PP plastic injection mold for ABS

Abstract

The invention relates to the technical field of injection molds, in particular to a PP (polypropylene) plastic injection mold for ABS (acrylonitrile butadiene styrene), which comprises a workbench, a feeding port, a heating system, a propelling system, a cavity body and a core body, and further comprises a propelling plate arranged on one side of the propelling system and used for mounting and pushing the core body to be attached to the cavity body; according to the PP plastic injection mold for the ABS, the four scraping rods which are arranged at the four corners of the mold core body at equal intervals are arranged on one side of the pushing plate, mold flashes on the outer side of the mold core body can be directly scraped, the flashes are effectively removed, and the appearance quality and the size precision of an injection product are improved; the scraping rod can slide in the rectangular groove or the circular groove according to the shape of the mold core body and the shape of the mold cavity body, linear and arc movement is achieved, the flash treatment requirements of molds of different shapes are met, and the universality of the molds and the flash treatment flexibility are improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a PP plastic injection mold for ABS. Background Art

[0002] PP plastic molds are industrial molds made of polypropylene through injection molding and other processes. They are used to produce various plastic products. PP plastic molds have the advantages of being lightweight, corrosion-resistant, and low-cost. They are widely used in construction, transportation, municipal administration, packaging and other fields. Compared with traditional metal molds, PP plastic molds are lightweight and easy to carry and operate. They are especially suitable for some occasions where there are restrictions on the weight of the mold or the mold needs to be moved frequently.

[0003] However, we found in actual use that the existing PP plastic mold has the problem of flash during the production process. The main reason for the flash is the unreasonable mold structure design, which causes plastic to overflow during the injection molding process, or the mold causes the surface of the cavity and core to wear due to friction during long-term use. Wear will cause the gap between these parts to increase, causing plastic to overflow from the gap during the injection molding process, thereby forming burrs on the edge of the injection molded product, affecting the product quality and appearance, increasing the post-processing process, and reducing production efficiency. The existing processing method is often to manually polish or trim the flash, which is not only time-consuming and labor-intensive, but may also damage the surface of the product. It is difficult to ensure consistency by manually processing the flash, resulting in uneven product quality. For this reason, we propose a PP plastic injection mold for ABS. Summary of the Invention

[0004] One of the technical problems to be solved by this application is: how to effectively deal with the flash produced by the PP plastic mold after the injection molding is completed, so that the edges of the injection molded product are smooth and burr-free after demolding, thereby improving product quality and appearance consistency as well as the production efficiency of the PP plastic mold.

[0005] To solve the above technical problems, the present invention provides a PP plastic injection mold for ABS, comprising a workbench, a loading port, a heating system, a propulsion system, a cavity body, and a core body, and further comprising:

[0006] A propulsion plate, provided on one side of the propulsion system, for installing and pushing the core body to fit into the cavity body;

[0007] Four scraping rods are provided, and the four scraping rods are all slidably arranged on one side of the pushing plate, and the four scraping rods are equidistantly arranged at the four corners of the core body, and the four scraping rods are used to scrape the mold flash on the outside of the core body;

[0008] A rectangular groove is provided on the propulsion plate for guiding the four scraping rods to move linearly. A circular groove is provided on the propulsion plate for guiding the four scraping rods to move in an arc. The rectangular groove is connected to the circular groove, and the four scraping rods are slidably provided on the propulsion plate through the rectangular groove and the circular groove.

[0009] A track switching assembly is provided in the push plate, and is used to drive the four scraping rods to slide in the rectangular groove or the circular groove according to the shapes of the core body and the cavity body;

[0010] A driving assembly is arranged in the propulsion plate, and the driving assembly is used to drive the four scraping rods to move, so that the four scraping rods slide in the rectangular groove or the circular groove, and drive the four scraping rods to perform flash processing according to the molds in the core body and the cavity body of different shapes.

[0011] In some embodiments, the four scraping rods are all made of iron-chromium-aluminum alloy and are heated by the principle of resistance heating.

[0012] In some embodiments, the track switching assembly includes four linear switching members arranged in the propulsion plate, and the four linear switching members are used to drive the four scraping rods to slide in the rectangular groove. Four arc switching members are arranged in the propulsion plate, and the four arc switching members are used to drive the four scraping rods to slide in the circular groove.

[0013] In some embodiments, the linear switching member includes a linear guide plate slidably arranged in the push plate, the linear guide plate is parallel to the outer side of the adjacent rectangular groove, the end of the linear guide plate close to the circular groove is a slope, and is in contact with the inner wall of the circular groove, and a linear guide rod is provided at the other end, a linear guide groove is opened in the push plate, the linear guide rod is slidably arranged in the linear guide groove, a linear spring is provided at the end of the linear guide rod away from the circular groove, and the other end of the linear spring is provided on the inner wall of the linear guide groove.

[0014] In some embodiments, the arc switching member includes an arc guide plate slidably arranged in the push plate, the arc guide plate has the same bending arc as the circular groove, and is located in the inner circle of the circular groove, a sliding groove is provided at one end of the arc guide plate close to the linear guide rod, the linear guide plate is slidably arranged at one end of the arc guide plate through the sliding groove, an arc guide rod is provided at one end of the arc guide plate away from the linear guide plate, an arc guide groove is provided in the push plate, and the arc guide rod is slidably arranged in the arc guide groove, an arc tension spring is provided on one side of the arc guide rod, and the other end of the arc tension spring is provided in the arc guide groove.

[0015] In some embodiments, the driving assembly includes a linear power member arranged in the propulsion plate for providing power for the linear motion of the four scraping rods. Four linear transmission members are slidingly arranged in the propulsion plate, and the four linear transmission members correspond one-to-one to the four scraping rods. The four linear transmission members are used to transmit power for the movement of the four scraping rods. Support members are provided on the outside of the four scraping rods, and the four support members are used to support the positions of the four scraping rods respectively. An arc power member is provided in the propulsion plate, and the arc power member is used to provide power for the four scraping rods to slide in the circular groove.

[0016] In some embodiments, the linear power member includes a first motor arranged in the propulsion plate, a first gear is provided at the output end of the first motor, a first drive ring is rotatably arranged in the propulsion plate, a plurality of first tooth grooves are opened in the first drive ring, and the first gear is engaged with the plurality of first tooth grooves.

[0017] In some embodiments, the linear transmission member includes a first transmission plate arranged on the outside of the first drive ring, a second transmission plate is slidingly arranged on the outside of the first transmission plate, a transmission spring is arranged between the first transmission plate and the second transmission plate, and a first magnetic plate is arranged at one end of the second transmission plate away from the first transmission plate.

[0018] In some embodiments, the support member includes a support frame arranged at one end of the scraping rod close to the cavity body, and a connecting rod is provided at the other end thereof. A limiting plate is provided at the end of the connecting rod away from the scraping rod, and the limiting plate is used in conjunction with both the rectangular groove and the circular groove, and the first magnetic plate is used in conjunction with the limiting plate.

[0019] In some embodiments, the arc power component includes a second motor arranged in the propulsion plate, a second gear is provided at the output end of the second motor, a second drive ring is rotatably provided in the propulsion plate, a plurality of second tooth grooves are provided on the inner wall of the second drive ring, and the second gear is engaged with the plurality of second tooth grooves, four second magnetic plates are provided on the inner wall of the second drive ring, and the four second magnetic plates are respectively used in conjunction with corresponding limit plates.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. Four scraping rods are arranged equidistantly at the four corners of the core body on one side of the push plate. They can directly scrape the mold flash on the outside of the core body, effectively remove the flash, and improve the appearance quality and dimensional accuracy of the injection molded products. Through the design of rectangular and circular grooves and track switching components, the scraping rods can slide in the rectangular or circular grooves according to the shapes of the core body and the cavity body to achieve linear and arc motion, meeting the flash processing requirements of molds of different shapes, improving the versatility of the mold and the flexibility of flash processing.

[0022] 2. The linear drive component in the drive assembly drives the first gear through the first motor, which in turn drives the first drive ring to rotate, providing sufficient power for the linear motion of the scraper rod. The linear drive component, through the cooperation of the first transmission plate, the second transmission plate, and the transmission spring, can stably transmit power to the limit plate, ensuring the smooth linear motion of the scraper rod;

[0023] 3. The arc drive component consists of a second motor, a second gear, a second drive ring and a second magnetic plate. The second motor drives the second gear to drive the second drive ring to rotate. The second magnetic plate cooperates with the limit plate on the scraper rod to provide precise power for the arc movement of the limit plate in the circular groove, ensuring the accuracy of the arc movement of the scraper rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the circular groove structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the rectangular groove structure of the present invention;

[0027] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of area A;

[0028] Figure 5 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the linear power member of the present invention;

[0030] Figure 7 This is a schematic diagram of the support structure of the present invention;

[0031] Figure 8 This is a partial structural diagram of the arc switching component of the present invention;

[0032] Figure 9 It is a schematic diagram of the sliding groove structure of the present invention.

[0033] In the figure: 1. Workbench; 2. Loading port; 3. Heating system; 4. Propelling system; 5. Cavity body; 6. Core body; 7. Propelling plate; 8. Scraping rod; 9. Rectangular groove; 10. Circular groove; 11. Track switching assembly; 12. Driving assembly; 13. Linear switching member; 131. Linear guide plate; 132. Linear guide rod; 133. Linear guide groove; 134. Linear spring; 14. Arc switching member; 141. Arc guide plate; 142. Sliding groove; 143. Arc guide rod; 144. Arc guide groove; 145 , arc tension spring; 15, linear power component; 151, first motor; 152, first gear; 153, first drive ring; 154, first tooth groove; 16, linear transmission component; 161, first transmission plate, 162, second transmission plate; 163, transmission spring; 164, first magnetic plate; 17, support member; 171, support frame; 172, connecting rod; 173, limit plate; 18, arc power component; 181, second motor; 182, second gear; 183, second drive ring; 184, second tooth groove; 185, second magnetic plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-9 The present invention provides a technical solution: a PP plastic injection mold for ABS, comprising a workbench 1, a feeding port 2, a heating system 3, a propulsion system 4, a cavity body 5 and a core body 6, and also comprising:

[0036] The propulsion plate 7 is provided on one side of the propulsion system 4 and is used to install and propel the core body 6 and the cavity body 5 into contact with each other;

[0037] There are four scraping rods 8, and the four scraping rods 8 are all slidably arranged on one side of the push plate 7, and the four scraping rods 8 are equidistantly arranged at the four corners of the core body 6, and the four scraping rods 8 are used to scrape the mold flash on the outside of the core body 6;

[0038] A rectangular groove 9 is provided on the propulsion plate 7 for guiding the four scraping rods 8 to move in a straight line. A circular groove 10 is provided on the propulsion plate 7 for guiding the four scraping rods 8 to move in an arc. The rectangular groove 9 is connected to the circular groove 10, and the four scraping rods 8 are slidably provided on the propulsion plate 7 through the rectangular groove 9 and the circular groove 10.

[0039] The track switching assembly 11 is arranged in the push plate 7, and the track switching assembly 11 drives the four scraping rods 8 to slide in the rectangular groove 9 or the circular groove 10 according to the shape of the core body 6 and the cavity body 5;

[0040] The driving assembly 12 is arranged in the propulsion plate 7. The driving assembly 12 is used to drive the four scraping rods 8 to move, so that the four scraping rods 8 slide in the rectangular groove 9 or the circular groove 10, and drive the four scraping rods 8 to perform flash processing according to the molds in the core body 6 and the cavity body 5 of different shapes.

[0041] The four scraping rods 8 are all made of iron-chromium-aluminum alloy and are heated by the principle of resistance heating. Resistance heating is an existing technology, and the heating speed is fast and uniform, which effectively improves the scraping efficiency and ensures that the mold surface is smooth and without marks. The scraping rod 8 made of iron-chromium-aluminum alloy has excellent high temperature resistance and good thermal conductivity, ensuring stable operation in high temperature environment, effectively improving the flash processing efficiency and extending the service life.

[0042] The track switching assembly 11 includes four linear switching members 13 arranged in the propulsion plate 7, which are used to drive the four scraping rods 8 to slide in the rectangular groove 9. Four arc switching members 14 are arranged in the propulsion plate 7, which are used to drive the four scraping rods 8 to slide in the circular groove 10.

[0043] The linear switching member 13 includes a linear guide plate 131 slidably arranged in the push plate 7, the linear guide plate 131 is parallel to the outer side of the adjacent rectangular groove 9, the end of the linear guide plate 131 close to the circular groove 10 is a bevel, and fits with the inner wall of the circular groove 10, and a linear guide rod 132 is provided at the other end. A linear guide groove 133 is provided in the push plate 7, and the linear guide rod 132 is slidably arranged in the linear guide groove 133. A linear spring 134 is provided at the end of the linear guide rod 132 away from the circular groove 10, and the other end of the linear spring 134 is provided on the inner wall of the linear guide groove 133. Before completing the replacement of the cavity body 5 and the core body 6, and when the scraper rod 8 is needed to perform subsequent flash processing on the circular mold, the linear guide rod is pushed 132, so that the linear guide rod 132 slides in the linear guide groove 133. As the linear guide rod 132 moves, the linear spring 134 begins to accumulate force. When the linear guide rod 132 moves, the linear guide rod 132 will drive the linear guide plate 131 to retract until the linear guide plate 131 completely enters the linear guide groove 133 and breaks away from the contact with the sliding groove 142. Its function is to retract the linear guide plate 131 so that the arc guide plate 141 can pop out, so that the rectangular groove 9 can no longer guide the scraper rod 8, forcing the scraper rod 8 to move only through the circular groove 10 under the action of the limit plate 173, ensuring that the scraper rod 8 adapts to the shape of the circular mold, accurately performs flash processing, and improves the surface finish of the mold.

[0044] The arc switching member 14 includes an arc guide plate 141 slidably arranged in the push plate 7. The arc guide plate 141 has the same bending arc as the circular groove 10 and is located in the inner circle of the circular groove 10. A sliding groove 142 is provided at one end of the arc guide plate 141 close to the linear guide rod 132. The linear guide plate 131 is slidably arranged at one end of the arc guide plate 141 through the sliding groove 142. An arc guide rod 143 is provided at one end of the arc guide plate 141 away from the linear guide plate 131. An arc guide groove 144 is provided in the push plate 7, and the arc guide rod 143 is slidably arranged in the arc guide groove 144. An arc tension spring 145 is provided on one side of the arc guide rod 143. The other end of 45 is set in the arc guide groove 144. When the linear guide plate 131 is completely separated from the sliding groove 142, the arc tension spring 145 will quickly pull the arc guide rod 143, so that the arc guide rod 143 slides in the arc guide groove 144, thereby driving the arc guide plate 141 to extend until the arc guide plate 141 reaches the side of the connecting rod 172 close to the core body 6. At the same time, the four arc guide plates 141 complete the filling of the circular groove 10 and completely close the rectangular groove 9. Its function is to ensure that the scraper rod 8 runs stably in the circular groove 10, avoid entering the rectangular groove 9 by mistake, further optimize the accuracy of flash processing, and improve the overall quality of the mold.

[0045] The driving assembly 12 includes a linear power member 15 arranged in the propulsion plate 7 for providing power for the linear movement of the four scraping rods 8. Four linear transmission members 16 are slidingly arranged in the propulsion plate 7, and the four linear transmission members 16 correspond one-to-one to the four scraping rods 8. The four linear transmission members 16 are used to transmit power for the movement of the four scraping rods 8. Support members 17 are provided on the outside of the four scraping rods 8. The four support members 17 are used to support the positions of the four scraping rods 8 respectively. An arc power member 18 is provided in the propulsion plate 7, and the arc power member 18 is used to provide power for the four scraping rods 8 to slide in the circular groove 10.

[0046] The linear power component 15 includes a first motor 151 arranged in the propulsion plate 7, and a first gear 152 is provided at the output end of the first motor 151. A first drive ring 153 is rotatably provided in the propulsion plate 7. A plurality of first tooth grooves 154 are provided in the first drive ring 153, and the first gear 152 is engaged with the plurality of first tooth grooves 154. When the first motor 151 is started, the first motor 151 will drive the first gear 152 at its output end to rotate. When the first gear 152 rotates, the first gear 152 will drive the first drive ring 153 to rotate through the plurality of first tooth grooves 154. Its function is to drive the four first transmission plates 161 to move synchronously through the rotation of the first drive ring 153, thereby providing power for the four scraping rods 8 to realize linear motion, ensuring that each scraping rod 8 operates synchronously and accurately.

[0047] The linear transmission member 16 includes a first transmission plate 161 arranged on the outside of the first drive ring 153, a second transmission plate 162 is slidingly arranged on the outside of the first transmission plate 161, a transmission spring 163 is arranged between the first transmission plate 161 and the second transmission plate 162, and a first magnetic plate 164 is arranged on the end of the second transmission plate 162 away from the first transmission plate 161. When the first drive ring 153 rotates, the first transmission plate 161 arranged on the outside thereof will rotate accordingly. When the first transmission plate 161 rotates, the second transmission plate 162 slidingly arranged on the outside thereof will rotate together with the first transmission plate 161. At the same time, the first transmission plate 164 arranged on the first transmission ring 153 The transmission spring 163 between the plate 161 and the second transmission plate 162 will be compressed as the two move relative to each other. When the second transmission plate 162 rotates, the first magnetic plate 164 set at one end of the second transmission plate 162 will push the limit plate 173 to move. The transmission spring 163 will adjust its elastic force in real time according to the position of the limit plate 173 to ensure the stability of the limit plate 173 during the movement. Its function is to ensure that the limit plate 173 always maintains precise positioning and a stable movement trajectory during the rotation of the first transmission plate 161 and the second transmission plate 162 through the adaptive adjustment of the transmission spring 163, thereby improving the overall scraping efficiency.

[0048] The support member 17 includes a support frame 171 provided at one end of the scraping rod 8 close to the cavity body 5, and a connecting rod 172 is provided at the other end thereof. A limit plate 173 is provided at the end of the connecting rod 172 away from the scraping rod 8. The limit plate 173 is used in conjunction with the rectangular groove 9 and the circular groove 10. The first magnetic plate 164 is used in conjunction with the limit plate 173. When the limit plate 173 moves, the limit plate 173 will drive the corresponding connecting rod 172, so that the connecting rod 172 drives the support frame 171 to move together, thereby making the support frame 171 move together. The scraper rod 8 between the frame 171 and the connecting rod 172 also moves accordingly. The scraper rod 8 is in contact with the outer side of the cavity body 5, and the scraper rod 8 has been heated by resistance before movement. The heated scraper rod 8 will quickly melt and cut off the overflowing burrs to ensure that the mold surface is smooth and traceless. Resistance heating is an existing technology and will not be elaborated on here. Its function is to efficiently remove burrs through the heated scraper rod 8, improve the mold surface treatment quality, ensure product accuracy and appearance, and at the same time reduce manual intervention, optimize the production process, and improve overall production efficiency.

[0049] The arc power member 18 includes a second motor 181 arranged in the propulsion plate 7, a second gear 182 is provided at the output end of the second motor 181, a second drive ring 183 is rotatably provided in the propulsion plate 7, a plurality of second tooth grooves 184 are provided on the inner wall of the second drive ring 183, and the second gear 182 is engaged with the plurality of second tooth grooves 184, and four second magnetic plates 185 are provided on the inner wall of the second drive ring 183, and the four second magnetic plates 185 are respectively used in conjunction with the corresponding limit plates 173. When it is necessary to perform flash processing on the circular mold, the second motor 181 is started, and the second motor 181 will drive it The second gear 182 at the output end rotates. When the second gear 182 rotates, the second gear 182 will drive the second drive ring 183 to rotate through multiple second tooth grooves 184, so that the second magnetic plate 185 in the second drive ring 183 rotates together. Its function is to generate power through the second motor 181 to drive the second magnetic plate 185 to rotate, so that the second magnetic plate 185 pushes the limit plate 173, so that the limit plate 173 rotates in the circular groove 10, and then the scraping rod 8 evenly and efficiently scrapes the flash of the circular mold, ensuring that the edge of the mold is smooth and flawless, thereby improving product quality and production efficiency.

[0050] During use, when the staff needs to perform mold injection molding, first pour the PP particles into the feeding port 2, and then heat them through the heating system 3 to melt them into a fluid state, and then drive the propulsion plate 7 through the propulsion system 4 to move, so that the propulsion plate 7 drives the core body 6 to move into the cavity body 5 until the core body 6 and the cavity body 5 are closed, and then the melted PP particles are injected into the cavity between the core body 6 and the cavity body 5. When it is completely filled, the injection molding process is completed;

[0051] When the mold after injection molding needs to be flashed, the first motor 151 is started. In the initial state, the linear guide plate 131 is in an extended state, and the linear guide plate 131 separates the rectangular groove 9 from the circular groove 10. At this time, the arc guide plate 141 is in a retracted state, so that the limit plate 173 can only slide in the rectangular groove 9. When the first motor 151 is started, the first motor 151 will drive the first gear 152 at its output end to rotate. When the first gear 152 rotates, the first gear 152 will drive the first drive ring 153 to rotate through a plurality of first tooth grooves 154. When the first drive ring 153 rotates, the first transmission plate 161 arranged on its outside will rotate accordingly. When the first transmission plate 161 rotates, the second transmission plate 162 slidingly arranged on its outside will rotate together under the action of the first transmission plate 161. At the same time, the transmission spring 163 arranged between the first transmission plate 161 and the second transmission plate 162 will be compressed as the two move relative to each other. When the second transmission plate 162 rotates, the first magnetic plate 164 arranged at one end of the second transmission plate 162 will push the limit plate 173 to move. The transmission spring 163 will adjust its elastic force in real time according to the position of the limit plate 173 to ensure the stability of the limit plate 173 during the movement. When the limit plate 173 is pushed by the first magnetic plate 164, under the action of the linear guide plate 131, the limit plate 173 can only slide along the rectangular groove 9. At the same time, the first magnetic plate 164 can effectively adsorb the limit plate 173, so that it will not lose control under the action of gravity, ensuring that the limit plate 173 moves smoothly in the rectangular groove 9 until the limit plate 173 reaches the next corner from one corner of the rectangular groove 9;

[0052] When the limiting plate 173 moves, the limiting plate 173 will drive the corresponding connecting rod 172, so that the connecting rod 172 drives the support frame 171 to move together, so that the scraping rod 8 set between the support frame 171 and the connecting rod 172 also moves accordingly, and the scraping rod 8 is in contact with the outer side of the cavity body 5, and the scraping rod 8 has been heated by resistance before movement. The heated scraping rod 8 will quickly melt and cut off the overflowing flash to ensure that the mold surface is smooth and traceless. Resistance heating is an existing technology and will not be described in detail here. After the flash processing is completed, the mold is quickly cooled by the cooling system to solidify and form it, and then the pushing plate 7 can be controlled to move in the opposite direction to drive the core body 6 to separate from the cavity body 5 and take out the molded product. If there is no need to replace the core body 6 and the cavity body 5, the next round of injection molding can be carried out directly. The limiting plate 173 and the scraping rod 8 are controlled by the first motor 151 to reciprocate after the cavity body 5 is filled with plastic, so that continuous and efficient production of the mold can be achieved, which greatly improves the injection molding efficiency and product quality.

[0053] When the staff needs to replace the core body 6 and the cavity body 5, it is necessary to control the limit plate 173 and the scraper rod 8 to return to the initial position, and ensure that the first motor 151 is powered off, and the cavity body 5 and the core body 6 are completely separated. Before completing the replacement of the cavity body 5 and the core body 6, and when the scraper rod 8 is needed to perform flash processing on the circular mold, the linear guide rod 132 is pushed so that the linear guide rod 132 slides in the linear guide groove 133. As the linear guide rod 132 moves, the linear spring 134 begins to accumulate force. When the linear guide rod 132 moves, the linear guide rod 132 will drive The linear guide plate 131 is retracted until it completely enters the linear guide groove 133 and is out of contact with the sliding groove 142. When the linear guide plate 131 is completely separated from the sliding groove 142, the arc tension spring 145 quickly pulls the arc guide rod 143, causing the arc guide rod 143 to slide in the arc guide groove 144, thereby driving the arc guide plate 141 to extend until the arc guide plate 141 reaches the side of the connecting rod 172 close to the core body 6. At the same time, the four arc guide plates 141 complete the filling of the circular groove 10 and completely close the rectangular groove 9.

[0054] When it is necessary to perform flash processing on the circular mold, the second motor 181 is started, and the second motor 181 drives the second gear 182 at its output end to rotate. When the second gear 182 rotates, the second gear 182 drives the second drive ring 183 to rotate through a plurality of second tooth grooves 184, thereby causing the second magnetic plate 185 in the second drive ring 183 to rotate together. When the second magnetic plate 185 rotates, the second magnetic plate 185 pushes the limit plate 173, so that the limit plate 173 drives the connecting rod 172 to slide in the circular groove 10, and the connecting rod 172 The movement drives the support frame 171 and the scraper rod 8 to move accordingly. The scraper rod 8 fits the surface of the cavity body 5 in the circular groove 10 to perform flash processing, ensuring that the surface of the circular mold is smooth and without marks, until the scraper rod 8 reaches the position of the next scraper rod 8. At this time, the second motor 181 stops working, and then continues to take out the mold that has completed cooling. When flash processing is required next time, the output end of the second motor 181 is driven to rotate in the opposite direction, so that the scraper rod 8 moves in the opposite direction, and the flash can be continued to be processed to ensure that the mold surface continues to be smooth, thereby completing the flash processing of the circular mold.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A PP plastic injection mold for ABS, comprising a workbench (1), a feeding port (2), a heating system (3), a propulsion system (4), a cavity body (5) and a core body (6), characterized in that: Also included are: A propulsion plate (7) is provided on one side of the propulsion system (4) and is used for installing and pushing the core body (6) and the cavity body (5) into contact with each other; Four scraping rods (8) are provided, and the four scraping rods (8) are all slidably arranged on one side of the pushing plate (7), and the four scraping rods (8) are equidistantly arranged at the four corners of the core body (6), and the four scraping rods (8) are used to scrape the mold flash on the outside of the core body (6); A rectangular groove (9) is provided on the propulsion plate (7) for guiding the four scraping rods (8) to move in a straight line. A circular groove (10) is provided on the propulsion plate (7) for guiding the four scraping rods (8) to move in an arc. The rectangular groove (9) is communicated with the circular groove (10), and the four scraping rods (8) are all slidably arranged on the propulsion plate (7) through the rectangular groove (9) and the circular groove (10). A track switching assembly (11) is arranged in the pushing plate (7), and is used to drive the four scraping rods (8) to slide in the rectangular groove (9) or the circular groove (10) according to the shapes of the core body (6) and the cavity body (5); A driving assembly (12) is arranged in the pushing plate (7), and the driving assembly (12) is used to drive the four scraping rods (8) to move, so that the four scraping rods (8) slide in the rectangular groove (9) or the circular groove (10), and drive the four scraping rods (8) to perform flash processing according to the molds in the core body (6) and the cavity body (5) of different shapes.

2. The PP plastic injection mold for ABS according to claim 1, characterized in that: The four scraping rods (8) are all made of iron-chromium-aluminum alloy and are heated by the resistance heating principle.

3. The PP plastic injection mold for ABS according to claim 1, characterized in that: The track switching assembly (11) includes four linear switching members (13) arranged in the propulsion plate (7), and the four linear switching members (13) are used to drive the four scraping rods (8) to slide in the rectangular groove (9). Four arc switching members (14) are arranged in the propulsion plate (7), and the four arc switching members (14) are used to drive the four scraping rods (8) to slide in the circular groove (10).

4. The PP plastic injection mold for ABS according to claim 3, characterized in that: The linear switching member (13) includes a linear guide plate (131) slidably arranged in the pushing plate (7), the linear guide plate (131) is parallel to the outer side of the adjacent rectangular groove (9), one end of the linear guide plate (131) close to the circular groove (10) is an inclined surface and fits with the inner wall of the circular groove (10), and the other end is provided with a linear guide rod (132), a linear guide groove (133) is provided in the pushing plate (7), the linear guide rod (132) is slidably arranged in the linear guide groove (133), and a linear spring (134) is provided at one end of the linear guide rod (132) away from the circular groove (10), and the other end of the linear spring (134) is provided on the inner wall of the linear guide groove (133).

5. The PP plastic injection mold for ABS according to claim 4, characterized in that: The arc switching member (14) includes an arc guide plate (141) slidably arranged in the propulsion plate (7), the arc guide plate (141) has the same bending arc as the circular groove (10) and is located in the inner circle of the circular groove (10), and a sliding groove (142) is provided at one end of the arc guide plate (141) close to the linear guide rod (132), and the linear guide plate (131) is slidably arranged on the arc guide plate (141) through the sliding groove (142). 1), an arc guide rod (143) is provided at one end of the arc guide plate (141) away from the linear guide plate (131), an arc guide groove (144) is provided in the propulsion plate (7), and the arc guide rod (143) is slidably provided in the arc guide groove (144), an arc tension spring (145) is provided on one side of the arc guide rod (143), and the other end of the arc tension spring (145) is provided in the arc guide groove (144).

6. The PP plastic injection mold for ABS according to claim 5, characterized in that: The driving assembly (12) includes a linear power member (15) arranged in the propulsion plate (7) for providing power for the linear motion of the four scraping rods (8); four linear transmission members (16) are slidingly arranged in the propulsion plate (7), and the four linear transmission members (16) correspond to the four scraping rods (8) one by one; the four linear transmission members (16) are used to transmit power for the movement of the four scraping rods (8); support members (17) are provided on the outside of the four scraping rods (8); the four support members (17) are used to support the positions of the four scraping rods (8) respectively; an arc power member (18) is provided in the propulsion plate (7); the arc power member (18) is used to provide power for the four scraping rods (8) to slide in the circular groove (10).

7. The PP plastic injection mold for ABS according to claim 6, characterized in that: The linear power member (15) comprises a first motor (151) arranged in the propulsion plate (7); a first gear (152) is provided at the output end of the first motor (151); a first drive ring (153) is rotatably provided in the propulsion plate (7); a plurality of first tooth grooves (154) are provided in the first drive ring (153), and the first gear (152) is meshed with the plurality of first tooth grooves (154).

8. The PP plastic injection mold for ABS according to claim 7, characterized in that: The linear transmission member (16) comprises a first transmission plate (161) arranged outside the first drive ring (153); a second transmission plate (162) is slidably arranged outside the first transmission plate (161); a transmission spring (163) is arranged between the first transmission plate (161) and the second transmission plate (162); and a first magnetic plate (164) is arranged at one end of the second transmission plate (162) away from the first transmission plate (161).

9. The PP plastic injection mold for ABS according to claim 8, characterized in that: The support member (17) includes a support frame (171) arranged at one end of the scraping rod (8) close to the cavity body (5), and a connecting rod (172) is provided at the other end thereof. A limiting plate (173) is provided at one end of the connecting rod (172) away from the scraping rod (8). The limiting plate (173) is used in conjunction with the rectangular groove (9) and the circular groove (10), and the first magnetic plate (164) is used in conjunction with the limiting plate (173).

10. The PP plastic injection mold for ABS according to claim 9, characterized in that: The arc power member (18) comprises a second motor (181) arranged in the propulsion plate (7); a second gear (182) is provided at the output end of the second motor (181); a second drive ring (183) is rotatably provided in the propulsion plate (7); a plurality of second tooth grooves (184) are provided on the inner wall of the second drive ring (183); and the second gear (182) is meshed with the plurality of second tooth grooves (184); four second magnetic plates (185) are provided on the inner wall of the second drive ring (183), and the four second magnetic plates (185) are respectively used in conjunction with corresponding limit plates (173).

Images