Sprue breaking structure and injection mold

Abstract

The sprue breaking structure comprises a runner, the runner is located in an insert and communicated with a forming cavity through a port, and a clamping groove is formed in the periphery of the runner in the insert so that a sprue in the runner can form a buckle at the clamping groove. The insert is matched with the buckle through the clamping groove to limit the pouring gate so as to separate a product from the pouring gate; according to the mold, the clamping groove is formed, rubber materials can flow into the clamping groove and form the buckle protruding out of the pouring gate in the process of entering the forming cavity through the runner, and when a product is ejected out in the demolding process, due to the fact that the buckle is limited by the insert, the pouring gate does not move synchronously with the product at the beginning of ejection; according to the automatic sprue cutting device, sprue cutting and separating are completed at a port through parting force of moving of the movable mold, automatic sprue cutting is achieved, and therefore the problems of sprue residues, poor product appearance and the like are effectively solved, the step that in a traditional method, a sprue needs to be manually removed is avoided, the product appearance requirement is effectively met, and meanwhile the sprue cutting and injection molding production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely relates to a broken runner structure and injection mold. BACKGROUND

[0002] At present, the market requires the mold industry automation more and more, and cost control is more and more strict, leading to some common glue feeding styles (such as horn glue feeding, side glue feeding+in-mold cutting) of plastic mold industry cannot meet the special product demand.

[0003] Using horn glue feeding, because the appearance requirement of product is very high, through CAE mold flow analysis, it is found that there is local jet mark on the product at the glue feeding place, which cannot be eliminated, and there is runner residue and assembly interference at the glue feeding position; in the case of using side glue feeding plus in-mold cutting, the product can meet the needs of customers in appearance requirement, but the mold cost is increased a lot, and the mold also needs to be regularly maintained in the production process, which is not conducive to long-term production.

[0004] Therefore, the prior art needs to be further improved. UTILITY MODEL CONTENT

[0005] In view of the defects of the prior art, a broken runner structure and injection mold are provided to solve the appearance defect and runner residue in the common glue feeding style of the prior art plastic mold.

[0006] To achieve the above purpose, the utility model provides the following technology to achieve:

[0007] A broken runner structure, comprising a flow channel, the flow channel is located in an insert and is communicated with a forming cavity through a port, a clamping groove is arranged on the side of the flow channel in the insert to facilitate the formation of a buckle of the runner in the flow channel at the clamping groove, and when the product is ejected, the insert limits the runner through the cooperation of the clamping groove and the buckle to facilitate the separation of the product and the runner.

[0008] Further, the insert comprises a first insert and a second insert connected with the first insert, the flow channel is located between the first insert and the second insert, and when the second insert moves relative to the first insert, a shearing force is generated at the port to cut the product and the runner.

[0009] Further, the flow channel comprises an outlet flow channel, the outlet flow channel is communicated with the forming cavity through the port, the port is located at the top end of the outlet flow channel and is arranged on the second insert, and the cross-sectional dimension of the port is smaller than that of the outlet flow channel.

[0010] Further, the first insert is provided with a mounting groove to form a fixed mating surface, the second insert is connected with the first insert through a movable mating surface matched with the fixed mating surface, the flow channel is located between the fixed mating surface and the movable mating surface, and the clamping groove is arranged on the fixed mating surface.

[0011] Further, the fixed mating surface comprises a first fixed mating surface, the movable mating surface comprises a first movable mating surface, the discharge flow channel is located between the first fixed mating surface and the first movable mating surface, and the first movable mating surface is provided with a first flow channel groove accommodating the discharge flow channel.

[0012] Further, the first flow channel groove is provided with a guide surface close to one side of the port, the guide surface is arranged obliquely, the guide surface extends to the surface of the second insert and connects the edge of the port, so that the cross section of the sprue gradually decreases along the flowing direction of the rubber in the discharge flow channel, thereby facilitating the cutting of the sprue from the port.

[0013] Further, the flow channel further comprises an inlet flow channel and a connecting flow channel, two ends of the connecting flow channel are communicated with the bottom end of the inlet flow channel and the discharge flow channel respectively, and the connecting flow channel is located at the bottom of the second insert to facilitate the separation of the sprue in the flow channel from the second insert when the product is ejected.

[0014] Further, the fixed mating surface further comprises a second fixed mating surface, the movable mating surface further comprises a second movable mating surface, the connecting flow channel is located between the second fixed mating surface and the second movable mating surface, and the second movable mating surface is provided with a second flow channel groove accommodating the connecting flow channel.

[0015] Further, the second movable mating surface is located at the bottom of the second insert and connected with the first movable mating surface, and the second flow channel groove is arranged at the connection between the second movable mating surface and the first movable mating surface to facilitate the communication of the first flow channel groove.

[0016] Further, the fixed mating surface further comprises a third fixed mating surface, the movable mating surface further comprises a third movable mating surface, the inlet flow channel is located between the third fixed mating surface and the third movable mating surface, and the third movable mating surface is provided with a third flow channel groove accommodating the inlet flow channel.

[0017] Further, the third movable mating surface is located at the side surface of the second insert and connected with the first movable mating surface, and the third flow channel groove is arranged at the connection between the third movable mating surface and the first movable mating surface to facilitate the communication of the second flow channel groove.

[0018] Further, the clamping groove is arranged on the first fixed mating surface, the clamping groove is arranged opposite to the first flow channel groove to facilitate the rubber to enter the clamping groove to form a clamping structure on the sprue when flowing in the flow channel, and the clamping groove is arranged along the extension direction of the discharge flow channel.

[0019] Further, the surface of the first insert is provided with an inlet slot communicating with the third runner slot, the inlet slot extending to the outside of the first insert so as to form an external runner in the inlet slot, and a first ejector pin is arranged below the external runner.

[0020] Further, a second ejector pin is arranged below the connecting runner, the second ejector pin penetrating through the first insert and extending to the bottom end of the connecting runner, and the second ejector pin slides relative to the first insert to eject the gate in the runner.

[0021] Further, a third ejector pin for ejecting the product is further slidably connected to the first insert, and an inclined rod for driving the second insert to move relative to the first insert is arranged below the second insert, the inclined rod drives the second insert to move in an inclined direction to generate a shearing force with the first insert to facilitate cutting off the gate.

[0022] An injection mold comprising the gate cutting-off structure according to any one of the preceding embodiments.

[0023] Compared with the prior art, the comprehensive effects brought by the present application include:

[0024] The present application sets the clamping slot on the side of the runner in the insert, and the clamping slot can be filled with the rubber material and form a clamping buckle protruding from the gate during the process of the rubber material entering the forming cavity through the runner. The clamping buckle and the insert form a clamping structure, and when the product is ejected during demolding, the gate does not move synchronously with the product at the initial ejection because the clamping buckle is limited by the insert. The gate and the product complete the shearing separation of the gate at the port by using the parting force of the moving mold, realize automatic gate cutting-off, effectively solve the problems of gate residue and product appearance defects, avoid the step of manually removing the gate in the traditional method, effectively ensure the appearance requirements of the product, and improve the gate cutting-off and injection molding production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an exploded structure schematic view of the gate cutting-off structure according to the embodiment of the present application from view angle 1.

[0026] Figure 2 It is a partial structure schematic view. Figure 1

[0027] Figure 3 It is an exploded structure schematic view of the gate cutting-off structure according to the embodiment of the present application from view angle 2.

[0028] Figure 4 It is a partial structure schematic view. Figure 3

[0029] Figure 5 It is a structure schematic view of the second insert according to the embodiment of the present application.

[0030] ​​Figure 6 As the utility model break off the gate structure assembly structure schematic diagram;

[0031] Figure 7 As Figure 6 The middle part structure schematic diagram;

[0032] Figure 8 As the utility model break off the gate structure and product assembly structure schematic diagram;

[0033] Figure 9 As the utility model break off the gate structure and product assembly explosion structure schematic diagram;

[0034] Figure 10 As Figure 9 The middle part structure schematic diagram;

[0035] Figure 11 As the utility model embodiment installs in the structure schematic diagram in movable mould kernel;

[0036] Figure 12 As the utility model embodiment inserts and flow channel structure section view schematic diagram.

[0037] Legend: 1, port; 2, clamping groove; 3, flow channel; 4, buckle; 5, product; 6, first insert; 7, second insert; 8, discharge flow channel; 9, first fixed mating surface; 10, first movable mating surface; 11, first flow channel groove; 12, guide surface; 13, feeding flow channel; 14, connecting flow channel; 15, second fixed mating surface; 16, second movable mating surface; 17, second flow channel groove; 18, third fixed mating surface; 19, third movable mating surface; 20 third flow channel groove; 21, feeding groove; 22, external flow channel; 23, first thimble; 24, second thimble; 25, third thimble; 26, inclined rod; 27, thimble plate; 28, movable mould kernel; 29, inclined top slide. Specific implementation

[0038] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the utility model.

[0039] In this article, such as "first" and "second" and other relational terms appear only to distinguish one entity or operation from another entity or operation, does not necessarily require or imply any such actual relationship or order between the entity or operation. The terms "up", "down", "left", "right", "top", etc. indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0040] As shown in Figures 1 to 12 A gate breaking structure, comprising a runner 3, the runner 3 is located in the insert and communicates with the forming cavity through the port 1, the insert is provided with a clamping groove 2 on the side of the runner 3 to facilitate the gate in the runner 3 to form a buckle 4 at the clamping groove 2, when the product 5 is ejected, the insert is limited to the gate through the cooperation of the clamping groove 2 and the buckle 4 to facilitate the separation of the product 5 and the gate.

[0041] By setting the clamping groove 2 on the side of the runner 3 in the insert, the rubber material can flow into the clamping groove 2 and form a buckle 4 protruding from the gate during the process of entering the forming cavity through the runner 3, the buckle 4 and the insert form a clamping structure, when the product 5 is ejected during demolding, since the buckle 4 is limited by the insert, the gate does not move synchronously with the product 5 at the beginning of ejection, and the two complete the gate shearing separation at the port 1 by using the parting force of the moving mold, realizing automatic gate breaking, thereby effectively solving the problems of gate residue and product 5 appearance defect, avoiding the step of manually removing the gate in the traditional method, effectively ensuring the appearance requirement of the product 5 while improving the gate breaking and injection molding production efficiency.

[0042] In addition, compared with the gate breaking mechanism in the prior art, the above structure is simple in structure and solves the problems of high mold development cost and long maintenance time in the commonly used rubber injection style of plastic mold.

[0043] In the gate breaking structure of the embodiment, the insert comprises a first insert 6 and a second insert 7 clamped with the first insert 6, the runner 3 is located between the first insert 6 and the second insert 7, and the second insert 7 generates a shearing force at the port 1 when moving relative to the first insert 6 to cut off the product 5 and the gate.

[0044] Specifically, the first insert 6 is a gate insert, and the second insert 7 is an inclined ejector insert, the gate insert is fixedly installed on the movable mold core through fastening screws, the runner 3 is located at the clamping position of the inclined ejector insert and the gate insert, when the inclined ejector insert and the gate insert move relatively, the second insert 7 is separated from the gate in the runner 3 and a shearing force is generated between the second insert 7 and the edge of the first insert 6 to cut off the product 5 and the gate, thereby realizing gate breaking.

[0045] In the gate breaking structure of the embodiment, the flow channel 3 comprises a discharge flow channel 8, the discharge flow channel 8 is communicated with the molding cavity through a port 1, the port 1 is located at the top end of the discharge flow channel 8 and is arranged on the second insert 7, and the cross-sectional size of the port 1 is smaller than the cross-sectional size of the discharge flow channel 8.

[0046] The discharge flow channel 8 is communicated with the molding cavity through the port 1, so that the rubber material can enter the molding cavity from the flow channel 3, the cross section of the port 1 is small, the size of the connection between the product 5 and the gate is reduced to facilitate the cutting by the shearing force, and the size of the fracture on the product 5 is reduced to improve the aesthetic effect.

[0047] Specifically, the port 1 is arranged on the second insert 7, that is, the gate insert, and the port 1 is a rectangular groove arranged on the joint between the inclined top insert and the gate insert, and the above arrangement ensures the integrity of the edge of the gate insert, so that the shearing force is generated between the gate and the edge of the gate insert when the inclined top insert moves to cut off the rubber material at the port 1.

[0048] In the gate breaking structure of the embodiment, the first insert 6 is provided with a mounting groove to form a fixed fitting surface, the second insert 7 is matched with the first insert 6 through a movable fitting surface matched with the fixed fitting surface, the flow channel 3 is located between the fixed fitting surface and the movable fitting surface, and the clamping groove 2 is arranged on the fixed fitting surface.

[0049] Specifically, the fixed fitting surface and the movable fitting surface are attached to enclose the flow channel 3 to ensure the sealing of the flow channel 3, the clamping groove 2 is arranged on the fixed fitting surface, when the product 5 is ejected, the inclined top insert drives the movable fitting surface to move relative to the gate insert, the gate is limited by the gate insert through the buckling 4 matched with the clamping groove 2, the movable fitting surface is separated from the gate in the flow channel 3 and generates shearing force with the edge of the gate insert through the port 1 to cut off the product 5 and the gate.

[0050] In the gate breaking structure of the embodiment, the fixed fitting surface comprises a first fixed fitting surface 9, the movable fitting surface comprises a first movable fitting surface 10, the discharge flow channel 8 is located between the first fixed fitting surface 9 and the first movable fitting surface 10, and the first movable fitting surface 10 is provided with a first flow channel groove 11 accommodating the discharge flow channel 8.

[0051] Specifically, the discharge flow channel 8 is vertically arranged, the first flow channel groove 11 constitutes the main body of the discharge flow channel 8, the first fixed fitting surface 9 is a plane to close the opening of the first flow channel groove 11 to ensure the integrity of the discharge flow channel 8, through the above arrangement, the second insert 7 is separated from the gate in the flow channel 3, and the subsequent relative movement of the gate and the first insert 6 is facilitated to realize the ejection of the gate.

[0052] The first runner groove 11 is provided with a guide surface 12 on the side close to the port 1, and the guide surface 12 is inclinedly arranged, and the guide surface 12 extends to the surface of the second insert 7 and connects the edge of the port 1, so that the cross section of the runner gradually decreases along the flow direction of the rubber in the discharge runner 8, thereby facilitating the cutting of the runner at the port 1.

[0053] Through the above arrangement, the guide surface 12 is inclinedly arranged, so that the cross section of the discharge runner 8 becomes smaller and smaller along the direction close to the port 1, so that the end of the runner has an approximately conical structure, the thickness of the connection between the runner and the product 5 is reduced, the shearing at the port 1 is facilitated, the cutting efficiency of the runner is improved, and the surface flatness of the product 5 is improved.

[0054] Specifically, the arrangement of the guide surface 12 makes the edge of the port 1 provided by the second insert 7 form a sharp edge, so that the shearing force is formed when the second insert 7 moves relative to the first insert 6 to cut off the rubber in the port 1 to achieve the runner cutting.

[0055] In the runner cutting structure of the embodiment, the runner 3 further comprises a feeding runner 13 and a connecting runner 14, the two ends of the connecting runner 14 are respectively communicated with the feeding runner 13 and the bottom end of the discharge runner 8, and the connecting runner 14 is located at the bottom of the second insert 7, so that the runner in the runner 3 is separated from the second insert 7 when the product 5 is ejected.

[0056] Through the above arrangement, the runner 3 has a U-shaped structure, so that the rubber can be easily added from the top end of the feeding runner 13, and then flows through the connecting runner 14 into the discharge runner 8 and enters the molding cavity through the port 1 to form the product 5, the connecting runner 14 is located at the bottom of the second insert 7, and the mounting groove surface on the first insert 6 acts as the bottom surface, so that the second insert 7 can be separated from the runner in the runner 3 when the second insert 7 moves, and the runner can be easily ejected.

[0057] In the runner cutting structure of the embodiment, the fixed fitting surface further comprises a second fixed fitting surface 15, the movable fitting surface further comprises a second movable fitting surface 16, the connecting runner 14 is located between the second fixed fitting surface 15 and the second movable fitting surface 16, and the second movable fitting surface 16 is provided with a second runner groove 17 for accommodating the connecting runner 14.

[0058] Specifically, the second runner groove 17 is provided in the second movable fitting surface 16 as the main body of the connecting runner 14, and the second fixed fitting surface 15 is a plane which is attached to the second movable fitting surface 16 to form the connecting runner 14, so as to ensure the sealing property of the connecting runner 14.

[0059] The second movable matching surface 16 is located at the bottom of the second insert 7 and is connected with the first movable matching surface 10, and the second flow channel groove 17 is arranged at the connection of the second movable matching surface 16 and the first movable matching surface 10 to facilitate the communication of the first flow channel groove 11.

[0060] Specifically, the first movable matching surface 10 is vertically arranged, the second movable matching surface 16 is horizontally arranged, and the second flow channel groove 17 is arranged at the intersection of the two movable matching surfaces, so that it can be communicated with the first flow channel groove 11 on the first movable matching surface 10, and at the same time, the second flow channel groove 17 is facilitated to be combined with the included angle between the first fixed matching surface 9 and the second fixed matching surface 15 to jointly form the connecting flow channel 14.

[0061] Through the above arrangement, the second insert 7 is facilitated to be separated from the gate in the flow channel 3 when moving, and then the relative movement of the second insert 7 and the gate cuts off the connection between the gate and the product 5 through the port 1.

[0062] In the gate cutting structure of the embodiment, the fixed matching surface further comprises a third fixed matching surface 18, the movable matching surface further comprises a third movable matching surface 19, the feeding flow channel 13 is located between the third fixed matching surface 18 and the third movable matching surface 19, and the third movable matching surface 19 is provided with a third flow channel groove 20 accommodating the feeding flow channel 13.

[0063] Specifically, the third flow channel groove 20 arranged on the second insert 7 is the main body of the feeding flow channel 13, the third fixed matching surface 18 is a plane, and the third flow channel groove 20 cooperates with the third fixed matching surface 18 to form the feeding flow channel 13, so as to ensure the sealing property of the feeding flow channel 13 and realize the smooth feeding of the rubber into the flow channel 3.

[0064] In the gate cutting structure of the embodiment, the third movable matching surface 19 is located at the side of the second insert 7 and is connected with the first movable matching surface 10, and the third flow channel groove 20 is arranged at the connection of the third movable matching surface 19 and the first movable matching surface 10 to facilitate the communication of the second flow channel groove 17.

[0065] Specifically, the third movable matching surface 19 is vertically arranged, the left side thereof intersects with the first movable matching surface 10, and the bottom thereof intersects with the second movable matching surface 16, the third flow channel groove 20 is arranged at the intersection of the third movable matching surface 19 and the first movable matching surface 10 to facilitate the communication of the second flow channel groove 17 at the bottom of the first movable matching surface 10, and correspondingly, an included angle is arranged between the third fixed matching surface 18 and the first fixed matching surface 9, and the included angle serves as the side of the feeding flow channel 13 to close the opening of the third flow channel groove 20.

[0066] The snap slot 2 is arranged on the first fixed matching surface 10, and the snap slot 2 is arranged opposite to the first runner slot 11 to facilitate the glue to flow into the snap slot 2 to form the buckle 4 structure on the gate when the glue flows in the runner 3. The snap slot 2 is arranged along the extension direction of the discharging runner 8.

[0067] Through the above arrangement, the closed surface of the first fixed matching surface 10 to the first runner slot 11 is a plane, which facilitates the arrangement of the snap slot 2. The buckle 4 has a certain limiting effect on the gate, so that the second insert 7 can relatively move with the gate to realize separation and generate a shearing force to cut off the glue at the port 1. Meanwhile, in the continuous ejection process, the buckle 4 can slide out of the snap slot 2 to realize the ejection of the gate, thereby avoiding the buckle 4 from being stuck with the first insert 6.

[0068] In the gate breaking structure, the surface of the first insert 6 is provided with a feeding slot 21 communicating with a third runner slot 20, the feeding slot 21 extends to the outside of the first insert 6 to facilitate the glue to form an external runner 22 in the feeding slot 21, and the lower portion of the external runner 22 is provided with a first ejector pin 23.

[0069] The external runner 22 is specifically a gate in the mold part outside the insert, and the first ejector pin 23 is arranged to facilitate pushing the external runner 22 to separate from the feeding slot 21, so as to eject the external runner 22 and the gate as a whole.

[0070] In the gate breaking structure, the lower portion of the connecting runner 14 is provided with a second ejector pin 24, the second ejector pin 24 penetrates through the first insert 6 and extends to the bottom end of the connecting runner 14, and the second ejector pin 24 relatively slides with the first insert 6 to eject the gate in the runner 3.

[0071] Specifically, the second ejector pin 24 and the first ejector pin 23 are both vertically arranged and are driven to move along the vertical direction by the ejector pin plate 27 to push the gate in the insert to realize ejection.

[0072] In the gate breaking structure, the first insert 6 is further slidably connected with a third ejector pin 25 for ejecting the product 5, the lower portion of the second insert 7 is provided with a slope rod 26 for driving the second insert 7 to relatively move with the first insert 6, and the slope rod 26 drives the second insert 7 to move along the inclined direction to generate a shearing force with the first insert 6 to facilitate cutting off the gate.

[0073] The third ejector pin 25 penetrates through the first insert 6 and is flush with the upper surface of the first insert 6, the third ejector pin 25 is also driven to move by the ejector pin plate 27 to relatively slide with the first insert 6 to push the product 5 in the molding cavity above the first insert 6 to move to realize demolding and ejection of the product 5; the slope rod 26 corresponds to the slope ejector insert, the slope rod 26 drives the slope ejector insert to relatively move with the first insert 6 to generate a shearing effect to realize breaking of the gate.

[0074] Specifically, the three ejector pins and the inclined rod 26 are respectively penetrated through the movable die core 28 and are in sliding connection with the movable die core 28, the bottom end of the inclined rod 26 is in sliding connection in the inclined ejector slide 29, the inclined ejector slide 29 is fixed on the ejector pin plate 27 and is driven to move through the ejector pin plate 27, when the ejector pin plate 27 rises, the bottom end of the inclined rod 26 slides in the inclined ejector slide 29 and the whole is in relative sliding with the movable die core 28 to drive the inclined ejector insert to move and cut off the gate.

[0075] On the other hand, the application also proposes an injection mold comprising the gate cutting structure of any of the above embodiments, it can be expected that the injection mold in the application comprises all the beneficial effects of the gate cutting structure in the above embodiments, which will not be described here.

[0076] In the utility model, unless another definite provision and limitation, the terms "mount", "set", "connect", "fix", "rotate" and so on should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integral; can be mechanical connection, also can be electric connection; can be direct connection, also can through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for the ordinary skill in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0077] Although the embodiments of the utility model have been shown and described in detail, those skilled in the art can understand that various changes, modifications, replacements and deformations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A break-off gate structure, characterized by, The runner is located in the insert and communicates with the molding cavity through the port, and the insert is provided with a clamping groove on the side of the runner to facilitate the formation of a clamping structure on the gate at the clamping groove; when the product is ejected, the insert limits the gate through the cooperation of the clamping groove and the clamping structure to facilitate the separation of the product and the gate.

2. A gate break structure according to claim 1, wherein The insert comprises a first insert and a second insert clamped with the first insert, and the runner is located between the first insert and the second insert; when the second insert moves relative to the first insert, a shearing force is generated at the port to cut off the product and the gate.

3. A parting gate structure according to claim 2, wherein The runner comprises an outlet runner, and the outlet runner communicates with the molding cavity through the port; the port is located at the top end of the outlet runner and is formed on the second insert; the cross-sectional size of the port is smaller than that of the outlet runner.

4. A gate break structure according to claim 3, wherein The first insert is provided with a mounting groove to form a fixed fitting surface, and the second insert is clamped with the first insert through a movable fitting surface matched with the fixed fitting surface; the runner is located between the fixed fitting surface and the movable fitting surface; and the clamping groove is formed on the fixed fitting surface.

5. A parting gate structure according to claim 4, wherein The fixed fitting surface comprises a first fixed fitting surface, and the movable fitting surface comprises a first movable fitting surface; the outlet runner is located between the first fixed fitting surface and the first movable fitting surface; and the first movable fitting surface is provided with a first runner groove for accommodating the outlet runner.

6. A gate break structure according to claim 5, wherein The first runner groove is provided with a guide surface on the side close to the port; the guide surface is inclined; the guide surface extends to the surface of the second insert and connects the edge of the port; and the cross-sectional size of the gate gradually decreases along the flow direction of the rubber in the outlet runner, thereby facilitating the cutting of the gate at the port.

7. A parting gate structure according to claim 5, wherein The runner further comprises an inlet runner and a connecting runner; the two ends of the connecting runner respectively communicate with the bottom end of the inlet runner and the outlet runner; and the connecting runner is located at the bottom of the second insert to facilitate the separation of the gate in the runner and the second insert when the product is ejected.

8. A parting structure according to claim 7, wherein The fixed fitting surface further comprises a second fixed fitting surface, and the movable fitting surface further comprises a second movable fitting surface; the connecting runner is located between the second fixed fitting surface and the second movable fitting surface; and the second movable fitting surface is provided with a second runner groove for accommodating the connecting runner.

9. A parting structure according to claim 8, wherein The second movable fitting surface is located at the bottom of the second insert and is connected with the first movable fitting surface; and the second runner groove is formed at the connection between the second movable fitting surface and the first movable fitting surface to communicate with the first runner groove.

10. The parting gate structure of claim 8, wherein The fixed fitting surface further comprises a third fixed fitting surface, and the movable fitting surface further comprises a third movable fitting surface; the inlet runner is located between the third fixed fitting surface and the third movable fitting surface; and the third movable fitting surface is provided with a third runner groove for accommodating the inlet runner.

11. A parting structure according to claim 10, wherein The third movable fitting surface is located at the side of the second insert and is connected with the first movable fitting surface; and the third runner groove is formed at the connection between the third movable fitting surface and the first movable fitting surface to communicate with the second runner groove.

12. A gate break structure according to claim 5, wherein The clamping groove is formed on the first fixed fitting surface; the clamping groove is arranged opposite to the first runner groove to facilitate the formation of a clamping structure on the gate when the rubber flows in the runner; and the clamping groove is arranged along the extension direction of the outlet runner.

13. The parting structure of claim 10, wherein The surface of the first insert is provided with a feeding slot communicating with the third runner groove, the feeding slot extending to the outside of the first insert to facilitate the formation of an external runner in the feeding slot, and a first ejector pin is arranged below the external runner.

14. The gate break structure of claim 7, wherein A second ejector pin is arranged below the connecting runner, the second ejector pin penetrating through the first insert and extending to the bottom end of the connecting runner, and the second ejector pin slides relative to the first insert to eject the gate in the runner.

15. The parting structure of claim 2, wherein A third ejector pin for ejecting the product is also slidably connected to the first insert, and an inclined rod for driving the second insert to move relative to the first insert is arranged below the second insert, the inclined rod driving the second insert to move in an inclined direction to generate a shearing force with the first insert to facilitate the cutting of the gate.

16. An injection mold characterized in that, A gate cutting structure comprising any one of claims 1-15.

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