Cut-off tool for flow channel of foaming punching die
By designing the flow channel cutter of the foaming die and utilizing the sliding seal of the cutter resin sealing guide block, the problem of the cutter getting stuck during the foaming process is solved, achieving unobstructed flow of foaming material and reducing product breakage.
Patent Information
- Application Number
- CN202423310660.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In multi-cavity foaming molds, existing cutting blades are prone to jamming during the foaming process when the foaming material seeps into the gap between the cutting blade and the lower mold core, increasing product damage and manufacturing costs.
Design a foaming die flow channel cutter, which uses a cutter resin sealing guide block to slide and seal the gap between the cutter and the mold core flow channel, sealing the foaming material during the foaming process to prevent it from seeping into the gap; and cutting off the product waste after the injection is completed.
It achieves unobstructed flow during the foaming process, ensuring smooth flow of the foaming material, reducing the risk of product breakage, improving production efficiency, and reducing costs.
Smart Images
Figure CN223685874U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to foaming punch -cutting mould machinery field, concretely relates to a foaming punch -cutting mould runner cutting knife. BACKGROUND
[0002] For multi-cavity foaming mould, the foaming machine used with the customer's on-site matched mould has only one gun head injection. For this situation, the center position of multiple product arrangement is taken as the gun head injection position, the foaming material is introduced to the product area through the in-mould hidden runner (injection runner), and the scheme of single gun head foaming multiple products is realized. The defect of the scheme is that the foaming material in the runner needs to be manually cut off when the operator takes the product, which is easy to cause the damage of the product and increase the cost of product manufacturing. Therefore, a cutting knife needs to be designed in the runner to cut off the waste material outside the product. At present, the cutting knife is inserted into the runner to cut off, which is easy to realize, but the foaming material runner is strong in the foaming process, which is easy to penetrate into the gap between the cutting knife and the lower die core, causing the jamming of the cutting knife guide. CONTENT OF THE UTILITY MODEL
[0003] In order to solve the above technical problems, the utility model provides a foaming punch -cutting mould runner cutting knife, which is ingenious in design, reasonable and compact in structure, can seal the foaming material in the foaming process, and prevent the penetration into the cutting knife guide to cause the jamming.
[0004] The technical scheme of the utility model:
[0005] The foaming punch -cutting mould runner cutting knife, the foaming punch -cutting mould includes an upper die core, a lower die core and a foaming material injection gun, the upper die core can be buckled on the lower die core, and two product foaming material cavities are designed between the upper die core and the lower die core, the two product foaming material cavities are communicated through an injection runner, the upper end of the upper die core is provided with the foaming material injection gun, the lower end of the foaming material injection gun is communicated with the injection runner near the middle position, the lower die core is provided below with the foaming punch -cutting mould runner cutting knife, which comprises a cutting knife, a cutting knife fixing plate, a cutting knife guide seat, a cutting knife resin sealing guide block, a cutting knife cylinder and a knife pad, the cutting knife cylinder is installed below the lower die core, the upper end of the cutting knife cylinder is provided with the cutting knife fixing plate, the cutting knife fixing plate is installed on the upper die core, the cutting knife guide seat is installed below the lower die core, the upper surface of the cutting knife guide seat is provided with a first through groove penetrating upward and downward, and the inner side of the lower end of the first through groove is provided with a groove with rough inner wall or knurling treatment, the cutting knife resin sealing guide block is installed in the groove, the cutting knife resin sealing guide block is designed with a guide groove in the middle for sliding sealing cooperation with the upper end of the cutting knife, the guide groove is communicated with the first through groove, a guide port is formed on the lower die core below the injection runner, the guide port is communicated with the first through groove, the cutting knife can slide through the guide groove, the first through groove and the guide port in sequence, and the knife pad is installed below the upper die core and located above the cutting knife.
[0006] The cutter resin sealing guide block is integrally formed by resin glue pouring and curing.
[0007] The groove bottom surface of the cutter guide seat is parallel to the upper surface of the cutter guide seat.
[0008] The cutting knives are designed as two, and the cutting knives are respectively installed on the upper end of the cutter fixing plate and located at the position below the two ends of the injection material flow channel.
[0009] The utility model discloses a cutting knife resin sealing guide block is integrally formed by resin glue pouring and curing. BRIEF DESCRIPTION OF DRAWINGS
[0010] Fig. 1 It is the schematic diagram of the utility model.
[0011] Fig. 2 It is the vertical section schematic diagram of the injection material flow channel of the utility model.
[0012] Fig. 3 It is the simplified schematic diagram of the cutting knife of the utility model. DETAILED DESCRIPTION
[0013] Referring to the drawings Figs. 1-3foaming cutting die flow channel cutting knife, the foaming cutting die flow channel cutting knife comprises an upper die core 1, a lower die core 2, a foaming material injection gun 3, the upper die core 1 can be buckled on the upper surface of the lower die core 2, and the upper die core 1 and the lower die core 2 are designed to form two product foaming material cavities 4 on the left and right, the two product foaming material cavities 4 are communicated through an injection material flow channel 5, the upper end of the upper die core 1 is provided with the foaming material injection gun 3, the lower end of the foaming material injection gun 3 is communicated with the injection material flow channel 5 near the middle position, and the lower die core 2 is provided below with the foaming cutting die flow channel cutting knife, which comprises a cutting knife 6, a cutting knife fixing plate 7, a cutting knife guide seat 8, a cutting knife resin sealing guide block 9, a cutting knife cylinder 10 and a knife pad 11, the cutting knife cylinder 10 is arranged below the lower die core 2, the upper end of the cutting knife cylinder 10 is provided with the cutting knife fixing plate 7, the cutting knife fixing plate 7 is provided on the upper surface with the cutting knife 6, the cutting knife guide seat 8 is arranged below the lower die core 2, the upper surface of the cutting knife guide seat 8 is provided with a first through groove penetrating upward and downward, and the inner side of the lower end of the first through groove is provided with a groove with a rough inner wall or a knurled surface, the cutting knife resin sealing guide block 9 is arranged in the groove, the cutting knife resin sealing guide block 9 is designed with a guide groove in the middle for sliding sealing cooperation with the upper end of the cutting knife 6, the guide groove is communicated with the first through groove, a guide port is formed at the port position of the injection material flow channel 5 below the lower die core 2, the guide port is communicated with the first through groove, the cutting knife 6 can slide through the guide groove, the first through groove and the guide port in sequence, and the knife pad 11 is arranged below the upper die core 1 and located above the cutting knife 6.
[0014] The cutting knife resin sealing guide block 9 is integrally formed by resin glue pouring.
[0015] The groove bottom surface of the cutting knife guide seat 8 is designed to be parallel to the upper surface of the cutting knife guide seat 8.
[0016] The cutting knife 6 is designed to have two, the cutting knife 6 is arranged on the upper end of the cutting knife fixing plate 7 and located below the two ends of the injection material flow channel 5, and the guide ports for the cutting knife 6 to pass through are formed below the injection material flow channel 5. The cutting edge of the cutting knife is designed according to the injection material flow channel, and the front section of the cutting edge of the cutting knife is designed to have a 0.3mm wide blade edge. The knife pad is made of steel.
[0017] The cutting knife resin sealing guide block 9 is integrally formed by resin glue pouring.
[0018] Step one, surface finishing of the cutting knife 6, the roughness is required to be 0.6-0.8;
[0019] Step two, surface spraying of the cutting knife 6 with a release agent;
[0020] Step three, rough processing is carried out in the groove of the cutter guide seat 8, and the roughness of the inner wall of the groove is increased by slotting or knurling; this mode is to increase the adhesion between the cured cutter resin sealing guide block and the groove, and prevent the cutter guide seat from being pulled out together with the cutting knife during demolding;
[0021] Step four, the groove of the cutter guide seat 8 is placed upward, and the cutting knife 6 is slidably inserted into the first through groove of the cutter guide seat 8,
[0022] Step five, the resin glue is poured into the gap between the cutting knife 6 and the groove of the cutter guide seat 8, and waits for 24 hours for curing and forming;
[0023] Step six, after solidification at room temperature, the cutting knife 6 is taken out, and the cutter resin sealing guide block 9 is poured and connected in the groove of the cutter guide seat 8.
[0024] The resin glue comprises A glue and B glue, the A glue is a filler (754A), the B glue is a curing agent (754B), and the weight ratio of the A glue to the B glue is 5:1. The two kinds of glue can be quickly mixed and cured, and after curing and forming, it has good sealing and lubricating properties, which ensures the sliding sealing of the cutting knife and the cutter resin sealing guide block after forming, and prevents the foaming material from leaking and causing jamming problems.
[0025] The A glue and the B glue are mixed according to the proportion before use, stirred for 2 minutes at room temperature, and then poured into the gap between the cutting knife 6 and the groove of the cutter guide seat 8 for curing.
[0026] The cutting knife structure of the utility model is in a retracted state before the mold is closed, and is retracted by 1-2 mm below the injection material runner of the foaming mold, liquid foaming material is injected in the mold cavity after the mold is closed, and when the foaming material flows through the injection material runner, the resin glue and the cutting knife perfectly cooperate without gap, so that the foaming material smoothly flows through the injection material runner; after the injection is completed, the cutting knife cylinder goes up with the cutting knife fixing plate, the cutting knife fixing plate simultaneously slides and ejects the two cutting knives in the cutter resin sealing guide block and the first through groove of the cutter guide seat, and reaches the upper knife pad, and the two ends of the waste material 12 in the injection material runner are connected with the product 13 by flat collision; after the mold is opened, the product 13 and the waste material 12 are taken out. The utility model is designed for the number of cutting knives of the double-station foaming product, and in the actual production process, the cutting knife structure of the corresponding position can be increased according to the number of foaming stations.
Claims
1. A foaming cutting die flow channel cutting knife, the foaming cutting die comprising an upper die core, a lower die core, a foaming material injection gun, the upper die core being detachably coupled to the lower die core, and a left and right product foaming material cavity being formed between the upper die core and the lower die core, the two product foaming material cavities being communicated by an injection flow channel, the upper die core being provided with the foaming material injection gun at an upper end thereof, the foaming material injection gun being communicated at a lower end thereof to the injection flow channel at a position close to the middle, and the lower die core being provided with the foaming cutting die flow channel cutting knife below, characterized in that, It includes cutting knife, cutting knife fixed plate, cutting knife guide seat, cutting knife resin sealing guide block, cutting knife cylinder, knife pad, the lower mold core is provided with cutting knife cylinder, the upper end of cutting knife cylinder is provided with cutting knife fixed plate, the upper surface of cutting knife fixed plate is provided with cutting knife, cutting knife guide seat is installed below the lower mold core, the upper surface of cutting knife guide seat is provided with first through slot which is through up and down, and the inner side of the lower end of first through slot is provided with recess with rough inner wall or knurling, cutting knife resin sealing guide block is installed in recess, the middle of cutting knife resin sealing guide block is designed with guide groove for sliding sealing cooperation of the upper end of cutting knife, the guide groove is communicated with first through slot, the lower surface of lower mold core is provided with guide port at the position of the port of injection flow channel, the lower surface of guide port is communicated with first through slot, cutting knife can slide through guide groove, first through slot and guide port in sequence, knife pad is installed below upper mold core and above cutting knife.
2. The foamed die-cutting mold flow channel cutting knife according to claim 1, characterized by, The cutting knife resin sealing guide block is integrally formed by resin glue casting.
3. The foamed die-cutting mold flow channel cutting knife according to claim 1, characterized by, The recess bottom surface of cutting knife guide seat is parallel to the upper surface of cutting knife guide seat.
4. The foamed die-cutting mold flow channel cutting knife according to claim 1, characterized by, The cutting knife is designed with two, and the cutting knife is installed on the upper end of cutting knife fixed plate and below the two ends of injection flow channel, the lower surface of injection flow channel is provided with corresponding guide port for cutting knife.