Stroke adjusting mechanism for filling cylinder of forming machine
By adjusting the motor drive and adjusting the combination of worm and gear, combined with reducer and bevel gear transmission, the automatic adjustment of the stroke of the filling cylinder is achieved, solving the problem of filling amount that cannot be adapted to different product structures in the prior art, and achieving accurate floating plate filling amount adjustment.
Patent Information
- Application Number
- CN202422506250.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing filling cylinders cannot achieve automated adjustment of strokes, resulting in the height position and filling amount of the floating plates being unable to meet the structural needs of different products.
The combination of the adjustment motor drive adjustment worm and adjustment gear is adopted to realize the rotation and axial movement of the piston rod through meshing transmission and threaded connection, and combined with the dual-axis output reducer and bevel gear transmission, the precise adjustment of the filling cylinder stroke is achieved.
It realizes automatic adjustment of the stroke of the filling cylinder, saving time and effort, ensuring the precise adjustment of the filling amount of the floating plate, and adapting to the structural needs of different products.
Smart Images
Figure CN223241763U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a filling cylinder stroke adjustment mechanism for a forming machine, belonging to the technical field of powder metallurgy. Background Art
[0002] Powder metallurgy forming machines are mainly used for forming powder metallurgy products. First, metal powder is placed in the mold cavity of the forming machine, and then the upper punch die and the lower punch die are matched to compress the metal powder into shape.
[0003] When the middle model cavity moves upward to form a certain powder filling space, the lower floating punch also needs to be filled upward to a certain position, so that the powder filling cavity forms a stepped filling cavity similar to the shape of the product, so as to achieve the size of the final product. The height position that the floating punch needs to reach is achieved by the filling cylinder driving the floating plate (installed with a floating punch), which is the filling adjustment.
[0004] As can be seen from the above, the height of the floating plate determines the step position of the powder metallurgy product, while the stroke of the filling cylinder determines the stroke of the floating plate. Depending on the product structure, the floating plate's stroke requires adaptive adjustment, meaning that the stroke of the filling cylinder's piston rod needs to be adjusted accordingly. However, existing filling cylinders cannot automatically adjust their stroke. Utility Model Content
[0005] The purpose of the utility model is to provide a filling cylinder stroke adjustment mechanism for a forming machine in response to the above-mentioned deficiencies in the prior art, thereby solving the problem in the prior art that the filling cylinder cannot automatically adjust the stroke (expansion and contraction amount of the piston rod).
[0006] The technical solution of the utility model is as follows:
[0007] A filling cylinder stroke adjustment mechanism for a forming machine is characterized in that it includes an adjustment motor, an adjustment worm, and an adjustment gear; the adjustment motor drives the adjustment worm, the adjustment gear engages with the adjustment worm for transmission, and the center axis of the adjustment gear is perpendicular to the center axis of the adjustment worm; the adjustment gear is cylindrical, and its center hole is provided with an internal thread, and the adjustment gear is sleeved on the piston rod of the filling cylinder and threadedly connected to it.
[0008] In the above scheme, the adjustment motor drives the adjustment worm and drives the adjustment gear to rotate. At the same time, the adjustment gear and the piston rod are threadedly connected, so that the adjustment gear rotates and moves axially along the piston rod. After adjustment, the distance between the upper end face of the adjustment gear and the lower cover of the filling cylinder is used as the telescopic stroke of the piston rod, which is also the filling amount of the floating plate. The filling amount of the floating plate can be adjusted in time according to the structure of the workpiece. It is electrically adjusted and does not require manual adjustment, saving time and effort.
[0009] Furthermore, the adjustment gear uses straight teeth instead of helical teeth, and the meshing center distances of the upper and lower adjustment gears are consistent; the helix angle of the adjustment worm is less than or equal to 6°, and the modules of the adjustment gear and the adjustment worm are equal; the adjustment worm drives the adjustment gear, and the two cooperate to achieve adjustment of the filling cylinder stroke.
[0010] The above solution can ensure that the adjustment gear can move up and down smoothly while rotating, and can ensure that the adjustment gear can move up and down smoothly during the lifting process of the floating plate, avoiding the interference of the adjustment worm on the adjustment gear during the up and down movement.
[0011] Furthermore, the adjusting worm and adjusting worm wheel are placed in corresponding adjusting boxes, which are arranged in pairs and respectively installed at the diagonal positions of the fixed plate. A floating plate is equipped with two filling cylinders, which are respectively located directly above the two adjusting boxes.
[0012] Furthermore, the two filling cylinders utilize single-piston-rod cylinders, and both cylinder bodies are connected to a common floating plate. The piston rods of the two filling cylinders extend downward, respectively, into corresponding adjustment boxes and connect to corresponding adjustment gears. The adjustment box comprises four side panels and a top panel, forming a bottom-open box structure. The top panel is provided with a through-hole for the piston rod to pass through.
[0013] In the above scheme, the top plate of the adjustment box can limit the adjustment gear; after the adjustment worm and the adjustment gear complete the adjustment of the expansion and contraction amount of the filling cylinder, the distance between the upper end surface of the adjustment gear and the inner wall of the top plate of the adjustment box is the stroke of the piston rod of the filling cylinder, which is also the filling amount of the floating plate.
[0014] Furthermore, the adjustment motor is connected to a reducer, and the reducer adopts a dual-axis output reducer; the two output shafts of the dual-axis output reducer are respectively connected to transmission shafts, one transmission shaft is driven to connect to an adjustment worm through a pair of bevel gears, and the other transmission shaft is driven to connect to an extension shaft through a pair of bevel gears, and the extension shaft is driven to connect to another adjustment worm.
[0015] The above solution uses a single adjustment motor to adjust the stroke of both filling cylinders. Each floating plate is connected by two filling cylinders to achieve upward filling movement. Stroke adjustment of both filling cylinders is achieved through an adjustment worm drive adjustment gear. The two adjustment worms are connected by a drive shaft, bevel gears, and a dual-axis output reducer. The dual-axis output reducer is connected to the adjustment motor. When the adjustment motor rotates, it transmits the rotational motion to the two adjustment worms in two directions, achieving synchronous adjustment of the two adjustment gears.
[0016] The utility model has a simple structure and can adjust the extension amount of the piston rod of the filling cylinder, thereby realizing adjustable stroke of the filling cylinder and realizing accurate adjustment of the stroke to adjust the filling amount of the filling cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of the adjustment mechanism in Example 1;
[0018] Figure 2 Schematic diagram of the connection between the adjustment mechanism and the filling cylinder in Example 2;
[0019] Figure 3 Schematic diagram of filling the cylinder in Example 2;
[0020] Figure 4 This is a schematic diagram of adjusting the box in Example 2;
[0021] Figure 5 Schematic diagram of the connection between the adjustment mechanism and the filling cylinder in Example 3;
[0022] In the figure: adjusting worm 1, adjusting gear 2, dual-axis output reducer 3, adjusting box 4, fixed plate 5, floating plate 6, transmission shaft 7, bevel gear 8, extension shaft 9, piston rod of filling cylinder 10, filling cylinder 11, top plate 12, through hole 13, upper piston rod 14, lower piston rod 15, inlet and outlet holes 16. DETAILED DESCRIPTION
[0023] Example 1
[0024] A filling cylinder stroke adjustment mechanism for a forming machine includes: an adjustment worm 1, an adjustment gear 2, a dual-axis output reducer 3, an adjustment motor, and an adjustment box 4; two adjustment boxes are respectively installed at opposite corners of a fixed plate 5, and the adjustment worm and adjustment worm wheel are placed in the corresponding adjustment boxes; two filling cylinders are respectively located directly above the two adjustment boxes and are commonly connected to a floating plate 6.
[0025] like Figure 1 As shown, the adjustment motor is connected to the dual-axis output reducer 3, and the two output shafts of the dual-axis output reducer are respectively connected to the transmission shaft 7. One transmission shaft is driven to connect to the first adjustment worm 1 through a pair of bevel gears 8, and the other transmission shaft is driven to connect to an extension shaft 9 through a pair of bevel gears 8, and the extension shaft is then driven to connect to the second adjustment worm 1.
[0026] The piston rod 10 of the filling cylinder is provided with an external thread, the adjusting gear is cylindrical, and its center hole is provided with an internal thread. The piston rod of the filling cylinder extends downward into the adjustment box and passes through the center hole of the adjusting gear. The piston rod of the filling cylinder is threadedly connected to the center hole of the adjusting gear.
[0027] The adjustment gear has straight teeth with consistent meshing center distances. The helix angle of the adjustment worm is less than or equal to 6°, and the modules of the adjustment gear and adjustment worm are equal. The adjustment motor operates so that the adjustment worm drives the adjustment gear, causing the adjustment gear to rotate and move axially along the piston rod to adjust the filling cylinder stroke.
[0028] Example 2
[0029] like Figure 2 、 Figure 3 The two filling cylinders 11 are single piston rod cylinders, and the two cylinder bodies are connected to a floating plate; the piston rods 10 of the two filling cylinders are respectively connected downward to the corresponding adjustment gears.
[0030] like Figure 4 As shown, the adjustment box body 4 is composed of four side panels and a top panel 12 to form a box structure with an open bottom. The top panel is provided with a through hole 13 for the piston rod to pass through.
[0031] After the filling cylinder stroke is adjusted, the distance between the upper end surface of the adjustment gear and the inner wall of the top plate of the adjustment box is the stroke of the filling cylinder piston rod, which is also the filling amount of the floating plate. Figure 2 As shown in the figure, the filling volume of the filling cylinder on the right is adjusted to 45mm. The filling cylinder is activated, driving the cylinder body to move the floating plate up and down.
[0032] Example 3
[0033] like Figure 5 As shown, the two filling cylinders 11 are dual-piston-rod cylinders, and the adjustment box 4 is composed of four side panels, forming a box structure with upper and lower openings. The two cylinders are fixed to the tops of the two adjustment boxes, and the two upper piston rods 14 are connected to a floating plate. The two lower piston rods 15 extend into the adjustment box and are connected to the adjustment gear.
[0034] After the filling cylinder stroke is adjusted, the distance between the upper end surface of the adjustment gear and the lower cover of the filling cylinder is the stroke of the filling cylinder piston rod, which is also the filling amount of the floating plate. Figure 5 As shown in the figure, the filling volume of the filling cylinder on the right is adjusted to 45mm. The filling cylinder is actuated to drive the upper piston rod to lift the floating plate.
Claims
1. A filling cylinder stroke adjustment mechanism for a forming machine, characterized in that: It includes an adjusting motor, an adjusting worm, and an adjusting gear; the adjusting motor drives the adjusting worm, the adjusting gear engages with the adjusting worm for transmission, and the central axis of the adjusting gear is perpendicular to the central axis of the adjusting worm; the adjusting gear is cylindrical, and its center hole is provided with an internal thread, and the adjusting gear is sleeved on the piston rod of the filling cylinder and threadedly connected to it.
2. A filling cylinder stroke adjustment mechanism for a forming machine according to claim 1, characterized in that: The adjusting gear adopts straight teeth and has the same module as the adjusting worm, and the helix angle of the adjusting worm is less than or equal to 6°.
3. A filling cylinder stroke adjustment mechanism for a forming machine according to claim 2, characterized in that: An adjustment box is provided below the filling cylinder, and the adjustment box is mounted on a fixed plate. The filling cylinder and the adjustment box are arranged in pairs, and the adjustment worm and the adjustment worm wheel are placed in corresponding adjustment boxes.
4. A filling cylinder stroke adjustment mechanism for a forming machine according to claim 3, characterized in that: The two filling cylinders are single piston rod cylinders, and the two cylinder bodies are connected to a floating plate; the piston rods of the two filling cylinders are downward, respectively extending into the corresponding adjustment boxes and connected to the corresponding adjustment gears.
5. A filling cylinder stroke adjustment mechanism for a forming machine according to claim 4, characterized in that: The adjustment box body is composed of four side plates and a top plate to form a box body structure with an open bottom, and a through hole for the piston rod to pass through is provided on the top plate.
6. A filling cylinder stroke adjustment mechanism for a forming machine according to claim 5, characterized in that: The two adjustment boxes are respectively located at the diagonal positions of the fixed plate. The adjustment motor is connected to a reducer, which is a dual-axis output reducer. The two output shafts of the dual-axis output reducer are respectively connected to transmission shafts, one transmission shaft is connected to an adjustment worm through a pair of bevel gears, and the other transmission shaft is connected to an extension shaft through a pair of bevel gears, and the extension shaft is driven and connected to another adjustment worm.