3M rubber ring injection mold

Abstract

The utility model relates to the technical field of rubber ring production equipment, and discloses a 3M rubber ring injection mold which comprises a lower mold and an upper mold, a plurality of forming grooves are formed in the lower mold, a plurality of water grooves are formed in the bottom surface of the lower mold, piston rods are connected in the water grooves in a sliding mode, and a plurality of water inlet pipes communicated with the forming grooves are installed in the lower mold. The bottom surface of the lower mold is fixedly connected with two brackets, a transmission unit is mounted between the two brackets, the lower end of the piston rod extends out of the lower mold, and the transmission unit drives the piston rod to move up and down in the water tank; water is conveyed into the water tank through the water inlet pipe, the water entering the water tank can cool an injection molding part in the forming groove in the lower mold, and when molten injection molding raw materials need to be conveyed into the forming groove, the piston rod can be driven by the transmission unit to ascend to extrude out the water in the water tank; and therefore, the phenomenon that the molten injection molding raw material is cooled and solidified when the molding groove is not filled with the cold water in the water tank is avoided, and the molding quality of the rubber ring is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber ring production equipment, in particular to a 3M rubber ring injection mold. Background Art

[0002] 3M rubber ring is a sealing element made of 3M's unique technology or materials, usually used to connect parts of mechanical equipment to prevent fluid or gas leakage, prevent dust from entering, reduce friction, etc. It combines 3M's professional technology and experience in adhesives, sealing materials and other fields to provide high-performance sealing solutions for various industrial and commercial applications. The production of 3M rubber rings is generally made by mold injection.

[0003] Prior art, such as the patent with publication number CN210061858U, discloses a rubber sealing ring injection molding mold, including a mounting frame, a push cylinder is fixedly connected to the bottom of the mounting frame, a telescopic piston rod is connected to the push cylinder, an upper mold is fixedly connected to the bottom of the telescopic piston rod, fan brackets are fixedly connected to the top two sides of the upper mold, an exhaust fan is fixedly connected to the fan bracket, a lower mold is arranged below the upper mold, lower mold cores are evenly arranged on the lower mold, through grooves are arranged between the lower mold cores, and the lower mold cores are connected to each other through the through grooves. The utility model is provided with a slider, and after the injection molding is completed, the pressure plate is pressed upward, and the slider is lifted by the push rod, so that the injection molded part is driven to rise, which is convenient for removal and improves work efficiency. At the same time, a circulating water pipe is provided in the lower mold, and cold water is injected into the water inlet to cool the injection molded part, thereby accelerating the molding time of the injection molded part and improving production efficiency.

[0004] The existing technology still has shortcomings:

[0005] In the above-mentioned prior art, a circulating water pipe is used to cool the injection molded parts to speed up the molding time of the injection molded parts. However, in actual use, the raw materials of the injection molded parts are melted at high temperature and transported to the mold. The cold water in the circulating water pipe will cool the melted raw materials entering the mold. If the melted raw materials are cooled before they are shaped by the mold, the quality of the rubber ring molding will be affected and the injection molded parts will be easily deformed. For this reason, a 3M rubber ring injection mold is proposed. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a 3M rubber ring injection mold, which can cool the rubber ring to speed up the injection time while ensuring the quality of the rubber ring molding.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 3M rubber ring injection mold, comprising a lower mold and an upper mold, the lower mold is provided with a plurality of molding grooves, the bottom surface of the lower mold is provided with a plurality of water troughs, a piston rod is slidably connected in the water trough, a plurality of water inlet pipes connected to the molding grooves are installed in the lower mold, two brackets are fixedly connected to the bottom surface of the lower mold, a transmission unit is installed between the two brackets, the lower end of the piston rod extends outside the lower mold, and the transmission unit drives the piston rod to move up and down in the water trough.

[0008] Preferably, a water outlet hole is formed on the upper surface of the piston rod, and a water outlet pipe connected to the water outlet hole is installed on the outer wall of the lower end of the piston rod.

[0009] Preferably, the transmission unit includes a motor installed on the side wall of one of the brackets, a sliding sleeve installed at the lower end of the piston rod and a plurality of shaft discs rotating on the adjacent side walls of the two brackets. The output end of the motor is fixedly connected to a transmission rod, which passes through the two brackets and is rotatably connected thereto. One end of the shaft disc is passed outside the bracket. The end of the transmission rod close to the motor is transmission-connected to one of the adjacent shaft discs through a transmission belt. The two adjacent shaft discs are transmission-connected through a transmission belt. An eccentric rod is fixedly connected between two adjacent shaft discs laterally. The plurality of eccentric rods are respectively passed through a plurality of groups of laterally arranged sliding sleeves. The eccentric rod is slidingly connected to the inner wall of the sliding sleeve.

[0010] Preferably, one end of the transmission rod away from the motor is drivingly connected to one of the adjacent shaft discs via a transmission belt.

[0011] Preferably, the inner top wall of the water tank is higher than the inner bottom surface of the forming tank, and the forming tank is located outside the water tank.

[0012] Preferably, an arc groove is formed on the upper end surface of the piston rod, the middle of the arc groove is the lowest point, and an arc-shaped protrusion is fixedly connected to the inner top wall of the water tank, and the arc-shaped protrusion fits with the arc groove.

[0013] Preferably, the distance between the water tank and the forming tank is no more than 4 cm.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model delivers water to the water tank through the water inlet pipe. The water entering the water tank can cool the injection molded parts in the molding groove on the lower mold. When it is necessary to deliver the melted injection molding material to the molding groove, the piston rod can be driven up by the transmission unit to squeeze the water in the water tank out, thereby avoiding the phenomenon that the melted injection molding material in the water tank cools down and solidifies before filling the molding groove for molding, thereby ensuring the quality of the rubber ring molding.

[0016] 2. In the utility model, a water outlet hole is opened in the middle of the piston rod, and a water outlet pipe connected with the water outlet hole is installed on the outer wall of the lower end of the piston rod, so that the water transported from the water inlet pipe to the water tank can be continuously discharged from the water outlet hole in cooperation with the water outlet pipe, so that the flowing water further improves the cooling effect on the injection molded parts. At the same time, when the piston rod rises, the water in the water tank can be discharged from the water outlet hole.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a bottom schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the side wall of the lower mold of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the bottom surface of the lower mold of the utility model and the positions of the water inlet pipe and the water tank.

[0022] In the figure: 1. lower mold; 2. upper mold; 3. molding groove; 4. water tank; 5. piston rod; 6. bracket; 7. transmission unit; 71. motor; 72. transmission rod; 73. sliding sleeve; 74. shaft disc; 75. eccentric rod; 8. water outlet; 9. water outlet pipe; 10. water inlet pipe; 11. arc groove; 12. arc-shaped protrusion. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4The 3M rubber ring injection mold of this embodiment includes a lower mold 1 and an upper mold 2. The lower mold 1 is provided with a plurality of molding grooves 3. The bottom surface of the lower mold 1 is provided with a plurality of water troughs 4. A piston rod 5 is slidably connected in the water trough 4. A plurality of water inlet pipes 10 connected with the molding grooves 3 are installed in the lower mold 1. Two brackets 6 are fixedly connected to the bottom surface of the lower mold 1. A transmission unit 7 is installed between the two brackets 6. The lower end of the piston rod 5 extends outside the lower mold 1. The transmission unit 7 drives the piston rod 5 to move up and down in the water trough 4.

[0025] like Figure 1-4 As shown, the structure of the 3M rubber ring injection mold in the utility model is similar to the existing 3M rubber ring injection mold structure, such as the prior art CN210061858U. The main improvement of the utility model is that the rubber ring is cooled to speed up the injection time while ensuring the quality of the rubber ring molding; the lower mold 1 and the upper mold 2 in the utility model are both prior art. When the 3M rubber ring needs to be injection molded, the upper mold 2 descends and closes with the lower mold 1 to output the melted injection molding material into the molding groove 3. The injection molding material is plasticized through the molding groove 3. After the injection molded part fills the molding groove 3, cold water is transported to the water tank 4 through the water outlet pipe 9. After the cold water enters the water tank 4, it absorbs the heat of the injection molded part, cools the injection molded part, and makes the injection molded part cool and form quickly. At this time, the upper mold 2 can be raised to take out the injection molded part. At this time, the water tank 4 is full of cold water, and the water supply to the water inlet pipe 10 is stopped. The piston rod 5 is driven to rise through the transmission unit 7. The piston rod 5 pushes the cold water in the water tank 4 into the water inlet pipe 10, and then the water in the water tank 4 is discharged. After the water tank 4 is discharged, the piston rod 5 is lowered again. At this time, the melted injection molding material can enter the molding tank 3 again, which can avoid the cold water from cooling and solidifying the melted injection molding material before it fills the molding tank 3, thereby ensuring the quality of the rubber ring molding.

[0026] like Figure 3 As shown, a water outlet hole 8 is opened on the upper surface of the piston rod 5, and a water outlet pipe 9 connected with the water outlet hole 8 is installed on the outer wall of the lower end of the piston rod 5; the water transported to the water tank 4 through the water inlet pipe 10 is discharged through the water outlet pipe 8 and the water outlet pipe 9, and the outer wall of the water outlet pipe 9 can be fixed to the connected water pipe, so that the cold water discharged from the water inlet pipe 10 to the water tank 4 continues to flow, and the flowing water further improves the cooling effect on the injection molded parts. At the same time, when the piston rod 5 rises, the water in the water tank can be discharged from the water outlet hole 9.

[0027] like Figure 2 , 3As shown, the transmission unit 7 includes a motor 71 installed on the side wall of one of the brackets 6, a sliding sleeve 73 installed at the lower end of the piston rod 5, and a plurality of shaft discs 74 rotating on the adjacent side walls of the two brackets 6. The output end of the motor 71 is fixedly connected with a transmission rod 72, which passes through the two brackets 6 and is rotatably connected thereto. One end of the shaft disc 74 is passed through the outside of the bracket 6, and the end of the transmission rod 72 close to the motor 71 is transmission-connected to one of the adjacent shaft discs 74 through a transmission belt. The two adjacent shaft discs 74 are transmission-connected through a transmission belt. An eccentric rod 75 is fixedly connected between two adjacent shaft discs 74 in the horizontal direction. The plurality of eccentric rods 75 are respectively passed through a plurality of groups of sliding sleeves 73 arranged in the horizontal direction, and the eccentric rods 75 are slidingly connected to the inner wall of the sliding sleeve 73. When it is necessary to drain the water in the water tank 4, the motor 71 is started to work, the motor 71 drives the transmission rod 72 to rotate, and the transmission rod 72 drives the adjacent shaft disc 74 to rotate through the transmission belt. The shaft disc 74 is composed of a disc and a rotating shaft. Figure 2 and Figure 3 The two adjacent shaft discs 74 located on the side walls of the same bracket 6 are driven by a transmission belt. The rotating shaft discs 74 drive the eccentric rod 75 to rotate. The shaft discs 74 at both ends of the eccentric rod 75 support the eccentric rod 75. The eccentric rod 75 slides in the sliding sleeve 73. As the eccentric rod 75 rotates, the sliding sleeve 73 is driven to rise, and then the sliding sleeve 73 drives the piston rod 5 to rise and quickly squeeze the cold water in the water tank 4 out of the water outlet 8. Then the piston rod 5 drops again to make the water tank 4 store water.

[0028] Among them, the above-mentioned motor 71 can be purchased on the market. It is a mature technology and has been fully disclosed, so it is not repeated in the specification. The motor 71 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power line, and the main controller can be a conventional known device such as a computer that plays a control role.

[0029] like Figure 2 , 3 As shown, one end of the transmission rod 72 away from the motor 71 is connected to one of the adjacent shaft discs 74 through a transmission belt; the transmission rod 72 drives the shaft discs 74 on the side walls of the two brackets 6 to rotate, and then the shaft discs 74 on the side walls of the two brackets 6 are driven to rotate, so that the eccentric rod 75 rotates stably.

[0030] like Figure 1 , 3 As shown, the inner top wall of the water tank 4 is higher than the inner bottom surface of the molding tank 3, and the molding tank 3 is located outside the water tank 4; the cold water in the water tank 4 is located in the center of the molding tank 3, and the cold water can be transported to the inner middle part of the rubber ring injection molded part to improve the cooling effect on the injection molded part.

[0031] like Figure 3 , 4As shown, an arc groove 11 is provided on the upper end surface of the piston rod 5, and the middle of the arc groove 11 is the lowest point. An arc-shaped protrusion 12 is fixedly connected to the inner top wall of the water tank 4, and the arc-shaped protrusion 12 fits with the arc groove 11; the arc groove 11 on the upper surface of the piston rod 5 can guide the water in the water tank 4 to the water outlet 8, thereby quickly draining the water in the water tank 4, and when the piston rod 5 rises to the highest point, the arc groove 11 fits and contacts with the arc-shaped protrusion 12, thereby completely draining the cold water in the water tank 4, thereby improving practicality.

[0032] like Figure 1 , 3 As shown, the distance between the water tank 4 and the molding tank 3 is not greater than 4 cm; the distance between the molding tank 3 and the water tank 4 is small, thereby ensuring the cooling effect of the cold water in the water tank 4 on the injection molded parts in the molding tank 3.

[0033] Implementation steps in this embodiment: when it is necessary to perform injection molding of the 3M rubber ring, the upper mold 2 descends and closes with the lower mold 1, outputs the melted injection molding material into the molding groove 3, and the injection molding material is plasticized through the molding groove 3. After the injection molded part fills the molding groove 3, cold water is transported to the water tank 4 through the water outlet pipe 9, and the cold water is discharged through the water outlet pipe 8 in cooperation with the water outlet pipe 9, so that the water in the water tank 4 keeps flowing. After the cold water enters the water tank 4, it absorbs the heat of the injection molded part, cools the injection molded part, and makes the injection molded part cool and mold quickly. At this time, the upper mold 2 can be raised to take out the injection molded part. At this time, the water tank 4 is full of cold water, and the water supply to the water inlet pipe 10 is stopped, and the motor 71 is started to work, and the motor 71 drives the transmission rod 72 to rotate, and the transmission rod 72 drives the transmission belt The adjacent shaft disc 74 rotates, and the adjacent two shaft discs 74 located on the side wall of the same bracket 6 are driven by the transmission belt. The rotating shaft disc 74 drives the eccentric rod 75 to rotate. The shaft discs 74 at both ends of the eccentric rod 75 support the eccentric rod 75. The eccentric rod 75 slides in the sliding sleeve 73. As the eccentric rod 75 rotates, the sliding sleeve 73 is driven to rise, and then the sliding sleeve 73 drives the piston rod 5 to rise and quickly squeeze the cold water in the water tank 4 out of the water outlet 8. Then the piston rod 5 drops again to make the water storage position of the water tank 4. The water can now make the melted injection molding material enter the molding groove 3 again. There is no water in the water tank 4 at this time, which can avoid the cold water from cooling and solidifying the melted injection molding material before it fills the molding groove 3, thereby ensuring the quality of the rubber ring molding.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A 3M rubber ring injection mold, comprising a lower mold (1) and an upper mold (2), wherein the lower mold (1) is provided with a plurality of molding grooves (3), characterized in that: The bottom surface of the lower mold (1) is provided with a plurality of water grooves (4), a piston rod (5) is slidably connected in the water grooves (4), a plurality of water inlet pipes (10) connected to the molding grooves (3) are installed in the lower mold (1), two brackets (6) are fixedly connected to the bottom surface of the lower mold (1), a transmission unit (7) is installed between the two brackets (6), the lower end of the piston rod (5) extends outside the lower mold (1), and the transmission unit (7) drives the piston rod (5) to move up and down in the water grooves (4).

2. A 3M rubber ring injection mold according to claim 1, characterized in that: A water outlet hole (8) is provided on the upper surface of the piston rod (5), and a water outlet pipe (9) connected to the water outlet hole (8) is installed on the outer wall of the lower end of the piston rod (5).

3. A 3M rubber ring injection mold according to claim 2, characterized in that: The transmission unit (7) comprises a motor (71) mounted on the side wall of one of the brackets (6), a sliding sleeve (73) mounted on the lower end of the piston rod (5), and a plurality of shaft discs (74) rotatably mounted on the adjacent side walls of the two brackets (6); the output end of the motor (71) is fixedly connected with a transmission rod (72); the transmission rod (72) passes through the two brackets (6) and is rotatably connected thereto; one end of the shaft disc (74) is passed through the outside of the bracket (6); one end of the transmission rod (72) close to the motor (71) is transmission-connected to one of the adjacent shaft discs (74) through a transmission belt; the two adjacent shaft discs (74) are transmission-connected through the transmission belt; an eccentric rod (75) is fixedly connected between two adjacent shaft discs (74) in the transverse direction; the plurality of eccentric rods (75) are respectively passed through a plurality of groups of sliding sleeves (73) arranged transversely; and the eccentric rod (75) is slidably connected to the inner wall of the sliding sleeve (73).

4. A 3M rubber ring injection mold according to claim 3, characterized in that: One end of the transmission rod (72) away from the motor (71) is transmission-connected to one of the adjacent shaft discs (74) via a transmission belt.

5. A 3M rubber ring injection mold according to claim 3, characterized in that: The inner top wall of the water tank (4) is higher than the inner bottom surface of the forming tank (3), and the forming tank (3) is located outside the water tank (4).

6. A 3M rubber ring injection mold according to claim 3, characterized in that: The upper end surface of the piston rod (5) is provided with an arc groove (11), the middle of the arc groove (11) is the lowest point, and the inner top wall of the water tank (4) is fixedly connected with an arc convex block (12), and the arc convex block (12) fits with the arc groove (11).

7. The 3M rubber ring injection mold according to claim 1, characterized in that: The distance between the water tank (4) and the forming tank (3) is no more than 4 cm.

Images