Injection molding shell grinding device
By combining the telescopic rod and spring in the clamping assembly, the problem of irregular molds that cannot be fixed by existing clamps is solved, achieving stable fixing and efficient grinding of irregular molds.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-04-07
AI Technical Summary
Existing injection molded shell grinding jigs cannot effectively hold irregularly shaped molds, leading to increased limitations in their use.
The design employs a clamping assembly, including the cooperation of a telescopic rod and a spring. The irregular mold is fixed by the contraction of the clamping plate and the elasticity of the spring, and then polished by a motor-driven lead screw and a grinding disc.
It achieves stable fixation of irregular molds, expands the applicability of the fixture, and improves the flexibility and efficiency of the grinding device.
Smart Images

Figure CN224088664U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molded shell polishing technology, specifically to an injection molded shell polishing device. Background Technology
[0002] Injection molded parts refer to all injection molded products produced by injection molding machines, including various packaging materials and parts. They are mainly made of materials such as polyethylene or polypropylene with the addition of various organic solvents. After injection molding, the surface of the injection molded parts needs to be ground and polished, and they also need to be fixed during the grinding process.
[0003] The prior art patent with authorization announcement number CN213081131U discloses a jig for grinding injection molded housings, including a jig body and a clamping plate 1 disposed on the jig body. Rectangular sleeves are fixedly installed on the outer surfaces of both ends of the clamping plate 1, and an annular groove is formed on the inner surface of one end of the rectangular sleeve. A sliding sleeve 1 is fixedly installed inside the annular groove 1, and an optical axis 1 is slidably installed on the sliding sleeve 1. A clamping plate 2 is fixedly connected to one end of the optical axis 1, and a limit plate 1 is fixedly connected to the other end of the optical axis 1. Both clamping plates 1 and 2 are provided with protective units, which are assembled to protect the injection molded housing. A damping unit is provided on the rectangular sleeve. This jig for grinding injection molded housings, by movably installing two clamping plates 2 at both ends of the clamping plate 1 through the cooperation of the optical axis 1 and the sliding sleeve 1, allows the length of the entire clamping plate to be adjusted according to the actual workpiece length, thus significantly expanding the applicability of the jig body and making it highly practical.
[0004] However, the grinding fixture in the above-mentioned utility model still has the following disadvantages:
[0005] In the above-mentioned utility model, two clamping plates are movably installed at both ends of clamping plate one through the cooperation of optical shaft one and sliding sleeve one, so that the length of the entire clamping plate can be adjusted, which expands the applicability of the clamping body. However, this design can only fix some molds with fixed shapes and cannot fix irregular molds, which increases the limitation of the device's fixation.
[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0007] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a grinding device for injection molded shells.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A grinding device for injection molded shells, comprising:
[0010] The base plate has fixing plates fixedly connected to both sides of the rear end face of the upper end plate;
[0011] A fixed clamping assembly is connected to the upper end face of the base plate. The fixed clamping assembly includes: a pad plate, which is fixedly connected to the upper end face of the base plate. The upper end face of the base plate has sliding grooves on both sides. The front end face of the pad plate is fixedly connected to both sides of the pad plate. The inner end face of each of the uprights is fixedly connected to an electric telescopic rod. Two clamping assemblies are connected to the upper end face of the base plate.
[0012] Furthermore, the clamping assembly includes:
[0013] A clamping shell, wherein several clamping plates are slidably connected to the inner end face of the clamping shell;
[0014] Several limiting plates, all of which are fixedly connected to the inner end face of the clamping plate;
[0015] Several telescopic rods, one end of each telescopic rod is fixedly connected to a limiting plate, and the other end of each telescopic rod is fixedly connected to the inner end face of the clamping shell;
[0016] Several springs are fitted onto the telescopic rod.
[0017] A motor is fixedly connected to the outer side of one of the fixed plates, and a lead screw is rotatably connected between the fixed plates. The drive end of the motor is fixedly connected to the lead screw.
[0018] Furthermore, a threaded block is threadedly connected to the lead screw, an electric telescopic plate is fixedly connected to the upper end face of the threaded block, and a top plate is fixedly connected to the upper end face of the electric telescopic plate.
[0019] Furthermore, a second motor is fixedly connected to the front side of the upper end of the top plate, and a rotating shaft is rotatably connected to the front side of the lower end of the top plate, with the upper end of the rotating shaft fixedly connected to the drive end of the second motor.
[0020] Furthermore, a grinding disc is fixedly connected to the lower end of the rotating shaft.
[0021] The advantages of this invention compared to existing technologies are as follows:
[0022] The clamping assembly of this grinding device uses a telescopic rod and a spring. When an irregular mold comes into contact with the clamping plate during clamping, the corresponding telescopic rod retracts, and the spring releases its elastic force to fix the mold, thus minimizing the limitations of the device's use. Attached Figure Description
[0023] Figure 1 This is a perspective view of the injection molded shell grinding device of this utility model.
[0024] Figure 2 This is a perspective view of the fixing and clamping assembly of the injection molded shell grinding device of this utility model.
[0025] Figure 3 This is a half-sectional view of the clamping assembly of the injection molded shell grinding device of this utility model.
[0026] As shown in the figure: 1. Base plate; 2. Fixing plate; 3. Motor 1; 4. Lead screw; 5. Threaded block; 6. Electric telescopic plate; 7. Top plate; 8. Motor 2; 9. Rotating shaft; 10. Grinding disc; 11. Fixing clamping assembly; 1101. Pad; 1102. Slide groove; 1103. Column; 1104. Electric telescopic rod; 1105. Clamping assembly; 11051. Clamping shell; 11052. Clamping plate; 11053. Limiting plate; 11054. Telescopic rod; 11055. Spring. Detailed Implementation
[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.
[0028] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.
[0029] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0030] like Figures 1 to 3 As shown, the technical solution of this utility model is as follows: a grinding device for injection molded shells, comprising: a base plate 1 with fixed plates 2 fixedly connected to both sides of the rear of the upper end face; the base plate 1 enhances the stability of the equipment; a fixed clamping assembly 11 connected to the upper end face of the base plate 1; the fixed clamping assembly 11 includes: a pad 1101 fixedly connected to the upper end face of the base plate 1; sliding grooves 1102 are opened on both sides of the upper end face of the base plate 1 to facilitate clamping by the clamping assembly 1105; columns 1103 fixedly connected to both sides of the front end face of the pad 1101; electric telescopic rods 1104 fixedly connected to the inner end faces of the columns 1103; and two clamping assemblies 1105 connected to the upper end face of the base plate 1. The columns 1103 support and fix the electric telescopic rods 1104, and the electric telescopic rods 1104 push the front clamping assemblies 1105 to move.
[0031] like Figure 3As shown, the clamping assembly 1105 includes several clamping plates 11052 slidably connected to the inner end face of the clamping shell 11051. The front clamping shell 11051 is slidably connected to the slide groove 1102, and the rear clamping shell 11051 is fixedly connected to the pad 1101. Limiting plates 11053 are all fixedly connected to the inner end face of the clamping plates 11052 to prevent the clamping plates 11052 from popping out of the clamping shell 11051. One end of the telescopic rod 11054 is fixedly connected to the limiting plate 11053, and the other end of the telescopic rod 11054 is fixedly connected to the inner end face of the clamping shell 11051. Springs 11055 are all sleeved on the telescopic rod 11054. The springs 11055 and the telescopic rod 11054 cooperate to press the clamping plates 11052 to fix the mold.
[0032] like Figure 1 As shown, a motor 3 is fixedly connected to the outer side of a fixed plate 2 on one side. A lead screw 4 is rotatably connected between the fixed plates 2. The drive end of the motor 3 is fixedly connected to the lead screw 4, and the motor 3 provides power to rotate the lead screw 4. A threaded block 5 is threadedly connected to the lead screw 4. An electric telescopic plate 6 is fixedly connected to the upper end face of the threaded block 5. The movement of the threaded block 5 drives the electric telescopic plate 6 to move. A top plate 7 is fixedly connected to the upper end face of the electric telescopic plate 6. A motor 8 is fixedly connected to the front side of the upper end face of the top plate 7. A rotating shaft 9 is rotatably connected to the front side of the lower part of the top plate 7. The upper end of the rotating shaft 9 is fixedly connected to the drive end of the motor 8. A grinding disc 10 is fixedly connected to the lower end of the rotating shaft 9. The grinding disc 10 is used to grind the mold.
[0033] In practical use, the device is placed in a suitable position, and then the mold is placed between the clamping components 1105. Then, the electric telescopic rod 1104 is activated to clamp the mold. When the mold contacts the clamping plate 11052, the corresponding clamping plate 11052 retracts, while simultaneously squeezing the telescopic rod 11054 and the spring 11055. When the spring 11055 is squeezed, it releases its elasticity and continuously squeezes and fixes the mold through the pressure plate 11052. Then, the motor 1 is activated to drive the lead screw 4 to rotate, so that the threaded block 5 moves to a suitable position. The electric telescopic plate 6 is activated to drive the top plate 7 to descend to a suitable position. The motor 2 is activated to drive the rotating shaft 9 to rotate, so that the grinding disc 10 releases the mold for grinding.
[0034] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.
[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A grinding device for injection molded shells, characterized in that, include: The base plate (1) has fixing plates (2) fixedly connected to both sides of the rear end face of the upper end of the base plate (1); A fixed clamping assembly (11) is connected to the upper end face of the base plate (1). The fixed clamping assembly (11) includes: a pad (1101), which is fixedly connected to the upper end face of the base plate (1). The upper end face of the base plate (1) has sliding grooves (1102) on both sides. The front end face of the pad (1101) is fixedly connected to two columns (1103). The inner end face of the columns (1103) is fixedly connected to an electric telescopic rod (1104). The upper end face of the base plate (1) is connected to two clamping assemblies (1105).
2. The injection molded shell grinding device according to claim 1, characterized in that: The clamping assembly (1105) includes: A clamping shell (11051) has several clamping plates (11052) slidably connected to its inner end face; Several limiting plates (11053) are fixedly connected to the inner end face of the clamping plate (11052); Several telescopic rods (11054), one end of each telescopic rod (11054) is fixedly connected to a limiting plate (11053), and the other end of each telescopic rod (11054) is fixedly connected to the inner end face of the clamping shell (11051); Several springs (11055) are fitted onto the telescopic rod (11054).
3. The injection molded shell grinding device according to claim 1, characterized in that: A motor (3) is fixedly connected to the outside of the fixed plate (2) on one side, and a lead screw (4) is rotatably connected between the fixed plates (2). The drive end of the motor (3) is fixedly connected to the lead screw (4).
4. The injection molded shell grinding device according to claim 3, characterized in that: A threaded block (5) is threaded onto the lead screw (4), an electric telescopic plate (6) is fixedly connected to the upper end face of the threaded block (5), and a top plate (7) is fixedly connected to the upper end face of the electric telescopic plate (6).
5. The injection molded shell grinding device according to claim 4, characterized in that: A motor (8) is fixedly connected to the front side of the upper end of the top plate (7), and a rotating shaft (9) is rotatably connected to the front side of the lower end of the top plate (7). The upper end of the rotating shaft (9) is fixedly connected to the driving end of the motor (8).
6. The injection molded shell grinding device according to claim 5, characterized in that: A grinding disc (10) is fixedly connected to the lower end of the rotating shaft (9).
Citation Information
Patent Citations
Clamp for grinding injection molding shell
CN213081131U