Automatic shearing mechanism for injection molding part gate

Abstract

The utility model relates to shearing mechanism technical field, concretely is a kind of automatic shearing mechanism of injection molding part gate. Lower knife seat is slidably connected to upper knife seat by displacement unit, and displacement unit includes cylinder, clamping groove shaft, knife seat one, connecting shaft and baffle, cylinder is connected on horizontal connecting plate and its telescopic end is connected clamping groove shaft after penetrating horizontal connecting plate, and one side of horizontal connecting plate is connected upper knife seat one side by vertical connecting plate;Clamping groove shaft includes first protrusion and second protrusion, and first protrusion is located above horizontal connecting plate and second protrusion is matched with the clamping of knife seat one;Connecting shaft is equipped on knife seat one, and connecting shaft includes not less than two vertical shafts and base plate, base plate is connected with upper knife seat, and vertical shaft penetrates base plate and is matched with base plate sliding;Baffle is located above base plate and is for vertical shaft to pass through;Not less than two vertical shafts connect lower knife seat and drive lower knife seat to slide. Over displacement unit drive lower knife seat to slide and realize the shearing of automatic opposite gate to replace artificial pruning.

Description

Technical Field

[0001] This utility model relates to the field of shearing mechanism technology, specifically an automatic shearing mechanism for injection molded parts gates. Background Technology

[0002] In product manufacturing, injection molds are used to manufacture products. During the injection molding process, mold flow analysis is performed based on the product shape and material characteristics. The gate type of the injection molded part is determined based on the mold flow and other relevant data. If a side gate is used for the injection molding of the product, a gate that is difficult to cut will be generated after injection molding. Currently, the side gate is cut manually. Manual cutting requires using scissors to cut the side gate on each casting individually. Manual cutting of each casting individually results in a great waste of manpower and low efficiency. Moreover, it can cause irreversible scratches to the workers' hands. The use of scissors during the manual cutting of the gate may also scratch the product, leading to product scrap.

[0003] Therefore, there is an urgent need for an automated shearing mechanism to replace manual shearing for side gate cutting, thereby improving efficiency, saving manpower, and ensuring product quality. Utility Model Content

[0004] The problem to be solved is to provide an automated cutting mechanism to replace manual cutting, thereby improving efficiency, saving manpower, and ensuring product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic shearing mechanism for injection molded parts gates, comprising a lower cutter holder and an upper cutter holder. The lower cutter holder is provided with a lower cutting edge, and the upper cutter holder is provided with an upper cutting edge. The upper and lower cutting edges are arranged opposite to each other. The lower cutter holder is slidably connected to the upper cutter holder via a displacement unit. The displacement unit includes a cylinder, a slot shaft, a first cutter holder, a connecting shaft, and a baffle. The cylinder is connected to a horizontal connecting plate, and its telescopic end passes through the horizontal connecting plate and connects to the slot shaft. One side of the horizontal connecting plate is connected to one side of the upper cutter holder via a vertical connecting plate. The slot shaft includes a first protrusion and a second protrusion. The first protrusion is located above the horizontal connecting plate, and the second protrusion engages with the first cutter holder. The first cutter holder is provided with a connecting shaft, which includes at least two vertical shafts and a base plate. The base plate is connected to the upper cutter holder, and the vertical shafts pass through the base plate and slidably engage with it. The baffle is located above the base plate and allows the vertical shafts to pass through. At least two vertical shafts connect to the lower cutter holder and drive it to slide.

[0006] Preferably, the connecting shaft also includes no fewer than two miniature guide rod ball bearings, which are disposed within the substrate for the vertical shaft to pass through.

[0007] Preferably, the lower blade holder is also provided with a heating unit for heating the lower blade edge, and a heat insulation plate is also provided between the lower blade holder and the substrate.

[0008] Preferably, the upper tool holder is also provided with a guide groove, and one side of the lower tool holder slides along the guide groove.

[0009] Preferably, there are no fewer than two vertical axes, and the number of vertical axes is three.

[0010] Preferably, it also includes a side sealing plate, which connects the horizontal connecting plate and the vertical connecting plate. The side sealing plate is provided with an observation window for viewing the movement status of the vertical axis.

[0011] Preferably, the cylinder model is SDAT50*30*0S.

[0012] Preferably, the lower tool holder is slidably connected to the upper tool holder via an L-shaped connecting plate, and the L-shaped connecting plate and the lower tool holder are fixed together by bolts.

[0013] Preferably, a heat insulation plate is provided between the cylinder and the transverse connecting plate.

[0014] Compared with existing technologies, this utility model provides an automatic gate shearing mechanism for injection molded parts, which has the following advantages: After the part exits the injection mold, a part-retrieving robot takes out the product, moves it to the upper blade, automatically aligns it, and the robot sends a signal to the cylinder to automatically raise the lower blade and shear the gate. After the operation is completed, the retrieved product is placed on a conveyor belt and transported away. The automatic shearing mechanism can be increased according to the number of product gates and arranged according to the site layout. The lower blade holder is driven by a displacement unit to slide relative to the upper blade holder to achieve automatic shearing of the gate on both sides, replacing manual trimming and reducing scratches on the product. The lower blade is heated by a heating unit, which can easily handle ultra-thick gates of about 10mm. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the AA section;

[0017] Figure 3 for Figure 1 Schematic diagram of the BB cross section;

[0018] Figure 4 This is an isometric schematic diagram of the present invention;

[0019] Figure 5 for Figure 4 A schematic diagram of the hidden side panel;

[0020] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0021] Figure 7 This is a schematic diagram of the lower and upper cutting edges of this utility model when they are open;

[0022] Figure 8 This is a schematic diagram showing the closing of the lower and upper cutting edges of this utility model;

[0023] Explanation of reference numerals in the attached drawings: 100, displacement unit; 1, cylinder; 2, slot shaft; 21, first protrusion; 22, second protrusion; 3, tool holder one; 4, connecting shaft; 41, vertical shaft; 42, miniature guide rod ball bearing; 43, base plate; 5, baffle; 6, heat insulation plate one; 7, heating unit; 8, lower tool holder; 81, lower cutting edge; 9, upper tool holder; 91, upper cutting edge; 92, guide groove; 10, transverse connecting plate; 11, fixing block; 12, vertical connecting plate; 13, side sealing plate; 14, observation window; 15, positioning pin; 16, L-shaped connecting plate; 17, heat insulation plate two; 18, heat insulation plate three. Detailed Implementation

[0024] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0025] As described in the background section, manual trimming of side gates places a heavy workload on workers, and the frequent cutting motions can cause blisters on the hands. Improper manual operation can also lead to scratches and scrapping of the product. Larger castings are difficult to handle manually or require multiple people to operate, which is inconvenient. Therefore, this invention provides an automatic gate trimming mechanism for injection molded parts, as shown in the figure, including a lower cutter holder 8 and an upper cutter holder 9. The lower cutter holder 8 has a lower cutting edge 81 with its blade facing the upper cutting edge 91. The upper cutter holder 9 has an upper cutting edge 91 with its blade facing the lower cutting edge 81. The upper cutting edge 91 and the lower cutting edge 81 are positioned opposite each other. The lower tool holder 8 is slidably connected to the upper tool holder 9 via a displacement unit 100. The displacement unit 100 includes a cylinder 1, a slot shaft 2, a tool holder 3, a connecting shaft 4, and a baffle 5. The cylinder 1 is connected to the transverse connecting plate 10, and its telescopic end passes through the transverse connecting plate 10 and connects to the slot shaft 2. One side of the transverse connecting plate 10 is connected to one side of the upper tool holder 9 via a vertical connecting plate 12. The slot shaft 2 includes a first protrusion 21 and a second protrusion 22. The first protrusion 21 is located above the transverse connecting plate 10, and the second protrusion 22 engages with the tool holder 3. The tool holder 3 is provided with a connecting shaft 4, which includes at least two vertical shafts 41 and a base plate 43. Preferably, there are three vertical shafts 41. The base plate 43 is connected to the upper tool holder 9. The connecting shaft 4 also includes at least two miniature guide rod ball bearings 42, which are disposed within the base plate 43 for the vertical shafts 41 to pass through. A vertical shaft 41 passes through the substrate 43 and slides with the substrate 43 via a miniature guide rod ball bearing 42. A baffle 5 is located above the substrate 43 and allows the vertical shaft 41 to pass through; the baffle 5 does not move with the vertical shaft 41. At least two vertical shafts 41 connect to and drive the lower tool holder 8 to slide. The upper tool holder 9 is also provided with a guide groove 92, and one side of the lower tool holder 8 slides along the guide groove 92. Specifically, the lower tool holder 8 is slidably connected to the upper tool holder 9 via an L-shaped connecting plate 16, and the L-shaped connecting plate 16 is fixed to the lower tool holder 8 with bolts.

[0026] To accommodate different thicknesses and materials of the side gate, the lower cutter holder 8 is also equipped with a heating unit 7 for heating the lower cutting edge 81. A heat insulation plate 6 is also provided between the lower cutter holder 8 and the base plate 43 to prevent heat from the heating unit 7 from diffusing to the displacement unit 100. A side sealing plate 13 is also included, connecting the horizontal connecting plate 10 and the vertical connecting plate 12. An observation window 14 is provided on the side sealing plate 13 for observing the movement of the vertical axis 41. A second heat insulation plate 17 is provided between the cylinder 1 and the horizontal connecting plate 10 to prevent heat from being conducted to the cylinder 1.

[0027] like Figures 4 to 6In the embodiment shown, the L-shaped upper tool holder 9 has an upper cutting edge 91 on its horizontal portion and a guide groove 92 on its vertical portion. The bottom of the vertical portion of the upper tool holder 9 is connected to the base plate 43 using a mortise and tenon structure, as shown in the figure. Figure 6 As shown in section D. The vertical connecting plate 12 is connected to the side of the vertical part of the upper tool holder 9. The horizontal connecting plate 10 is located below the base plate 43 and connected to the bottom of the vertical connecting plate 12. The horizontal connecting plate 10 is parallel to the base plate 43. A side sealing plate 13 is connected to the outside of the base plate 43 and the outside of the horizontal connecting plate 10. An observation window 14 is installed on the side sealing plate 13. The observation window 14 is directly opposite the position of the connecting shaft 4 to facilitate observation of the movement of the connecting shaft 4. The cylinder 1 of the displacement unit 100 is connected to the bottom of the horizontal connecting plate 10. A heat insulation plate 17 is added between the horizontal connecting plate 10 and the cylinder 1 to isolate the heat from above. The lower end of the slot shaft 2 is connected to the output end of the cylinder 1. The upper end of the slot shaft 2 is engaged with the tool holder 3. The bottom end of the tool holder 3 is connected to the vertical shaft 41 by bolts. There are three vertical shafts 41. The upper end of the vertical shaft 41 passes through the miniature guide rod ball bearing 42, the base plate 43, and the baffle 5 in sequence and is then connected to the L-shaped connecting plate 16 by bolts. The L-shaped connecting plate 16 slides with the guide groove 92 on its side. Bolts also pass through the L-shaped connecting plate 16, heat insulation plate 6, and lower tool holder 8. The cylinder 1 is model SDAT50*30*0S. Five locating pins 15 are horizontally spaced at the connection between the side sealing plate 13 and the base plate 43. The locating pins 15 improve the connection accuracy between machining operations, achieving precise positioning of the side sealing plate 13, base plate 43, and upper tool holder 9. The fixing block 11 fixes the position of the horizontal connecting plate 10 and is connected to the horizontal connecting plate 10 by a T-nut. The vertical shaft 41 may generate heat during repeated displacement. To prevent this heat from diffusing to the surrounding structure, a heat insulation plate 18 is provided on the outside of the base plate 43. The heat insulation plate 18 is at the same height as the base plate 43, reducing heat conduction.

[0028] During assembly, first connect the upper tool holder 9, base plate 43, and baffle 5; then connect the horizontal connecting plate 10, cylinder 1, and slot shaft 2, and connect the tool holder 3 to the vertical shaft 41; then slide the tool holder 3 into the slot shaft 2 from one side, and the vertical shaft 41 passes through the base plate 43 from below, and connects the vertical connecting plate 12 to the horizontal connecting plate 10 and the upper tool holder 9 on one side; during the assembly process, assemble the heat insulation plate 6, heating unit 7, lower tool holder 8, and L-shaped connecting plate 16 onto the mechanism. The L-shaped connecting plate 16 first slides with the guide groove 92, and then connects the L-shaped connecting plate 16 to the vertical shaft 41 with bolts.

[0029] In operation, the injection molding product's gate is aligned with the mechanism by the part-retrieving robot, bringing the gate to be sheared into contact with the upper blade 91. A signal is sent to the control box, and cylinder 1, upon receiving the signal, operates, driving the blade holder 3 and vertical shaft 41 upwards. The vertical shaft 41 acts as a guide and stabilizer, transmitting the force from cylinder 1 to the lower blade holder 8 and lower blade 81. The lower blade 81 closes with the upper blade 91, cutting off the gate. Before the shears operate, ensure the heating unit 7 is working stably and adjust the shearing temperature according to the product material characteristics to prevent the product from stringing. Figure 7 This is a schematic diagram showing the lower blade 81 and the upper blade 91 open. Figure 8 The diagram shows the closed position of the lower blade 81 and the upper blade 91. When there are two gates and a product structure in the middle of the gate, the standard scissors cannot achieve automatic cutting. However, with this utility model, the scissor blades can be customized according to the distance between the two gates. The scissor blades are spaced in a toothed shape, which can easily deal with the problem of multiple gates.

[0030] This invention utilizes a displacement unit 100 to drive the lower cutter holder 8 to slide relative to the upper cutter holder 9, achieving automatic shearing of the side gates instead of manual trimming and reducing hand strain. A heating unit 7 adjusts the temperature of the lower blade 81 to accommodate gates of varying thicknesses, capable of shearing gates up to 10 mm thick. This mechanism also prevents scratches on the castings caused by manual trimming. This invention avoids direct contact between the injection molded parts and the workers' hands, reducing product scratch rates and significantly decreasing hand load during manual operation. Custom-made shear blades can also be used to customize the shear blades according to the gate shape and specific product structure. It also solves the problem of shearing thicker gates, improves production efficiency, increases automation, and expands the layout possibilities for downstream product lines after injection molding.

[0031] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. An automatic shearing mechanism for injection molded parts gates, comprising a lower cutter holder (8) and an upper cutter holder (9), wherein the lower cutter holder (8) is provided with a lower cutting edge (81) and the upper cutter holder (9) is provided with an upper cutting edge (91), the upper cutting edge (91) and the lower cutting edge (81) being arranged opposite to each other, characterized in that: The lower tool holder (8) is slidably connected to the upper tool holder (9) via a displacement unit (100). The displacement unit (100) includes a cylinder (1), a slot shaft (2), a tool holder (3), a connecting shaft (4), and a baffle (5). The cylinder (1) is connected to the transverse connecting plate (10), and its telescopic end passes through the transverse connecting plate (10) and is connected to the slot shaft (2). One side of the transverse connecting plate (10) is connected to one side of the upper tool holder (9) via a vertical connecting plate (12). The slot shaft (2) includes a first protrusion (21) and a second protrusion (22). The first protrusion (21) The second protrusion (22) is located above the horizontal connecting plate (10) and engages with the first tool holder (3); the first tool holder (3) is provided with a connecting shaft (4), which includes at least two vertical shafts (41) and a base plate (43). The base plate (43) is connected to the upper tool holder (9), and the vertical shaft (41) passes through the base plate (43) and slides with the base plate (43); the baffle (5) is located above the base plate (43) and allows the vertical shaft (41) to pass through; at least two vertical shafts (41) are connected to the lower tool holder (8) and drive the lower tool holder (8) to slide.

2. The automatic gate shearing mechanism for injection molded parts according to claim 1, characterized in that: The connecting shaft (4) also includes no fewer than two miniature guide rod ball bearings (42), which are disposed in the substrate (43) for the vertical shaft (41) to pass through.

3. The automatic gate shearing mechanism for injection molded parts according to claim 1, characterized in that: The lower blade holder (8) is also provided with a heating unit (7) for heating the lower blade (81), and a heat insulation plate (6) is provided between the lower blade holder (8) and the substrate (43).

4. The automatic gate shearing mechanism for injection molded parts according to claim 2 or 3, characterized in that: The upper tool holder (9) is also provided with a guide groove (92), and one side of the lower tool holder (8) slides along the guide groove (92).

5. The automatic gate shearing mechanism for injection molded parts according to claim 1, characterized in that: There are at least two vertical axes (41) and the number of them is three.

6. The automatic gate shearing mechanism for injection molded parts according to claim 1, characterized in that: It also includes a side sealing plate (13), which connects the horizontal connecting plate (10) and the vertical connecting plate (12). The side sealing plate (13) is provided with an observation window (14), which is used to view the movement status of the vertical axis (41).

7. The automatic gate shearing mechanism for injection molded parts according to claim 1, characterized in that: The cylinder (1) is model SDAT50*30*0S.

8. The automatic gate shearing mechanism for injection molded parts according to claim 4, characterized in that: The lower tool holder (8) is slidably connected to the upper tool holder (9) via an L-shaped connecting plate (16), and the L-shaped connecting plate (16) and the lower tool holder (8) are fixed by bolts.

9. The automatic gate shearing mechanism for injection molded parts according to claim 1, characterized in that: A heat insulation plate (17) is provided between the cylinder (1) and the transverse connecting plate (10).

Images