Cutting mechanism and die

Abstract

The utility model relates to the technical field of mold machining, in particular to a material cutting mechanism and a mold, and the material cutting mechanism comprises a pulling piece arranged on the side, close to a male mold, of a female mold; the cutter assembly is arranged on the side, close to the female mold, of the male mold, the cutter assembly and the pulling piece are oppositely arranged, the cutter assembly comprises a cutter seat and a cutter, the cutter seat slides in the first direction perpendicular to the mold closing direction of the male mold and the female mold, and the cutter is arranged on one side of the cutter seat and corresponds to a material head in a sprue of the male mold; and the swing part is rotationally arranged in the male die, the swing part is provided with a first end and a second end which are opposite to each other, the first end is movably arranged in the cutter seat, and the second end is movably clamped on the pulling part. The material cutting mechanism can automatically cut off the material head in the pouring gate of the male mold during mold opening, the cutter can cut off the material head without waiting for a signal given by a machine table, the efficiency is high, the material cutting mechanism is simple, the oil leakage condition is avoided, and the appearance quality of a formed product can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mold processing, in particular to a cutting mechanism and a mold. BACKGROUND

[0002] At present, in the automatic injection molding production process, after the traditional injection molding product is completed, the male mold and the female mold will be separated, but the material head in the gate will be adhered to the product and cannot be automatically separated, at this time, the material head needs to be manually trimmed.

[0003] In order to facilitate the trimming of the material head, an oil cylinder and a cutter are usually arranged at the position corresponding to the gate of the male mold, when the male mold and the female mold are opened, the oil cylinder is supplied with oil to push the cutter to move towards the gate, so as to cut off the material head in the gate. However, this kind of material cutting method is easy to leak oil, and the oil stain is not easy to clean, thereby polluting the appearance of the molded product; and the cutter needs to wait for the signal of the machine before cutting, which takes a long time. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, it is necessary to provide a cutting mechanism and a mold to automatically cut off the material head in the gate of the male mold when the male mold and the female mold are opened, which is more efficient.

[0005] The embodiment of the present application provides a cutting mechanism for cutting off the material head in the mold, the mold comprising a male mold and a female mold matched with each other, comprising:

[0006] A pulling member is arranged on one side of the female mold close to the male mold;

[0007] A cutter assembly is arranged on one side of the male mold close to the female mold, the cutter assembly is arranged opposite to the pulling member, the cutter assembly comprises a cutter seat and a cutter, the cutter seat slides along a first direction perpendicular to the closing direction of the male mold and the female mold, the cutter is arranged on one side of the cutter seat and corresponds to the material head in the gate of the male mold;

[0008] A swing member is rotatably arranged in the male mold, the swing member has opposite first and second ends, the first end is movably arranged in the cutter seat, and the second end is movably clamped to the pulling member;

[0009] The pulling member rotates to abut against the second end when the male mold and the female mold are opened, so that the first end abuts against the cutter seat to drive the cutter to move towards the gate of the male mold along the first direction, thereby cutting off the material head in the gate of the male mold.

[0010] In some embodiments, a side surface of the pulling member is provided with a bayonet, and the second end of the swing member is provided with a clamping part, which can be clamped in the bayonet.

[0011] In some embodiments, the pulling member comprises a pulling body and an extension, a projection area of the extension on a plane perpendicular to a closing direction of the male mold and the female mold is less than a projection area of the pulling body on the plane perpendicular to the closing direction of the male mold and the female mold, and the bayonet is formed between a side of the extension close to the pulling body and the pulling body.

[0012] In some embodiments, the bayonet comprises a first side wall, a second side wall and a third side wall, the first side wall is arranged to face the cutter seat, the second side wall is connected between the first side wall and the third side wall, the third side wall is close to the cutter seat relative to the first side wall and the included angle between the first side wall and the third side wall is an acute angle, and the clamping portion abuts against the first side wall, the second side wall and the third side wall respectively when the male mold and the female mold are closed.

[0013] In some embodiments, the cutter seat comprises:

[0014] a cutter body, the first end is movably arranged in the cutter body;

[0015] a protruding portion arranged on one side of the cutter body along the first direction, and the cutter is arranged on a side of the protruding portion away from the cutter body.

[0016] In some embodiments, a receiving groove is arranged on a side of the cutter body close to the pulling member, the first end of the swing member is movably arranged in the receiving groove, and a clearance groove is concavely arranged on a side surface of the swing member, the clearance groove penetrates through opposite sides of the swing member and is arranged corresponding to a slot opening of the receiving groove.

[0017] In some embodiments, the cutting mechanism further comprises:

[0018] a fixing member arranged on a side of the cutter body close to the pulling member and located in the male mold, wherein the first end of the swing member penetrates through the fixing member;

[0019] a rotating member rotatably arranged in the fixing member and penetrating through the swing member.

[0020] In some embodiments, the cutting mechanism further comprises:

[0021] a resilient member, a bearing groove is arranged on the cutter body, the bearing groove and the protruding portion are located on one side of the cutter body, one end of the resilient member bears on a groove bottom of the bearing groove, and the other end of the resilient member bears on the male mold, so that the cutter body is reset when the male mold and the female mold are opened.

[0022] In some embodiments, the protruding portion is provided with a slot away from one side of the cutter body, one end of the cutter is inserted into the slot, and the other end of the cutter extends out of the slot to cut off the sprue in the gate of the male mold.

[0023] The application also provides a mold, comprising a male mold, a female mold and the cutting mechanism as any one of the above, the pulling member of the cutting mechanism is arranged in the female mold, the cutter assembly and the swinging member of the cutting mechanism are arranged in the male mold, and the cutting mechanism is used to cut off the sprue in the gate of the male mold when the male mold and the female mold are opened.

[0024] The cutting mechanism and the mold can automatically cut off the sprue in the gate of the male mold when the male mold and the female mold are opened, the second end of the swinging member is rotated by the pulling member, the first end of the swinging member pushes the cutter seat to drive the cutter to move in the first direction towards the gate of the male mold, and thus the cutter cuts off the sprue in the gate of the male mold. In this way, the cutter does not need to wait for a signal from the machine before cutting off the sprue, the efficiency is higher, the cutting mechanism is simple, and the mold does not leak oil, thereby ensuring the appearance quality of the molded product. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a cross-sectional structure schematic diagram of the mold provided by the application when the mold is closed.

[0026] Figure 2 is Figure 1 is a three-dimensional structure schematic diagram of the cutting mechanism shown in the figure.

[0027] Figure 3 is Figure 2 is an exploded structure schematic diagram of the cutting mechanism shown in the figure.

[0028] Figure 4 is a cross-sectional structure schematic diagram of the mold provided by the application when the mold is opened.

[0029] Figure 5 is a cross-sectional structure schematic diagram of the mold provided by the application after the mold is opened. DETAILED DESCRIPTION

[0030] The embodiments of the application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the application, and cannot be understood as a limitation of the application.

[0031] In the description of the present application, it needs to be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, it needs to be explained that the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0032] In the description of the present application, it needs to be explained that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection or can communicate with each other, it can be direct connection, or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0033] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] Please refer to Figure 1 The embodiment of the present application provides a mold 100, which comprises a male mold 10, a female mold 20 and a cutting mechanism 30.

[0035] The male mold 10 comprises a male mold stem 12 and a male mold plate assembly 13, and the male mold stem 12 is arranged on one side of the male mold plate assembly 13.

[0036] The male mold 10 and the female mold 20 are matched with each other, and the female mold 20 comprises a female mold stem 21 and a female mold plate assembly 22, and the female mold stem 21 is arranged on one side of the female mold plate assembly 22.

[0037] The cutting mechanism 30 is used to cut off the sprue 11 in the male mold 10 and the material head 300 connected with the product 200 when the male mold 10 and the female mold 20 are opened.

[0038] Please refer to Figure 2 and Figure 3The cutting mechanism 30 comprises a pulling member 31, a cutting assembly 32 and a swinging member 33. The pulling member 31 is arranged on the side of the female mold 20 close to the male mold 10. The cutting assembly 32 is arranged on the side of the male mold 10 close to the female mold 20, and is arranged opposite to the pulling member 31. The cutting assembly 32 comprises a cutting seat 321 and a cutting knife 322. The cutting seat 321 slides along a first direction perpendicular to the closing direction of the male mold 10 and the female mold 20. The closing direction is the Z-axis direction, and the first direction is the X-axis direction. The cutting knife 322 is arranged on one side of the cutting seat 321 and corresponds to the material head 300 in the gate 11 of the male mold 10. The swinging member 33 is rotatably arranged in the male mold 10. The swinging member 33 has opposite first and second ends 331 and 332. The first end 331 is movably arranged in the cutting seat 321, and the second end 332 is movably clamped to the pulling member 31. When the male mold 10 and the female mold 20 are opened, the pulling member 31 rotates against the second end 332 to make the first end 331 push the cutting seat 321 to drive the cutting knife 322 to move along the first direction towards the gate 11 of the male mold 10, so that the cutting knife 322 cuts off the material head 300 in the gate 11 of the male mold 10.

[0039] In some embodiments, a side of the pulling member 31 is provided with a bayonet 311, and the second end 332 of the swinging member 33 is provided with a clamping portion 333 clamped in the bayonet 311. When the male mold 10 and the female mold 20 are closed, the clamping portion 333 is clamped in the bayonet 311. When the male mold 10 and the female mold 20 are opened, the pulling member 31 rotates against the second end 332 to make the first end 331 push the cutting seat 321 to drive the cutting knife 322 to move along the first direction towards the gate 11 of the male mold 10, so that the cutting knife 322 cuts off the material head 300 in the gate 11 of the male mold 10.

[0040] In some embodiments, the pulling member 31 comprises a pulling body 312 and an extension 313. The projection area of the extension 313 on a plane perpendicular to the closing direction of the male mold 10 and the female mold 20 is smaller than the projection area of the pulling body 312 on the plane. The bayonet 311 is formed between the extension 313 close to the pulling body 312 and the pulling body 312. By making the projection area of the extension 313 on the plane perpendicular to the closing direction of the male mold 10 and the female mold 20 smaller than the projection area of the pulling body 312 on the plane, the volume of the pulling member 31 and the swinging member 33 can be greatly reduced, so that the cutting mechanism 30 occupies less space.

[0041] In some embodiments, the bayonet 311 comprises a first side wall 314, a second side wall 315 and a third side wall 316, the first side wall 314 is arranged to face the cutter seat 321, the second side wall 315 is connected between the first side wall 314 and the third side wall 316, the third side wall 316 is arranged to be close to the cutter seat 321 relative to the first side wall 314 and the included angle between the first side wall 314 and the third side wall 316 is an acute angle, and the clamping portion 333 is arranged to abut against the first side wall 314, the second side wall 315 and the third side wall 316 respectively when the male mold 10 and the female mold 20 are closed. By arranging the clamping portion 333 to abut against the first side wall 314, the second side wall 315 and the third side wall 316 respectively when the male mold 10 and the female mold 20 are closed, the third side wall 316 can push the clamping portion 333 to move when the male mold 10 and the female mold 20 are opened, so as to rotate the swing member 33, and push the cutter seat 321 to drive the cutter 322 to move along the first direction towards the gate 11 of the male mold 10, so as to cut the sprue 300 in the gate 11 of the male mold 10.

[0042] In some embodiments, the cutter seat 321 comprises a cutter body 3211 and a protruding portion 3212, the first end 331 is movably arranged in the cutter body 3211, and the protruding portion 3212 is arranged on one side of the cutter body 3211 along the first direction, and the cutter 322 is arranged on the side of the protruding portion 3212 away from the cutter body 3211. The size of the protruding portion 3212 is smaller than the size of the cutter body 3211, so that the volume of the cutter seat 321 can be greatly reduced, and the cutting mechanism 30 occupies less space.

[0043] In some embodiments, the cutter body 3211 is arranged to have a receiving groove 3211A on the side close to the pulling member 31, the first end 331 of the swing member 33 is movably arranged in the receiving groove 3211A, and the side surface of the swing member 33 is arranged to have an avoiding groove 334 penetrating through the opposite sides of the swing member 33 and arranged to correspond to the slot of the receiving groove 3211A. By arranging the avoiding groove 334, the rotation of the swing member 33 in the receiving groove 3211A can be ensured.

[0044] In some embodiments, the cutting mechanism 30 further comprises a fixing member 34 and a rotating member 35, the fixing member 34 is block-shaped, the fixing member 34 is arranged on the side of the cutter body 3211 close to the pulling member 31 and located in the male mold 10, and the first end 331 of the swing member 33 penetrates through the fixing member 34, and the rotating member 35 is rotatably arranged in the fixing member 34 and penetrates through the swing member 33. Specifically, the rotating member 35 extends along the second direction, and the second direction is the Y-axis direction, and the rotating member 35 is a rotating shaft. By arranging the fixing member 34 and the rotating member 35, the rotation of the swing member 33 can be realized.

[0045] In some embodiments, the cutting mechanism 30 further comprises an elastic member 36, the cutting knife body 3211 is provided with a bearing groove 3211B, the bearing groove 3211B and the protruding portion 3212 are located on one side of the cutting knife body 3211, one end of the elastic member 36 bears against the groove bottom of the bearing groove 3211B, and the other end of the elastic member 36 bears against the male mold 10, so that the cutting knife body 3211 is reset when the male mold 10 and the female mold 20 are opened. Specifically, the elastic member 36 is a spring. One end of the elastic member 36 bears against the groove bottom of the bearing groove 3211B, and the other end of the elastic member 36 bears against the male mold 12.

[0046] In some embodiments, the protruding portion 3212 is provided with a slot 3212A away from one side of the cutting knife body 3211, one end of the cutting knife 322 is inserted into the slot 3212A, and the other end of the cutting knife 322 extends out of the slot 3212A to cut off the material head 300 in the gate 11 of the male mold 10. Specifically, the cutting knife 322 is connected to the protruding portion 3212 by a bolt 323. By providing the slot 3212A, the cutting knife 322 can be conveniently installed and removed.

[0047] In some embodiments, please refer to Figure 4 and Figure 5 , the cutting mechanism 30 further comprises a sliding block seat 301, a first clamping hook 302, a second clamping hook 303 and a delay block 304, the sliding block seat 301 is arranged in the male mold 10 and can slide in the first direction, the cutting knife body 3211 is fixed on the sliding block seat 301; the first clamping hook 302 is in L-shaped structure, the first clamping hook 302 is arranged on the side of the sliding block seat 301 away from the cutting knife body 3211; the second clamping hook 303 is arranged in the male mold 10 and cooperates with the first clamping hook 302, for clamping the first clamping hook 302 when the male mold 10 and the female mold 20 are closed; the delay block 304 is arranged on the side of the female mold 20 close to the male mold 10, for being inserted into the male mold 10 and bearing against the sliding block seat 301 when the male mold 10 and the female mold 20 are closed, to prevent the sliding block seat 301 from moving, at this time the second clamping hook 303 clamps the first clamping hook 302.

[0048] The implementation process of the mold 100 of the embodiments of the present application is as follows:

[0049] Please continue to refer to Figure 1 When the male mold 10 and the female mold 20 are closed, the clamping portion 333 is clamped in the clamping opening 311, the clamping portion 333 abuts against the first side wall 314, the second side wall 315 and the third side wall 316 respectively, the delay block 304 is inserted into the male mold 10 and bears against the sliding block seat 301, and the second clamping hook 303 clamps the first clamping hook 302. Please continue to refer to Figure 4When the male mold 10 and the female mold 20 are opened, the delay block 304 moves in the male mold 10 and gradually slides out of the male mold 10, the third side wall 316 of the pulling member 31 pushes the clamping portion 333 to move, so that the second end 332 of the swing member 33 rotates, the first end 331 of the swing member 33 pushes the cutter seat 321 to drive the cutter 322 to move along the first direction towards the gate 11 of the male mold 10, so that the cutter 322 cuts off the sprue 300 in the gate 11 of the male mold 10. Please continue to see Figure 5 After the male mold 10 and the female mold 20 are opened, the delay block 304 slides out of the male mold 10, under the action of the elastic member 36, the elastic member 36 can reset the cutter body 3211, and the cutter 322 is reset. At this time, the slide block seat 301 drives the cutter assembly 32 to move away from the male mold 12 to make the second clamping hook 303 and the first clamping hook 302 disengage.

[0050] The above cutting mechanism 30 and the mold 100, when the male mold 10 and the female mold 20 are opened, the pulling member 31 rotates to make the first end 331 push the cutter seat 321 to drive the cutter 322 to move along the first direction towards the gate 11 of the male mold 10, so that the cutter 322 cuts off the sprue 300 in the gate 11 of the male mold 10. In this way, the sprue 300 in the gate 11 of the male mold 10 can be automatically cut off when the mold 100 is opened, that is, the sprue 300 can be cut off when the mold 100 is opened. The cutter 322 does not need to wait for a signal from the machine before cutting off the sprue 300, which is efficient, stable and reliable. Moreover, the cutting mechanism 30 is simple and does not cause oil leakage, which can ensure the appearance quality of the molded product 200.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cutting mechanism for cutting off a slug in a die, the die comprising a male die and a female die which cooperate, characterized in that, The application relates to a cutting mechanism for a mold, which comprises the following parts: a pulling member arranged on one side of a female mold close to a male mold; a cutter assembly arranged on one side of the male mold close to the female mold, the cutter assembly being arranged opposite to the pulling member, the cutter assembly comprising a cutter seat and a cutter, the cutter seat sliding along a first direction perpendicular to the closing direction of the male mold and the female mold, the cutter being arranged on one side of the cutter seat and corresponding to the material head in the gate of the male mold; a swinging member rotatably arranged in the male mold, the swinging member having opposite first and second ends, the first end movably arranged in the cutter seat, and the second end movably clamped to the pulling member; wherein the pulling member rotates to abut against the second end when the male mold and the female mold are opened, so that the first end pushes the cutter seat to drive the cutter to move along the first direction towards the gate of the male mold, thereby cutting off the material head in the gate of the male mold.

2. The cutting mechanism of claim 1, wherein The side surface of the pulling member is provided with a bayonet, and the second end of the swinging member is provided with a clamping part which can be clamped in the bayonet.

3. The cutting mechanism of claim 2, wherein The pulling member comprises a pulling body and an extension part, the projection area of the extension part on a plane perpendicular to the closing direction of the male mold and the female mold is smaller than the projection area of the pulling body on the plane, and the bayonet is formed between one side of the extension part close to the pulling body and the pulling body.

4. The cutting mechanism of claim 2 wherein, The bayonet comprises a first side wall, a second side wall and a third side wall, the first side wall is arranged to face the cutter seat, the second side wall is connected between the first side wall and the third side wall, the third side wall is close to the cutter seat relative to the first side wall and the included angle between the first side wall and the third side wall is an acute angle, and the clamping part abuts against the first side wall, the second side wall and the third side wall respectively when the male mold and the female mold are closed.

5. The cutting mechanism of claim 1 wherein, The cutter seat comprises: a cutter body, the first end is movably arranged in the cutter body; a protruding part arranged on one side of the cutter body along the first direction, and the cutter is arranged on one side of the protruding part away from the cutter body.

6. The cutting mechanism of claim 5, wherein The side of the cutter body close to the pulling member is provided with a receiving groove, the first end of the swinging member is movably arranged in the receiving groove, and the side surface of the swinging member is concavely provided with an avoiding groove penetrating through the opposite sides of the swinging member and corresponding to the slot opening of the receiving groove.

7. The cutting mechanism of claim 5 wherein, The cutting mechanism further comprises: a fixing member arranged on one side of the cutter body close to the pulling member and located in the male mold, wherein the first end of the swinging member penetrates through the fixing member; a rotating member rotatably arranged in the fixing member and penetrating through the swinging member.

8. The cutting mechanism of claim 5 wherein, The cutting mechanism further comprises: a resilient member, a bearing groove is arranged on the cutter body, the bearing groove and the protruding part are located on one side of the cutter body, one end of the resilient member bears on the groove bottom of the bearing groove, and the other end of the resilient member bears on the male mold, so that the cutter body is reset when the male mold and the female mold are opened.

9. The cutting mechanism of claim 5 wherein, The protruding part is provided with a slot on the side away from the cutter body, one end of the cutter is inserted into the slot, and the other end of the cutter extends out of the slot to cut off the sprue head in the sprue of the male mold.

10. A mold characterized in that, The cutting mechanism comprises a male mold, a female mold and the cutting mechanism according to any one of claims 1-9, the pulling member of the cutting mechanism is arranged in the female mold, the cutter assembly and the swinging member of the cutting mechanism are arranged in the male mold, and the cutting mechanism is used for cutting off the sprue head in the sprue of the male mold when the male mold and the female mold are opened.

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