Shearing equipment for glue inlet of injection molded part

Abstract

The utility model discloses glue inlet shearing equipment for injection molding parts, which belongs to the technical field of injection molding equipment and comprises a module, a mold cavity is arranged on one side of the module, a feeding hole is arranged on one side of the module far away from the mold cavity, the feeding hole is communicated with the mold cavity, an installation groove is arranged in the module, a through groove is arranged on the inner wall of the top end of the installation groove, and the through groove is communicated with the mold cavity. The through groove communicates with the feeding hole, a cutter is slidably installed in the through groove, a lifting assembly is arranged at the bottom of the cutter, and a movable groove is formed in the inner wall of the side, away from the mold cavity, of the through groove. Through the arrangement of the lifting assembly, the effect of driving the cutter to reciprocate is achieved, the effect of shearing the colloid is achieved, through the arrangement of the blocking assembly, the effect of blocking the port of the through groove is achieved, the colloid can be prevented from entering the port, and the tangent plane of the end of the blocking block is matched with the tangent plane of the cutter, so that the colloid is prevented from entering the port. And the effect of removing colloid on the surface of the cutter can be achieved, and the use effect of the cutter can be kept.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and more specifically, to an injection gate shearing device for injection molded parts. Background Technology

[0002] Injection molding is a method of industrial product manufacturing. Products are typically produced using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. An injection molding machine, also known as an injection press or injection molding machine, is the main molding equipment used to create various shapes of plastic products from thermoplastic or thermosetting materials using plastic molds. Injection molding is achieved through an injection molding machine and a mold. Injection gate shearing refers to cutting off the plastic flow at the gate before the plastic enters the mold, causing it to reach a certain pressure and temperature state. This process can effectively control the flow rate and temperature of the plastic, thereby ensuring the quality and stability of the injection molding process.

[0003] Existing injection molding part gate shearing devices use a cutter to cut the molten material. However, some existing cutter tips are smaller than the lower section. When the cutter repeatedly moves up and down, due to the high viscosity of the molten material, some of it may adhere to the sidewall of the cutter tip and enter the cutter's moving hole. When the equipment is not in use, the gap between the cutter tip and the moving hole may become filled with solidified molten material, affecting the equipment's subsequent use. Therefore, to solve the above problems, we propose an injection molding part gate shearing device. Utility Model Content

[0004] To solve the above problems, this utility model provides a gate shearing device for injection molded parts, adopting the following technical solution:

[0005] A gate shearing device for injection molded parts includes a module. A mold cavity is formed on one side of the module, and a feed hole is formed on the side of the module away from the mold cavity, with the feed hole communicating with the mold cavity. An installation groove is formed inside the module, and a through groove is formed on the inner wall of the top of the installation groove, communicating with the feed hole. A cutter is slidably installed in the through groove, and a lifting assembly is provided at the bottom of the cutter. A movable groove is formed on the inner wall of the through groove away from the mold cavity, and a sealing assembly is provided in the movable groove.

[0006] By adopting the above technical solution, when the equipment is in use, the colloid flows in the feed hole, and then the cutting blade is driven to move by the lifting component, so that the cutting blade enters the feed hole through the through groove, which can play the role of shearing the colloid. By adjusting the speed of the lifting component, the shearing speed of the cutting blade can be adjusted, thereby changing certain properties of the colloid. When the cutting blade slides in the through groove, the cutting blade pushes the sealing component to slide in the movable groove. When the cutting blade descends into the installation groove, the sealing component can block the through groove port, which helps to prevent the colloid from entering the through groove. The inner wall of the through groove is in contact with the cutting blade. When the cutting blade descends, the through groove can scrape off the colloid on the side wall of the cutting blade. At the same time, the sealing component can also clean the side wall of the cutting blade, which helps to prevent the cutting blade from sticking to the colloid, thereby affecting subsequent sliding.

[0007] Furthermore, the lifting assembly includes a mounting plate disposed at the bottom of the cutter, a threaded tube fixedly mounted at the bottom of the mounting plate, a screw rotatably mounted on the inner wall of the bottom end of the mounting groove, the threaded tube sleeved on the side wall of the screw, a driven gear fixedly sleeved on the lower section side wall of the screw, a reduction motor fixedly mounted on the inner wall of the bottom end of the mounting groove, a drive gear fixedly sleeved on the side wall of the output shaft of the reduction motor, the drive gear and the driven gear meshing, inlet and outlet slots matching the screw are opened inside the cutter and inside the mounting plate, and a fixing assembly is provided between the cutter and the mounting plate.

[0008] By adopting the above technical solution, when it is necessary to cut the colloid, the drive gear is driven by the geared motor to rotate, the drive gear drives the driven gear to rotate, the driven gear drives the screw to rotate, and the screw drives the threaded tube to rise and fall. The threaded tube carries the mounting plate and the cutter to rise synchronously, so that the cutter enters the feed hole through the through groove, which can play the role of cutting the colloid. Then, the geared motor rotates in the opposite direction to drive the cutter. When the cutter falls, the inner wall of the through groove can scrape off the colloid on the side wall of the cutter, achieving the effect of cleaning the cutter. The cutter and the mounting plate are fixed by a fixing component, which is convenient for the staff to disassemble later.

[0009] Furthermore, two symmetrically distributed stabilizing blocks are fixedly installed on the lower side wall of the threaded pipe, and the inner wall of the mounting groove is provided with a groove that matches the stabilizing block on the same side.

[0010] By adopting the above technical solution, when the screw drives the threaded tube to move, the threaded tube slides in the groove on the same side with the stabilizing block. The cooperation between the stabilizing block and the groove helps to prevent the threaded tube from rotating synchronously with the screw, which helps to maintain the stability of the threaded tube's lifting and lowering, and also plays a role in restricting the threaded tube, which helps to prevent the threaded tube from detaching from the screw.

[0011] Furthermore, the fixing component includes connecting plates disposed on both sides of the lower section of the cutter. The bottom of the mounting plate is provided with two sets of symmetrically distributed bolts, each set consisting of two bolts. The top of each bolt penetrates through the mounting plate, and the bottom ends of the two connecting plates are provided with threaded grooves that match the bolts in the same set.

[0012] By adopting the above technical solution, when it is necessary to install the cutter, the worker places the bottom end of the cutter on the top of the mounting plate and makes the connecting plate installed on the side wall of the cutter fit against the top of the mounting plate. Then, the cutter is fixed by screwing through the screw grooves opened at the bottom of the mounting plate and the connecting plate with bolts.

[0013] Furthermore, each of the two connecting plates has a plug fixedly installed at its bottom end, and the top of the mounting plate has a slot that matches the plug.

[0014] By adopting the above technical solution, the workers place the cutter on the mounting plate, so that the plug installed at the bottom of the connecting plate engages with the slot opened at the top of the mounting plate. The engagement of the plug and the slot serves to position and stabilize the cutter, facilitating subsequent installation.

[0015] Furthermore, the sealing assembly includes a sealing block slidably installed in the movable groove. A spring is fixedly connected between the inner wall of the sealing block on the side away from the mold cavity and the side opposite to the movable groove. An inclined surface matching the end of the cutter is opened at the end of the sealing block away from the spring.

[0016] By adopting the above technical solution, when the cutter rises within the through groove, it pushes the sealing block to slide into the movable groove, and the sealing block pushes the spring to contract. When the cutter descends, the sealing block returns to its original position under the elastic force of the spring. As the cutter continues to descend, the end of the sealing block slides against the side opposite to the cutter. The sealing block can clean the sidewall colloid. When the cutter moves into the installation groove, the sealing block blocks the through groove port, thus sealing the through groove and helping to prevent colloid from entering the through groove, facilitating the continued use of the equipment.

[0017] Furthermore, sliders are fixedly installed on both sides of the sealing block near the spring end, and the inner wall of the movable groove is provided with a groove that matches the slider on the same side.

[0018] By adopting the above technical solution, when the sealing block slides in the movable groove, the sealing block, along with the slider, slides in the same side groove. The cooperation between the slider and the groove helps to maintain the stability of the sealing block's sliding and helps to prevent the sealing block from detaching from the movable groove.

[0019] In summary, this utility model has the following beneficial technical effects:

[0020] (1) In this utility model, the lifting component is used to drive the cutter to reciprocate, thereby achieving the effect of cutting the colloid. The sealing component is used to seal the port of the through groove, which helps to prevent the colloid from entering the port. The through groove fits the side wall of the cutter. When the cutter enters the installation groove, the side wall of the through groove can scrape off the colloid from the side wall of the cutter. The end face of the sealing block matches the cutter face, which can remove the colloid from the surface of the cutter, thus helping to maintain the effectiveness of the cutter.

[0021] (2) In this utility model, the cutter and the mounting plate are fixed by bolts, which makes it easy for workers to disassemble and replace them later. The bottom of the connecting plate is provided with a plug, which engages with the slot opened on the top of the mounting plate to position and stabilize the cutter, making it easy to install later. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This utility model Figure 2 Enlarged view of A in the middle;

[0025] Figure 4 This utility model Figure 2 Enlarged view of B in the middle;

[0026] Figure 5 This is a diagram illustrating the lifting and fixing components of this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Module; 2. Mold cavity; 3. Feed hole; 4. Mounting slot; 5. Cutter; 6. Mounting plate; 7. Threaded tube; 8. Gear motor; 9. Drive gear; 10. Driven gear; 11. Screw; 12. Spring; 13. Movable slot; 14. Sealing block; 15. Connecting plate; 16. Insert block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0033] Please see Figure 1-5 A gate shearing device for injection molded parts includes a module 1. A mold cavity 2 is provided on one side of the module 1, and a feed hole 3 is provided on the side of the module 1 away from the mold cavity 2, and the feed hole 3 communicates with the mold cavity 2. An installation groove 4 is provided inside the module 1. A through groove is provided on the inner wall of the top of the installation groove 4, and the through groove communicates with the feed hole 3. A cutter 5 is slidably installed in the through groove. A lifting assembly is provided at the bottom of the cutter 5. The lifting assembly includes an installation plate 6 set at the bottom of the cutter 5. A threaded tube 7 is fixedly installed at the bottom of the installation plate 6. A screw 11 is rotatably installed on the inner wall of the bottom end of the installation groove 4. The threaded tube 7 is sleeved on the side wall of the screw 11. A driven gear 10 is fixedly sleeved on the lower side wall of the screw 11. A reduction motor 8 is fixedly installed on the inner wall of the bottom end of the installation groove 4. A drive gear 9 is fixedly sleeved on the side wall of the output shaft of the reduction motor 8. The drive gear 9 and the driven gear 10 mesh. Inlet and outlet grooves matching the screw 11 are provided inside the cutter 5 and inside the installation plate 6.

[0034] When the equipment is in use, the colloid flows in the feed hole 3. When it is necessary to cut the colloid, the drive gear 9 is driven to rotate by the reduction motor 8. The drive gear 9 drives the driven gear 10 to rotate, and the driven gear 10 drives the screw 11 to rotate. The screw 11 drives the threaded tube 7 to rise and fall. The threaded tube 7 carries the mounting plate 6 and the cutter 5 to rise synchronously, so that the cutter 5 enters the feed hole 3 through the through groove, which can play the role of cutting the colloid. Then, the reduction motor 8 rotates in the opposite direction, which can play the role of driving the cutter 5. When the cutter 5 falls, the inner wall of the through groove can scrape off the colloid on the side wall of the cutter 5, achieving the effect of cleaning the cutter 5.

[0035] Two symmetrically distributed stabilizing blocks are fixedly installed on the lower side wall of the threaded tube 7. The inner wall of the mounting groove 4 is provided with a groove that matches the stabilizing block on the same side. When the screw 11 drives the threaded tube 7 to move, the threaded tube 7 slides in the groove on the same side with the stabilizing block. The cooperation between the stabilizing block and the groove helps to prevent the threaded tube 7 from rotating synchronously with the screw 11, which helps to maintain the stability of the threaded tube 7 in raising and lowering, and also plays a role in limiting the threaded tube 7, which helps to prevent the threaded tube 7 from detaching from the screw 11.

[0036] A fixing assembly is provided between the cutter 5 and the mounting plate 6. The fixing assembly includes connecting plates 15 located on both sides of the lower section of the cutter 5. The bottom of the mounting plate 6 has two sets of symmetrically distributed bolts, with the top of each bolt penetrating the mounting plate 6. The bottom ends of the two connecting plates 15 have threaded grooves that match the bolts in the same set. Insert blocks 16 are fixedly installed at the bottom ends of the two connecting plates 15. The top of the mounting plate 6 has slots that match the insert blocks 16. When the cutter 5 needs to be installed, the operator places the bottom end of the cutter 5 on the top of the mounting plate 6, and makes the connecting plates 15 installed on the side wall of the cutter 5 fit against the top of the mounting plate 6. The insert blocks 16 installed at the bottom end of the connecting plates 15 engage with the slots opened at the top of the mounting plate 6. The engagement of the insert blocks 16 and the slots serves to position and stabilize the cutter 5. Then, the bolts are screwed through the mounting plate 6 and into the threaded grooves opened at the bottom of the connecting plates 15 to fix the cutter 5.

[0037] A movable groove 13 is formed on the inner wall of the through groove away from the mold cavity 2. A sealing assembly is provided in the movable groove 13. The sealing assembly includes a sealing block 14 slidably installed in the movable groove 13. A spring 12 is fixedly connected between the inner wall of the sealing block 14 away from the mold cavity 2 and the inner wall opposite to the movable groove 13. An inclined surface matching the end of the sealing block 14 away from the spring 12 is formed. When the cutter 5 rises in the through groove, the cutter 5 pushes the sealing block 14 to slide into the movable groove 13. Furthermore, the sealing block 14 pushes the spring 12 to contract. When the cutter 5 descends, the sealing block 14 returns to its original position under the elastic force of the spring 12. As the cutter 5 continues to descend, the end of the sealing block 14 slides against the side opposite to the cutter 5. The sealing block 14 can clean the side wall colloid. When the cutter 5 moves into the mounting groove 4, the sealing block 14 blocks the groove port, thus sealing the groove and helping to prevent colloid from entering the groove, facilitating the continued use of the equipment.

[0038] The blocking block 14 has sliders fixedly installed on both sides of the end near the spring 12. The inner wall of the movable groove 13 has a sliding groove that matches the slider on the same side. When the blocking block 14 slides in the movable groove 13, the blocking block 14 slides in the sliding groove on the same side with the slider. The cooperation between the slider and the sliding groove helps to maintain the stability of the sliding of the blocking block 14 and helps to prevent the blocking block 14 from falling out of the movable groove 13.

[0039] The implementation principle of this utility model embodiment is as follows: When the device is in use, the colloid flows in the feed hole 3. Then, the cutting blade 5 is driven to move by the lifting component, so that the cutting blade 5 enters the feed hole 3 through the through groove, which can play the role of cutting the colloid. By adjusting the speed of the lifting component, the cutting speed of the cutting blade 5 can be adjusted, thereby changing some properties of the colloid. When the cutting blade 5 slides in the through groove, the cutting blade 5 pushes the sealing component to slide in the movable groove 13. When the cutting blade 5 descends into the mounting groove 4, the sealing component can block the through groove port, which helps to prevent the colloid from entering the through groove. The inner wall of the through groove is in contact with the cutting blade 5. When the cutting blade 5 descends, the through groove can scrape off the colloid on the side wall of the cutting blade 5. At the same time, the sealing component can clean the side wall of the cutting blade 5, which helps to prevent the cutting blade 5 from sticking to the colloid, thereby affecting subsequent sliding.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A gate shear apparatus for injection molded parts, comprising a module (1), characterized in that: The module (1) is provided with a mold cavity (2) on one side, the module (1) is provided with a feeding hole (3) away from the mold cavity (2) side, and the feeding hole (3) is communicated with the mold cavity (2), the module (1) is provided with an installation groove (4), the top end of the installation groove (4) is provided with a through groove, the through groove is communicated with the feeding hole (3), the cutting knife (5) is slidably installed in the through groove, the bottom of the cutting knife (5) is provided with a lifting assembly, the through groove is provided with a movable groove (13) on the inner wall away from the mold cavity (2) side, and the movable groove (13) is provided with a plugging assembly.

2. A gate shear apparatus for injection molded parts as defined in claim 1, wherein: The lifting assembly comprises an installation plate (6) arranged at the bottom of the cutting knife (5), a threaded pipe (7) fixedly installed at the bottom of the installation plate (6), a screw rod (11) rotatably installed at the bottom end of the installation groove (4), the threaded pipe (7) is sleeved on the side wall of the screw rod (11), a driven gear (10) fixedly sleeved on the lower side wall of the screw rod (11), a speed reducer motor (8) fixedly installed at the bottom end of the installation groove (4), a driving gear (9) fixedly sleeved on the side wall of the output shaft of the speed reducer motor (8), the driving gear (9) and the driven gear (10) are engaged, and the cutting knife (5) and the installation plate (6) are both provided with an inlet and outlet groove matched with the screw rod (11).

3. A gate shear apparatus for injection molded parts as defined in claim 2, wherein: The lower side wall of the threaded pipe (7) is fixedly installed with two symmetrically distributed stable blocks, and the inner wall of the installation groove (4) is provided with a groove matched with the stable block on the same side.

4. A gate shear apparatus for injection molded parts as defined in claim 2, wherein: The fixing assembly comprises a connecting plate (15) arranged at the lower side of the cutting knife (5), two groups of bolts symmetrically distributed on the bottom of the installation plate (6), the same group of bolts are two, the top end of the bolt penetrates the installation plate (6), and the bottom end of the two connecting plates (15) is provided with a screw groove matched with the same group of bolts.

5. A gate shear apparatus for injection molded parts as defined in claim 4, wherein: The bottom end of the two connecting plates (15) is fixedly installed with an insertion block (16), and the top end of the installation plate (6) is provided with an insertion groove matched with the insertion block (16).

6. A gate shear apparatus for injection molded parts as defined in claim 1, wherein: The plugging assembly comprises a plugging block (14) slidably installed in the movable groove (13), a spring (12) fixedly connected between the inner wall of the side of the plugging block (14) away from the mold cavity (2) and the side of the movable groove (13) opposite to the side, and an inclined surface matched with the end of the cutting knife (5) is formed on the end of the plugging block (14) away from the spring (12).

7. A gate shear apparatus for injection molded parts as defined in claim 6, wherein: The sliding block is fixedly installed on both sides of the end of the plugging block (14) close to the spring (12), and the inner wall of the movable groove (13) is provided with a sliding groove matched with the sliding block on the same side.

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