Automatic cutting-off equipment for plastic part pouring gate

Abstract

The utility model provides automatic cutting equipment for a pouring gate of an injection molding part, which comprises a supporting plate, a feeding table arranged on the supporting plate in a left-right moving manner, a cutter and a pressure head arranged above the supporting plate in an up-down moving manner, the feeding table is used for placing a plastic part, the cutter is used for cutting off the pouring gate and is positioned on the right side of the feeding table, and the pressure head is positioned on the right side of the feeding table. The cutting edge of the cutter is flush with the root of the sprue, and the pressing head is located between the feeding table and the cutter and used for pressing a plastic part on the feeding table; the feeding table comprises a bottom plate, a U-shaped seat and an L-shaped seat, the U-shaped seat and the L-shaped seat are arranged on the bottom plate, a notch of the U-shaped seat faces upwards and extends in the front-back direction, the U-shaped seat can be used for supporting a plastic part plate body and avoiding a buckle, the L-shaped seat is arranged on the right side of the U-shaped seat in a left-right moving mode, and the upper end of the L-shaped seat is inserted between the buckle and a pouring gate; when the cutter moves leftwards to cut off the pouring gate, the upper end of the L-shaped seat can abut against the left side face of the pouring gate, so that the pouring gate is kept vertical, the buckle is protected, and follow-up normal assembly is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of post-injection processing, and in particular relates to an automatic gate cutting device for plastic parts. Background Art

[0002] Plastic parts are common components in electronic products and household appliances, usually used in covers, casings, etc. Figure 1 A cover plate for electronic products is disclosed, which includes a plate body 1 and a clip 2 connected to the rear surface of the plate body. The plate body is clipped to a bracket or other components of the electronic product through the clip. The plate body is an integrally formed injection molded part. After the plastic part is demolded by injection molding, the rear surface of the plate body 1 is also provided with a gate 3, and the gate 3 is located on the outside of the clip 2 and is arranged close to the clip 2. During post-injection molding processing, the gate needs to be cut off for subsequent assembly into an electronic product.

[0003] Traditional gate cutting methods mostly use manual cutting, which is time-consuming, labor-intensive, inefficient, and has poor incision consistency. There is also a method of using gate cutting equipment for cutting, but because the gate 3 of the injection molded part is located outside the buckle 2 and close to the buckle 2, when the gate root is cut off, the gate will bend toward the buckle 2 under the drive of the cutter, which is easy to push the buckle 2 crooked, resulting in subsequent assembly abnormalities. Utility Model Content

[0004] The purpose of the utility model is to overcome one or more shortcomings in the prior art and to provide a device for automatically cutting off the gate of a plastic part.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the automatic gate removal device of plastic parts includes:

[0006] A support plate extending in the horizontal direction,

[0007] A feeding platform and a cutter are movably arranged on the support plate. The feeding platform is used to place plastic parts. When the plastic parts are placed on the feeding platform, the gates of the plastic parts face right. The cutter is used to cut off the gates. The cutter is located on the right side of the feeding platform, and the cutting edge of the cutter is flush with the root of the gate.

[0008] a pressing head movably arranged above the support plate, the pressing head being located between the feeding platform and the cutter, and being used to press the plastic part onto the feeding platform;

[0009] The feeding platform includes a base plate, a U-shaped seat and an L-shaped seat arranged on the base plate, the groove of the U-shaped seat is upward and extends in the front-to-back direction, the U-shaped seat is used to support the plate body of the plastic part and avoid the buckle on the plate body, the L-shaped seat is movably arranged on the right side of the U-shaped seat, the upper end of the L-shaped seat is inserted between the buckle and the gate, and when the cutter moves to the left to cut off the gate, the upper end of the L-shaped seat is pressed against the left side of the gate to keep the gate vertical.

[0010] Preferably, the upper surface of the base plate is provided with a slide groove extending in the left-right direction, and the bottom of the L-shaped seat is provided with a first boss protruding downward, and the first boss is slidably embedded in the slide groove.

[0011] Further preferably, the U-shaped seat is arranged on the bottom plate so as to be movable leftward and rightward, and a second boss protruding downward is provided at the bottom of the U-shaped seat, and the second boss is slidably embedded in the sliding groove.

[0012] Preferably, the support plate is also provided with a feeding cylinder for driving the feeding platform to move left and right, a pressing cylinder for driving the pressure head to move up and down, and a cutting cylinder for driving the cutter to move left and right. The cylinder body of the feeding cylinder is connected to the support plate through a feeding cylinder support and suspended on the upper left of the support plate. The cylinder body of the pressing cylinder is connected to the support plate through a door frame-shaped bracket. The cylinder body of the cutting cylinder is connected to the support plate through a cutting cylinder support and suspended on the upper right of the support plate.

[0013] Further preferably, the support plate is also provided with a discharge air pipe that can move up and down, and the discharge air pipe is located on the left side of the door frame-shaped bracket. When the pressure head presses the plastic part on the feeding table to cut off the gate, the discharge air pipe can be aligned with the groove of the U-shaped seat. The discharge air pipe blows air to make the plastic part with the gate cut off detach from the feeding table to achieve discharge. A discharge air pipe for collecting the plastic parts detached from the feeding table is also provided on the opposite side of the discharge air pipe.

[0014] Further preferably, the support plate is provided with a drop opening for dropping the cut gate, the drop opening is located below the door frame-shaped bracket, the support plate is arranged on the equipment frame, and the equipment frame is also provided with a waste box for collecting the cut gate, and the upper opening of the waste box is aligned with the drop opening.

[0015] Further preferably, the support plate is also connected to a fence with an opening facing left, the fence is located below the door frame-shaped bracket and is arranged corresponding to the blanking port, and the fence is used to prevent the cut gate from flying out.

[0016] Further preferably, the cutter is connected to the end of the cylinder rod of the cutting cylinder through a cutter seat, the upper end surface of the cutter seat is provided with a knife groove extending in the left and right directions, the left end of the cutter is suspended and provided with the cutting edge, and the right end of the cutter is embedded in the knife groove.

[0017] Further preferably, the left end face of the cutter seat is also provided with a retractable elastic push rod, and the left end face of the elastic push rod is located at the lower left of the left end portion of the cutter. Before cutting off the gate, the elastic push rod retracts to cooperate with the upper end portion of the L-shaped seat to clamp the gate for cutting.

[0018] Preferably, the support plate is also provided with a slide for feeding materials to the feeding platform, and the slide extends in the front-to-back direction. The front opening of the slide is trumpet-shaped. When the feeding platform moves to the left to the extreme position, the rear opening of the slide is aligned with the feeding platform, and the plastic parts can be pushed horizontally backward to the U-shaped seat.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The utility model provides an automatic gate cutting device for injection molded parts, comprising a support plate extending in a horizontal direction, a feeding table and a cutter arranged on the support plate so as to be movable left and right, and a pressure head arranged above the support plate so as to be movable up and down. The feeding table is used to place plastic parts. When the plastic parts are placed on the feeding table, their gates face right. The cutter is used to cut off the gates. The cutter is located on the right side of the feeding table, and the cutting edge of the cutter is flush with the root of the gate. The pressure head is located between the feeding table and the cutter, and the pressure head is used to press the plastic parts tightly on the feeding table. ; By making the feeding table include a base plate, a U-shaped seat and an L-shaped seat arranged on the base plate, the notch of the U-shaped seat is made to face upward and extend in the front-to-back direction, the U-shaped seat can be used to support the plate body of the plastic part and avoid the buckle on the plate body. By setting the L-shaped seat on the right side of the U-shaped seat so that it can be moved left and right, the upper end of the L-shaped seat is inserted between the buckle and the gate. When the cutter moves to the left to cut off the gate, the upper end of the L-shaped seat can be used to press against the left side of the gate to keep the gate vertical, thereby protecting the buckle and ensuring subsequent normal assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 、 Figure 2 It is a three-dimensional schematic diagram of a plastic part whose gate is to be removed in the prior art.

[0022] Figure 3 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model.

[0023] Figure 4 yes Figure 3 A three-dimensional schematic diagram after the equipment frame and slide are hidden.

[0024] Figure 5 yes Figure 4 Schematic front view of .

[0025] Figure 6 yes Figure 4 This is a partial enlarged schematic diagram of point A in the middle. The plastic parts are hidden for easy observation.

[0026] Figure 7 yes Figure 4 Assembly and decomposition diagram at the middle feeding table.

[0027] Figure 8 yes Figure 4 Schematic diagram of the assembly and decomposition of the middle cutter seat.

[0028] Wherein: 1. Plate; 2. Buckle; 3. Gate; 4. Injection molded part; 10. Support plate; 11. Equipment frame; 12. Waste box; 13. Enclosure; 20. Feeding platform; 21. Bottom plate; 211. Slide; 22. U-shaped seat; 221. Groove; 222. Second boss; 23. L-shaped seat; 231. First boss; 30. Cutter; 31. Cutter seat; 311. Cutter groove; 31 2. Blind hole; 313. Waist-shaped hole; 32. Elastic push rod; 321. Pin hole; 33. Pin; 40. Press head; 50. Feed cylinder; 51. Feed cylinder support; 60. Press cylinder; 61. Door frame bracket; 70. Cutting cylinder; 71. Cutting cylinder support; 80. Unloading air pipe; 81. Unloading air pipe support plate; 82. Drive cylinder; 83. Unloading pipe; 90. Slide. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0030] like Figures 3 to 8As shown, the automatic gate cutting device for plastic parts provided by the present invention includes: a support plate 10 extending in the horizontal direction, a feeding table 20 and a cutter 30 which are arranged on the support plate 10 and can be moved left and right, and a pressure head 40 which is arranged above the support plate 10 and can be moved up and down, wherein the feeding table 20 is used to place the plastic part 4, when the plastic part 4 is placed on the feeding table 20, the gate 3 of the plastic part 4 faces right, the cutter 30 is used to cut off the gate 3, the cutter 30 is located on the right side of the feeding table 20, and the cutting edge of the cutter 30 is flush with the root of the gate 3; the pressure head 40 is located between the feeding table 20 and the cutter 30, and the pressure head 40 is used to move the feeding table 20 which is moved to the right to the extreme position 0 is pressed against the feeding table 20; the feeding table 20 includes a base plate 21, a U-shaped seat 22 and an L-shaped seat 23 arranged on the base plate 21, the groove 221 of the U-shaped seat 22 is upward and extends in the front-to-back direction, the U-shaped seat 22 is used to support the plate body 1 of the plastic part 4 and avoid the buckle 2 on the plate body 1, the L-shaped seat 23 is movably arranged on the right side of the U-shaped seat 22, and the upper end of the L-shaped seat 23 is inserted between the buckle 2 and the gate 3. When the cutter 30 moves to the left to cut off the gate 3, the upper end of the L-shaped seat 23 presses against the left side of the gate 3 to keep the gate 3 vertical, thereby protecting the buckle 2 and ensuring that the plastic part 4 can be assembled normally after the gate 3 is cut off.

[0031] To facilitate the sliding of the L-shaped seat 23, in this embodiment, the upper surface of the base plate 21 is provided with a slide groove 211 extending in the left and right directions, and the bottom of the L-shaped seat 23 is provided with a first boss 231 protruding downward, and the first boss 231 is slidably embedded in the slide groove 211. To avoid the buckle 2 in different positions, the U-shaped seat 22 is further movably arranged on the base plate 21, and the bottom of the U-shaped seat 22 is provided with a second boss 222 protruding downward, and the second boss 222 is slidably embedded in the slide groove 211 and is located on the left side of the first boss 231. To lock the positions of the L-shaped seat 23 and the U-shaped seat 22 on the base plate 21, the bottom of the L-shaped seat 23 and the bottom of the U-shaped seat 23 are both connected to the base plate 21 by locking bolts (not shown in the figure).

[0032] In order to realize the automatic continuous operation of cutting the gate 3, in this embodiment, the support plate 10 is also provided with a feeding cylinder 50 for driving the feeding table 20 to move left and right, a pressing cylinder 60 for driving the pressure head 40 to move up and down, and a cutting cylinder 70 for driving the cutter 30 to move left and right. The cylinder body of the feeding cylinder 50 is connected to the support plate 10 through the feeding cylinder support 51 and is suspended on the upper left of the support plate 10, the cylinder body of the pressing cylinder 60 is connected to the support plate 10 through the door frame-shaped bracket 61, and the cylinder body of the cutting cylinder 70 is connected to the support plate 10 through the cutting cylinder support 71 and is suspended on the upper right of the support plate 10.

[0033] Furthermore, the support plate 10 is also provided with a feed air pipe 80 that can move up and down. Specifically, the feed air pipe 80 is arranged on the feed air pipe support plate 81, and the feed air pipe support plate 81 is arranged on the support plate 10 to move up and down. A driving cylinder 82 for driving the feed air pipe support plate 81 to move up and down is also provided below the support plate 10. The cylinder rod of the driving cylinder 82 passes through the support plate 10 and is connected to the bottom of the feed air pipe support plate 81. The feed air pipe 80 is located at the door frame-shaped support plate. On the left side of the rack 61, when the pressure head 40 presses the plastic part 4 on the feeding table 20 to cut off the gate 3, the unloading air pipe 80 can be aligned with the groove 221 of the U-shaped seat 22 by the upward movement of the unloading air pipe support plate 81. After the gate 3 is cut off, the unloading air pipe 80 blows air to make the plastic part 4 with the gate 3 cut off separate from the feeding table 20 to achieve unloading. To facilitate collection, a unloading pipe 83 for collecting the plastic parts 4 that have separated from the feeding table 20 is also provided on the opposite side of the unloading air pipe 80.

[0034] In order to facilitate the collection of the cut gate 3, in this embodiment, a drop hole (not shown in the figure) for dropping the cut gate 3 is opened on the support plate 10, and the drop hole is located below the door frame-shaped bracket 61. The support plate 10 is set on the equipment frame 11. The equipment frame 11 is also provided with a waste box 12 for collecting the cut gate 3, and the upper opening of the waste box 12 is aligned with the drop hole.

[0035] In order to prevent the gate 3 from flying around during cutting, in this embodiment, a fence 13 with an opening facing left is connected to the support plate 10. The fence 13 is located below the door frame-shaped bracket 61 and is arranged corresponding to the blanking port. The fence 13 is used to prevent the cut gate 3 from flying out. In order to avoid interference, a gap is also provided on the fence 13 for the cutter 30 to enter and exit.

[0036] To facilitate the installation of the cutter 30, in this embodiment, the cutter 30 is connected to the end of the cylinder rod of the cutting cylinder 70 through the cutter seat 31. The upper end surface of the cutter seat 31 is provided with a knife groove 311 extending in the left and right directions. The left end of the cutter 30 is suspended and provided with a cutting edge, and the right end of the cutter 30 is embedded in the knife groove 311.

[0037] In order to further improve the stability of the gate 3, in this embodiment, the left end face of the cutter seat 31 is further provided with a retractable elastic push rod 32. The elastic push rod 32 is a cylindrical metal rod. The elastic push rod 32 can be inserted into the blind hole 312 opened on the left end face of the cutter seat 31 so as to be movable left and right to achieve retraction. A spring is also provided in the blind hole to drive the elastic push rod 32 to extend outward. In order to prevent the elastic push rod 32 from detaching from the cutter seat 31, a pin hole 321 is further provided on the elastic push rod 32, and a pin hole 321 is provided on the bottom wall of the knife groove 311. The waist-shaped hole 313 is connected to and corresponds to the pin hole 321. The lower end of the pin 33 is inserted into the pin hole 321, and the upper end of the pin 33 can be inserted into the waist-shaped hole 313 so as to be movable left and right. The pin 33 limits the elastic push rod 32 to the extreme position of moving left by pressing against the left side wall of the waist-shaped hole 313. Furthermore, the left end face of the elastic push rod 312 is located at the lower left of the left end of the cutter 30. Before cutting off the gate 3, the elastic push rod 312 clamps the gate 3 from the left and right directions by retracting to cooperate with the upper end of the L-shaped seat 23 to facilitate cutting.

[0038] To facilitate loading, the support plate 10 is further provided with a slide 90 for feeding materials to the feeding table 20. The slide 90 extends in the front-to-back direction, and the front opening of the slide 90 is trumpet-shaped to facilitate the replenishment of the injection molded parts 4. When the feeding table 20 moves to the left to the extreme position, the rear opening of the slide 90 is aligned with the feeding table 20, and the plastic part 4 can be pushed horizontally backward to the U-shaped seat 22.

[0039] It should be noted that, in order to achieve automation, the automatic gate cutting equipment for plastic parts provided by the present invention must have sensors for detecting the position of the feeding table 20 and the action of each cylinder. The setting method and model selection of these sensors are existing technologies and will not be repeated here. The pushing of the plastic part 4 on the slide 90 can also be achieved by mechanical pushing or manual pushing. It is not the invention point of the present invention and will not be repeated here.

[0040] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A device for automatically removing gates of plastic parts, comprising: A support plate extending in the horizontal direction, A feeding platform and a cutter are movably arranged on the support plate. The feeding platform is used to place plastic parts. When the plastic parts are placed on the feeding platform, the gates of the plastic parts face right. The cutter is used to cut off the gates. The cutter is located on the right side of the feeding platform, and the cutting edge of the cutter is flush with the root of the gate. a pressing head movably arranged above the support plate, the pressing head being located between the feeding platform and the cutter, and being used to press the plastic part onto the feeding platform; Its characteristics are: The feeding platform includes a base plate, a U-shaped seat and an L-shaped seat arranged on the base plate, the groove of the U-shaped seat is upward and extends in the front-to-back direction, the U-shaped seat is used to support the plate body of the plastic part and avoid the buckle on the plate body, the L-shaped seat is movably arranged on the right side of the U-shaped seat, the upper end of the L-shaped seat is inserted between the buckle and the gate, and when the cutter moves to the left to cut off the gate, the upper end of the L-shaped seat is pressed against the left side of the gate to keep the gate vertical.

2. The automatic gate removal device for plastic parts according to claim 1, characterized in that: The upper surface of the bottom plate is provided with a slide groove extending in the left-right direction, and the bottom of the L-shaped seat is provided with a first boss protruding downward, and the first boss is slidably embedded in the slide groove.

3. The automatic gate removal device for plastic parts according to claim 2, characterized in that: The U-shaped seat is arranged on the bottom plate so as to be movable leftward and rightward. A second boss protruding downward is provided on the bottom of the U-shaped seat. The second boss is slidably embedded in the sliding groove.

4. The automatic gate removal device for plastic parts according to claim 1, characterized in that: The support plate is also provided with a feeding cylinder for driving the feeding platform to move left and right, a pressing cylinder for driving the pressure head to move up and down, and a cutting cylinder for driving the cutter to move left and right. The cylinder body of the feeding cylinder is connected to the support plate through a feeding cylinder support and suspended on the upper left of the support plate. The cylinder body of the pressing cylinder is connected to the support plate through a door frame-shaped bracket. The cylinder body of the cutting cylinder is connected to the support plate through a cutting cylinder support and suspended on the upper right of the support plate.

5. The automatic gate removal device for plastic parts according to claim 4, characterized in that: The support plate is also provided with a discharge air pipe that can move up and down, and the discharge air pipe is located on the left side of the door frame-shaped bracket. When the pressure head presses the plastic part on the feeding table to cut off the gate, the discharge air pipe can be aligned with the groove of the U-shaped seat. The discharge air pipe blows air to make the plastic part with the gate cut off separate from the feeding table to achieve discharge. A discharge air pipe for collecting the plastic parts that have separated from the feeding table is also provided on the opposite side of the discharge air pipe.

6. The automatic gate removal device for plastic parts according to claim 5, characterized in that: The support plate is provided with a drop opening for dropping the cut gate, and the drop opening is located below the door frame-shaped bracket. The support plate is set on the equipment frame, and the equipment frame is also provided with a waste box for collecting the cut gate, and the upper opening of the waste box is aligned with the drop opening.

7. The automatic gate removal device for plastic parts according to claim 6, characterized in that: The support plate is also connected to a fence with an opening facing left. The fence is located below the door frame-shaped bracket and is arranged corresponding to the blanking port. The fence is used to prevent the cut gate from flying out.

8. The automatic gate removal device for plastic parts according to claim 4, characterized in that: The cutter is connected to the end of the cylinder rod of the cutting cylinder through a cutter seat. The upper end surface of the cutter seat is provided with a knife groove extending in the left and right directions. The left end of the cutter is suspended and provided with the cutting edge, and the right end of the cutter is embedded in the knife groove.

9. The automatic gate removal device for plastic parts according to claim 8, characterized in that: The left end face of the cutter seat is also provided with a retractable elastic push rod, and the left end face of the elastic push rod is located at the lower left of the left end of the cutter. Before cutting off the gate, the elastic push rod retracts to fit the upper end of the L-shaped seat to clamp the gate for cutting.

10. The automatic gate removal device for plastic parts according to claim 1, characterized in that: The support plate is also provided with a slide for feeding materials to the feeding platform. The slide extends in the front-to-back direction, and the front opening of the slide is trumpet-shaped. When the feeding platform moves to the left to the extreme position, the rear opening of the slide is aligned with the feeding platform, and the plastic parts can be pushed horizontally backward to the U-shaped seat.

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