Product Sprue Separation and Sorting Equipment for Injection Molded Parts and Its Method for Adjusting the Gap of the Discharge Opening

Abstract

The present invention discloses a product sprue separation and sorting device for injection molded parts and a method for adjusting the gap of the blanking port, which includes a separator driven by a power mechanism to rotate at high speed. The separator is provided with a feed port and a discharge port. The separator includes a cylinder body, a roller group, a linkage mechanism and a locking mechanism. A plurality of groups of roller groups distributed concentrically are inserted between the two cylinder bodies. The roller group includes a main roller and a secondary roller arranged side by side on a swing arm. A plurality of main rollers are synchronously connected through a linkage mechanism. The gap between adjacent two roller groups is the blanking port. The roller shaft of the main roller is driven to rotate manually or by a power unit. The rotation of the main roller drives the swing arm to swing, so as to adjust the gap between the secondary roller and the main roller of the adjacent group. After the gap is adjusted, the roller group is fixed by a locking mechanism. By the above method, the structure of the present invention is simple, which can automatically separate the injection molded product from the sprue and automatically screen, and can be applicable to products of different sizes without stopping the machine.

Description

Technical Field

[0001] The present invention relates to the technical field of separation, and in particular to a product sprue separation and sorting device for injection molded parts and a method for adjusting the gap of its blanking port. Background Art

[0002] During the production of injection molded products, the injection molded products need to pass through a runner in the mold before they can be formed. One half is the product and the other half is the runner. The molded product formed after the runner cools is called a sprue, also commonly known as a sprue or a sprue bar. The last step of injection molded products is to remove the excess sprue. In the prior art, it usually requires manual assistance with tools for trimming, which is very labor-consuming and has low work efficiency. Or, direct design on the injection mold is selected to enable automatic separation during demolding. However, this requires multiple designs and simulations of the injection mold, which is costly and has low applicability.

[0003] Some injection molded product and sprue separators have gradually emerged on the market. The product with a sprue is placed in a container, and the container is driven to rotate and vibrate for separation. At this time, the separated products and sprues are in one container and need to be sorted. Chinese Patent No. CN202220154215.9 discloses a product sprue separator, which drives a cage to rotate through a cage rotation mechanism, separates the product from the waste sprue through the rotating cage, and tilts the cage through a lifting mechanism to discharge the product. After the product and sprue are separated, it is necessary to pause the rotation mechanism and the lifting mechanism lifts the cage, affecting the production rhythm. In addition, in order to match products of different sizes, the gap width of the cage is adjusted in this patent. Specifically, the slider on the rod body is moved along the annular track of the cylinder body. After moving in place, the fixing screw on the slider is tightened to fix the slider on the cylinder body. The sprue falls from the gap between two adjacent rod bodies. As can be seen from the attached Figure 2 It can be known that there are dozens of rod bodies arranged on the cage. Manually adjusting the installation of the rod bodies one by one is relatively slow, and it is necessary to adjust the gap multiple times to achieve the optimal gap for waste blanking. It is difficult for manual labor to ensure the gap between two adjacent rod bodies, and the human factor is too large. In addition, during the separation process, the rod bodies are fixed on the cylinder body, and the products are likely to hit the rod bodies during rotation, causing product deformation or even damage.

[0004] For injection molded parts with multiple cavities in one mold, the separated products are relatively small, and the material tape needs to connect several injection molded products, but the material tape is relatively large and it is difficult to fall from the gap.

[0005] Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a product sprue separation and sorting device for injection molded parts. Summary of the Invention

[0006] The main technical problem to be solved by the present invention is to provide a product sprue separation and sorting device for injection molded parts and its method for adjusting the gap of the blanking port, to solve the problem of cumbersome gap adjustment to adapt to products of different sizes, to solve the screening problem of products and sprues after separation, and to solve the problem of product breakage during the separation process.

[0007] To solve the above technical problems, a technical solution adopted by the present invention is: to provide a product sprue separation and sorting device for injection molded parts, including a separator driven by a power mechanism to rotate at high speed. The separator is provided with a feed port and a discharge port. Its characteristics are: the separator includes a cylinder body, a roller group, a linkage mechanism and a locking mechanism. A number of groups of concentrically distributed roller groups are inserted between the two cylinder bodies. The roller group includes a main roller and a secondary roller arranged side by side on a swing arm. A number of main rollers are rotatably installed on the two cylinder bodies, and a number of main rollers are synchronously connected through a linkage mechanism. The gap between adjacent two roller groups is the blanking port. The roller shaft of the main roller is driven to rotate by a manual or power unit. The rotation of the main roller drives the swing arm to swing, thereby adjusting the gap between the secondary roller and the adjacent group of main rollers, that is, adjusting the gap of the blanking port. After the gap is adjusted, the roller group is fixed by a locking mechanism.

[0008] Preferably, the linkage mechanism includes gears and chains. Gears are installed on the roller shafts of a number of groups of main rollers, and a number of groups of gears are connected by chains.

[0009] Preferably, the locking mechanism includes an adjusting gear, a fixing block, a limit pin and a locking nut. An arc-shaped waist hole is provided on one side of the cylinder body. The roller shaft of one of the secondary rollers passes through the arc-shaped waist hole. An adjusting gear meshing with the chain is installed on the roller shaft of the secondary roller. A fixing block is also installed at the outer end of the cylinder body. An arc-shaped waist hole passing through the roller shaft of the secondary roller is provided on the fixing block. One end of the roller shaft of the secondary roller passing through the fixing block is locked and fixed by a locking nut. A limit pin is inserted between the roller shaft of the secondary roller and the fixing block.

[0010] Preferably, the power unit adopts a micro motor, and the micro motor drives the rotation of the roller shaft of the main roller.

[0011] Preferably, the separator is inclined, and the inclination angle can be adjusted.

[0012] Preferably, the separator is arranged on a mounting plate. The mounting plate is inclined and installed on an adjusting screw. A waist-shaped hole is provided on the mounting plate. The vertically arranged adjusting screw passes through the waist-shaped hole, and adjusting nuts are spirally connected to the adjusting screw above and below the waist-shaped hole.

[0013] Preferably, the separator is driven to rotate by a power mechanism. The power mechanism includes a driving motor and a rotating wheel driven by the driving motor. The cylinder body is tightly pressed on the rotating wheel, and the rotation of the rotating wheel drives the separator to rotate through friction.

[0014] Preferably, the power mechanism also includes a guide and limiting mechanism, which includes a guide roller and a limiting roller. The lower ends of the two cylinders are symmetrically clamped on the two guide rollers. An annular groove is provided on the outer side surfaces of the two cylinders. The limiting roller is clamped in the annular groove. The guide roller and the limiting roller are respectively inserted into the roller seat.

[0015] Preferably, the feed port of the separator is docked with an elevator, the lower end of the elevator is docked with a belt line, the discharge port of the separator is docked with a waste box, the lower part of the drop port of the separator is docked with a product box, and protective covers are also installed at the feed port and discharge port of the separator.

[0016] A method for adjusting the gap between blanking openings of a product head separation and sorting device for injection molded parts, characterized in that it comprises the following steps:

[0017] S1. Gap adjustment: rotate a group of rollers. The main roller rotates to drive the swing arm to swing. The auxiliary roller rotates around the main roller. The auxiliary roller is away from the main roller of the adjacent group. Adjust the gap between the auxiliary roller and the main roller of the adjacent group, that is, the gap of the blanking port.

[0018] S2, synchronous adjustment, several groups of roller groups are connected by linkage mechanism, the main rollers of the roller groups are synchronously connected by gears and chains, and rotate synchronously, the roller shaft of one group of main rollers rotates, the gears on the roller shaft rotate to drive the chain transmission, and the main rollers of other groups will rotate together;

[0019] S3. The gap is fixed. A set of rollers are locked and fixed to the cylinder body through a locking mechanism to ensure the size of the gap at the blanking port. After the position of the auxiliary roller is determined, the limit pin passes through the roller shaft and the fixed block of the auxiliary roller. The roller shaft of the auxiliary roller passes through one end of the fixed block and is locked and fixed by a locking nut.

[0020] Preferably, in step S1, the rotation of a group of rollers is driven manually or by a power unit, wherein the manual operation specifically includes: manually lifting the auxiliary roller, and the auxiliary roller drives the main roller of the same group to rotate; the power unit drive includes: a micro motor drives the roller shaft of the main roller to rotate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The product and the material head are separated by the rotating separator. The separated product falls into the product box from the drop opening between the adjacent roller groups. The material head slides down to the waste box along the inclined separator under the action of gravity. The product and the material head are automatically screened. Separation and screening are carried out simultaneously without stopping the machine, which is highly efficient.

[0023] The gap of the product drop opening can be adjusted by manually or with a power unit to adjust the lifting range of the auxiliary roller. It is suitable for products of different sizes and specifications. Multiple roller groups can be adjusted synchronously, which is easy to operate.

[0024] The drum surfaces of the main drum and the auxiliary drum can rotate and are in rolling contact with the product during the rotary separation process, which can reduce the hard contact with the product and reduce the damage to the product.

[0025] The placement angle of the separator is adjusted by the adjusting nut on the adjusting screw to ensure sufficient separation time. The material head can fall smoothly into the waste bin without bringing unseparated products, and the blanking angle is adjusted according to different products to adapt to it. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a product material head separation and sorting device for injection molded parts.

[0027] Figure 2 It is a schematic internal structure diagram of a product material head separation and sorting device for injection molded parts.

[0028] Figure 3 It is a schematic partial structure diagram of the separator of a product material head separation and sorting device for injection molded parts.

[0029] Figure 4 It is a partial structure side view of a product material head separation and sorting device for injection molded parts.

[0030] Among them, 1. Frame;

[0031] 2. Mounting plate, 20. Kidney-shaped hole, 21. Adjusting screw, 22. Adjusting nut;

[0032] 3. Separator, 300. Blanking port, 301. Feeding port, 302. Discharging port, 31. Cylinder body, 310. Annular groove, 311. Arc-shaped kidney-shaped hole, 32. Drum group, 321. Main drum, 322. Auxiliary drum, 323. Swing arm, 33. Linkage mechanism, 331. Gear, 332. Chain, 34. Locking mechanism, 341. Adjusting gear, 342. Fixed block, 343. Limit pin, 344. Locking nut;

[0033] 4. Power mechanism, 41. Driving motor, 42. Rotating wheel, 43. Guide and limit mechanism, 431. Guide roller, 432. Limit roller; Auxiliary drum

[0034] 5. Product box; 6. Waste bin; 7. Hoist; 8. Belt conveyor; 9. Protective cover. Detailed Embodiment

[0035] The following describes the preferred embodiments of the present invention in detail with reference to the drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0036] Please refer to Figures 1 to 4, embodiments of the present invention include:

[0037] A product sprue separation and sorting device for injection molded parts. This product sprue separation and sorting device for injection molded parts includes a frame 1, a mounting plate 2, a separator 3, a power mechanism 4, a product box 5, a waste box 6, a hoist 7, a belt line 8, and a shield 9.

[0038] The mounting plate 2 is fixed on the frame 1, and the separator 3 is mounted on the mounting plate 2. The separator 3 is driven by the power mechanism 4 to rotate at high speed. The product box 5 is arranged in a butt joint manner at the material dropping port 300 below the separator 3, and the waste box 6 is arranged in a butt joint manner at the discharge port 302 of the separator 3. The mounting plate 2 is inclined to ensure that the separated sprue slides into the waste box 6. The separator 3 includes a cylinder body 31, a roller group 32, a linkage mechanism 33, and a locking mechanism 34. A number of groups of roller groups 32 distributed concentrically are inserted between the two cylinder bodies 31. The roller group 32 includes a main roller 321 and a secondary roller 322 arranged side by side on a swing arm 323. A number of main rollers 321 are rotatably installed on the two cylinder bodies 31, and a number of main rollers 321 are synchronously connected through the linkage mechanism 33. The gap between adjacent two roller groups 32 is the material dropping port 300. The roller shaft of the main roller 321 is driven to rotate by a manual or power unit. The rotation of the main roller 321 drives the swing arm 323 to swing, thereby adjusting the gap between the secondary roller 322 and the adjacent main roller group, that is, adjusting the gap of the material dropping port 300. Relative to the main roller 321, a number of secondary rollers 322 are distributed on a concentric arc with a variable diameter. After the gap is adjusted, the roller group 32 is fixed by the locking mechanism 34. The main roller 321 and the secondary roller 322 can rotate and are in rolling contact with the product during the rotary separation process, which can reduce the hard contact with the product and reduce damage to the product.

[0039] The linkage mechanism 33 includes a gear 331 and a chain 332. Gears 331 are installed on the roller shafts of a number of groups of main rollers 321, and a number of groups of gears 331 are connected by a chain 332. When the roller shaft of a group of main rollers 321 rotates, the other groups of main rollers will rotate together.

[0040] The locking mechanism 34 includes an adjusting gear 341, a fixing block 342, a limit pin 343 and a locking nut 344. An arc-shaped waist-shaped hole 311 is provided on the cylinder body 31. The roller shaft of one pair of rollers 322 passes through the arc-shaped waist-shaped hole 311. An adjusting gear 341 meshing with the chain 332 is installed on the roller shaft of the secondary roller 322. A fixing block 342 is also installed at the outer end of the cylinder body 31. A limit pin 343 is inserted into the roller shaft of the secondary roller and the fixing block 342. Manually lift the secondary roller 322, and the secondary roller 322 drives the main roller 321 of the same group to rotate. Several groups of roller sets 32 are synchronously connected by gears 331 and chains 332. When one group of main rollers 321 rotates, other groups rotate together. The gap between the secondary roller 322 and the adjacent main roller is the gap of the product blanking port 300. The gap of the product blanking port 300 is adjusted by manually adjusting the lifting amplitude of the secondary roller 322. An arc-shaped waist-shaped hole passing through the roller shaft of the secondary roller 322 is provided on the fixing block 342. One end of the roller shaft of the secondary roller 322 passing through the fixing block 342 is locked and fixed by a locking nut 344 to limit the position of the secondary roller 322 at this time.

[0041] The power unit can adopt a micro motor. The micro motor drives the rotation of the roller shaft of the main roller 321. The micro motor can be installed on the cylinder body 31, which is not shown in the figure.

[0042] The separator 3 is inclined and the inclination angle can be adjusted. The separator 3 is arranged on the mounting plate 2. The mounting plate 2 is inclined and installed on the adjusting screw 21. A waist-shaped hole 20 is provided on the mounting plate 2. The vertically arranged adjusting screw 21 passes through the waist-shaped hole 20. Adjusting nuts 22 are spirally connected to the adjusting screw 21 above and below the waist-shaped hole 20. By rotating the adjusting nuts 22, the inclination angle of the mounting plate 2 is controlled, thereby adjusting the inclination angle of the separator 3 to ensure sufficient separation time, so that the material head can smoothly fall from the discharge port without carrying unseparated products, and the falling angle is adjusted according to different products.

[0043] The power mechanism 4 includes a driving motor 41 installed on the mounting plate 2 and a rotating wheel 42 driven by the driving motor 41 to rotate. The cylinder body 31 is tightly pressed on the rotating wheel 42. The rotation of the rotating wheel 42 drives the separator 3 to rotate through friction. The power mechanism 4 also includes a guiding and limiting mechanism 43. The guiding and limiting mechanism 43 includes a guiding roller 431 and a limiting roller 432. The lower ends of the two cylinder bodies 31 are symmetrically clamped on the two guiding rollers 431. Annular grooves 310 are provided on the outer side surfaces of the two cylinder bodies 31. The limiting rollers 432 are clamped at the annular grooves 310. The guiding roller 431 and the limiting roller 432 are respectively inserted into the roller seats. The limiting roller 432 travels along the annular groove 310 to play a guiding role and can also prevent the separator 3 from flying off the track due to too fast rotation speed.

[0044] The feed inlet 301 of the separator 3 is butt - connected with an elevator 7, and the lower end of the elevator 7 is butt - connected with a belt line 8. The belt line 8 can be arranged under the mold. When the injection mold is opened, the belt line 8 receives the material, reducing the time - consuming problem of the manipulator taking the material. A shield 9 is also installed at the feed inlet 301 and the discharge outlet 302 of the separator 3 to prevent the product and the sprue from flying away during the separation process.

[0045] A method for adjusting the gap of the blanking port of a product sprue separation and sorting device for injection - molded parts includes the following steps:

[0046] S1. Gap adjustment: Rotate a set of roller groups 32. The rotation of a set of roller groups 32 is driven manually or by a power unit. Specifically, manually: Manually lift the auxiliary roller 322, and the auxiliary roller 322 drives the main roller 321 in the same group to rotate; The power - unit drive is: A micro - motor drives the roller shaft of the main roller 321 to rotate. The rotation of the main roller 321 drives the swing arm 323 to swing, and the auxiliary roller 322 rotates around the main roller 321. The auxiliary roller 322 moves away from the main roller of the adjacent group to adjust the gap between the auxiliary roller and the main roller of the adjacent group, that is, the blanking - port gap.

[0047] S2. Synchronous adjustment: Several sets of roller groups 32 are connected by a linkage mechanism 33. The main rollers 321 of the roller groups 32 are synchronously connected through gears 331 and chains 332 for synchronous rotation. When the roller shaft of a set of main rollers 321 rotates, the gear 331 on the roller shaft rotates to drive the chain 332 to transmit, and the main rollers of other groups will rotate together.

[0048] S3. Gap fixation: A set of roller groups 32 is locked and fixed to the cylinder body 31 through a locking mechanism 34 to ensure the size of the blanking - port gap. After the position of the auxiliary roller 322 is determined, the limit pin 343 passes through the roller shaft of the auxiliary roller and the fixed block 342, and one end of the roller shaft of the auxiliary roller passing through the fixed block is locked and fixed by a locking nut.

[0049] When the product sprue separation and sorting device for injection - molded parts of the present invention works, the injection mold is opened, and the product with the strip falls onto the belt line 8. The product with the strip enters the separator 3 from the feed inlet 301 after passing through the belt line 8 and the elevator 7. The driving motor 41 drives the rotating wheel 42 to rotate, and the rotation of the rotating wheel 42 drives the separator 3 to rotate through friction. The product and the sprue are separated by the rotating separator 3. The separated product falls into the product box 5 from the blanking gap between adjacent roller groups 32. The sprue is relatively long and will not fall through the gap. The sprue slides down along the inclined separator 3 under the action of gravity and falls into the waste - material box 6.

[0050] The product sprue separation and sorting device for injection - molded parts of the present invention and its method for adjusting the gap of the blanking port can automatically separate the injection - molded product from the sprue and automatically screen, can be applicable to products of different sizes, and can continuously separate and screen without stopping the machine.

[0051] The above are only the embodiments of the present invention, and do not thus limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A product sprue separation and sorting device for injection molded parts, including a separator driven by a power mechanism to rotate at high speed, wherein a feed inlet and a discharge outlet are arranged on the separator, and it is characterized in that: The separator comprises a cylinder, a roller group, a linkage mechanism and a locking mechanism. A plurality of roller groups with concentric distribution are inserted between the two cylinders. The roller group comprises a main roller and an auxiliary roller mounted side by side on a swing arm. A plurality of main roller groups are rotatably mounted on the two cylinders. The plurality of main rollers are synchronously connected through a linkage mechanism. The gap between two adjacent roller groups is a blanking opening. The roller shaft of the main roller is driven to rotate manually or by a power unit. The rotation of the main roller drives the swing arm to swing, thereby adjusting the gap between the auxiliary roller and the adjacent group of main rollers, that is, adjusting the gap of the blanking opening. After the gap is adjusted, the roller group is fixed by a locking mechanism. The locking mechanism includes an adjusting gear, a fixing block, a limiting pin and a locking nut. The cylinder body on one side is provided with an arc-shaped waist hole, wherein the roller shaft of a secondary roller passes through the arc-shaped waist hole, and an adjusting gear meshing with a chain is installed on the roller shaft of the secondary roller. A fixing block is also installed on the outer end of the cylinder body, and an arc-shaped waist hole is provided on the fixing block for passing the roller shaft of the secondary roller. One end of the roller shaft of the secondary roller passes through the fixing block and is locked and fixed by a locking nut, and a limiting pin is inserted on the roller shaft of the secondary roller and the fixing block; The separator is tilted and the tilt angle is adjustable; the separator is arranged on a mounting plate, the mounting plate is tilted and mounted on an adjusting screw, a waist-shaped hole is arranged on the mounting plate, the vertically arranged adjusting screw passes through the waist-shaped hole, and adjusting nuts are spirally connected to the adjusting screws above and below the waist-shaped hole.

2. The product sprue separation and sorting equipment for injection molded parts according to claim 1, wherein: The linkage mechanism comprises gears and chains. Gears are installed on the roller shafts of several groups of main rollers, and several groups of gears are connected by chains.

3. The product sprue separation and sorting equipment for injection molded parts according to claim 1, characterized in that: The power unit adopts a micro motor, and the micro motor drives the roller shaft of the main roller to rotate.

4. The product sprue separation and sorting equipment for injection molded parts according to claim 1, characterized in that: The separator is driven to rotate by a power mechanism, which includes a driving motor and a rotating wheel driven to rotate by the driving motor. The cylinder is tightly pressed against the rotating wheel, and the rotating wheel rotates to drive the separator to rotate through friction.

5. The product sprue separation and sorting equipment for injection molded parts according to claim 1, characterized in that: It also includes a guide and limiting mechanism, which includes a guide roller and a limiting roller. The lower ends of the two cylinders are symmetrically clamped on the two guide rollers. The outer sides of the two cylinders are provided with annular grooves, and the limiting rollers are clamped in the annular grooves. The guide rollers and the limiting rollers are respectively inserted into the roller seats.

6. The product sprue separation and sorting equipment for injection molded parts according to claim 1, characterized in that: The feed port of the separator is docked with an elevator, the lower end of the elevator is docked with a belt line, the discharge port of the separator is docked with a waste box, the lower part of the drop port of the separator is docked with a product box, and the feed port and discharge port of the separator are also equipped with protective covers.

7. A method for adjusting the gap of the blanking port of the product sprue separation and sorting equipment for injection molded parts described in any one of claims 1-6, characterized in that: The following steps are involved: S1. Gap adjustment: rotate a group of rollers. The main roller rotates to drive the swing arm to swing. The auxiliary roller rotates around the main roller. The auxiliary roller is away from the main roller of the adjacent group. Adjust the gap between the auxiliary roller and the main roller of the adjacent group, that is, the gap of the blanking port. S2, synchronous adjustment, several groups of roller groups are connected by linkage mechanism, the main rollers of the roller groups are synchronously connected by gears and chains, and rotate synchronously, the roller shaft of one group of main rollers rotates, the gears on the roller shaft rotate to drive the chain transmission, and the main rollers of other groups will rotate together; S3. Gap fixation: A set of roller groups is attached and fixed to the cylinder body through a locking mechanism to ensure the size of the gap at the material discharge opening. After the position of the auxiliary roller is determined, the limit pin passes through the roller shaft of the auxiliary roller and the fixing block, and one end of the roller shaft of the auxiliary roller passing through the fixing block is attached and fixed by a locking nut.

8. The method for adjusting the gap of the blanking port of the product sprue separation and sorting equipment for injection molded parts according to claim 7, characterized in that: In step S1, the rotation of a set of roller groups is driven manually or by a power unit. Specifically, manually means: manually lifting the auxiliary roller, and the auxiliary roller drives the main roller in the same group to rotate; the power unit drive is: a micro motor drives the rotation of the roller shaft of the main roller.

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