Injection mold for recycling plastic waste

Abstract

The application relates to the technical field of injection molds, in particular to an injection mold capable of recycling plastic waste, which pushes a bottom mold body through a second air cylinder, and the bottom mold body is limited and blocked by a limiting baffle arranged at one end of a guide rail until the mold cavity at the top of the bottom mold body is directly below a cutting blade body; then the cutting blade body is pushed down by a third air cylinder, so that the cutting blade body cuts the material overflowing from the side of the mold cavity, and then the cutting blade body is pulled back to the original position; then the fourth air cylinder pushes the material pushing plate body to push the cut waste into the material leakage groove on the workbench, and finally the waste is collected in the waste collecting box; a bottom groove body is arranged at the bottom side of the material pushing plate body, that is, the top of the finished product in the mold cavity is prevented from being scratched and damaged with the bottom end of the material pushing plate body, so that the quality of the injection molded product is guaranteed; the cleaning soft brush is arranged, and the air supply hose and the blowing hole groove are used in cooperation, so that the recycling effect of the waste is ensured.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to an injection mold that can recycle plastic waste. Background Technology

[0002] Injection molds are precision tools used in the production of plastic products. They are used to inject molten plastic material into the mold cavity under high pressure through an injection molding machine. After cooling and solidification, the desired plastic product is formed. Injection molds usually consist of two parts: a moving mold and a fixed mold. The moving mold is usually the movable part, while the fixed mold is the stationary part. Together, they constitute the shape and size of the plastic product.

[0003] A document with publication number CN212579116U discloses a toy mold with a waste collection function. The solution is as follows: "When injection molding toys, the first cylinder is activated to move the upper mold base down until it abuts against the lower mold base, and the injection molding process can begin. After the injection molding is completed, the second cylinder is activated to retract it, which, in conjunction with the slide, moves the lower mold base to below the cutter. Then, the third cylinder is activated to extend it, which moves the cutter down to cut off the overflowing injection molding material on the lower mold base. After the cutter has finished cutting off the overflowing injection molding material, the cutter can be reset first, and then the electric push rod is activated to move the push plate until the push plate pushes the cut waste on the upper surface of the lower mold base into the recycling bin."

[0004] After the upper mold and the bottom mold separate, the finished product is in the cavity of the bottom mold. The overflowing edge material is cut off by a cutter, and then the material is pushed away and collected by a pusher plate. During this process, when the pusher plate pushes away the cut edge material, the bottom side of the pusher plate will come into contact with the top of the finished product in the cavity, which will cause some scratching problems. This will affect the quality of the finished product. In addition, the debris and waste at the top cavity opening and side of the cavity cannot be effectively collected and cleaned by the pusher plate alone.

[0005] To address these issues, this invention proposes an injection mold capable of recycling plastic waste. Summary of the Invention

[0006] The purpose of this invention is to provide an injection mold that can recycle plastic waste, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an injection mold for recycling plastic waste, comprising a bottom mold body and a top mold; a mold cavity is provided at the top of the bottom mold body and a support base is provided at the bottom of the bottom mold body; The support base is mounted on a guide rail, which is mounted on a workbench. Support legs are also provided on the bottom side of the workbench. A support plate is also provided on the workbench, and a first cylinder is fixedly installed on the bottom side of the support plate. The first cylinder is connected to the top mold. One side of the bottom mold body is connected to the second cylinder, which is set on the worktable; A material leakage trough is also provided in the workbench, and a waste collection box is provided on the bottom side of the material leakage trough. The support plate is also connected to the recycling auxiliary components.

[0008] Preferably, a limit baffle is provided at one end of the guide rail.

[0009] Preferably, a collection baffle is also fixedly installed at the top opening of the material leakage trough on the workbench.

[0010] Preferably, the recycling auxiliary component includes a third cylinder fixedly disposed at the top bottom side of the support plate, and a connecting disc fixedly disposed at the bottom end of the third cylinder, the connecting disc being fixedly connected to the bearing plate. A cutting blade is also provided at the bottom of the support plate.

[0011] Preferably, the recycling auxiliary assembly also includes a fourth cylinder fixedly disposed on the side wall of the support plate; A pusher plate is fixedly connected to the end of the fourth cylinder.

[0012] Preferably, the pusher plate is connected to an auxiliary structure; The auxiliary structure includes a bottom groove located on the bottom side of the pusher plate; An auxiliary ramp is provided at the top of the front opening of the bottom tank.

[0013] Preferably, baffle plates are symmetrically fixed on both sides of the front end of the pusher plate. This baffle plate is used to block and prevent waste from falling.

[0014] Preferably, an installation strip is also fixed in the bottom groove by screws; The mounting strip is located near the front opening of the bottom groove, and a cleaning soft brush is provided on the bottom side of the mounting strip.

[0015] Preferably, the auxiliary structure further includes an inner cavity disposed in the pusher plate body; The inner cavity is connected to a connector located at the top of the pusher plate, and the connector is connected to the air supply hose. A blowing hole groove is also provided on the front side wall of the pusher plate, and the blowing hole groove is also connected to the inner cavity.

[0016] Preferably, the blowing holes and slots are equidistant and inclined. One end of the blowing hole groove is located at the front end of the pusher plate, and the other end of the blowing hole groove is connected to the inner cavity. The groove opening connected to the inner cavity is higher than the groove opening at the front end of the pusher plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The present invention discloses an injection mold for recycling plastic waste, comprising a bottom mold body and a top mold. A mold cavity is provided at the top of the bottom mold body, and a support base is provided at the bottom end of the bottom mold body. The support base is mounted on a guide rail, which is mounted on a worktable. Support legs are also provided on the bottom side of the worktable. A support plate is also provided on the worktable, and a first cylinder is fixedly mounted on the bottom side of the support plate, the first cylinder being connected to the top mold. A second cylinder is connected to one side of the bottom mold body and is mounted on the worktable. A material leakage trough is also provided in the worktable, and a waste collection box is provided on the bottom side of the material leakage trough. The support plate is also connected to a recycling auxiliary component. After the injection molding process is completed, the bottom mold body is pushed by the second cylinder until the bottom mold body is limited and blocked by the limiting baffle set at one end of the guide rail. At the same time, the mold cavity at the top of the bottom mold body is directly below the cutting blade. Then, the cutting blade is pushed down by the third cylinder so that the cutting blade cuts the material overflowing from the side of the mold cavity. Then, the cutting blade is pulled back to reset. Next, the fourth cylinder pushes the pusher plate to push the cut-off waste material into the leakage trough on the worktable, and finally collects it in the waste collection box. This solution, based on the pusher plate for pushing, cleaning, and recycling of waste material, has two main features. First, a bottom groove is installed on the underside of the pusher plate to prevent scratch damage between the top of the finished product in the mold cavity and the bottom of the pusher plate, thus ensuring the quality of the injection molded product. Second, the solution also includes a cleaning soft brush in the bottom groove and a combination of an air supply hose and a blower hole groove to clean and recycle waste material, ensuring effective waste recycling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the left side of the injection mold structure for recycling plastic waste according to the present invention; Figure 2 This is a schematic diagram on the right side of the injection mold structure for recycling plastic waste according to the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structural connection at point A; Figure 4 This is a top view showing the connection between the pusher plate and the auxiliary structure of the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structural connection at point B; Figure 6 This is a bottom view showing the connection between the pusher plate and the auxiliary structure of the present invention; Figure 7 for Figure 6 Enlarged schematic diagram of the structural connection at point C; Figure 8 This is a partial cross-sectional view of the internal structure connection of the pusher plate of the present invention; Figure 9 for Figure 8 Enlarged schematic diagram of the structural connection at point D.

[0019] In the diagram: 1. Bottom mold body; 101. Mold cavity; 2. Support base; 3. Guide rail; 4. Workbench; 401. Support leg; 5. Support plate; 6. First cylinder; 7. Top mold; 8. Second cylinder; 9. Limiting baffle; 10. Waste collection box; 11. Collection baffle; 1201. Third cylinder; 1202. Bearing plate; 1203. Cutting blade; 1204. Fourth cylinder; 1205. Pushing plate; 1206. Connecting disc; 1301. Bottom groove; 1302. Auxiliary inclined surface; 1303. Baffle plate; 1401. Mounting strip; 1402. Cleaning soft brush; 1501. Blowing hole groove; 1502. Inner cavity; 1503. Connector; 1504. Air supply hose. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-9 A plastic waste recycling injection mold includes a bottom mold body 1 and a top mold 7; a mold cavity 101 is provided on the top of the bottom mold body 1 and a support base 2 is provided at the bottom end of the bottom mold body 1; the support base 2 is provided on a guide rail 3, the guide rail 3 is provided on a worktable 4, and a support leg 401 is also provided on the bottom side of the worktable 4. The workbench 4 is also equipped with a support plate 5, and a first cylinder 6 is fixedly installed on the bottom side of the support plate 5. The first cylinder 6 is connected to the top mold 7. One side of the bottom mold body 1 is connected to a second cylinder 8, which is installed on the workbench 4. A collection baffle 11 is also fixedly installed at the top opening of the material leakage trough on the workbench 4.

[0022] A material leakage trough is also provided in the workbench 4, and a waste collection box 10 is provided on the bottom side of the material leakage trough; the support plate 5 is also connected to the recycling auxiliary component; a limit baffle 9 is provided at one end of the guide rail 3.

[0023] According to the appendix Figure 1 -Appendix Figure 4 As shown, after the injection molding process is completed, the bottom mold body 1 is pushed by the second cylinder 8 until the bottom mold body 1 is limited and blocked by the limiting baffle 9 set at one end of the guide rail 3. At the same time, the mold cavity 101 at the top of the bottom mold body 1 is directly below the cutting blade 1203. Then, the cutting blade 1203 is pushed down by the third cylinder 1201, so that the cutting blade 1203 cuts the material overflowing from the side of the mold cavity 101. Then, the cutting blade 1203 is pulled back to reset.

[0024] Next, the fourth cylinder 1204 pushes the pusher plate 1205 to push the cut-off waste material into the leakage trough on the worktable 4, and finally collects it in the waste collection box 10.

[0025] Then from the appendix Figure 5 -Appendix Figure 9 As shown, this solution, based on pushing, cleaning, and recycling waste material through the pusher plate 1205, firstly, sets a bottom groove 1301 on the bottom side of the pusher plate 1205 to avoid scratch damage between the top of the finished product in the mold cavity 101 and the bottom of the pusher plate 1205, thus ensuring the quality of the injection molded product itself; secondly, this solution also sets a cleaning soft brush 1402 in the bottom groove 1301 and sets an air supply hose 1504 to work in conjunction with the blow hole groove 1501 to clean and recycle waste material, ensuring the recycling effect of waste material.

[0026] Combined with the appendix Figure 1 -Appendix Figure 5 As shown, the use of the recycling auxiliary components includes a third cylinder 1201 fixedly installed at the top bottom side of the support plate 5, and a connecting disc 1206 fixedly installed at the bottom end of the third cylinder 1201. The connecting disc 1206 is fixedly connected to the support plate 1202. A cutting blade 1203 is also provided at the bottom end of the support plate 1202.

[0027] The recycling auxiliary component also includes a fourth cylinder 1204 fixedly mounted on the side wall of the support plate 5; a pusher plate 1205 is fixedly connected to the end of the fourth cylinder 1204.

[0028] After the injection molding process is completed, the top mold 7 is raised and reset by the first cylinder 6. Then, the bottom mold body 1 is pushed directly below the cutting blade 1203 by the second cylinder 8. That is, the cutting blade 1203 is aligned with the cavity opening of the mold cavity 101 at the top of the bottom mold body 1. Then, the cutting blade 1203 is pushed down by the third cylinder 1201 until the cutting blade 1203 cuts off the waste material on the side of the cavity opening of the mold cavity 101. Then, the cutting blade 1203 is raised and reset by the third cylinder 1201.

[0029] As the bottom mold body 1 is pushed to align with the cutting blade 1203, one side of the bottom mold body 1 also aligns with the pusher plate 1205, and the bottom end face of the pusher plate 1205 and the top end face of the bottom mold body 1 are on the same horizontal plane; therefore, the pusher plate 1205 is pushed to move horizontally by the fourth cylinder 1204, and the pusher plate 1205 pushes and recycles the waste material after the top of the bottom mold body 1 is cut off, and pushes the waste material to the waste collection box 10 for collection.

[0030] Combined with appendix Figure 5 -Appendix Figure 7 As shown, when the pusher plate 1205 pushes and cleans the material at the top cavity of the bottom mold body 1, in order to avoid the bottom end of the pusher plate 1205 causing scratch damage to the top of the finished product in the mold cavity 101, this solution also provides an auxiliary structure.

[0031] The auxiliary structure includes a bottom groove 1301 disposed on the bottom side of the pusher plate 1205; and an auxiliary inclined surface 1302 disposed on the top of the front groove of the bottom groove 1301.

[0032] In other words, during the process of the pusher plate 1205 passing the top of the bottom mold body 1, the auxiliary inclined surface 1302 at the top of the bottom groove 1301 at the front end of the pusher plate 1205 contacts the cut-off waste material and pushes the waste material. During this process, due to the bottom groove 1301, the bottom end of the pusher plate 1205 will not contact the top of the finished product in the mold cavity 101, thereby avoiding scratch damage.

[0033] Furthermore, this solution also includes symmetrically fixed baffle plates 1303 on both sides of the front end of the pusher plate 1205; these baffle plates 1303 are used to provide a blocking and preventing the waste material from falling.

[0034] In other words, when the waste is pushed and cleaned by the pusher plate 1205, as the waste accumulates, it may move to both sides along the front end of the pusher plate 1205. In order to prevent the waste from falling off the bottom mold body 1 during the pushing process, that is, to prevent the waste from falling into the waste collection box 10 before it enters the waste collection box 10 from the discharge chute, this solution has fixed baffle plates 1303 on both sides of the front end of the pusher plate 1205 to block and limit the waste that tends to move to both sides, thereby ensuring that the waste enters the waste collection box 10 from the discharge chute.

[0035] In the appendix Figure 7 As shown in the figure, the present solution also includes an installation strip 1401 fixed in the bottom groove 1301 by screws; the installation strip 1401 is located near the front groove of the bottom groove 1301, and a cleaning soft brush 1402 is provided on the bottom side of the installation strip 1401.

[0036] The purpose of setting up the cleaning soft brush 1402 here is to compensate for the small amount of waste material when it is cut off. The cleaning soft brush 1402 can be used to clean it to ensure the efficiency of waste material cleaning. Furthermore, when there is debris, the waste material may enter the mold cavity 101 at the top of the bottom mold body 1 during the pushing process. At this time, the staff can take out the smaller waste material and put it into the waste collection box 10.

[0037] In this design, the cleaning soft brush 1402 is located on the bottom side of the mounting strip 1401, which is fixed to the bottom groove 1301 by screws. This allows the cleaning soft brush 1402 to be detached for easy replacement and maintenance. When the cleaning soft brush 1402 becomes dirty or damaged, it can be replaced and maintained in a timely manner.

[0038] Then from the appendix Figure 8 -Appendix Figure 9 As shown, the auxiliary structure in this solution also includes an inner cavity 1502 disposed in the pusher plate 1205; the inner cavity 1502 is connected to the connector 1503 disposed at the top of the pusher plate 1205, and the connector 1503 is connected to the air supply hose 1504; a blowing hole groove 1501 is also disposed on the front side wall of the pusher plate 1205, and the blowing hole groove 1501 is also connected to the inner cavity 1502.

[0039] Here, air is supplied to the inner cavity 1502 in the pusher plate 1205 through the air supply hose 1504, and then the gas in the inner cavity 1502 is ejected from the blowing hole groove 1501 at the front end of the pusher plate 1205; the ejected air here plays an auxiliary role in the cleaning and recycling of waste materials.

[0040] Furthermore, the blowing hole groove 1501 is equidistantly arranged and inclined; one end of the blowing hole groove 1501 is located at the front end of the pusher plate 1205, and the other end of the blowing hole groove 1501 is connected to the inner cavity 1502, and the groove connected to the inner cavity 1502 is higher than the groove located at the front end of the pusher plate 1205.

[0041] The purpose of tilting the blowout channel 1501 is twofold: firstly, to allow the air ejected from the blowout channel 1501 to better blow away and remove the waste material at the top of the bottom mold body 1, ensuring a better blowing and removal effect; secondly, the air ejected downwards from the blowout channel 1501, when passing through the mold cavity 101 at the top of the bottom mold body 1, also provides a cooling effect for the injection molded product in the mold cavity 101, making it easier to remove the injection molded product later.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection mold for recycling plastic waste, comprising a bottom mold body (1) and a top mold (7); a mold cavity (101) is provided at the top of the bottom mold body (1) and a support base (2) is provided at the bottom end of the bottom mold body (1). Its features are: The support base (2) is set on the guide rail (3), which is set on the workbench (4). A support leg (401) is also set on the bottom side of the workbench (4). A support plate (5) is also provided on the workbench (4), and a first cylinder (6) is fixedly provided on the bottom side of the support plate (5). The first cylinder (6) is connected to the top mold (7). One side of the bottom mold body (1) is connected to the second cylinder (8), which is set on the worktable (4); A material leakage trough is also provided in the workbench (4), and a waste collection box (10) is provided on the bottom side of the material leakage trough. The support plate (5) is also connected to the recycling auxiliary components.

2. The injection mold for recycling plastic waste according to claim 1, characterized in that: A limit baffle (9) is provided at one end of the guide rail (3).

3. The injection mold for recycling plastic waste according to claim 1, characterized in that: A collection baffle (11) is also fixedly installed at the top opening of the material leakage trough on the workbench (4).

4. The injection mold for recycling plastic waste according to claim 1, characterized in that: The recycling auxiliary component includes a third cylinder (1201) fixedly installed at the top bottom side of the support plate (5), and a connecting disc (1206) fixedly installed at the bottom end of the third cylinder (1201), which is fixedly connected to the bearing plate (1202). A cutting blade (1203) is also provided at the bottom of the support plate (1202).

5. The injection mold for recycling plastic waste according to claim 4, characterized in that: The recycling auxiliary assembly also includes a fourth cylinder (1204) fixedly mounted on the side wall of the support plate (5). A pusher plate (1205) is fixedly connected to the end of the fourth cylinder (1204).

6. The injection mold for recycling plastic waste according to claim 5, characterized in that: The pusher plate (1205) is connected to the auxiliary structure; The auxiliary structure includes a bottom groove (1301) disposed on the bottom side of the pusher plate (1205). An auxiliary inclined surface (1302) is provided at the top of the front opening of the bottom groove (1301).

7. The injection mold for recycling plastic waste according to claim 6, characterized in that: A baffle plate (1303) is symmetrically fixed on both sides of the front end of the pusher plate (1205). The baffle plate (1303) is used to provide a barrier to prevent waste from falling.

8. The injection mold for recycling plastic waste according to claim 6, characterized in that: An installation strip (1401) is also fixed in the bottom groove (1301) by screws. The mounting strip (1401) is located near the front groove of the bottom groove body (1301), and a cleaning soft brush (1402) is provided on the bottom side of the mounting strip (1401).

9. The injection mold for recycling plastic waste according to claim 6, characterized in that: The auxiliary structure also includes an inner cavity (1502) disposed in the pusher plate (1205); The inner cavity (1502) is connected to the connector (1503) located at the top of the pusher plate (1205), and the connector (1503) is connected to the air delivery hose (1504); A blowing hole groove (1501) is also provided on the front side wall of the pusher plate (1205), which is also connected to the inner cavity (1502).

10. The injection mold for recycling plastic waste according to claim 9, characterized in that: The blowing holes (1501) are equidistant and inclined. One end of the blowing hole groove (1501) is located at the front end of the pusher plate (1205), and the other end of the blowing hole groove (1501) is connected to the inner cavity (1502). The groove connected to the inner cavity (1502) is higher than the groove at the front end of the pusher plate (1205).

Images