Automatic falling-off device for mold drainage opening material

Abstract

The utility model discloses an automatic die drainage opening material falling-off device which comprises a fixed base, a plurality of oil cylinders are fixed to the upper portion of the fixed base, the upper portions of the oil cylinders extend out of the top face of the fixed base, an upper supporting block is fixed to the top face of the fixed base, and push rods of the oil cylinders are inserted into corresponding through holes in a top plate of the upper supporting block in a sleeved mode. A lower mold plate is fixed to the top face of a top plate of the upper supporting block, a lower mold core fixing plate is fixed to the top face of the lower mold plate, and a product push plate is pressed against the top face of the lower mold core fixing plate. The device can automatically cut off and separate the drainage opening material of the injection-molded sealing ring injection-molded part and automatically fall off the sealing ring injection-molded part, so that the labor amount of workers is greatly reduced, the processing efficiency is improved, the labor cost is reduced, and the device is free of weld lines and good in quality.

Description

Technical field:

[0001] The utility model relates to the technical field of injection molding equipment, and more particularly to an automatic falling-off device for mold runner material. Background technology:

[0002] Ternary polymer lithium battery refers to a lithium battery whose positive electrode material uses lithium nickel cobalt manganese oxide (Li(NiCoMn)O2) ternary positive electrode material. The ternary composite positive electrode material precursor product is made of nickel salt, cobalt salt and manganese salt as raw materials. The ratio of nickel, cobalt and manganese can be adjusted according to actual needs.

[0003] Ternary lithium batteries are characterized by high energy density, higher voltage, and greater battery capacity for the same weight. However, their weakness lies in their poor stability. If an internal short circuit occurs or the positive electrode material comes into contact with water, a fire will occur. Cylindrical ternary lithium batteries are generally protected by a steel shell and sealed with a sealing ring at the top. Although the battery pack is fully protected, there is still a fire hazard in extreme collision accidents. Because the battery pack of an electric vehicle is composed of approximately 7,000 cylindrical ternary lithium batteries, strict requirements are placed on the external dimensions of the cylindrical ternary lithium batteries.

[0004] The sealing ring is installed at the top of the cylindrical battery's steel shell. It seals the ternary polymer material and prevents environmental changes (such as water) from contaminating the battery interior and causing danger. Because the sealing ring is a critical sealing component, strict requirements are placed on its size and flexibility. The sealing ring is injection-molded using resin material using injection molding equipment and molds. The mold is manufactured with 32 cavities per mold, and 32 sealing rings are produced per mold during production. To maintain stable product quality, mass-produced products are regularly inspected and each mold of 32 sealing rings undergoes flexibility testing (impact resistance testing). The sealing ring flexibility test uses specialized equipment to perform a pressure test on the product in a specified direction. The judgment standard is that the product can deform but not break.

[0005] To save material in injection molding, existing sealing rings are molded with three gates on the inside of the product. This creates weld lines between the two gates during molding, with each sealing ring having three weld lines. Flexibility testing of sealing rings revealed that over 90% of defective products break near these weld lines. This results in low product qualification rates, a significant increase in unit costs, and a continuous decline in gross profit margins.

[0006] Therefore, top injection molding is now used to realize molding material injection. However, there will be a sprue material in the middle of the injection molding material, which needs to be removed from the sealing ring injection molding material manually later, which increases the labor cost. Utility model content:

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a device for automatically removing sprue material from a mold, which can automatically cut and separate the sprue material of an injection-molded sealing ring injection molded part, and automatically remove the sealing ring injection molded part, thereby greatly reducing manual labor, improving processing efficiency, and reducing labor costs. Moreover, the device has no weld lines and has good quality.

[0008] The solution of the utility model to solve the technical problem is:

[0009] A mold sprue material automatic shedding device includes a fixed base, a plurality of oil cylinders fixed on the upper portion of the fixed base, the upper portions of the oil cylinders extending from the top surface of the fixed base, an upper support block fixed on the top surface of the fixed base, and push rods of the oil cylinders inserted into corresponding through holes on the top plate of the upper support block;

[0010] The top surface of the top plate of the upper support block is fixed with a lower template, the top surface of the lower template is fixed with a lower core fixing plate, and the top surface of the lower core fixing plate is pressed against a product push plate;

[0011] The middle part of the bottom surface of the lower template is formed with a placement groove extending upward, and the middle part of the top surface of the placement groove is formed with a lower through hole extending upward. The middle part of the lower core fixing plate is formed with a lower core mounting groove, and the middle part of the product pushing plate is formed with a middle pushing through hole, the lower through hole corresponds to the lower core mounting groove, and the lower core mounting through groove corresponds to the middle pushing through hole. The gate ring cutter fixing plate is in the placement groove, and the top surface of the gate ring cutter fixing plate is fixed with an upper mounting plate. The middle parts of the upper mounting plate and the gate ring cutter fixing plate are both formed with upper and lower corresponding mounting through holes. The bottom of the gate ring cutter is installed in the mounting through hole of the upper mounting plate, the lower part of the lower core insert is inserted into the mounting through hole of the gate ring cutter fixing plate, and the lower core insert is inserted into the middle through hole of the gate ring cutter and cooperates with it.

[0012] The top ends of the gate ring cutter and the lower core insert pass through the lower through hole, the lower core installation groove and the middle pusher through hole, and the top ends of the gate ring cutter and the lower core insert are located above the product push plate;

[0013] A lower core piece is installed in the lower core installation groove of the lower core fixing plate, the top of the lower core piece extends out of the top of the middle pusher hole, and the top of the gate ring cutter is inserted into the middle hole of the lower core piece.

[0014] A through hole is formed on the edge of the upper mounting plate, and an upper concave hole is formed on the top surface of the placement groove corresponding to the through hole. The reset spring is inserted into the through hole and the upper concave hole, and the top end of the reset spring is applied to the top surface of the upper concave hole, and the bottom end of the reset spring is applied to the corresponding top surface of the gate ring cutter fixing plate.

[0015] A radial extension groove is formed on the inner wall of the bottom of the placement groove, the fixed connecting plate is inserted into the bottom of the placement groove, the edge of the fixed connecting plate is inserted into the radial extension groove, the fixed connecting plate is fixedly connected to the lower template by bolts, the top surface of the edge of the fixed connecting plate is pressed against the top surface of the radial extension groove, the bottom surface of the gate ring cutter fixed plate is pressed against the top surface of the fixed connecting plate, a plurality of vertical through holes are formed on the fixed connecting plate, the upper part of the push rod of the oil cylinder extends out of the corresponding through holes on the top plate of the upper support block and is inserted into the corresponding vertical through holes, the top surface of the push rod is pressed against the bottom surface of the gate ring cutter fixed plate, and there is a distance between the top surface of the upper mounting plate and the top surface of the placement groove.

[0016] The top plate of the upper support block includes an upper top plate and a lower top plate pressed and fixed up and down, the bottom surface of the lower top plate is fixed with a support block, the bottom surface of the support block is fixed to the top surface of the fixed base, and the upper part of the oil cylinder is inserted into the vertical through groove formed on the support block;

[0017] A plurality of corresponding jacks are formed on the upper top plate and the lower top plate, and the corresponding jacks form a through hole.

[0018] A first through hole is formed in the middle of the upper top plate, and a corresponding vertical through groove is formed in the middle of the lower top plate. The lower vertical through groove corresponds to the first through hole up and down, and the width of the lower vertical through groove is greater than the inner diameter of the first through hole. A third through hole is formed in the middle of the fixed connecting plate, and the third through hole corresponds to the middle through hole of the lower core insert. The ejector rod is inserted into the middle through hole, the first through hole, the lower vertical through groove and the third through hole. A lifting plate is fixed to the bottom end of the ejector rod, and the lifting plate is inserted into the lower vertical through groove. The bottom surface of the lifting plate is pressed against the top surface of the support block.

[0019] The beneficial effects of the utility model are:

[0020] It can automatically cut and separate the sprue material of the injection-molded sealing ring injection parts, and automatically remove the sealing ring injection parts, greatly reducing manual labor, improving processing efficiency, and reducing labor costs. It has no weld lines and good quality. Description of the drawings:

[0021] Figure 1 It is a partial cross-sectional view of the utility model;

[0022] Figure 2 This is a schematic diagram of the local structure of the seal ring injection molded part when the gate ring cutter cuts (section lines omitted);

[0023] Figure 3 yes Figure 1 A partial enlarged view of

[0024] Figure 4 yes Figure 2 Schematic diagram of the local structure of the nozzle material ejection (cross-section omitted);

[0025] Figure 5 yes Figure 1 There is also a partial enlarged view. Specific implementation method:

[0026] For example, see Figures 1 to 5 As shown, a mold gate material automatic falling-off device includes a fixed base 10, and a plurality of oil cylinders 11 are fixed on the upper part of the fixed base 10. The upper part of the oil cylinder 11 extends out of the top surface of the fixed base 10, and the top surface of the fixed base 10 is fixed with an upper support block 20. The push rod 12 of the oil cylinder 11 is inserted into the corresponding through hole on the top plate of the upper support block 20; the top plate of the upper support block 20 includes an upper top plate and a lower top plate pressed and fixed up and down, and a support block 21 is fixed on the bottom surface of the lower top plate, and the bottom surface of the support block 21 is fixed on the top surface of the fixed base 10, and the upper part of the oil cylinder 11 is inserted into the vertical through groove formed on the support block 21; a plurality of upper and lower corresponding sockets are formed on the upper and lower top plates, and the upper and lower corresponding sockets constitute a through hole.

[0027] The top surface of the top plate of the upper support block 20 is fixed with a lower template 30, the top surface of the lower template 30 is fixed with a lower core fixing plate 400, and the top surface of the lower core fixing plate 400 is pressed with a product push plate 50;

[0028] The middle part of the bottom surface of the lower template 30 is formed with a placement groove 31 extending upward, the middle part of the top surface of the placement groove 31 is formed with a lower through hole 32 extending upward, the middle part of the lower core fixing plate 400 is formed with a lower core installation groove, and the middle part of the product pushing plate 50 is formed with a middle pushing hole 51, the lower through hole 32 corresponds to the lower core installation groove, the lower core installation groove corresponds to the middle pushing hole 51, and the gate ring cutter fixing plate 40 is in the placement groove. In the groove 31, an upper mounting plate 41 is fixed to the top surface of the gate ring cutter fixing plate 40, and upper and lower corresponding mounting through holes are formed in the middle of the upper mounting plate 41 and the gate ring cutter fixing plate 40. The bottom of the gate ring cutter 60 is installed in the mounting through hole of the upper mounting plate 41, and the lower part of the lower core insert 70 is inserted into the mounting through hole of the gate ring cutter fixing plate 40. The lower core insert 70 is inserted into the middle through hole of the gate ring cutter 60 and cooperates with it;

[0029] The top ends of the gate ring cutter 60 and the lower core insert 70 pass through the lower through hole 32, the lower core mounting groove and the middle pusher through hole 51, and the top ends of the gate ring cutter 60 and the lower core insert 70 are located above the product push plate 50;

[0030] The lower core piece 80 is mounted in the lower core mounting groove of the lower core fixing plate 400. The top of the lower core piece 80 extends out of the top of the middle pusher hole 51, and the top of the gate ring cutter 60 is inserted into the middle hole of the lower core piece 80. The middle pusher hole 51 is a tapered hole with a smaller inner diameter at the top and a larger inner diameter at the bottom. The upper outer wall of the lower core piece 80 is also a tapered wall surface that matches and closely adheres to the inner wall surface of the tapered hole.

[0031] Furthermore, an annular groove portion is formed on the lower inner wall of the central through hole of the lower core member 80, and the top surface of the annular groove portion is a conical wall surface with a small diameter at the upper end and a large diameter at the lower end. A radially extending thickened portion 61 is formed on the outer wall from the middle to the bottom of the gate ring cutter 60, and the top surface of the thickened portion 61 is a conical surface, which corresponds to and is close to the conical wall surface.

[0032] Furthermore, a through hole is formed on the edge of the upper mounting plate 41, and an upper concave hole is formed on the top surface of the placement groove 31 corresponding to the through hole. The reset spring 1 is inserted into the through hole and the upper concave hole, and the top end of the reset spring 1 relies on the top surface of the upper concave hole, and the bottom end of the reset spring 1 relies on the corresponding top surface of the gate ring cutter fixing plate 40.

[0033] Furthermore, a radial extension groove is formed on the inner wall of the bottom of the placement groove 31, and the fixed connecting plate 33 is inserted into the bottom of the placement groove 31, and the edge of the fixed connecting plate 33 is inserted into the radial extension groove. The fixed connecting plate 33 is fixedly connected to the lower template 30 by bolts, and the top surface of the edge of the fixed connecting plate 33 is pressed against the top surface of the radial extension groove, and the bottom surface of the gate ring cutter fixing plate 40 is pressed against the top surface of the fixed connecting plate 33. A plurality of vertical through holes are formed on the fixed connecting plate 33, and the upper part of the push rod 12 of the oil cylinder 11 extends out of the corresponding through holes on the top plate of the upper support block 20 and is inserted into the corresponding vertical through holes. The top surface of the push rod 12 is pressed against the bottom surface of the gate ring cutter fixing plate 40, and there is a distance 2 between the top surface of the upper mounting plate 41 and the top surface of the placement groove 31.

[0034] Furthermore, a first through hole is formed in the middle of the upper top plate, and a corresponding vertical through groove is formed in the middle of the lower top plate. The lower vertical through groove corresponds to the first through hole up and down, and the width of the lower vertical through groove is greater than the inner diameter of the first through hole. A third through hole is formed in the middle of the fixed connecting plate 33, and the third through hole corresponds to the middle through hole of the lower core insert 70. The ejector rod 3 is inserted into the middle through hole, the first through hole, the lower vertical through groove and the third through hole. A lifting plate 4 is fixed to the bottom end of the ejector rod 3, and the lifting plate 4 is inserted into the lower vertical through groove. The bottom surface of the lifting plate 4 is pressed against the top surface of the support block 21.

[0035] Furthermore, the inner side wall of the top end of the gate ring cutter 60 is a tapered wall surface with a larger diameter at the upper end and a smaller diameter at the lower end, and the top end of the gate ring cutter 60 extends out of the top surface of the lower core piece 80 .

[0036] When this embodiment is in use, an oil circuit is provided in the fixed base 10 thereof, which is connected to the oil cylinder 11, and the oil inlet of the oil circuit is connected to the control valve of the oil pump output port through a connecting pipe. It is a conventional hydraulic system and will not be described in detail here.

[0037] When this embodiment is in use, the upper mold block is first pressed against the product push plate 50, and the upper core block is pressed against the top of the lower core piece 80. A molding cavity is formed between the top edge of the lower core piece 80 and the lower cavity of the upper core block. The rubber enters the molding cavity from the feed port of the upper core block and is molded.

[0038] Then, the push rods 12 of all the oil cylinders 11 push, so that the upper mounting plate 41 and the gate ring cutter fixing plate 40 are lifted, so that the top surface of the upper mounting plate 41 is pressed against the top surface of the placement groove 31, just moving the length of the spacing 2. At this time, the gate ring cutter 60 and the lower core insert 70 move upward at the same time, cutting the sprue material 101 in the middle of the sealing ring injection molded part 100, separating it from the sealing ring injection molded part 100, and then, the upper core block is lifted back to its position, and the product push plate 50 and the lifting plate 4 of the push rod 3 are pushed by the push rod of the oil cylinder to which it is connected (this connection structure is a conventional structure, not shown in the accompanying drawings), thereby ejecting the sealing ring injection molded part 100 and the sprue material 101 from the top to realize unloading, which has a high degree of automation, good effect and high efficiency.

Claims

1. A mold nozzle material automatic shedding device, comprising a fixed base (10), characterized in that: A plurality of oil cylinders (11) are fixed on the upper portion of the fixed base (10), the upper portions of the oil cylinders (11) extend out of the top surface of the fixed base (10), an upper support block (20) is fixed to the top surface of the fixed base (10), and push rods (12) of the oil cylinders (11) are inserted into corresponding through holes on the top plate of the upper support block (20); A lower mold plate (30) is fixed to the top surface of the top plate of the upper support block (20), a lower core fixing plate (400) is fixed to the top surface of the lower mold core fixing plate (400), and a product push plate (50) is pressed against the top surface of the lower core fixing plate (400); The bottom surface of the lower template (30) is formed with an upwardly extending placement groove (31) in the middle, the top surface of the placement groove (31) is formed with an upwardly extending lower through hole (32) in the middle, the lower core fixing plate (400) is formed with a lower core installation groove in the middle, the product push plate (50) is formed with a middle push hole (51) in the middle, the lower through hole (32) corresponds to the lower core installation groove, the lower core installation groove corresponds to the middle push hole (51), the gate ring cutter fixing plate (40) is in the placement groove (31), an upper mounting plate (41) is fixed to the top surface of the gate ring cutter fixing plate (40), and upper and lower corresponding mounting through holes are formed in the middle of the upper mounting plate (41) and the gate ring cutter fixing plate (40), the bottom of the gate ring cutter (60) is installed in the mounting through hole of the upper mounting plate (41), the lower part of the lower core insert (70) is inserted into the mounting through hole of the gate ring cutter fixing plate (40), and the lower core insert (70) is inserted into the middle through hole of the gate ring cutter (60) and matched therewith; The top ends of the gate ring cutter (60) and the lower core insert (70) pass through the lower through hole (32), the lower core installation groove and the middle pusher through hole (51), and the top ends of the gate ring cutter (60) and the lower core insert (70) are located above the product push plate (50); A lower core piece (80) is installed in the lower core installation groove of the lower core fixing plate (400), the top of the lower core piece (80) extends out of the top of the middle pusher hole (51), and the top of the gate ring cutter (60) is inserted into the middle hole of the lower core piece (80).

2. The automatic mold nozzle material removal device according to claim 1, characterized in that: An annular groove portion is formed on the lower inner wall of the middle through hole of the lower core piece (80), and the top surface of the annular groove portion is a tapered wall surface with a small diameter at the upper end and a large diameter at the lower end. A radially extending thickened portion (61) is formed on the outer wall from the middle to the bottom of the gate ring cutter (60), and the top surface of the thickened portion (61) is a tapered surface, which corresponds to and is close to the tapered wall surface.

3. The automatic mold nozzle material removal device according to claim 1, characterized in that: The edge of the upper mounting plate (41) is formed with a through hole, and the top surface of the placement groove (31) corresponding to the through hole is formed with an upper concave hole. The reset spring (1) is inserted into the through hole and the upper concave hole, and the top end of the reset spring (1) is applied to the top surface of the upper concave hole, and the bottom end of the reset spring (1) is applied to the corresponding top surface of the gate ring cutter fixing plate (40).

4. The automatic mold nozzle material removal device according to claim 1, characterized in that: A radial extension groove is formed on the inner side wall of the bottom of the placement groove (31), and the fixed connecting plate (33) is inserted into the bottom of the placement groove (31), and the edge of the fixed connecting plate (33) is inserted into the radial extension groove. The fixed connecting plate (33) is fixedly connected to the lower template (30) by bolts, and the top surface of the edge of the fixed connecting plate (33) is pressed against the top surface of the radial extension groove. The bottom surface of the gate ring cutter fixing plate (40) is pressed against the top surface of the fixed connecting plate (33). A plurality of vertical through holes are formed on the fixed connecting plate (33). The upper part of the push rod (12) of the oil cylinder (11) extends out of the corresponding through holes on the top plate of the upper support block (20) and is inserted into the corresponding vertical through holes. The top surface of the push rod (12) is pressed against the bottom surface of the gate ring cutter fixing plate (40). There is a spacing (2) between the top surface of the upper mounting plate (41) and the top surface of the placement groove (31).

5. The automatic mold nozzle material removal device according to claim 1, characterized in that: The middle pushing hole (51) is a tapered hole with a small inner diameter at the top and a large inner diameter at the bottom. The upper outer wall of the lower core piece (80) is also a tapered wall surface, which matches and fits tightly with the inner wall surface of the tapered hole.

6. The automatic mold nozzle material removal device according to claim 4, characterized in that: The top plate of the upper support block (20) comprises an upper top plate and a lower top plate pressed against and fixed to each other, a support block (21) is fixed to the bottom surface of the lower top plate, the bottom surface of the support block (21) is fixed to the top surface of the fixed base (10), and the upper part of the oil cylinder (11) is inserted into a vertical through groove formed on the support block (21); A plurality of corresponding jacks are formed on the upper top plate and the lower top plate, and the corresponding jacks form a through hole.

7. The automatic mold nozzle material removal device according to claim 6, characterized in that: A first through hole is formed in the middle of the upper top plate, and a corresponding vertical through groove is formed in the middle of the lower top plate. The lower vertical through groove corresponds to the first through hole in upper and lower directions, and the width of the lower vertical through groove is greater than the inner diameter of the first through hole. A third through hole is formed in the middle of the fixed connecting plate (33), and the third through hole corresponds to the middle through hole of the lower core insert (70). The top rod (3) is inserted into the middle through hole, the first through hole, the lower vertical through groove and the third through hole. A lifting plate (4) is fixed to the bottom end of the top rod (3), and the lifting plate (4) is inserted into the lower vertical through groove. The bottom surface of the lifting plate (4) is pressed against the top surface of the support block (21).

8. The automatic mold nozzle material removal device according to claim 1, characterized in that: The inner side wall of the top end of the gate ring cutter (60) is a tapered wall surface with a larger diameter at the top end and a smaller diameter at the bottom end, and the top end of the gate ring cutter (60) extends out of the top end surface of the lower core piece (80).

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