in the guide groove (71) close to one end of the movable mold; the push rod (251) is slidably connected to the first guide hole (241) along a fifth straight line direction, and the fifth straight line direction is inclined relative to the first straight line direction.

5. The core pulling mechanism according to claim 4, characterized in that: It also includes a second elastic member (252), wherein the second elastic member (252) is in a compressed state, and the second elastic member (252) is used to push the push rod (251) toward the movable mold.

6. The core pulling mechanism according to claim 5, characterized in that: The inclined top (24) is provided with a receiving groove (242), the receiving groove (242) is located on the side wall of the first guide hole (241), and the second elastic member (252) is received in the receiving groove (242).

7. The core pulling mechanism according to claim 1, characterized in that: The invention also comprises a guide rod (23), wherein the guide rod (23) is vertically arranged, and the two ends of the guide rod (23) are respectively connected to the inclined top (24) and the driving device (4), and a second guide hole is arranged on the movable mold, and the guide rod (23) is slidably connected to the second guide hole.

8. The core pulling mechanism according to claim 1, characterized in that: A circulating water circuit is provided in the inclined roof (24), and the circulating water circuit is used for cooling the inclined roof (24).

9. The core pulling mechanism according to claim 8, characterized in that: It also includes at least two water joints (28), the inclined guide rod (21) is a hollow rod, the inclined guide rod (21) is connected to the circulating water circuit, and there are two inclined guide rods (21); one end of the inclined guide rod (21) away from the inclined top (24) is connected to the water joint (28).

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

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