Anti-residual in-mold water gap cutting type injection mold

Abstract

The utility model discloses a residual-preventing in-mold water gap cutting type injection mold, which comprises a mold body, a water gap cutting mechanism, a water gap cutting mechanism, a water gap cutting mechanism, a water gap cutting mechanism, a water gap cutting mechanism and a water gap cutting mechanism, and is characterized in that the mold body comprises an upper mold and a lower mold; the inner cutting assembly comprises an air cylinder and a scraper knife, the air cylinder is arranged on the lower die, the scraper knife is detachably connected to the air cylinder, and the air cylinder drives the scraper knife to move; the guide assembly comprises a gear and a rack, the gear is rotationally connected to the lower die, the rack is arranged on the air cylinder, and the gear is meshed with the rack. Compared with the prior art, the air cylinder and the scraper knife are arranged, so that a water gap can be removed during secondary injection molding of a product, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection mold with an in-mold gate type that prevents residual sprue. Background Technology

[0002] Molds, often called the "mother of industry," are specialized tools used to help shape metal or non-metal materials. There are various methods for molding plastics, with injection molding being the most widely used and one of the most common processing methods in the plastics industry today. It can mold plastic products with complex shapes and structures in a single step.

[0003] The current process for removing sprue marks is as follows: after injection molding, a robot arm removes the product and places it into a positioning fixture. Then, the sprue is cut using shears on the robot arm's gripper. The cut product is then placed into another injection mold for secondary injection molding. Due to differences in the positioning fixture and potential positional deviations of the robot arm, the residual height of the sprue after cutting varies. The robot arm's cutting position needs to be periodically corrected; failure to do so will result in excessive sprue residue or damage to the product. Utility Model Content

[0004] This utility model provides an in-mold gate-cutting injection mold that prevents residual gates. By using a cylinder and a scraper, the gates can be removed during the second injection of the product, thus improving production efficiency.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a type of injection mold with anti-residue in-mold sprue cutting, comprising:

[0006] The mold body includes an upper mold and a lower mold that matches the upper mold;

[0007] An internal cutting assembly includes a cylinder and a scraper, the cylinder being mounted on the lower mold and the scraper being detachably connected to the cylinder, the cylinder driving the scraper to move;

[0008] A guide assembly includes a gear and a rack, the gear being rotatably connected to the lower mold, and the rack being disposed on the cylinder, the gear meshing with the rack.

[0009] As a further description of the above technical solution:

[0010] The rack is mounted on the drive rod of the cylinder.

[0011] As a further description of the above technical solution:

[0012] A cylindrical rod is threaded onto the drive rod of the cylinder, and the rack is mounted on the cylindrical rod.

[0013] As a further description of the above technical solution:

[0014] The lower mold is provided with an installation groove, and an installation block is provided in the installation groove. The installation block is detachably connected to the installation groove, and the gear is rotatably connected to the installation block.

[0015] As a further description of the above technical solution:

[0016] The mounting block is detachably connected to the lower mold by bolts.

[0017] As a further description of the above technical solution:

[0018] The shape of the shovel blade matches the structure of the sprue root.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: By using the cylinder and scraper, the sprue can be removed during the secondary injection molding of the product, improving production efficiency. It can solve the problems of existing robotic arms having positional deviations, inconsistent residual height of the sprue after cutting, and the need for regular correction of the robotic arm's cutting position, which would result in too much residual material or damage to the product if not corrected. The scraper is contoured according to the structure of the sprue root, and the use of a U-shaped blade with an arc surface structure can improve the quality of sprue removal. The gears and racks ensure that the scraper moves upward or downward along a straight line and remains stable during movement, further improving the quality of sprue removal. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an injection mold with an in-mold gate that prevents residual sprues.

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 This is a schematic diagram of the cylinder structure in an in-mold injection mold designed to prevent residual sprue.

[0024] Figure 4 This is a schematic diagram of the connection structure of a cylindrical rod in an injection mold with an in-mold gate type that prevents residual sprue.

[0025] Legend:

[0026] 1. Upper mold; 2. Lower mold; 3. Cylinder; 4. Shovel; 5. Gear; 6. Rack; 7. Drive rod; 8. Cylindrical rod; 9. Mounting slot; 10. Mounting block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 This utility model provides a technical solution: an injection mold with an in-mold gate-cutting type that prevents residual sprue, comprising:

[0029] The mold body includes an upper mold 1 and a lower mold 2 that matches the upper mold 1;

[0030] The internal cutting assembly includes a cylinder 3 and a scraper 4. The cylinder is mounted on the lower mold, and the scraper 4 is detachably connected to the cylinder 3. The cylinder 3 drives the scraper 4 to move.

[0031] The guide assembly includes a gear 5 and a rack 6. The gear 5 is rotatably connected to the lower mold, and the rack 6 is disposed on the cylinder 3. The gear 5 meshes with the rack 6.

[0032] In one implementation, such as Figure 3 The rack 6 is mounted on the drive rod 7 of the cylinder 3. The rack is directly engraved on the drive rod, which saves space.

[0033] In another implementation, such as Figure 4 A cylindrical rod 8 is threadedly connected to the drive rod 7 of the cylinder 3, and the rack 6 is mounted on the cylindrical rod 8. This serves to protect the drive rod.

[0034] The lower mold 2 is provided with a mounting groove 9, and a mounting block 10 is provided in the mounting groove 9. The mounting block is detachably connected to the mounting groove 9, and the gear 5 is rotatably connected to the mounting block 10. The mounting block 10 is detachably connected to the lower mold 2 by bolts. This facilitates the installation and removal of the gear and reduces the assembly difficulty.

[0035] The shape of the scraper 4 matches the structure of the sprue root, improving the quality of sprue removal. The scraper is connected to the cylinder with screws for easy disassembly and replacement.

[0036] Working principle: Through the set cylinder and scraper, the sprue can be removed during the second injection molding of the product, which improves production efficiency. It can solve the problems of positional deviation of existing robots, the difference in the height of the residual material after cutting, and the need for regular correction of the robot's cutting position. Failure to correct will result in too much cutting residue or damage to the product. The scraper conforms to the structure of the sprue root and adopts a U-shaped blade with an arc surface structure, which can improve the quality of sprue removal. Through the set gears and racks, it can ensure that the scraper moves upward or downward along a straight line and remains stable during the movement, further improving the quality of sprue removal.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A type of injection mold with in-mold gate cutting to prevent residual sprue, characterized in that, include: The mold body includes an upper mold and a lower mold that matches the upper mold; An internal cutting assembly includes a cylinder and a scraper, the cylinder being mounted on the lower mold and the scraper being detachably connected to the cylinder, the cylinder driving the scraper to move; A guide assembly includes a gear and a rack, the gear being rotatably connected to the lower mold, and the rack being disposed on the cylinder, the gear meshing with the rack.

2. The anti-residue in-mold sprue injection mold according to claim 1, characterized in that, The rack is mounted on the drive rod of the cylinder.

3. The anti-residue in-mold sprue injection mold according to claim 1, characterized in that, A cylindrical rod is threaded onto the drive rod of the cylinder, and the rack is mounted on the cylindrical rod.

4. The anti-residue in-mold sprue injection mold according to claim 1, characterized in that, The lower mold is provided with an installation groove, and an installation block is provided in the installation groove. The installation block is detachably connected to the installation groove, and the gear is rotatably connected to the installation block.

5. The anti-residue in-mold sprue injection mold according to claim 4, characterized in that, The mounting block is detachably connected to the lower mold by bolts.

6. The anti-residue in-mold sprue injection mold according to claim 1, characterized in that, The shape of the shovel blade matches the structure of the sprue root.

Images