Die with stable back hole multi-bridge core head

Abstract

The utility model belongs to the technical field of dies, and discloses a back hole multi-bridge die with a stable core head, which comprises an upper die and a lower die which are detachably mounted together, a sinking part is arranged in the middle of the upper die, a plurality of fixing bridges are arranged between the sinking part and the upper die, the gap between the upper die and the sinking part is divided into a plurality of feeding holes by the fixing bridges, and the feeding holes are communicated with the lower die. A back hole is formed in the middle of the sinking part, a mold core assembly is arranged at the bottom of the sinking part, a welding chamber is arranged in the middle of the lower mold, and a cavity contour hole is formed in the middle of the welding chamber; the upper die and the sinking part are connected through a plurality of fixing bridges, stable connection of the sinking part is kept, the die core assembly is fixedly connected to the bottom of the sinking part, a lower hollow cutter support on the third die core is connected with a reinforcing rib, the fixing bridges and the sinking part, connection is stable, deformation is not prone to occurring, and a balance hole can reduce pressure borne by the third die core. Feeding materials of the feeding hole and the back hole can circulate and be mixed, and the quality of formed products is stable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field, specifically speaking, relate to a back hole multi bridge core head stable mould. BACKGROUND

[0002] Mould is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy part pressing, pressure casting, and the forming processing such as the compression molding or injection molding of engineering plastics, rubber, ceramic products, and mould is mainly made into the workpiece with specific shape and size under the action of external force.

[0003] There are many kinds of moulds, including round table mould, in the process of work, material enters from the feed port of the mould, and is formed under the extrusion of the mould, and then is discharged from the discharge port, if the core head of the mould cannot keep stable in the process of extrusion, the formed part may be deformed. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem to provide a back hole multi bridge core head stable mould, through setting up several fixed bridges, the mould core is more stable, and the part specification is stable.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0006] A back hole multi bridge core head stable mould, including the upper die and lower die that can be detachably installed together, the middle part of the upper die is provided with a sunken part, a plurality of fixed bridges are arranged between the sunken part and the upper die, the fixed bridges divide the gap between the upper die and the sunken part into a plurality of feed holes, the middle part of the sunken part is provided with a back hole, the bottom of the sunken part is provided with a mould core assembly, the middle part of the lower die is provided with a welding chamber, and the middle part of the welding chamber is provided with a cavity contour hole.

[0007] Aluminum bar enters the inside of the mould from the feed hole and the back hole, the mould core assembly and the cavity contour hole cooperate to form the shape of the product to be produced, the welding chamber is used for storing sufficient aluminum material, the aluminum material is extruded through the mould core assembly and the cavity contour hole to form the product, and the mould core assembly is extruded in the process of extrusion, and the sunken part is fixed through the plurality of fixed bridges, so that the sunken part is more stable.

[0008] The utility model further optimizes the above technical scheme as follows:

[0009] The mould core assembly includes a first mould core, a second mould core and a third mould core, the second mould core is arranged on one side of the first mould core, the first mould core and the second mould core are spaced apart by a first gap, the second mould core is provided with a first product groove on the side away from the first mould core, and the third mould core is arranged on the adjacent side of the second mould core and the first mould core close side, the third mould core and the second mould core are spaced apart by a second gap, and the third mould core is provided with a second product groove on the side away from the second mould core.

[0010] The first mold core, the second mold core and the third mold core are used for forming the cavity inside the product, the first product groove and the second product groove are the positions where the product forming grooves are formed, and the first gap and the second gap are the positions where the ribs inside the product are formed.

[0011] Further optimization: the upper side of the first product groove is provided with a feeding hole, and the bottom of the feeding hole is provided with a first flow guide groove for guiding the raw material to the first product groove; the first flow guide groove is used to guide more aluminum materials to the first product groove, because the shape of this position is irregular, and the product may not be qualified due to insufficient aluminum material flow, so the first flow guide groove is arranged at the upper part of the first product groove to strengthen the aluminum material flow at the first product groove.

[0012] Further optimization: the upper side of the second product groove is provided with a feeding hole, and the bottom of the feeding hole is provided with a second flow guide groove for guiding the raw material to the second product groove; the second flow guide groove has the same effect as the first flow guide groove, and is used to strengthen the aluminum material flow at the second product groove.

[0013] Further optimization: the upper side of the intersection of the first mold core, the second mold core and the third mold core is provided with a feeding hole, and the bottom of the feeding hole is provided with a third flow guide groove for guiding the material to the intersection of the first mold core, the second mold core and the third mold core; an X-shaped structure is formed at the intersection of the first mold core, the second mold core, the third mold core and the cavity contour hole, and the third flow guide groove is used to guide more aluminum materials to form the X-shaped structure.

[0014] Further optimization: the middle of the back hole is provided with a reinforcing bridge, the reinforcing bridge separates the back hole into a first back hole and a second back hole, and the first back hole and the second back hole penetrate above the first gap and the second gap; the outside of the sunken part will be extruded by the aluminum material, and the aluminum material flow at the first gap and the second gap is insufficient, so the first back hole and the second back hole are arranged to increase the aluminum material flow at the first gap and the second gap, and the reinforcing bridge is used to reinforce the sunken part.

[0015] Further optimization: the third mold core is provided with a balance hole, the balance hole is located at the upper side of the second product groove, and the balance hole penetrates the third mold core transversely; the balance hole is used for pressure balance of the back hole and the feeding hole, the third mold core is small in volume and is easily affected by the pressure of the aluminum material, in order to maintain the stability of the third mold core, the balance hole is arranged to reduce the pressure received by the third mold core.

[0016] Further optimization: the upper part of the third mold core is provided with a lower knife support on both sides, the upper part of the two lower knife supports is connected with a reinforcing rib, and the top of the lower knife support is connected with a fixed bridge and a sunken part; the reinforcing rib, the fixed bridge and the sunken part support the lower knife support from three directions, so that the lower knife support is more stable.

[0017] The utility model discloses the beneficial effect is: mould core subassembly and cavity contour hole cooperation form the working clearance of production product, and the upper die is connected through a plurality of fixed bridges between the subsidence part, has kept the connection stability of subsidence part, and the mould core subassembly fixed connection is in the bottom of subsidence part, and the lower empty sword support connects the reinforcing rib, fixed bridge and subsidence part on the third mould core, and the connection is stable, and it is difficult to deformation, and the balanced hole can reduce the pressure that third mould core received, and the feed hole and back hole feed can flow and mix, and the product quality that forms is stable.

[0018] The utility model is further illustrated below in connection with the drawings and examples. DRAWINGS

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the specific embodiment of the utility model;

[0020] Figure 2 It is the structure schematic diagram of the bottom of upper die in the specific embodiment of the utility model;

[0021] Figure 3 It is the plan view of upper die in the specific embodiment of the utility model;

[0022] Figure 4 It is the bottom view of upper die in the specific embodiment of the utility model;

[0023] Figure 5 It is the three-dimensional view of the bottom of upper die in the specific embodiment of the utility model;

[0024] Figure 6 It is the three-dimensional structure schematic diagram of lower die in the specific embodiment of the utility model.

[0025] In the drawing: 1-upper die;11-subsidence part;111-back hole;112-reinforcing bridge;113-first back hole;114-second back hole;115-first drainage groove;116-second drainage groove;117-third drainage groove;12-fixed bridge;13-feed hole;14-mould core subassembly;141-first mould core;142-second mould core;143-third mould core;144-first gap;145-second gap;146-first product recess;147-second product recess;148-balanced hole;149-lower empty sword support;15-reinforcing rib;2-lower die;21-welding chamber;22-cavity contour hole. PREFERRED EMBODIMENT

[0026] As Figures 1-6As shown, a back hole multi-bridge core head stable mold, comprising an upper die 1 and a lower die 2 detachably installed together, the middle part of the upper die 1 is provided with a sunken part 11, a plurality of fixed bridges 12 are arranged between the sunken part 11 and the upper die 1, the fixed bridges 12 separate the gap between the upper die 1 and the sunken part 11 into a plurality of feeding holes 13, the middle part of the sunken part 11 is provided with a back hole 111, the bottom of the sunken part 11 is provided with a mold core assembly 14, the middle part of the lower die 2 is provided with a welding chamber 21, and the middle part of the welding chamber 21 is provided with a cavity contour hole 22.

[0027] The aluminum rod enters the inside of the mold from the feeding hole 13 and the back hole 111, the mold core assembly 14 and the cavity contour hole 22 cooperate to form the shape of the product to be produced, the welding chamber 21 is used to store enough aluminum material, the aluminum material is extruded through the mold core assembly 14 and the cavity contour hole 22 to form the product, and the extrusion process will cause extrusion to the mold core assembly 14, the sunken part 11 is fixed by the plurality of fixed bridges 12, and the sunken part 11 is more stable.

[0028] The mold core assembly 14 comprises a first mold core 141, a second mold core 142 and a third mold core 143, the second mold core 142 is arranged on one side of the first mold core 141, the first mold core 141 and the second mold core 142 are spaced apart by a first gap 144, the second mold core 142 is provided with a first product groove 146 away from one side of the first mold core 141, and the third mold core 143 is arranged on the adjacent side of the second mold core 142 close to the first mold core 141, the third mold core 143 and the second mold core 142 are spaced apart by a second gap 145, and the third mold core 143 is provided with a second product groove 147 away from one side of the second mold core 142.

[0029] The first mold core 141, the second mold core 142 and the third mold core 143 are used to form the cavity inside the product, the first product groove 146 and the second product groove 147 are the positions where the product grooves are formed, and the first gap 144 and the second gap 145 form the ribs inside the product.

[0030] The upper side of the first product groove 146 is provided with a feeding hole 13, and the bottom of the feeding hole 13 is provided with a first drainage groove 115 for guiding the raw material to the first product groove 146; the first drainage groove 115 is used to guide more aluminum material to the first product groove 146, because the shape here is irregular, it is easy to cause the product to be unqualified due to insufficient aluminum material flow, so the first drainage groove 115 is arranged at the upper part of the first product groove 146 to strengthen the aluminum material flow at the first product groove 146.

[0031] The upper side of the second product groove 147 is provided with a feeding hole 13, and the bottom of the feeding hole 13 is provided with a second flow guide groove 116 for guiding the raw material to the second product groove 147; the second flow guide groove 116 has the same effect as the first flow guide groove 115, and is used to strengthen the flow of aluminum materials at the second product groove 147.

[0032] The upper side of the intersection of the first mold core 141, the second mold core 142 and the third mold core 143 is provided with a feeding hole 13, and the bottom of the feeding hole 13 is provided with a third flow guide groove 117 for guiding the material to the intersection of the first mold core 141, the second mold core 142 and the third mold core 143; the intersection of the first mold core 141, the second mold core 142, the third mold core 143 and the cavity profile hole 22 forms an X-shaped structure, and the third flow guide groove 117 is used to guide more aluminum materials to form an X-shaped structure.

[0033] The reinforcing bridge 112 is arranged in the middle of the back hole 111, and the reinforcing bridge 112 divides the back hole 111 into a first back hole 113 and a second back hole 114, and the first back hole 113 and the second back hole 114 penetrate to above the first gap 144 and the second gap 145; the outside of the sunken part 11 is extruded by the aluminum materials, and the flow of the aluminum materials at the first gap 144 and the second gap 145 is insufficient, so the first back hole 113 and the second back hole 114 are arranged to increase the flow of the aluminum materials at the first gap 144 and the second gap 145, and the reinforcing bridge 112 is used to reinforce the sunken part 11.

[0034] The third mold core 143 is provided with a balance hole 148, and the balance hole 148 is located on the upper side of the second product groove 147 and transversely penetrates the third mold core 143; the balance hole 148 is used to balance the pressure balance of the back hole 111 and the feeding hole 13, the third mold core 143 has a small volume and is easily affected by the pressure of the aluminum materials, and the balance hole 148 is arranged to maintain the stability of the third mold core 143 and reduce the pressure received by the third mold core 143.

[0035] The lower air knife supports 149 are arranged on both sides of the upper part of the third mold core 143, the upper parts of the two lower air knife supports 149 are connected with the reinforcing ribs 15, and the top of the lower air knife support 149 is connected with the fixed bridge 12 and the sunken part 11; the reinforcing ribs 15, the fixed bridge 12 and the sunken part 11 support the lower air knife support 149 from three directions, so that the lower air knife support 149 is more stable.

[0036] In the working process, the heated aluminum rod enters the mold from the feeding hole and the back hole 111, the aluminum rod is re-welded in the welding chamber 21, the aluminum materials in the welding chamber 21 mainly pass through the gap between the outside of the mold core assembly 14 and the cavity profile hole 22 to form the outer wall of the product, and the feeding at the back hole 111 is mainly used to pass through between the first gap 144 and the second gap 145 to form the middle rib of the product.

[0037] The feeding amount at the feeding port and the back hole 111 is different, when the pressure difference is generated between the outer side and the inner side, the aluminum material can enter the low pressure side through the gap between the mold core assembly 14 and the equalizing hole 148, and the pressure of the inner side and the outer side of the mold core assembly 14 is balanced.

[0038] At the same time, the equalizing hole 148 can also reduce the pressure received by the third mold core 143, the third mold core 143 has a small volume and a small connection area with the sinking part 11, and deformation occurs when it bears the extrusion force, causing the product to be unqualified. By setting the equalizing hole 148, the aluminum material inside and outside the third mold core 143 can circulate, reducing the pressure received by the third mold core 143 and avoiding its deformation.

[0039] The third mold core 143 is connected to the sinking part 11 through two lower knife supports 149, a reinforcing rib 15 is arranged between the two lower knife supports 149 to enhance the stability of the lower knife support 149, and the upper part of the third mold core 143 is provided with a feeding hole 13. The fixed bridge 12 on both sides of the feeding hole 13 is connected to the two lower knife supports 149 respectively, and the bottom of the sinking part 11, the reinforcing rib 15 and the fixed bridge 12 are radially supported in three directions of the lower knife support 149, so that the third mold core 143 is more stable.

[0040] After the upper mold 1 and the lower mold 2 are fixedly connected, the first mold core 141, the second mold core 142 and the third mold core 143 are inserted into the cavity contour hole 22, the gap between the mold core assembly 14 and the cavity contour hole 22 forms the shape of the product, the feeding hole 13 feeds the aluminum material corresponding to the outer side of the mold core assembly 14 and the inner side of the cavity contour hole 22, the first back hole 113 feeds the aluminum material corresponding to the first gap 144, and the second back hole 114 feeds the aluminum material corresponding to the second gap 145, so that the aluminum material can stably and continuously enter the gap for forming the product.

[0041] For those skilled in the art, according to the teaching of the present application, the changes, modifications, replacements and variations made to the embodiments without departing from the principles and spirits of the present application still fall within the protection scope of the present application.

Claims

1. A mold for a back-pit multi-bridge core head stabilization, comprising an upper mold (1) and a lower mold (2) detachably mounted together, characterized in that: The middle part of the upper die (1) is provided with a sunken part (11), a plurality of fixed bridges (12) are arranged between the sunken part (11) and the upper die (1), the fixed bridges (12) separate the gap between the upper die (1) and the sunken part (11) into a plurality of feeding holes (13), the middle part of the sunken part (11) is provided with a back hole (111), the bottom of the sunken part (11) is provided with a mold core assembly (14), the middle part of the lower die (2) is provided with a welding chamber (21), and the middle part of the welding chamber (21) is provided with a cavity contour hole (22).

2. A back hole multi-bridge core head stabilizing mold according to claim 1, characterized in that: The mold core assembly (14) comprises a first mold core (141), a second mold core (142) and a third mold core (143), the second mold core (142) is arranged on one side of the first mold core (141), the first mold core (141) and the second mold core (142) are spaced apart by a first gap (144), the first product groove (146) is arranged on the side away from the first mold core (141) of the second mold core (142), and the third mold core (143) is arranged on the adjacent side of the second mold core (142) close to the first mold core (141). The third mold core (143) and the second mold core (142) are spaced apart by a second gap (145), and the second product groove (147) is arranged on the side away from the second mold core (142) of the third mold core (143).

3. A back hole multi-bridge core head stabilizing mold according to claim 2, characterized in that: The upper side of the first product groove (146) is provided with a feeding hole (13), and the bottom of the feeding hole (13) is provided with a first flow guide groove (115) for guiding the raw materials to the first product groove (146).

4. The multi-bridge core back hole stable mold according to claim 2, wherein: The upper side of the second product groove (147) is provided with a feeding hole (13), and the bottom of the feeding hole (13) is provided with a second flow guide groove (116) for guiding the raw materials to the second product groove (147).

5. A back hole multi-bridge core head stabilizing mold according to claim 2, characterized in that: The upper side of the intersection of the first mold core (141), the second mold core (142) and the third mold core (143) is provided with a feeding hole (13), and the bottom of the feeding hole (13) is provided with a third flow guide groove (117) for guiding the material to the intersection of the first mold core (141), the second mold core (142) and the third mold core (143).

6. A back-punched multi-bridge core head stabilizing die according to claim 5, characterized in that: The middle part of the back hole (111) is provided with a reinforcing bridge (112), the reinforcing bridge (112) separates the back hole (111) into a first back hole (113) and a second back hole (114), and the first back hole (113) and the second back hole (114) penetrate above the first gap (144) and the second gap (145).

7. A back-punched multi-bridge core head stabilizing die according to claim 6, characterized in that: The third mold core (143) is provided with an equalizing hole (148), the equalizing hole (148) is located on the upper side of the second product groove (147), and the equalizing hole (148) transversely penetrates the third mold core (143).

8. A back-punched multi-bridge core head stabilizing die according to claim 7, characterized in that: The upper part of the third mold core (143) is provided with a lower empty knife support (149) on both sides, the upper part of the two lower empty knife supports (149) is connected with a reinforcing rib (15), and the top of the lower empty knife support (149) is connected with the fixed bridge (12) and the sunken part (11).

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