Positioning and pushing device for plunger machining

Abstract

The utility model belongs to the field of plunger machining, and particularly relates to a positioning and pushing device for plunger machining, which comprises a support, a mounting port is arranged at the top end of the support, a driving motor is sleeved in the mounting port, the output end of the driving motor is fixedly connected with a pneumatic push rod, and one end of the pneumatic push rod is fixedly connected with a mounting ring. A penetrating moving opening is formed in the inner bottom wall of the mounting ring, a positioning assembly is arranged on the surface of the moving opening, the positioning assembly comprises track plates fixedly connected to the side face of the mounting ring in an axial symmetry mode, extrusion blocks are slidably connected to the surfaces of the track plates in an axial symmetry mode, and rubber sheets are fixedly connected to the top ends of the extrusion blocks. By arranging the track plate, the extrusion blocks, the rubber sheets and the forward and reverse screw rods of the positioning assembly, the forward and reverse screw rods are manually screwed to drive the extrusion blocks on the two sides to synchronously approach and move along the track plate, the plunger is mechanically clamped and positioned through the rubber sheets, the clamping failure problem caused by electrical structure faults is avoided, and the clamping stability and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of plunger processing, specifically a positioning and pushing device for plunger processing. Background Technology

[0002] A plunger sleeve is the sleeve covering the outside of the plunger inside the engine's fuel injection pump. The fuel injection pump plunger pair refers to the paired plunger and plunger sleeve, and is one of the three precision pairs in a diesel engine's fuel system. The plunger reciprocates at high speed inside the plunger sleeve under the action of the fuel pump cam. Since the large end face of the plunger sleeve is a sealing end face, the machining requirements for the end face of the plunger sleeve are relatively high.

[0003] In the prior art, such as in publication number CN210413584U, a positioning device for processing plunger sleeves based on pneumatic transmission is disclosed. It includes a device body, an auxiliary box fixedly connected to the inner top wall of the device body, a fixed bracket fixedly connected to the inner wall of the auxiliary box, a motor fixedly connected to one end of the fixed bracket, a connecting shaft fixedly connected to the output shaft of the motor through a coupling, a fan blade fixedly connected to the outer wall of the connecting shaft, and an air outlet pipe fixedly connected to the bottom of the auxiliary box.

[0004] While the aforementioned patent, through its hydraulic cylinder, hydraulic rod, push rod, rack, positioning bracket, connecting rod, first movable shaft, rotating gear, second movable shaft, clamping block, and second top block, facilitates the positioning of plunger sleeves, solving problems such as loosening, low efficiency, and potential dangers associated with manual positioning of plunger sleeves, thus providing convenience and meeting people's needs, the use of a complex electrical structure for fixing the plunger is susceptible to failure, potentially leading to plunger detachment due to sudden malfunction, resulting in unstable clamping performance. Furthermore, it lacks a quick flipping operation, requiring plunger disassembly and flipping, making the process cumbersome. Therefore, to address these issues, a positioning and pushing device for plunger processing is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, which utilize complex electrical structures to fix the plunger, this invention addresses the problem that these structures are prone to failure, potentially causing the plunger to detach due to sudden malfunctions, resulting in unstable clamping performance. Furthermore, it does not allow for quick flipping operations, requiring the plunger to be disassembled and flipped, which is cumbersome. This invention proposes a positioning and pushing device for plunger processing.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The positioning and pushing device for plunger processing of this utility model includes a bracket, the top of the bracket is provided with an installation port and a drive motor is sleeved inside the installation port, the output end of the drive motor is fixedly connected to a pneumatic push rod and one end of the pneumatic push rod is fixedly connected to an installation ring, the inner bottom wall of the installation ring is provided with a through moving port and a positioning component is provided on the surface of the moving port, and an operating component is provided at the bottom of the bracket.

[0007] The positioning component includes a track plate that is fixedly connected to the side of the mounting ring in an axisymmetric manner. Each surface of the track plate is slidably connected to an extrusion block in an axisymmetric manner, and a rubber sheet is fixedly connected to the top of the extrusion block. The side of the extrusion block is provided with a threaded hole, and a positive and negative screw is threaded inside the threaded hole.

[0008] The operating component includes a connecting rod fixedly connected to the top of the bracket. One end of the connecting rod is fixedly connected to a foot switch, and the other end of the foot switch is fixedly connected to a sleeve. A spring is sleeved inside the sleeve, and a sliding rod is fixedly connected to the top of the spring. The sliding rod is slidably connected inside the sleeve.

[0009] Preferably, the track plate of the positioning component is symmetrically fixed on both sides of the mounting ring, the extrusion block is slidably connected to the surface of the track plate and driven to move by the positive and negative screws, and the rubber sheet is fixed to the top of the extrusion block and extends into the interior of the mounting ring.

[0010] Preferably, the connecting rod of the operating component is fixed to the side wall of the bracket, and the foot switch is elastically connected to the spring in the sleeve through the slide rod to control the start and stop of the drive motor.

[0011] Preferably, the two ends of the positive and negative lead screws are rotatably connected to the threaded holes of the two extrusion blocks through bearings, and the rotation direction of the positive and negative lead screws matches the movement direction of the extrusion blocks.

[0012] Preferably, the bottom end of the spring is fixedly connected to the bottom surface inside the sleeve, and the top end of the slide rod is fixedly connected to the bottom of the foot switch to form an elastic reset structure.

[0013] Preferably, the side of the extrusion block is provided with a guide block, and the surface of the track plate is provided with a guide groove that slides with the guide block to limit the movement path of the extrusion block.

[0014] The advantages of this utility model are:

[0015] 1. This utility model uses a positioning component consisting of a track plate, extrusion blocks, rubber sheets, and positive and negative screws. By manually turning the positive and negative screws, the extrusion blocks on both sides are driven to move synchronously closer to each other along the track plate. The rubber sheets mechanically clamp and position the plunger, avoiding clamping failure caused by electrical structure faults and improving clamping stability and reliability.

[0016] 2. This utility model utilizes a foot switch, spring, and slide rod in conjunction with a drive motor and pneumatic push rod. Pressing the foot switch triggers the drive motor, causing the mounting ring and plunger to rotate and flip. Foot control frees up the hands, and the spring automatically resets the plunger, enabling rapid flipping without disassembly, significantly improving processing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0019] Figure 2 This is a schematic diagram of the positioning component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the operating component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Bracket; 2. Drive motor; 3. Pneumatic push rod; 4. Mounting ring; 5. Positioning assembly; 51. Track plate; 52. Extrusion block; 53. Rubber sheet; 54. Positive and negative lead screws; 6. Operating assembly; 61. Connecting rod; 62. Step switch; 63. Sleeve; 64. Spring; 65. Slide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1-4As shown, a positioning and pushing device for plunger processing includes a bracket 1. The top of the bracket 1 has an installation port, and a drive motor 2 is sleeved inside the installation port. The output end of the drive motor 2 is fixedly connected to a pneumatic push rod 3, and one end of the pneumatic push rod 3 is fixedly connected to an installation ring 4. The inner bottom wall of the installation ring 4 has a through moving port, and a positioning component 5 is provided on the surface of the moving port. An operating component 6 is provided at the bottom of the bracket 1. The positioning component 5 includes a track plate 51 fixedly connected to the side of the installation ring 4 in an axisymmetric manner. Each surface of the track plate 51 is slidably connected to an extrusion block 52, and a rubber sheet 53 is fixedly connected to the top of the extrusion block 52. The side of the extrusion block 52 has a threaded hole, and a positive and negative screw rod 54 is threaded inside the threaded hole.

[0025] During operation, in the specific implementation of the positioning component 5, after the operator places the plunger inside the mounting ring 4, he manually rotates the positive and negative screws 54. Through the reverse threads at both ends, the two pressing blocks 52 on both sides move synchronously towards each other along the guide groove of the track plate 51. The rubber sheet 53 on the top of the pressing block 52 moves upward and tightly abuts against the outer wall of the plunger. The elastic deformation of the rubber sheet 53 increases the friction force and avoids scratching the surface of the plunger, thus completing the mechanical clamping and positioning. This structure replaces electrical clamping with pure mechanical transmission, eliminates the risk of electrical failure, and ensures that the clamping process is stable and reliable.

[0026] Furthermore, the operating component 6 includes a connecting rod 61 fixedly connected to the top of the bracket 1. One end of the connecting rod 61 is fixedly connected to a foot switch 62, and the other end of the foot switch 62 is fixedly connected to a sleeve 63. A spring 64 is sleeved inside the sleeve 63, and a sliding rod 65 is fixedly connected to the top of the spring 64. The sliding rod 65 is slidably connected inside the sleeve 63.

[0027] During operation, in the specific implementation of the operating component 6, pressing down on the foot switch 62 during processing causes the slide rod 65 to move down along the sleeve 63 and compress the internal spring 64. At the same time, it triggers the drive motor 2 to start, and drives the mounting ring 4 and the clamped plunger to rotate 180 degrees through the pneumatic push rod 3 to achieve flipping. After releasing the foot, the spring 64 rebounds and pushes the slide rod 65 up to reset, the foot switch 62 returns to its initial position and cuts off the power to the drive motor 2. This foot-controlled operation eliminates the need for manual adjustment of the plunger position, enabling rapid flipping during processing and significantly improving processing efficiency.

[0028] Furthermore, the two ends of the positive and negative lead screws 54 are rotatably connected to the threaded holes of the two extrusion blocks 52 through bearings, and the rotation direction of the positive and negative lead screws 54 is matched with the movement direction of the extrusion blocks 52.

[0029] During operation, the two ends of the positive and negative lead screws 54 are rotatably connected to the threaded holes of the extrusion blocks 52 through bearings. When operating, rotating the positive and negative lead screws 54 causes the reverse threads at both ends to engage with the threaded holes of the extrusion blocks 52, driving the extrusion blocks 52 on both sides to move synchronously in opposite directions along the track plate 51. The movement path and spacing of the extrusion blocks 52 are precisely controlled by the rotation direction of the positive and negative lead screws 54. This structure achieves symmetrical clamping through mechanical transmission, ensuring that the plunger is subjected to uniform force and the clamping position is centered, avoiding plunger displacement caused by unilateral force application, improving clamping accuracy and processing stability. At the same time, the lead screw transmission has a self-locking characteristic, eliminating the need for additional fixing devices after clamping, thus simplifying the operation steps.

[0030] Furthermore, the bottom end of the spring 64 is fixedly connected to the bottom surface inside the sleeve 63, and the top end of the slide rod 65 is fixedly connected to the bottom of the foot switch 62 to form an elastic reset structure.

[0031] During operation, the bottom end of spring 64 is fixed to the bottom surface inside sleeve 63, and the top end of slide rod 65 is fixed to the bottom of foot switch 62. When foot switch 62 is pressed, slide rod 65 moves down along sleeve 63 to compress spring 64, drive motor 2 is powered on and starts, and drives plunger to flip. After foot switch 62 is released, spring 64 elastically recovers and pushes slide rod 65 upward, so that foot switch 62 automatically resets and cuts off power to drive motor 2. This elastic reset structure ensures that the switch returns to its original position quickly after operation, avoiding false triggering or motor overload caused by continuous pressing. At the same time, the instantaneous response of foot control operation combined with automatic power-off function reduces the frequency of manual intervention and improves processing continuity and safety.

[0032] Working principle: The drive motor 2 is connected to the mounting port at the top of the bracket 1. The output end of the drive motor 2 is connected to the pneumatic push rod 3 and drives the mounting ring 4 to rotate. After the plunger is placed in the moving port of the mounting ring 4, the operator manually rotates the positive and negative screws 54 of the positioning component 5. Through the reverse threads at both ends, the two pressing blocks 52 on both sides move synchronously towards each other along the guide groove of the track plate 51. The rubber sheet 53 on the top of the pressing block 52 moves up and clamps the plunger. During the processing, the foot presses the foot switch 62 of the operating component 6, pushes the slide rod 65 down in the sleeve 63 and compresses the spring 64, triggering the drive motor 2 to start, driving the pneumatic push rod 3 and the mounting ring 4 to rotate 180 degrees to flip the plunger. After releasing the foot switch 62, the spring 64 rebounds and pushes the slide rod 65 up to reset. The foot switch 62 cuts off the power to the drive motor 2 and stops rotating, completing the entire process of positioning, pushing and flipping the plunger.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning and pushing device for plunger machining, characterized in that: The bracket (1) includes a mounting port at the top of the bracket (1) and a drive motor (2) is fitted inside the mounting port. A pneumatic push rod (3) is fixedly connected to the output end of the drive motor (2) and a mounting ring (4) is fixedly connected to one end of the pneumatic push rod (3). A through moving port is opened on the inner bottom wall of the mounting ring (4) and a positioning component (5) is provided on the surface of the moving port. An operating component (6) is provided at the bottom end of the bracket (1). The positioning component (5) includes a track plate (51) fixedly connected to the side of the mounting ring (4) in an axisymmetric manner. Each surface of the track plate (51) is slidably connected with an extrusion block (52), and a rubber sheet (53) is fixedly connected to the top of the extrusion block (52). The side of the extrusion block (52) is provided with a threaded hole, and a positive and negative screw rod (54) is threaded inside the threaded hole. The operating component (6) includes a connecting rod (61) fixedly connected to the top of the bracket (1). One end of the connecting rod (61) is fixedly connected to a foot switch (62), and the other end of the foot switch (62) is fixedly connected to a sleeve (63). A spring (64) is sleeved inside the sleeve (63), and a sliding rod (65) is fixedly connected to the top of the spring (64). The sliding rod (65) is slidably connected inside the sleeve (63).

2. The positioning and pushing device for plunger processing according to claim 1, characterized in that: The track plate (51) of the positioning component (5) is symmetrically fixed on both sides of the mounting ring (4). The extrusion block (52) is slidably connected to the surface of the track plate (51) and driven to move by the positive and negative screws (54). The rubber sheet (53) is fixed to the top of the extrusion block (52) and extends into the interior of the mounting ring (4).

3. The positioning and pushing device for plunger processing according to claim 1, characterized in that: The connecting rod (61) of the operating component (6) is fixed to the side wall of the bracket (1), and the foot switch (62) is elastically connected to the spring (64) in the sleeve (63) through the slide rod (65) to control the start and stop of the drive motor (2).

4. The positioning and pushing device for plunger processing according to claim 1, characterized in that: The two ends of the positive and negative lead screw (54) are rotatably connected to the threaded holes of the two extrusion blocks (52) through bearings, and the rotation direction of the positive and negative lead screw (54) matches the movement direction of the extrusion blocks (52).

5. The positioning and pushing device for plunger processing according to claim 1, characterized in that: The bottom end of the spring (64) is fixedly connected to the bottom surface inside the sleeve (63), and the top end of the slide rod (65) is fixedly connected to the bottom of the foot switch (62) to form an elastic reset structure.

6. The positioning and pushing device for plunger processing according to claim 1, characterized in that: The side of the extrusion block (52) is provided with a guide block, and the surface of the track plate (51) is provided with a guide groove that slides with the guide block to limit the movement path of the extrusion block (52).

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