Sprue trimming device of injection molding sealing ring

Abstract

The utility model discloses a sprue trimming device for an injection molding sealing ring, which comprises a working table, balls are uniformly connected to the top end of the working table at equal intervals in a sliding manner, a first motor is mounted in the middle of one side of the top end of the working table, and a tray is mounted at the output shaft end of the first motor; the middle position of the top end of the tray is fixedly connected with a fixing column. The pressing mechanism is arranged on one side of the trimming mechanism, a poking block on the pressing mechanism is pulled, the poking block can extrude a spring through a movable block, meanwhile, the movable block can drive a connecting rod to pull the trimming mechanism to move, and when a sealing ring body is fixed to the outer portion of a fixing column, the trimming mechanism can be trimmed by loosening the poking block. And due to the counter-acting force of extrusion of the spring, a grinding roller on the finishing mechanism can be pushed to be tightly attached to the outer portion of the sealing ring body through the movable block and the connecting rod, and meanwhile the sealing ring body is prevented from being damaged due to too large stress in the finishing process.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding sealing ring processing, in particular to a gate trimming device for an injection molding sealing ring. Background Art

[0002] Due to the special application of some sealing rings, no notches or protrusions are allowed on their surface. Therefore, general injection molded sealing rings need to be trimmed at the gate to maintain the product quality and appearance at the gate, remove excess material, and prevent residues from affecting the sealing and stability of the sealing ring in subsequent use.

[0003] A gate trimming device for an injection molded sealing ring disclosed in Chinese patent publication number CN213828239U has a simple structure. By adjusting the distance between the grinding head and the limit slide by adjusting the screw, it is possible to avoid repairing flat surfaces or notches on the product surface, thereby ensuring the integrity of the cylindrical surface of the product. It has high flexibility in use, and uses the grinding head for grinding, which saves time and effort, has high grinding accuracy, and ensures product quality. However, the gate trimming device has low flexibility in use and cannot accurately control the force between the grinding component and the sealing ring, which may result in frequent sealing ring trimming, affecting the safety and stability of the sealing ring in subsequent use. Utility Model Content

[0004] The purpose of the utility model is to provide a gate trimming device for an injection molding sealing ring to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gate trimming device for an injection molding sealing ring, comprising a workbench, the top of the workbench is evenly and evenly connected with ball bearings, a first motor is installed in the middle position of one side of the top of the workbench, a tray is installed at the output shaft end of the first motor, a fixed column is fixedly connected in the middle position of the top of the tray, a limiting mechanism is arranged inside the fixed column, a sealing ring body is sleeved on the outside of the fixed column, a pad is fixedly connected in the middle position of one side of the top of the workbench, a pressing mechanism is arranged on the top of the pad, and a trimming mechanism is arranged on one side of the pressing mechanism.

[0006] Preferably, the limiting mechanism includes an inflation port installed at the middle position of the top end of the fixed column, and the bottom end of the inflation port is fixedly connected to an air pipe.

[0007] Preferably, an airbag connected to an air delivery pipe is provided at the bottom end of the interior of the fixing column, and a rubber pad fitted with the airbag is fixedly connected to the exterior of the fixing column.

[0008] Preferably, the pressing mechanism comprises a hollow block fixedly connected to the top of the cushion block, and a toggle block is slidably connected to one side of the top of the hollow block.

[0009] Preferably, the bottom end of the toggle block is fixedly connected to a movable block that slides in the hollow block, one side of the movable block is fixedly connected to a spring, and the side of the movable block away from the spring is fixedly connected to a connecting rod.

[0010] Preferably, the trimming mechanism includes a fixing frame fixedly connected to one side of the connecting rod, a second motor is installed at the middle position of the top end of the fixing frame, and a grinding roller is installed at the output shaft end of the second motor.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This type of gate trimming device for an injection molded sealing ring has a pressing mechanism provided on one side of the trimming mechanism. By pulling the toggle block on the pressing mechanism, the toggle block can squeeze the spring through the movable block, and at the same time, the movable block can drive the connecting rod to pull the trimming mechanism to move. When the sealing ring body is fixed to the outside of the fixed column, by loosening the toggle block, the reaction force of the squeezed spring can push the grinding roller on the trimming mechanism to cling to the outside of the sealing ring body through the movable block and the connecting rod, thereby preventing the sealing ring body from being damaged due to excessive force during the trimming process, thereby ensuring the safety and stability of the use of the gate trimming device for the sealing ring.

[0013] 2. The gate trimming device of this injection molding sealing ring is provided with a rubber pad on the outside of the fixed column. When the sealing ring body is sleeved on the outside of the rubber pad and the inflation port at the top of the fixed column is opened, the external inflator can inflate the airbag in the fixed column through the inflation port. At this time, the inflation of the airbag can push the rubber pad close to the inner wall of the sealing ring body, completing the stable limiting work of the sealing ring body. The operation is simple and convenient, and the limiting work of injection molding sealing rings of various caliber specifications can be performed quickly and stably, thereby improving the overall applicability of the trimming device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the fixed column of the utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the pressing mechanism of the present invention;

[0017] Figure 4 This is a schematic diagram of the top structure of the workbench of the utility model.

[0018] In the figure: 1. workbench; 101. ball bearing; 102. first motor; 2. tray; 3. fixed column; 4. limit mechanism; 401. inflation port; 402. air pipe; 403. airbag; 5. rubber pad; 6. sealing ring body; 7. pad; 8. pressing mechanism; 801. hollow block; 802. toggle block; 803. movable block; 804. spring; 805. connecting rod; 9. finishing mechanism; 901. fixed frame; 902. second motor; 903. grinding roller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0020] See also Figure 1-4 , this utility model provides two technical solutions:

[0021] Embodiment 1, a gate trimming device for an injection molding sealing ring, includes a workbench 1, the top of the workbench 1 is evenly and evenly connected with a ball 101, a first motor 102 is installed in the middle position of one side of the top of the workbench 1, the output shaft end of the first motor 102 is installed with a tray 2, the middle position of the top of the tray 2 is fixedly connected with a fixed column 3, a limiting mechanism 4 is arranged inside the fixed column 3, and a sealing ring body 6 is sleeved on the outside of the fixed column 3, a pad 7 is fixedly connected to the middle position of one side of the top of the workbench 1, a pressing mechanism 8 is arranged on the top of the pad 7, and a trimming mechanism 9 is arranged on one side of the pressing mechanism 8, the ball 101 can reduce the friction force generated by the rotation of the tray 2 on the top of the workbench 1, and at the same time, the start of the first motor 102 can drive the tray 2 and the top fixed column 3 and the sealing ring body 6 to rotate rapidly.

[0022] The pressing mechanism 8 includes a hollow block 801 fixedly connected to the top of the pad 7, a toggle block 802 is slidably connected to one side of the top of the hollow block 801, and the bottom end of the toggle block 802 is fixedly connected to a movable block 803 sliding in the hollow block 801, and a spring 804 is fixedly connected to one side of the movable block 803, and a connecting rod 805 is fixedly connected to the side of the movable block 803 away from the spring 804. The force generated by the contact between the trimming mechanism 9 and the sealing ring body 6 can be transmitted to the movable block 803 through the connecting rod 805, and the movable block 803 squeezes the spring 804 on one side, and due to the reaction force of the squeezing of the spring 804, the grinding roller 903 on the trimming mechanism 9 can be pushed to fit the outside of the sealing ring body 6 through the movable block 803 and the connecting rod 805.

[0023] The trimming mechanism 9 includes a fixed frame 901 fixedly connected to one side of the connecting rod 805, and a second motor 902 is installed in the middle position of the top of the fixed frame 901. A grinding roller 903 is installed at the output shaft end of the second motor 902. When the second motor 902 is started, it can drive the grinding roller 903 to rotate, so that the grinding roller 903 can trim the gate on the sealing ring body 6.

[0024] The main difference between the second embodiment and the first embodiment is that:

[0025] A gate trimming device for an injection molded sealing ring, wherein the limiting mechanism 4 includes an inflation port 401 installed in the middle position of the top of a fixed column 3, the bottom end of the inflation port 401 is fixedly connected to an air supply pipe 402, the bottom end of the interior of the fixed column 3 is provided with an airbag 403 connected to the air supply pipe 402, the outside of the fixed column 3 is fixedly connected to a rubber pad 5 that fits the airbag 403, the inflation port 401 is opened to allow an external inflator to inflate the airbag 403, at this time the expansion of the airbag 403 can push the rubber pad 5 close to the inner wall of the sealing ring body 6, completing the limiting work of the sealing ring body 6, and at the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

[0026] When the embodiment of the present application is in use: pull the toggle block 802 on the hollow block 801, the toggle block 802 can squeeze the spring 804 through the movable block 803, and at the same time the movable block 803 can drive the trimming mechanism 9 to move through the connecting rod 805. At this time, the sealing ring body 6 is set on the outside of the fixed column 3, and the inflation port 401 at the top of the fixed column 3 is opened, and the external inflator can inflate the airbag 403 in the fixed column 3. At this time, the expansion of the airbag 403 can push the rubber pad 5 to close to the sealing ring The inner wall of the main body 6 completes the limiting of the sealing ring main body 6, and at the same time releases the hollow block 801. Due to the reaction force of the spring 804 being squeezed, the grinding roller 903 on the trimming mechanism 9 can be pushed to the outer wall of the sealing ring main body 6 through the movable block 803 and the connecting rod 805. At this time, the first motor 102 is started to drive the tray 2 and the sealing ring main body 6 at the top of the fixed column 3 to rotate, and cooperates with the second motor 902 to drive the grinding roller 903 to rotate, so that the gate trimming work of the sealing ring main body 6 can be effectively performed.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate trimming device for an injection molded sealing ring, comprising a workbench (1), characterized in that: The top of the workbench (1) is evenly and evenly connected to a ball bearing (101), a first motor (102) is installed at the middle position of one side of the top of the workbench (1), the output shaft end of the first motor (102) is installed with a tray (2), a fixed column (3) is fixedly connected to the middle position of the top of the tray (2), a limiting mechanism (4) is provided inside the fixed column (3), a sealing ring body (6) is provided on the outside of the fixed column (3), a cushion block (7) is fixedly connected to the middle position of one side of the top of the workbench (1), a pressing mechanism (8) is provided at the top of the cushion block (7), and a trimming mechanism (9) is provided on one side of the pressing mechanism (8).

2. The gate trimming device for an injection molded sealing ring according to claim 1, characterized in that: The limiting mechanism (4) comprises an air filling port (401) installed at the middle position of the top end of the fixing column (3), and the bottom end of the air filling port (401) is fixedly connected to an air delivery pipe (402).

3. The gate trimming device for an injection molded sealing ring according to claim 1, characterized in that: The bottom end of the interior of the fixing column (3) is provided with a safety airbag (403) in communication with the air delivery pipe (402), and the exterior of the fixing column (3) is fixedly connected with a rubber pad (5) in contact with the safety airbag (403).

4. The gate trimming device for an injection molded sealing ring according to claim 1, characterized in that: The pressing mechanism (8) comprises a hollow block (801) fixedly connected to the top of the cushion block (7), and a toggle block (802) is slidably connected to one side of the top of the hollow block (801).

5. The gate trimming device for an injection molded sealing ring according to claim 4, characterized in that: The bottom end of the toggle block (802) is fixedly connected to a movable block (803) that slides in the hollow block (801); one side of the movable block (803) is fixedly connected to a spring (804); and the side of the movable block (803) away from the spring (804) is fixedly connected to a connecting rod (805).

6. The gate trimming device for an injection molded sealing ring according to claim 5, characterized in that: The trimming mechanism (9) comprises a fixed frame (901) fixedly connected to one side of the connecting rod (805), a second motor (902) is installed at the middle position of the top end of the fixed frame (901), and a grinding roller (903) is installed at the output shaft end of the second motor (902).

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