Sprue cutting equipment

Abstract

The utility model relates to the technical field of product shaping, in particular to sprue cutting equipment. A workpiece with a pouring gate is positioned through the positioning groove, the lifting assembly drives the upper cutter to be matched with the lower cutter to cut the pouring gate of the workpiece, pouring gate waste obtained after cutting is discharged through the discharging groove, pouring gate cutting treatment on the workpiece is rapidly completed, the mechanical degree is higher, the working efficiency is improved, and the production cost is reduced. The guide assembly and the movable plate guide movement, the cutting precision is guaranteed, the sprue cutting quality is guaranteed, the defective rate of products is effectively reduced, the workpiece is pressed and positioned on the positioning groove while the pressing assembly cuts the workpieces, and the situation that the quality of the sprue of the workpiece is affected due to the fact that the workpiece deviates is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of product shaping, in particular to a gate cutting device. Background Art

[0002] In injection molding, molding a plastic product is achieved by injection molds, and in most injection molds, the gate is an indispensable part of completing the injection filling process. Since the injection molded product will inevitably cause the gate to be connected to the product after molding, especially for products with multiple gates, cutting also has certain problems.

[0003] Most of the existing gate cutting devices can only locate and cut one or more gates of a single workpiece. Multiple gates of multiple workpieces cannot be fixed during cutting, resulting in cutting deviation, which affects the cutting accuracy. The workpiece position deviation will also lead to an increase in the defective rate, indirectly increasing the production cost of the product. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a gate cutting device which can ensure cutting accuracy, so as to guarantee the quality of gate cutting and avoid the workpiece from being offset and affecting the quality of the workpiece's gate.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A gate cutting device, comprising:

[0007] a substrate on which a processing station is disposed;

[0008] A positioning jig is arranged on the processing station, the positioning jig comprises a jig block, the jig block is provided with a plurality of positioning grooves for positioning the workpiece, and the positioning grooves are provided with lower cutting knives;

[0009] A cutter assembly is arranged above the positioning fixture, and the cutter assembly comprises a movable plate, and a plurality of upper cutters are arranged on the movable plate;

[0010] A lifting assembly is drivingly connected to the cutter assembly, and the lifting assembly is used to drive the upper cutter on the cutter assembly to cooperate with the lower cutter to cut the gate of the workpiece;

[0011] A guide assembly is arranged on the movable plate, and the guide assembly is used for guiding the movable plate to move;

[0012] A material pressing assembly is arranged on the movable plate, and is used to synchronously press and position the workpiece on the positioning groove;

[0013] Among them, a material discharge trough is arranged in the middle of the jig block, a material collection trough is arranged on one side of the jig block, the material collection trough is connected with the positioning groove, and a guiding inclined surface is arranged on the edge of the positioning groove.

[0014] In one embodiment of the utility model, the movable plate has a plurality of fixing grooves, the fixing grooves are arranged one-to-one with the upper cutters, the fixed end of the upper cutter is clamped in the fixing groove, the fixed end of the upper cutter is fixedly connected to the movable plate by a fixing bolt, and the width of the fixed end of the upper cutter is 16-17mm.

[0015] In one embodiment of the utility model, the lower cutter has guide plates on both sides, so that the lower cutter has a T-shaped structure, and guide grooves matching the guide plates are arranged on both sides of the positioning groove. The lower cutter is slidably arranged in the positioning groove and the guide groove, and the upper cutter has a cutting edge portion, and the cutting edge portion has a supporting surface, and the supporting surface and the bottom surface of the positioning groove are on the same plane.

[0016] In one embodiment of the utility model, an avoidance groove is provided at the bottom of the jig block, and a support plate is provided on the free end of the lower cutter, and the thickness of the support plate is the same as the thickness of the avoidance groove.

[0017] In one embodiment of the utility model, the free end of the upper cutter has a cutting blade, the cutting blade is arranged in an inclined shape, a cutting surface is arranged on one side of the cutting blade, and a vertical distance between the cutting surface and the cutting edge portion is 0.01-0.02mm.

[0018] In one embodiment of the utility model, it also includes a frame, the base plate is arranged on the frame, a feed port is arranged on the frame, safety gratings are arranged on both sides of the feed port, the lifting assembly is arranged on the frame, a support frame is arranged at the bottom of the frame, and support feet are arranged at the four corners of the support frame.

[0019] In one embodiment of the utility model, the guide assembly includes a plurality of guide pins, the guide pins are vertically arranged on the movable plate, the jig block is provided with guide holes, the guide holes are arranged one-to-one with the guide pins, the guide holes are provided with guide cylinders, and the guide pins are passed through the guide cylinders.

[0020] In one embodiment of the utility model, the pressing assembly includes a pressing plate, guide rods are arranged at the four corners of the pressing plate, a guide sleeve matching the guide rods is arranged on the movable plate, the guide rod passes through the guide sleeve and is connected to the fixed block, a spring is sleeved on the guide rod, one end of the spring abuts against the movable plate, and the other end abuts against the pressing plate.

[0021] In one embodiment of the utility model, the lifting assembly includes a lifting cylinder, which is arranged on a frame, the lifting cylinder is drivingly connected to a lifting plate, the cutter assembly is arranged on the lifting plate, a guide rod is arranged on the base plate, a guide sleeve is arranged on the lifting plate, the guide rod is passed through the guide sleeve, and the lifting cylinder drives the cutter assembly on the lifting plate to move along the guide rod.

[0022] In one embodiment of the utility model, a limiting rod is provided on the lifting plate, a threaded hole is provided at the free end of the limiting rod, a limiting bolt is provided on the threaded hole, and a limiting block is provided on the limiting bolt.

[0023] Beneficial effects of the utility model:

[0024] The utility model locates the position of the workpiece with the gate through the positioning groove, and the lifting component drives the upper cutter to cooperate with the lower cutter to cut the gate of the workpiece, and the gate waste after cutting is discharged through the discharge chute, so as to quickly complete the gate cutting processing of the workpiece, with a higher degree of mechanization and improved work efficiency. The movable plate of the guide component performs motion guidance to ensure the cutting accuracy, so that the quality of the gate cutting is guaranteed and the defective rate of the product is effectively reduced. The pressing component presses the workpiece and positions it on the positioning groove while cutting, so as to avoid the workpiece from being offset and affecting the quality of the workpiece's gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a schematic diagram of a gate cutting device.

[0026] Figure 2 It is a schematic diagram of the lifting component of the utility model.

[0027] Figure 3 It is a schematic diagram of a positioning fixture of the utility model.

[0028] Figure 4 It is a schematic diagram of the lower cutter of the utility model.

[0029] Figure 5 It is a schematic diagram of a positioning fixture of the utility model.

[0030] Explanation of the numbers in the figure: 1. Frame; 11. Support frame; 12. Safety grating; 13. Support foot; 2. Lifting assembly; 21. Lifting cylinder; 22. Lifting plate; 23. Guide rod; 24. Base plate; 25. Limit rod; 26. Limit bolt; 27. Limit block; 28. Guide pin rod; 29. ​​Guide cylinder; 3. Positioning fixture; 31. Fixture block; 32. Positioning groove; 33. Material taking groove; 34. Material discharge groove; 35. Workpiece; 36. Lower cutter; 37. Cutting edge; 38. Support plate; 39. Avoidance groove; 4. Cutter assembly; 41. Movable plate; 42. Upper cutter; 43. Fixed end; 44. Cutting blade; 5. Pressing assembly; 51. Pressing plate; 52. Guide rod; 53. Spring; 54. Pressing plate. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] Reference Figure 1-5 As shown, a gate cutting device includes:

[0033] a substrate 24 on which a processing station is disposed;

[0034] A positioning jig 3 is arranged on the processing station, and the positioning jig 3 comprises a jig block 31, and the jig block 31 is provided with a plurality of positioning grooves 32 for positioning a workpiece 35, and a lower cutting knife 36 is arranged on the positioning groove 32;

[0035] A cutter assembly 4 is disposed above the positioning fixture 3, and the cutter assembly 4 includes a movable plate 41, and a plurality of upper cutters 42 are disposed on the movable plate 41;

[0036] The lifting assembly 2 is connected to the cutting assembly 4, and the lifting assembly 2 is used to drive the upper cutting knife 42 on the cutting assembly 4 to cooperate with the lower cutting knife 36 to cut the gate of the workpiece 35;

[0037] A guide assembly, disposed on the movable plate 41, and used for guiding the movable plate 41 to move;

[0038] A material pressing assembly 5 is disposed on the movable plate 41, and is used to synchronously press and position the workpiece 35 on the positioning groove 32;

[0039] A material discharge trough 34 is provided in the middle of the jig block 31 , a material collection trough 33 is provided on one side of the jig block 31 , the material collection trough 33 is connected to the positioning groove 32 , and a guiding inclined surface is provided on the edge of the positioning groove 32 .

[0040] The utility model positions the workpiece 35 with the gate through the positioning groove 32, and the lifting component 2 drives the upper cutter 42 to cooperate with the lower cutter 36 to cut the gate of the workpiece 35, and the gate waste after cutting is discharged through the discharge chute 34, so as to quickly complete the gate cutting process of the workpiece 35, with a higher degree of mechanization and improved work efficiency. The movable plate 41 of the guide component performs motion guidance to ensure the cutting accuracy, so that the quality of the gate cutting is guaranteed, and the defective rate of the product is effectively reduced. The pressing component 5 presses and positions the workpiece 35 on the positioning groove 32 while cutting, so as to avoid the workpiece 35 from being offset and affecting the quality of the gate of the workpiece 35.

[0041] In one embodiment of the utility model, a plurality of fixing grooves are provided on the movable plate 41, and the fixing grooves are arranged in one-to-one correspondence with the upper cutter 42. The fixed end 43 of the upper cutter 42 is clamped in the fixing groove, and the fixed end 43 of the upper cutter 42 is fixedly connected to the movable plate 41 by a fixing bolt. The width of the fixed end 43 of the upper cutter 42 is 16-17 mm. By widening the width of the fixed end 43, the position of the upper cutter 42 can be made more stable. At the same time, by increasing the width of the upper cutter 42, the through hole through which the fixing bolt passes can be changed into a strip groove, so that the position of the upper cutter 42 can be adjusted, and it can also meet the needs of gate cutting of different positions and sizes.

[0042] In one embodiment of the utility model, the lower cutter 36 has guide plates on both sides, so that the lower cutter 36 has a T-shaped structure, and the two sides of the positioning groove 32 are provided with guide grooves matching the guide plates. The lower cutter 36 is slidably arranged in the positioning groove 32 and the guide groove, and the upper cutter 42 has a cutting edge portion 37, and the cutting edge portion 37 has a supporting surface, and the supporting surface and the bottom surface of the positioning groove 32 are on the same plane.

[0043] Specifically, the support surface of the lower cutter 36 supports the cutting position of the workpiece 35, and cooperates with the cutting blade 44 on the upper cutter 42 to cut off the gate of the workpiece 35, which can provide a backing for the gate and ensure the cutting effect of the workpiece 35. The lower cutter 36 is slidably arranged in the positioning groove 32 and the guide groove, which is convenient for the rapid replacement of the lower cutter 36, convenient for maintenance and disassembly, and reduces production costs.

[0044] In one embodiment of the present invention, an avoidance groove 39 is provided at the bottom of the fixture block 31 , and a support plate 38 is provided on the free end of the lower cutter 36 . The thickness of the support plate 38 is the same as that of the avoidance groove 39 .

[0045] Specifically, the thickness of the support plate 38 is the same as that of the avoidance groove 39, so that the lower cutter 36 can be detachably installed in the positioning groove 32, which is convenient for the rapid replacement of the lower cutter 36. At the same time, the support plate 38 can limit the position of the lower cutter 36 to avoid the position displacement of the lower cutter 36.

[0046] In one embodiment of the utility model, the free end of the upper cutter 42 has a cutting blade 44, and the cutting blade 44 is arranged in an inclined shape. A cutting surface is arranged on one side of the cutting blade 44, and the vertical distance between the cutting surface and the cutting edge portion 37 is 0.01-0.02mm.

[0047] Specifically, the cutting blade 44 is arranged in an inclined shape, that is, the blade has two ends, one high and one low. When the high end of the cutting blade 44 cuts the gate, it first abuts against the gate, which plays a role in positioning the gate position. This can avoid the workpiece 35 from being offset due to the cutting of the upper cutter 42, affecting the cutting efficiency of the gate. The vertical distance between the cutting surface and the cutting blade 37 is 0.01-0.02mm, so the gate can be directly cut off, and the reserved gap can ensure the molding effect at the gate.

[0048] In one embodiment of the utility model, it also includes a frame 1, the base plate 24 is arranged on the frame 1, the frame 1 is provided with a feed port, safety gratings 12 are arranged on both sides of the feed port, the lifting assembly 2 is arranged on the frame 1, a support frame 11 is arranged at the bottom of the frame 1, and support feet 13 are arranged at the four corners of the support frame 11.

[0049] In one embodiment of the utility model, the guide assembly includes a plurality of guide pins 28, the guide pins 28 are vertically arranged on the movable plate 41, the jig block 31 is provided with guide holes, the guide holes are arranged one-to-one with the guide pins 28, the guide holes are provided with guide cylinders 29, and the guide pins 28 are passed through the guide cylinders 29.

[0050] Specifically, the lifting cylinder 21 drives the guide pin rod 28 on the movable plate 41 to move toward the positioning fixture 3 until the end of the guide pin rod 28 is inserted into the guide cylinder 29. The guide pin rod 28 can guide the movement of the movable plate 41 to ensure the cutting accuracy, so that the quality of the gate cutting is guaranteed, and the defective rate of the product is effectively reduced.

[0051] In one embodiment of the utility model, the pressing assembly 5 includes a pressing plate 51, guide rods 52 are arranged at the four corners of the pressing plate 51, a guide sleeve matching the guide rod 52 is arranged on the movable plate 41, the guide rod 52 passes through the guide sleeve and is connected to the fixed block, a spring 53 is sleeved on the guide rod 52, one end of the spring 53 abuts against the movable plate 41, and the other end abuts against the pressing plate 51, and a pressing plate 54 matching the workpiece 35 is arranged on the pressing plate 51.

[0052] Specifically, the pressing plate 54 on the pressing plate 51 presses the workpiece 35 against the positioning groove 32, ensuring the pressing accuracy of the pressing plate 54 on the workpiece 35. The lifting cylinder 21 continues to drive the lifting plate 22 to move toward the positioning fixture 3 to compress the spring 53 on the guide rod 52. Under the reaction force of the spring 53, the workpiece 35 is pressed against the positioning groove 32, which can facilitate the rapid clamping of the workpiece 35 and avoid the workpiece 35 from being offset, which affects the quality of the pouring gate of the workpiece 35.

[0053] In one embodiment of the utility model, the lifting assembly 2 includes a lifting cylinder 21, which is arranged on the frame 1, and the lifting cylinder 21 is drivingly connected to the lifting plate 22. The cutter assembly 4 is arranged on the lifting plate 22, and a guide rod 23 is arranged on the base plate 24. A guide sleeve is arranged on the lifting plate 22, and the guide rod 23 is passed through the guide sleeve. The lifting cylinder 21 drives the cutter assembly 4 on the lifting plate 22 to move along the guide rod 23.

[0054] Specifically, the lifting cylinder 21 drives the cutter assembly 4 on the lifting plate 22 to move along the guide rod 23, guides the movement direction of the cutter assembly 4, effectively improves the cutting accuracy of the upper and lower cutters 36, and can play a role in improving the processing accuracy.

[0055] In an embodiment of the utility model, a limiting rod 25 is provided on the lifting plate 22 , a threaded hole is provided at the free end of the limiting rod 25 , a limiting bolt 26 is provided on the threaded hole, and a limiting block 27 is provided on the limiting bolt 26 .

[0056] Specifically, the lifting cylinder 21 continues to drive the lifting plate 22 toward the positioning fixture 3 until the limit block 27 abuts against the base plate 24 to limit the position, so that the upper cutter 42 and the lower cutter 36 cut the gate in place, avoiding the problem of equipment interference caused by excessive movement of the upper cutter 42. A limiting bolt 26 is provided on the threaded hole. By rotating the limiting bolt 26, the cutting depth of the upper cutter 42 can be changed, so that the movement stroke of the upper cutter 42 can be controlled, thereby avoiding the problem that the existing device lacks a cutting depth limit, resulting in uncontrollable gate cutting of the workpiece 35.

[0057] Usage Process

[0058] The workpiece 35 with the gate is placed in the positioning groove 32, and the lifting cylinder 21 drives the cutter assembly 4 on the lifting plate 22 to move toward the positioning fixture 3, and simultaneously drives the guide pin rod 28 on the movable plate 41 to move toward the positioning fixture 3, until the end of the guide pin rod 28 is inserted into the guide cylinder 29, and the guide pin rod 28 can guide the movement of the movable plate 41 to ensure the cutting accuracy. The lifting cylinder 21 continues to drive the lifting plate 22 to move toward the positioning fixture 3 until the pressure plate 54 on the pressure plate 51 presses the workpiece 35 against the positioning groove 32, and the lifting cylinder 21 continues to drive the lifting plate 22 to move toward the positioning fixture 3 to compress the spring 53 on the guide rod 52, and the workpiece 35 is pressed tightly in the positioning groove 32 under the reaction force of the spring 53. The lifting cylinder 21 continues to drive the lifting plate 22 toward the positioning fixture 3 until the limit block 27 abuts against the base plate 24 to limit the position. The cutting blade 37 of the lower cutter 36 supports the cutting position of the workpiece 35, and cooperates with the cutting blade 44 on the upper cutter 42 to cut off the gate of the workpiece 35. The gate waste after cutting is discharged through the discharge chute 34, thereby quickly completing the gate cutting processing of the workpiece 35.

[0059] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A gate cutting device, characterized in that: include: a substrate on which a processing station is disposed; A positioning jig is arranged on the processing station, the positioning jig comprises a jig block, the jig block is provided with a plurality of positioning grooves for positioning the workpiece, and the positioning grooves are provided with lower cutting knives; A cutter assembly is arranged above the positioning fixture, and the cutter assembly comprises a movable plate, and a plurality of upper cutters are arranged on the movable plate; A lifting assembly is drivingly connected to the cutter assembly, and the lifting assembly is used to drive the upper cutter on the cutter assembly to cooperate with the lower cutter to cut the gate of the workpiece; A guide assembly is arranged on the movable plate, and the guide assembly is used for guiding the movable plate to move; A material pressing assembly is arranged on the movable plate, and is used to synchronously press and position the workpiece on the positioning groove; Among them, a material discharge trough is arranged in the middle of the jig block, a material collection trough is arranged on one side of the jig block, the material collection trough is connected with the positioning groove, and a guiding inclined surface is arranged on the edge of the positioning groove.

2. The gate cutting device according to claim 1, characterized in that: The movable plate has a plurality of fixing grooves, and the fixing grooves are arranged in one-to-one correspondence with the upper cutters. The fixed end of the upper cutter is clamped in the fixing groove, and the fixed end of the upper cutter is fixedly connected to the movable plate via a fixing bolt. The width of the fixed end of the upper cutter is 16-17 mm.

3. The gate cutting device according to claim 1, characterized in that: The lower cutter has guide plates on both sides, so that the lower cutter has a T-shaped structure. The positioning groove is provided with guide grooves matching the guide plates on both sides. The lower cutter is slidably arranged in the positioning groove and the guide groove. The upper cutter has a cutting edge portion, and the cutting edge portion has a supporting surface. The supporting surface and the bottom surface of the positioning groove are on the same plane.

4. The gate cutting device according to claim 3, characterized in that: The bottom of the jig block is provided with an avoidance groove, and the free end of the lower cutter is provided with a support plate, and the thickness of the support plate is the same as the thickness of the avoidance groove.

5. The gate cutting device according to claim 3, characterized in that: The free end of the upper cutter is provided with a cutting blade, the cutting blade is arranged in an inclined shape, a cutting surface is arranged on one side of the cutting blade, and a vertical distance between the cutting surface and the cutting blade portion is 0.01-0.02 mm.

6. The gate cutting device according to claim 1, characterized in that: It also includes a frame, the base plate is arranged on the frame, a feed port is arranged on the frame, safety gratings are arranged on both sides of the feed port, the lifting assembly is arranged on the frame, a support frame is arranged at the bottom of the frame, and support feet are arranged at the four corners of the support frame.

7. The gate cutting device according to claim 1, characterized in that: The guide assembly includes a plurality of guide pins, which are vertically arranged on the movable plate. The jig block is provided with guide holes, which are arranged one-to-one with the guide pins. The guide holes are provided with guide cylinders, and the guide pins are passed through the guide cylinders.

8. The gate cutting device according to claim 1, characterized in that: The pressing assembly includes a pressing plate, guide rods are arranged at the four corners of the pressing plate, a guide sleeve matching the guide rods is arranged on the movable plate, the guide rod passes through the guide sleeve and is connected to a fixed block, a spring is sleeved on the guide rod, one end of the spring abuts against the movable plate, and the other end abuts against the pressing plate.

9. The gate cutting device according to claim 6, characterized in that: The lifting assembly includes a lifting cylinder, which is arranged on a frame and is drivingly connected to a lifting plate. The cutter assembly is arranged on the lifting plate. A guide rod is arranged on the base plate, and a guide sleeve is arranged on the lifting plate. The guide rod is passed through the guide sleeve, and the lifting cylinder drives the cutter assembly on the lifting plate to move along the guide rod.

10. The gate cutting device according to claim 9, characterized in that: A limiting rod is arranged on the lifting plate, a threaded hole is arranged at the free end of the limiting rod, a limiting bolt is arranged on the threaded hole, and a limiting block is arranged on the limiting bolt.

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