Nozzle cutting device for plastic parts

Abstract

The utility model discloses a water gap cutting device for plastic part relates to water gap shearing technical field, including fixed frame, the fixed frame top inboard fixed mounting has upper oblique sword, the fixed frame bottom fixed mounting has electric telescopic handle, electric telescopic handle output fixed mounting has fixed head, fixed head one end fixed mounting has lower oblique sword, the fixed frame is provided with limit component, the utility model provides technical scheme, through setting limit component, specific, when the fixed head will drive the limit link, and the limit link uses the pressing block and props up the limit movable link, and uses the return spring and buffers, after the limit movable link slides certain position, and the limit screw thimble is to the limit movable link limit, makes upper oblique sword and lower oblique sword just can cut the water gap, avoids upper oblique sword and lower oblique sword further in-depth collision, avoids the further collision dull of mouth of knife, prolongs the mouth of knife use time.

Description

Technical Field

[0001] This utility model relates to the field of sprue cutting technology, and in particular to a sprue cutting device for plastic parts. Background Technology

[0002] Plastic parts, also known as plastic components, are mainly composed of carbon, oxygen, hydrogen, nitrogen, and other organic or inorganic elements. They are solid in the finished product but are molten liquids during manufacturing. Therefore, they can be heated to melt them, pressurized to flow them, and cooled to solidify them, thus forming various shapes.

[0003] After plastic parts are molded, sprue cutting is required. Most sprue cutters on the market use an upper and lower cutting blade pressing down simultaneously. Long-term use can cause the blades to become dull. Furthermore, when cutting sprues on some hard plastic parts, waste material is easy to splash and is not easy to collect. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a sprue cutting device for plastic parts. This device solves the problem that in the prior art, after the plastic parts are molded, it is necessary to cut the sprue. Most sprue cutting devices on the market use an upper and lower cutting blade pressing down at the same time. Long-term use can easily cause the blade to become dull. In addition, when cutting the sprue of some hard plastic parts, waste material is easy to splash and is not easy to collect.

[0005] In view of this, the present invention provides a sprue cutting device for plastic parts, including a fixed frame, an upper oblique blade fixedly installed on the inner side of the top of the fixed frame, an electric telescopic rod fixedly installed on the bottom of the fixed frame, a fixed head fixedly installed on the output end of the electric telescopic rod, a lower oblique blade fixedly installed on one end of the fixed head, and a limit component provided in the fixed frame;

[0006] The limiting assembly includes a sliding groove, a limiting rod, a pressure block, a first support block, a limiting movable rod, a return spring, a second support block, and a limiting threaded pin. The sliding groove is formed on both sides of the fixed frame. The limiting rod is fixedly installed on one side of the fixed head. The pressure block is fixedly connected to both ends of the limiting rod. The first support block and the second support block are fixedly connected to one side of the fixed frame. The limiting movable rod is slidably connected to the inner side of the first support block. The return spring is sleeved on the outer wall of one end of the limiting movable rod. The limiting threaded pin is threadedly connected to the middle of the second support block.

[0007] Optionally, one end of the limiting rod is slidably connected to the inside of the slide groove, and the width of the limiting rod matches the width of the slide groove.

[0008] Optionally, one end of the reset spring is fixedly connected to one end of the limiting movable rod, and the other end of the reset spring abuts against the surface of one end of the first support block.

[0009] Optionally, one end of the limiting movable rod is located at the top of the pressure block, and the other end of the limiting movable rod is located at the bottom of one end of the limiting threaded pin.

[0010] Optionally, the inclination angle between the upper and lower oblique blades is 40-45 degrees.

[0011] Optionally, an upper limit frame is fixedly installed on one side of the upper inclined blade, and a lower limit frame is fixedly installed on one side of the lower inclined blade.

[0012] Optionally, the bottom shape of the upper limit frame matches the top shape of the lower limit frame.

[0013] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0014] 1. The sprue cutting device for plastic parts of this utility model, by setting a limiting component, specifically, when the electric telescopic rod pushes the lower and upper oblique blades to cut the sprue, the fixed head will drive the limiting rod. The limiting rod uses a pressure block to hold the limiting movable rod and a return spring for buffering. After the limiting movable rod slides to a certain position, the limiting threaded pin limits the limiting movable rod, so that the upper and lower oblique blades can just cut the sprue, avoiding further collision between the upper and lower oblique blades, preventing the blade edges from further collision and becoming dull, and extending the service life of the blade edges.

[0015] 2. The sprue cutting device for plastic parts of this utility model has an upper limit frame and a lower limit frame. Specifically, at the moment the sprue is cut off, the upper limit frame and the lower limit frame will merge together to form a square pipe shape, which can protect and guide the sprue waste of the plastic parts, and facilitate the unified guidance and collection of the sprue waste after it is cut off.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the rear structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the front structure of this utility model;

[0020] Figure 3 This is a partial structural diagram of the present invention;

[0021] Figure 4 This is a front view of the present utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Fixed frame; 2. Upper oblique blade; 3. Electric telescopic rod; 4. Fixed head; 5. Lower oblique blade; 601. Slide groove; 602. Limiting rod; 603. Pressure block; 604. First support block; 605. Limiting movable rod; 606. Return spring; 607. Second support block; 608. Limiting threaded pin; 9. Upper limit frame; 10. Lower limit frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0024] The following describes in detail, with reference to the accompanying drawings, the sprue cutting device for plastic parts according to an embodiment of the present invention.

[0025] Example 1

[0026] For easier understanding, please refer to Figures 1 to 4 An embodiment of the sprue cutting device for plastic parts provided by this utility model includes a fixed frame 1, an upper oblique blade 2 fixedly installed on the inner side of the top of the fixed frame 1, an electric telescopic rod 3 fixedly installed on the bottom of the fixed frame 1, a fixed head 4 fixedly installed at the output end of the electric telescopic rod 3, a lower oblique blade 5 fixedly installed at one end of the fixed head 4, and a limit component provided in the fixed frame 1.

[0027] The limiting assembly includes a slide groove 601, a limiting rod 602, a pressure block 603, a first support block 604, a limiting movable rod 605, a return spring 606, a second support block 607, and a limiting threaded pin 608. The slide groove 601 is formed on both sides of the fixed frame 1. The limiting rod 602 is fixedly installed on one side of the fixed head 4. The pressure block 603 is fixedly connected to both ends of the limiting rod 602. The first support block 604 and the second support block 607 are fixedly connected to one side of the fixed frame 1. The limiting movable rod 605 is slidably connected to the inside of the first support block 604. The return spring 606... Six sets are installed on the outer wall of one end of the limiting movable rod 605. The limiting threaded pin 608 is threadedly connected to the middle of the second support block 607. One end of the limiting rod 602 is slidably connected to the inner side of the slide groove 601, and the width of the limiting rod 602 matches the width of the slide groove 601. One end of the return spring 606 is fixedly connected to one end of the limiting movable rod 605, and the other end of the return spring 606 abuts against the surface of one end of the first support block 604. One end of the limiting movable rod 605 is located at the top of the pressure block 603, and the other end of the limiting movable rod 605 is located at the bottom of one end of the limiting threaded pin 608.

[0028] It should be noted that by setting a limiting rod 602, a limiting movable rod 605, and a limiting threaded pin 608 for limiting the displacement distance of the limiting movable rod 605, when the electric telescopic rod 3 pushes the lower oblique blade 5 and the upper oblique blade 2 to cut the sprue, the fixed head 4 will drive the limiting rod 602. The limiting rod 602 uses the pressure block 603 to hold the limiting movable rod 605, and the return spring 606 provides buffering. After the limiting movable rod 605 slides to a certain position, the limiting threaded pin 608 limits the limiting movable rod 605, so that the upper oblique blade 2 and the lower oblique blade 5 can just cut the sprue, avoiding further collision between the upper oblique blade 2 and the lower oblique blade 5, preventing the blade edges from further collision and becoming dull, and extending the service life of the blade edges. Before use, the position of the limiting threaded pin 608 should be adjusted to ensure its limiting effect.

[0029] In some embodiments, such as Figure 4 As shown, the inclination angle of the upper oblique cutter 2 and the lower oblique cutter 5 is 40-45 degrees.

[0030] It should be noted that the inclination angle of the upper slanted blade 2 and the lower slanted blade 5 is set to 40-45 degrees. When the upper slanted blade 2 and the lower slanted blade 5 are cutting, the slant setting helps to disperse the force and reduce the impact force.

[0031] Example 2

[0032] In some embodiments, such as Figure 1 As shown, an upper limit frame 9 is fixedly installed on one side of the upper inclined blade 2, and a lower limit frame 10 is fixedly installed on one side of the lower inclined blade 5. The bottom shape of the upper limit frame 9 matches the top shape of the lower limit frame 10.

[0033] It should be noted that by setting the upper limit frame 9 and the lower limit frame 10, at the moment the sprue is cut off, the upper limit frame 9 and the lower limit frame 10 will merge together to form a square pipe shape, which can protect and guide the sprue waste of the plastic parts, and facilitate the unified guidance and collection of the sprue waste after it is cut off.

[0034] Working principle: During use, the electric telescopic rod 3 pushes the lower oblique blade 5 and the upper oblique blade 2 to cut the sprue. At the same time, the fixed head 4 drives the limiting rod 602. The limiting rod 602 is pressed against the limiting movable rod 605 by the pressure block 603 and buffered by the return spring 606. After the limiting movable rod 605 slides to a certain position, the limiting threaded pin 608 limits the limiting movable rod 605, so that the upper oblique blade 2 and the lower oblique blade 5 can just cut the sprue. This prevents the upper oblique blade 2 and the lower oblique blade 5 from further collision and avoids the blade edge from further collision and dulling, thus extending the blade edge service life. At the moment the sprue is cut off, the upper limit frame 9 and the lower limit frame 10 will merge into a square pipe shape, which can protect and guide the sprue waste of the plastic part, and facilitate the unified guidance and collection of the sprue waste after cutting.

[0035] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A device for cutting sprues in plastic parts, characterized in that: The fixed frame (1) includes an upper inclined blade (2) fixedly installed on the inner side of the top of the fixed frame (1), an electric telescopic rod (3) fixedly installed on the bottom of the fixed frame (1), a fixed head (4) fixedly installed at the output end of the electric telescopic rod (3), a lower inclined blade (5) fixedly installed at one end of the fixed head (4), and a limit component provided in the fixed frame (1). The limiting assembly includes a slide groove (601), a limiting rod (602), a pressure block (603), a first support block (604), a limiting movable rod (605), a return spring (606), a second support block (607), and a limiting threaded pin (608). The slide groove (601) is opened on both sides of the fixed frame (1). The limiting rod (602) is fixedly installed on one side of the fixed head (4). The pressure block (603) is fixedly connected to both ends of the limiting rod (602). The first support block (604) and the second support block (607) are fixedly connected to one side of the fixed frame (1). The limiting movable rod (605) is slidably connected to the inside of the first support block (604). The return spring (606) is sleeved on the outer wall of one end of the limiting movable rod (605). The limiting threaded pin (608) is threadedly connected to the middle of the second support block (607).

2. The sprue cutting device for plastic parts according to claim 1, characterized in that: One end of the limiting rod (602) is slidably connected to the inside of the slide groove (601), and the width of the limiting rod (602) matches the width of the slide groove (601).

3. The sprue cutting device for plastic parts according to claim 1, characterized in that: One end of the reset spring (606) is fixedly connected to one end of the limiting movable rod (605), and the other end of the reset spring (606) abuts against one end of the surface of the first support block (604).

4. The sprue cutting device for plastic parts according to claim 1, characterized in that: One end of the limiting movable rod (605) is located at the top of the pressure block (603), and the other end of the limiting movable rod (605) is located at the bottom of one end of the limiting threaded pin (608).

5. The sprue cutting device for plastic parts according to claim 1, characterized in that: The angle between the blades of the upper oblique blade (2) and the lower oblique blade (5) is 40-45 degrees.

6. The sprue cutting device for plastic parts according to claim 1, characterized in that: An upper limit frame (9) is fixedly installed on one side of the upper oblique blade (2), and a lower limit frame (10) is fixedly installed on one side of the lower oblique blade (5).

7. The sprue cutting device for plastic parts according to claim 6, characterized in that: The bottom shape of the upper limit frame (9) matches the top shape of the lower limit frame (10).

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