Automatic water gap cutting device for injection molded part

Abstract

The invention discloses an automatic water gap cutting device for an injection molded part, which comprises a jig seat, a feeding mechanism, a discharging mechanism and a water gap cutting mechanism, the jigs are fixedly installed on the surface of the jig seat, one jig corresponds to one blanking hole, a profiling positioning block is arranged on each jig, a water gap hole is formed in each profiling positioning block, a cutter limiting hole is formed in one side of each water gap hole, and each cutter limiting hole communicates with the corresponding water gap hole; the first cutting module is fixedly mounted on the back surface of the jig seat; and the second cutting module is fixedly installed on the back face of the jig base, the second cutting module and the first cutting module are symmetrically arranged on the two sides of the jig base, the second cutting module comprises a plurality of second tool rests which are arranged in parallel, and the second tool rests and the first tool rests are arranged at intervals. Compared with the prior art, the problems of unstable cutting quality and potential safety hazards of an existing water gap cutting process of the injection molding part are solved.

Description

Technical Field

[0001] This invention relates to the field of injection molding processing technology, and in particular to an automatic gate-cutting device for injection molded parts. Background Technology

[0002] Injection molding is a manufacturing process that involves injecting molten plastic into a mold cavity, which then cools and solidifies to obtain the finished product. It is widely used in the automotive, electronics, and home appliance industries. During injection molding, the sprue is the necessary channel for molten plastic to enter the mold cavity from the injection molding machine nozzle. After the plastic solidifies, this channel forms solid waste that adheres to the finished product. Therefore, excess sprue material needs to be removed after demolding and unloading.

[0003] In the current injection molding process, after the injection molded parts are demolded and unloaded, the sprue is removed manually. This not only results in inconsistent quality of sprue removal, causing appearance defects in the injection molded parts and hindering subsequent processing, but also puts a lot of physical strain on the operators. Furthermore, manual sprue cutting tools such as sprue pliers can pose safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic gate cutting device for injection molded parts, so as to solve the problems of unstable gate cutting quality and safety hazards in the existing gate cutting process for injection molded parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic gate-cutting device for injection molded parts, comprising: The fixture base has several material drop holes arranged in an array. The fixture is fixedly installed on the surface of the fixture base. Each fixture corresponds to a material drop hole. The fixture is equipped with a contour positioning block, and the contour positioning block is equipped with a sprue hole. A tool limiting hole is provided on one side of the sprue hole, and the tool limiting hole is connected to the sprue hole. The first cutting module is fixedly installed on the back of the fixture seat. The first cutting module includes a cutter, a first cutter holder, a first end plate, a first linkage rod, and a first drive cylinder. The cutter passes through the cutter limiting hole and is fixedly installed on the first cutter holder. The first cutter holder is slidably connected to the fixture seat. Several first cutter holders are arranged in parallel. The first cutter holder is fixedly installed at the bottom of the first linkage rod. The first cutter holder at one end of the first linkage rod is fixedly connected to the first end plate. The first drive cylinder is fixedly installed on the fixture seat. The piston rod end of the first drive cylinder is connected to a transmission rod. The transmission rod is fixedly installed on the first end plate. The second cutting module is fixedly installed on the back of the fixture seat. The second cutting module and the first cutting module are symmetrically arranged on both sides of the fixture seat. The second cutting module includes several parallel second blade holders, which are arranged at intervals with the first blade holders.

[0006] As a further description of the above technical solution: The transmission rod is a threaded rod, and the transmission rod is threadedly connected to the first end plate.

[0007] As a further description of the above technical solution: The first tool holder includes a tool mounting plate and an edge connecting block. The tool mounting plate is slidably connected in the material drop hole, and the edge connecting block is slidably connected on the slide rail. One end of the edge connecting block is fixedly mounted on the tool mounting plate. A linkage block is provided between two adjacent tool mounting plates, and the end of the linkage block is fixedly mounted on the tool mounting plate.

[0008] As a further description of the above technical solution: The tool mounting plate has several first threaded holes arranged in an array. The cutter is fixedly mounted on the tool mounting plate by a first bolt, which passes through the cutter and is threaded into the first threaded hole.

[0009] As a further description of the above technical solution: The cutter has a first oblong hole, and the first bolt passes through the first oblong hole.

[0010] As a further description of the above technical solution: The first cutting module includes two first drive cylinders arranged in parallel.

[0011] As a further description of the above technical solution: The first linkage rod is provided with a second oblong hole, and the second bolt passes through the second oblong hole and is threaded onto the first tool holder.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, when the injection molded part is placed on the fixture of the fixture seat after demolding and the sprue is cut, the fixture positions the injection molded part by the contour positioning block, and the sprue on the injection molded part extends into the sprue hole. Then, the first cutter post of the first cutting module and the second cutter post of the second cutting module on the back of the fixture seat move synchronously towards each other, so that the sprue material of the injection molded parts on several fixtures is cut off synchronously. The cutting quality and cutting efficiency of the sprue material of the injection molded part are high, which effectively solves the problems of unstable cutting quality and safety hazards in the existing sprue cutting process of injection molded parts.

[0013] 2. In this invention, the first cutting module and the second cutting module are used to drive the cutter to cut the sprue material in opposite directions. The multiple cutter holders of a single cutting module are driven synchronously through linkage rods. The linkage rods of the first cutting module and the second cutting module are staggered, which effectively simplifies the driving structure and improves the structural reliability.

[0014] 3. In this invention, the transmission rod in the first cutting module is a threaded rod. After the transmission rod is fixed to the first end plate, the end is connected to the piston rod of the first driving cylinder, so that the length of the transmission rod extending out of the first end plate can be adjusted. Thus, when cutting the gate of different injection molded parts, the position of the first end plate and the cutter can be adjusted according to the different gate positions, thereby improving the versatility of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention 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.

[0016] Figure 1 This is a schematic diagram of an automatic sprue cutting device for injection molded parts. Figure 1 .

[0017] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0018] Figure 3 This is a schematic diagram of an automatic sprue cutting device for injection molded parts. Figure 2 .

[0019] Figure 4 This is a schematic diagram of the installation of a fixture in an automatic sprue cutting device for injection molded parts.

[0020] Figure 5 This is a schematic diagram of the structure of the first cutting module in an automatic sprue cutting device for injection molded parts. Figure 1 .

[0021] Figure 6 This is a schematic diagram of the structure of the first cutting module in an automatic sprue cutting device for injection molded parts. Figure 2 .

[0022] Figure 7 This is a schematic diagram of the structure of the second cutting module in an automatic sprue cutting device for injection molded parts.

[0023] Legend: 1. Jig seat; 11. Blanking hole; 12. Slide rail; 2. Fixture; 21. Contouring positioning block; 211. Tool limiting hole; 3. First cutting module; 31. Cutting blade; 311. First oblong hole; 32. First blade holder; 321. Blade mounting plate; 3211. First threaded hole; 322. Edge connecting block; 323. Linkage block; 33. First end plate; 34. First linkage rod; 341. Second oblong hole; 35. First drive cylinder; 351. Transmission rod; 4. Second cutting module; 41. Second blade holder. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. Example 1

[0026] Please see Figure 1-7 The present invention provides a technical solution: an automatic gate-cutting device for injection molded parts, comprising: The fixture base 1 has several material dropping holes 11 arranged in an array on it; The fixture 2 is fixedly installed on the surface of the fixture base 1. One fixture 2 corresponds to one material drop hole 11. The fixture 2 is provided with a contour positioning block 21. The contour positioning block 21 is provided with a sprue hole. A tool limiting hole 211 is provided on one side of the sprue hole. The tool limiting hole 211 is connected to the sprue hole. The first cutting module 3 is fixedly installed on the back of the fixture seat 1. The first cutting module 3 includes a cutter 31, a first cutter holder 32, a first end plate 33, a first linkage rod 34, and a first drive cylinder 35. The cutter 31 passes through the cutter limiting hole 211 and is fixedly installed on the first cutter holder 32. The first cutter holder 32 is slidably connected to the fixture seat 1. Several first cutter holders 32 are arranged in parallel. The first cutter holder 32 is fixedly installed at the bottom of the first linkage rod 34. The first cutter holder 32 at one end of the first linkage rod 34 is fixedly connected to the first end plate 33. The first drive cylinder 35 is fixedly installed on the fixture seat 1. The piston rod end of the first drive cylinder 35 is connected to the transmission rod 351. The transmission rod 351 is fixedly installed on the first end plate 33. The second cutting module 4 is fixedly installed on the back of the fixture seat 1. The second cutting module 4 and the first cutting module 3 are symmetrically arranged on both sides of the fixture seat 1. The second cutting module 4 includes several parallel second blade holders 41, and the second blade holders 41 and the first blade holders 32 are arranged at intervals.

[0027] The structure and working principle of the second cutting module 4 are the same as those of the first cutting module 3, the main difference being the direction of movement. The first cutting module 3 and the second cutting module 4 are used to drive the cutter to cut the sprue material in opposite directions. The multiple cutter holders of a single cutting module are driven synchronously through linkage rods, and the linkage rods of the first cutting module 3 and the second cutting module 4 are staggered, which effectively simplifies the driving structure and improves the structural reliability.

[0028] The first cutting module 3 includes two parallel first drive cylinders 35. The transmission rods 351 of the two first drive cylinders 35 are arranged at intervals with the three slide rails 12 on the back of the fixture seat 1, which effectively ensures the smooth movement of the first end plate 33 and the first tool holder 32.

[0029] Working principle: After the injection molded part is demolded, it is placed on the fixture 2 of the fixture seat 1 for sprue cutting. The fixture 2 positions the injection molded part through the contour positioning block 21, and the sprue on the injection molded part extends into the sprue hole. Then, the first cutter post 32 of the first cutting module 3 and the second cutter post 41 of the second cutting module 4 on the back of the fixture seat 1 move synchronously towards each other, so that the sprue material of several injection molded parts on the fixture 2 is cut off synchronously. The cutting quality and cutting efficiency of the injection molded part sprue material are high, effectively solving the problems of unstable cutting quality and safety hazards in the existing sprue cutting process of injection molded parts. Taking the first cutting module 3 as an example, when the cutter 31 on the first cutter post 32 of the first cutting module 3 cuts the sprue, the first cutter post 32 drives the cutter 31 to slide horizontally in the cutter limiting hole 211, so that the cutter 31 cuts the connection between the sprue material and the injection molded part itself, and the sprue material falls from the sprue hole, which facilitates the reuse of the sprue cutting device. Example 2

[0030] Based on the above embodiments, this embodiment further improves upon the following technical solution: the transmission rod 351 is a threaded rod, and the transmission rod 351 is threadedly connected to the first end plate 33.

[0031] After the transmission rod 351 is fixed to the first end plate 33, its end is connected to the piston rod of the first drive cylinder 35, so that the length of the transmission rod 351 extending out of the first end plate 33 can be adjusted. That is, the distance between the first end plate 33 and the first drive cylinder 35 can be adjusted. Thus, when different injection molded parts are cut for gates, the positions of the first end plate 33 and the cutter 31 can be adjusted according to the different gate positions, thereby improving the versatility of the device. Example 3

[0032] This embodiment further improves upon the above embodiment by providing the following technical solution: The first tool holder 32 includes a tool mounting plate 321 and an edge connecting block 322. The tool mounting plate 321 is slidably connected to the material discharge hole 11, and the cutter 31 is fixedly mounted on the tool mounting plate 321. The edge connecting block 322 is slidably connected to the slide rail 12, which is fixedly mounted on the back of the fixture seat 1. One end of the edge connecting block 322 is fixedly mounted on the tool mounting plate 321. A linkage block 323 is provided between two adjacent tool mounting plates 321. The end of the linkage block 323 is fixedly mounted on the tool mounting plate 321, and the linkage block 323 is also slidably connected to the slide rail 12. The first tool holder 32 adopts a modular structure, and the tool mounting plate 321, the edge connecting block 322, and the linkage block 323 are connected by bolts, allowing the first tool holder 32 to flexibly adjust and replace the tool mounting plate 321 according to the sprue requirements of different injection molded parts.

[0033] The first tool holder 32 achieves smooth movement by sliding on the slide rail 12, ensuring the quality of the cutter 31. On the other hand, the tool mounting plate 321 of the first tool holder 32 slides in the discharge hole 11, further restricting the smooth movement of the first tool holder 32 by utilizing the fixture seat 1. Example 4

[0034] This embodiment further improves upon the above embodiment by providing the following technical solution: The tool mounting plate 321 is provided with a plurality of first threaded holes 3211 arranged in an array. The cutter 31 is fixedly mounted on the tool mounting plate 321 by a first bolt, which passes through the cutter 31 and is threaded into the first threaded hole 3211. Alternatively, the cutter 31 is provided with a first oblong hole 311, through which the first bolt passes.

[0035] The cutter 31 can be detachably installed by bolts and cutter mounting plate 321, making it easy to replace and adjust the cutter 31. At the same time, the height of the cutter 31 can be flexibly adjusted by the first oblong hole 311, effectively ensuring that the cutting height of the cutter 31 is adapted to the injection molded part. Example 5

[0036] Based on the above embodiments, this embodiment further improves upon the following technical solution: a second oblong hole 341 is provided on the first linkage rod 34, and the second bolt passes through the second oblong hole 341 and is threaded onto the first tool holder 32.

[0037] The second oblong hole 341 of the first linkage rod 34 allows the distance between two adjacent first tool holders 32 to be flexibly adjusted so that the cutters 31 on different first tool holders 32 can cut the sprue synchronously.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic sprue cutting apparatus for injection molded parts, characterized by, The utility model provides a cutting device for metal plate, which comprises a jig seat, a plurality of blanking holes arranged in an array on the jig seat, a jig fixedly installed on the surface of the jig seat, one jig corresponding to one blanking hole, a profiling positioning block provided on the jig, a nozzle hole provided on the profiling positioning block, a cutter limiting hole provided on one side of the nozzle hole, the cutter limiting hole being communicated with the nozzle hole, a first cutting module fixedly installed on the back of the jig seat, the first cutting module comprising a cutter, a first cutter holder, a first end plate, a first linkage rod and a first driving cylinder, the cutter being provided in the cutter limiting hole, the cutter being fixedly installed on the first cutter holder, the first cutter holder being slidingly connected to the jig seat, a plurality of the first cutter holders being arranged in parallel, the first cutter holder being fixedly installed on the bottom of the first linkage rod, the first cutter holder at one end of the first linkage rod being fixedly connected to the first end plate, the first driving cylinder being fixedly installed on the jig seat, a transmission rod being connected to the piston rod end of the first driving cylinder, the transmission rod being fixedly installed on the first end plate, a second cutting module fixedly installed on the back of the jig seat, the second cutting module and the first cutting module being symmetrically arranged on both sides of the jig seat, the second cutting module comprising a plurality of second cutter holders arranged in parallel, the second cutter holders being arranged at intervals with the first cutter holders. The transmission rod is a threaded rod, and the transmission rod is threadedly connected to the first end plate. The first cutter holder comprises a cutter mounting plate and an edge connecting block, the cutter mounting plate being slidingly connected to the blanking hole, the edge connecting block being slidingly connected to a sliding rail, one end of the edge connecting block being fixedly installed on the cutter mounting plate, a linkage block being arranged between adjacent two cutter mounting plates, and the linkage block being fixedly installed at the end of the cutter mounting plate. A plurality of first threaded holes are arranged in an array on the cutter mounting plate, the cutter being fixedly installed on the cutter mounting plate by first bolts, and the first bolts being threadedly connected to the first threaded holes after penetrating through the cutter. A first waist-shaped hole is arranged on the cutter, and the first bolts are provided in the first waist-shaped hole.

2. The automatic sprue cutting device for injection molded parts according to claim 1, characterized in that The first cutting module comprises two first driving cylinders arranged in parallel.

3. The automatic sprue cutting device for injection molded parts according to claim 1, wherein A second waist-shaped hole is arranged on the first linkage rod, and a second bolt is threadedly connected to the first cutter holder after penetrating through the second waist-shaped hole.

4. The automatic sprue cutting device for injection molded parts according to claim 3, wherein ​ 5. The automatic sprue cutting apparatus for injection molded parts according to claim 4, wherein ​ 6. The automatic sprue cutting apparatus for injection molded parts of claim 1, wherein, ​ 7. The automatic sprue cutting apparatus for injection molded parts of claim 1, wherein, ​

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