Positioning device of hydraulic stretcher

Abstract

The utility model relates to the field of hydraulic stretching machines, and discloses a positioning device of a hydraulic stretching machine, which comprises a base, a placing plate is fixedly arranged at the top of the base, limiting rods are fixedly arranged at four corners of the top of the placing plate, and a placing block is arranged at the top of the placing plate. And the bottom of the placing block and the top of the limiting rod are fixedly installed, a hydraulic cylinder is fixedly installed at the top of the placing block, and a pressing plate is fixedly installed at the telescopic end of the hydraulic cylinder. Through mutual cooperation of a first clamping ring, a second clamping ring, a fixing block, a rotating rod, a gear and a toothed plate, when an object needs to be limited, the rotating rod can be rotated to drive the toothed plate to move towards the inner side at the same time, the toothed plate moves towards the inner side to drive the fixing block to move towards the inner side, and therefore the object can be limited. The fixing block moves towards the bottom to drive the first clamping ring and the second clamping ring to move towards the sides close to each other, and therefore objects on the containing plate can be limited.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic stretching machines, and in particular to a positioning device for a hydraulic stretching machine. Background Technology

[0002] A hydraulic stretching machine is a mechanical device that uses liquid pressure to stretch and shape objects. It is based on Pascal's principle, which states that the pressure in a closed liquid can be transmitted in all directions without changing magnitude. The hydraulic system transmits the pressure of hydraulic oil to the hydraulic cylinder, which drives the piston to move, thereby generating a strong pulling force to stretch the workpiece.

[0003] In modern industrial production, hydraulic stretching presses are widely used in metal processing, rubber product molding, plastic processing and other industries due to their powerful tensile output and high-precision control capabilities. As industrial production continues to increase its requirements for product quality and processing precision, the precise positioning of workpieces during the operation of hydraulic stretching presses has become particularly critical.

[0004] Currently, most hydraulic stretching machines on the market rely on mechanical stops or simple limit switches for positioning. This method is simple in structure but has low positioning accuracy, making it difficult to meet the needs of high-precision processing. After long-term use, mechanical stops are prone to wear, leading to positioning deviations and affecting the consistency of product quality. Moreover, the adjustment process of such positioning devices is cumbersome. When changing workpieces of different specifications, a lot of time is required to readjust the positioning parameters, which reduces production efficiency. Therefore, a positioning device for hydraulic stretching machines is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a positioning device for a hydraulic stretching machine, which aims to improve the existing technology where mechanical stops are prone to wear and tear after long-term use, leading to positioning deviations that affect product quality consistency. Moreover, the adjustment process of such positioning devices is cumbersome, and when changing workpieces of different specifications, a lot of time is required to readjust the positioning parameters, which reduces production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A positioning device for a hydraulic stretching machine includes a base, a placement plate fixedly installed on the top of the base, limit rods fixedly installed at the four corners of the top of the placement plate, a placement block provided on the top of the placement plate, the bottom of the placement block and the top of the limit rods fixedly installed, a hydraulic cylinder fixedly installed on the top of the placement block, a pressure plate fixedly installed at the telescopic end of the hydraulic cylinder, the pressure plate and the limit rods being slidably installed, and a limit assembly provided on the top of the placement plate.

[0008] As a further description of the above technical solution:

[0009] The limiting component includes a first retaining ring and a second retaining ring. A fixing block is fixedly installed at the bottom of the first retaining ring and the second retaining ring. A rotating rod is rotatably installed at the top of the inner wall of the placement plate. A gear is fixedly installed at the bottom of the rotating rod. Two sets of toothed plates are provided at the bottom of the placement plate. The toothed plates mesh with the gears. The outer side of the toothed plates and the inner side of the fixing block are fixedly installed.

[0010] As a further description of the above technical solution:

[0011] An electric push rod is fixedly installed on the top of the inner wall of the placement plate, and the telescopic end of the electric push rod and one side of one set of toothed plates are fixedly installed.

[0012] As a further description of the above technical solution:

[0013] A fixing plate is fixedly installed on the right side of the second retaining ring, and a fan is fixedly installed on the top of the fixing plate. A collection bag is detachably attached to the right end of the fan via a cable tie, and a three-way pipe is connected to the other end of the fan.

[0014] As a further description of the above technical solution:

[0015] The surface of the three-way pipe is connected to three sets of air inlet pipes, and a reinforcing block is fixedly installed on the top of the placement plate. The surface of the reinforcing block and the surface of the air inlet pipe are fixedly installed.

[0016] As a further description of the above technical solution:

[0017] A protective cover is fixedly installed on the top of the inner wall of the placement plate, and the bottom of the electric push rod is fixedly installed on the bottom of the inner wall of the protective cover.

[0018] As a further description of the above technical solution:

[0019] Protective pads are provided on the right side of the first retaining ring and the left side of the second retaining ring, and the protective pads are detachably installed to the first retaining ring and the second retaining ring respectively by bolts.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, through the cooperation of the first retaining ring, the second retaining ring, the fixing block, the rotating rod, the gear, and the toothed plate, when it is necessary to limit the object, the rotating rod can be rotated. The rotation of the rotating rod drives the toothed plate to move inward at the same time. The movement of the toothed plate inward drives the fixing block to move inward. The movement of the fixing block to the bottom drives the first retaining ring and the second retaining ring to move closer to each other, thereby limiting the object on the placement plate.

[0022] In this invention, the electric push rod is designed so that when the electric push rod is activated, the telescopic end of the electric push rod drives one set of toothed plates to move. The movement of one set of toothed plates drives the gear to rotate, and the rotation of the gear drives the other set of toothed plates to move. The movement of the toothed plates drives the fixed block to move inward, and the movement of the fixed block inward drives the first retaining ring and the second retaining ring to move closer to each other, thereby limiting the position of the object. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the base of this utility model;

[0024] Figure 2 This is a bottom view of the placement plate of this utility model;

[0025] Figure 3 This is a schematic diagram of the bottom structure of the placement plate of this utility model;

[0026] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0028] Legend:

[0029] 1. Base; 2. Placement plate; 3. Limiting rod; 4. Placement block; 5. Hydraulic cylinder; 6. Pressure plate; 7. Limiting assembly; 71. First retaining ring; 72. Second retaining ring; 73. Fixing block; 74. Rotating rod; 75. Gear; 76. Tooth plate; 77. Electric push rod; 78. Fixing plate; 79. Fan; 710. Collection bag; 711. T-shaped pipe; 712. Air inlet pipe; 713. Reinforcing block; 8. Protective cover; 9. Protective pad. Detailed Implementation

[0030] 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 protection scope of the present utility model.

[0031] Reference Figure 1-5This utility model provides an embodiment of a positioning device for a hydraulic stretching machine, comprising a base 1, a placement plate 2 fixedly installed on the top of the base 1, limit rods 3 fixedly installed at the four corners of the top of the placement plate 2, a placement block 4 provided on the top of the placement plate 2, the bottom of the placement block 4 and the top of the limit rods 3 fixedly installed, a hydraulic cylinder 5 fixedly installed on the top of the placement block 4, a pressure plate 6 fixedly installed at the telescopic end of the hydraulic cylinder 5, the pressure plate 6 and the limit rods 3 slidably installed, and a limit assembly 7 provided on the top of the placement plate 2. First, the object to be positioned can be placed on the top of the placement plate 2, at which time the object is limited by the limit assembly 7. Then, the hydraulic cylinder 5 can be activated, and the telescopic end of the hydraulic cylinder 5 drives the pressure plate 6 to move to the bottom. The movement of the pressure plate 6 to the bottom can perform a pressing operation on the object.

[0032] Reference Figure 1-5The limiting component 7 includes a first retaining ring 71 and a second retaining ring 72. A fixing block 73 is fixedly installed at the bottom of the first retaining ring 71 and the second retaining ring 72. A rotating rod 74 is rotatably installed on the top of the inner wall of the placement plate 2. A gear 75 is fixedly installed at the bottom of the rotating rod 74. Two sets of toothed plates 76 are provided at the bottom of the placement plate 2. The toothed plates 76 mesh with the gears 75. The outer side of the toothed plates 76 and the inner side of the fixing block 73 are fixedly installed. Through the mutual cooperation of the first retaining ring 71, the second retaining ring 72, the fixing block 73, the rotating rod 74, the gear 75, and the toothed plates 76, when it is necessary to limit the object, the rotating rod 74 can be rotated. The rotation drives the toothed plate 76 to move inward simultaneously. The inward movement of the toothed plate 76 drives the fixing block 73 to move inward. The fixing block 73 moves to the bottom, causing the first retaining ring 71 and the second retaining ring 72 to move closer to each other, thus limiting the position of the object on the placement plate 2. An electric push rod 77 is fixedly installed on the top of the inner wall of the placement plate 2. The telescopic end of the electric push rod 77 is fixedly installed on one side of one set of toothed plates 76. By activating the electric push rod 77, the telescopic end of the electric push rod 77 drives one set of toothed plates 76 to move. The movement of one set of toothed plates 76 drives the gear 75 to rotate. The gear 75 rotates... The movement of the toothed plate 76 causes another set of toothed plates 76 to move. The movement of the toothed plate 76 causes the fixing block 73 to move inward. The inward movement of the fixing block 73 causes the first retaining ring 71 and the second retaining ring 72 to move closer to each other, thereby limiting the object. A fixing plate 78 is fixedly installed on the right side of the second retaining ring 72. A fan 79 is fixedly installed on the top of the fixing plate 78. A collection bag 710 is detachably attached to the right end of the fan 79 via a cable tie. The other end of the fan 79 is connected to a three-way pipe 711. Through the cooperation of the fixing plate 78, the fan 79, the collection bag 710, and the three-way pipe 711, when it is necessary to clean impurities from the object, the fan 79 can move in a controlled manner. Then the blower 79 can be started. The blower 79 transports impurities on the object to the collection bag 710 through the three-way pipe 711, thereby cleaning the dust on the object. The surface of the three-way pipe 711 is connected to three sets of air inlet pipes 712. A reinforcing block 713 is fixedly installed on the top of the placement plate 2. The surface of the reinforcing block 713 is fixedly installed on the surface of the air inlet pipe 712. Through the cooperation of the air inlet pipe 712 and the reinforcing block 713, when the blower 79 is working, the impurities in the air inlet pipe 712 are sucked into the blower 79. Moreover, the reinforcing block 713 can prevent the air inlet pipe 712 from being too heavy and breaking.

[0033] Reference Figure 1-5A protective cover 8 is fixedly installed on the top of the inner wall of the placement plate 2. The bottom of the electric push rod 77 is fixedly installed on the bottom of the inner wall of the protective cover 8. The protective cover 8 can protect the gear 75 and the toothed plate 76, thereby preventing impurities from entering the gear 75 or the toothed plate 76 and causing the gear 75 or the toothed plate 76 to jam. Protective pads 9 are provided on the right side of the first retaining ring 71 and the left side of the second retaining ring 72. The protective pads 9 are detachably installed on the first retaining ring 71 and the second retaining ring 72 respectively by bolts. The protective pads 9 can increase the protection of the object and prevent the first retaining ring 71 and the second retaining ring 72 from scratching the object when limiting it.

[0034] Working principle: First, the object to be positioned can be placed on the top of the placement plate 2. Then, the electric push rod 77 is activated. The telescopic end of the electric push rod 77 drives one set of toothed plates 76 to move. The movement of one set of toothed plates 76 drives the gear 75 to rotate. The rotation of the gear 75 drives the other set of toothed plates 76 to move. The movement of the toothed plates 76 drives the fixing block 73 to move inward. The movement of the fixing block 73 inward drives the first retaining ring 71 and the second retaining ring 72 to move closer to each other, thereby limiting the object. After the object is limited, the fan 79 can be activated. The fan 79 draws the dust on the surface of the object into the three-way pipe 711 through the air inlet pipe 712. The three-way pipe 711 then transports the dust into the fan 79. The fan 79 then transports the dust into the collection bag 710, thus completing the limiting and dust removal of the object. Then, the hydraulic cylinder 5 can be activated. The telescopic end of the hydraulic cylinder 5 drives the pressure plate 6 to move to the bottom. The movement of the pressure plate 6 to the bottom can perform a pressing operation on the object.

[0035] Finally, it should be noted that the above description is only 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for a hydraulic stretching machine, comprising a base (1), characterized in that: A placement plate (2) is fixedly installed on the top of the base (1). Limiting rods (3) are fixedly installed at the four corners of the top of the placement plate (2). A placement block (4) is provided on the top of the placement plate (2). The bottom of the placement block (4) and the top of the limiting rod (3) are fixedly installed. A hydraulic cylinder (5) is fixedly installed on the top of the placement block (4). A pressure plate (6) is fixedly installed on the telescopic end of the hydraulic cylinder (5). The pressure plate (6) and the limiting rod (3) are slidably installed. A limiting component (7) is provided on the top of the placement plate (2).

2. The positioning device for a hydraulic stretching machine according to claim 1, characterized in that: The limiting component (7) includes a first retaining ring (71) and a second retaining ring (72). A fixing block (73) is fixedly installed at the bottom of the first retaining ring (71) and the second retaining ring (72). A rotating rod (74) is rotatably installed on the top of the inner wall of the placement plate (2). A gear (75) is fixedly installed at the bottom of the rotating rod (74). Two sets of toothed plates (76) are provided at the bottom of the placement plate (2). The toothed plates (76) and the gears (75) mesh. The outer side of the toothed plates (76) and the inner side of the fixing block (73) are fixedly installed.

3. The positioning device for a hydraulic stretching machine according to claim 2, characterized in that: An electric push rod (77) is fixedly installed on the top of the inner wall of the placement plate (2), and the telescopic end of the electric push rod (77) and one side of one of the toothed plates (76) are fixedly installed.

4. The positioning device for a hydraulic stretching machine according to claim 2, characterized in that: A fixing plate (78) is fixedly installed on the right side of the second retaining ring (72), and a fan (79) is fixedly installed on the top of the fixing plate (78). A collection bag (710) is detachably attached to the right end of the fan (79) via a cable tie, and a three-way pipe (711) is connected to the other end of the fan (79).

5. The positioning device for a hydraulic stretching machine according to claim 4, characterized in that: The surface of the three-way pipe (711) is connected to three sets of air inlet pipes (712), and a reinforcing block (713) is fixedly installed on the top of the placement plate (2). The surface of the reinforcing block (713) and the surface of the air inlet pipe (712) are fixedly installed.

6. The positioning device for a hydraulic stretching machine according to claim 3, characterized in that: A protective cover (8) is fixedly installed on the top of the inner wall of the placement plate (2), and the bottom of the electric push rod (77) and the bottom of the inner wall of the protective cover (8) are fixedly installed.

7. The positioning device for a hydraulic stretching machine according to claim 2, characterized in that: Protective pads (9) are provided on the right side of the first retaining ring (71) and the left side of the second retaining ring (72). The protective pads (9) are detachably installed on the first retaining ring (71) and the second retaining ring (72) respectively by bolts.

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