Anti-fracture piston rod connecting structure

Abstract

The utility model relates to a connecting structure, belongs to the technical field of piston rods, and particularly relates to a fracture-preventing piston rod connecting structure which comprises a piston body, a mounting groove is formed in the piston body, and the fracture-preventing piston rod connecting structure is characterized in that a piston rod is arranged in the mounting groove; when the piston rod needs to be replaced, the protective cover is rotated to be separated from the piston rod along with rotation, then the rack is pushed to move towards the outer side to be away from the gear, the rack and the gear are not meshed any more, then the rotary knob is rotated to drive the gear to rotate, the rotating column rotates along with the gear, the clamping groove is driven to rotate, and the clamping groove meets the clamping plate; and under the action of the first spring, the clamping plate moves towards the inner side, the clamping plate is embedded into the clamping groove, at the moment, the clamping plate completely enters the piston rod, the piston rod can be pulled out of the piston body and replaced, the piston rod can be conveniently detached and replaced through the device, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a piston rod technical field, specifically a piston rod connecting structure of preventing fracture. BACKGROUND

[0002] The piston and piston rod connecting structure is one of the structures of injection molding machine, when the strength of the piston connecting structure is low in the process of using, the piston rod connecting structure is prone to fracture, so a piston rod connecting structure of preventing fracture is needed.

[0003] The utility model discloses a kind of piston and piston rod connecting structures for preventing piston rod fracture, including piston body, the inner cavity of the piston body is provided with limiting slot, the inner cavity bottom of the limiting slot is provided with shock-absorbing spring, the inner cavity side wall top of the limiting slot is provided with limiting block;Piston rod, the inner cavity of the piston rod is inserted in the inner cavity of limiting slot, the inner cavity of the piston rod is provided with reinforcing core, the outer wall of the piston rod is provided with anticorrosive coating, the outer wall of the anticorrosive coating is provided with wear layer, its structure is reasonable, by being provided with reinforcing core in the inner cavity of piston rod, being provided with anticorrosive coating and wear layer on the surface of piston rod, improve the structural strength, corrosion resistance and wear resistance of device, prolong service life, in addition, by being provided with limiting slot in the inner cavity of piston body, shock-absorbing spring is provided in the limiting slot inner cavity, reduce the impact force in impact process, prevent fracture.

[0004] In the above technical scheme, when the piston rod is used for a long time, in order to prevent the piston rod from being broken due to internal aging, it needs to be replaced, and the device connects the piston body and the piston rod by means of the riding seam screw and the limiting ring, so that the piston rod is not convenient to disassemble and replace, resulting in that the practicability of the device is low.

[0005] Based on this, the present application provides a piston rod connecting structure for preventing fracture. UTILITY MODEL CONTENTS

[0006] In order to solve the above technical problems, the utility model provides a piston rod connecting structure for preventing fracture, which can drive the gear to rotate by the knob, the rotating column rotates, the clamping plate is embedded in the clamping groove, at this time the clamping plate completely enters the piston rod, the piston rod can be pulled out of the piston body, and the piston rod can be replaced, so that the device is convenient for disassembling and replacing the piston rod, and the practicability of the device is improved.

[0007] The technical solution for achieving the purpose of the utility model is as follows: a piston rod connecting structure for preventing fracture, including a piston body, an installation slot is formed in the piston body, characterized in that: a piston rod is arranged in the installation slot, and further including;

[0008] A rotating column is rotatably connected to a piston rod. The rotating column has four slots. Four locking plates are slidably connected inside the piston rod. Multiple limiting blocks are fixedly connected to the four locking plates. Multiple springs are fixedly connected to the multiple limiting blocks. The two ends of the multiple springs are fixedly connected to the piston rod. The four locking plates are adapted to the four slots.

[0009] Preferably, the piston rod has a groove, a gear is fixedly connected to the rotating column, and two racks are slidably connected in the groove, with the racks meshing with the gear.

[0010] Preferably, four springs are fixedly connected to the rack, and the four springs are respectively fixedly connected to the piston rod. A knob is fixedly connected to the gear.

[0011] Preferably, a protective cap is threaded onto the piston rod, and a sealing ring is provided at the connection between the piston body and the piston rod.

[0012] Preferably, the piston body is provided with a plurality of damping telescopic sleeves, and a plurality of connecting plates are fixedly connected to the plurality of damping telescopic sleeves respectively.

[0013] Preferably, multiple springs are fixedly connected to the multiple connecting plates, and the multiple springs are respectively fixedly connected to the piston body.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] In this invention, when the piston rod needs to be replaced, the protective cover is rotated, causing it to separate from the piston rod. This pushes the rack outwards, disengaging it from the gear and preventing them from meshing. Then, the knob is rotated, causing the gear to rotate, which in turn rotates the locking slot, bringing it into contact with the locking plate. Under the action of the spring, the locking plate moves inwards and embeds itself into the locking slot. At this point, the locking plate is fully inserted into the piston rod, allowing the piston rod to be pulled out of the piston body for replacement. This design facilitates the disassembly and replacement of the piston rod, improving its practicality. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the piston rod after it is separated from the piston body in this utility model;

[0019] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 4 This is a cross-sectional view of the piston rod in this utility model;

[0021] Figure 5 This is a cross-sectional view of the card plate in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Piston body; 2. Mounting groove; 3. Piston rod; 4. Sealing ring; 5. Rotating column; 6. Slot; 7. Clamping plate; 8. Limiting block; 9. Spring 1; 10. Groove; 11. Gear; 12. Rack; 13. Spring 2; 14. Knob; 15. Protective cover; 16. Damping telescopic sleeve; 17. Connecting plate; 18. Spring 3. Detailed Implementation

[0024] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0025] This utility model provides an improved piston rod connection structure to prevent breakage. The technical solution of this utility model is as follows:

[0026] like Figures 1-5 As shown, a piston rod connection structure to prevent breakage includes a piston body 1, an installation groove 2 is provided inside the piston body 1, the cross-section of the installation groove 2 is convex, characterized in that: a piston rod 3 is provided inside the installation groove 2, and further includes;

[0027] A rotating column 5 is rotatably connected to the piston rod 3. The rotating column 5 has four slots 6 arranged in a circular array around its center. Four locking plates 7 are slidably connected inside the piston rod 3, also arranged in a circular array around the center of the rotating column 5. Multiple limiting blocks 8 are fixedly connected to each of the four locking plates 7, with adjacent limiting blocks 8 being symmetrical about the locking plate 7. Multiple springs 9 are fixedly connected to the limiting blocks 8, with both ends of each spring 9 fixedly connected to the piston rod 3. The four locking plates 7 are adapted to the four slots 6. Rotating the rotating column 5 causes the locking plates 7 to move inward under the action of the springs 9, embedding them into the slots 6 and completely into the piston rod 3, facilitating the removal of the piston rod 3 from the mounting slot 2 for replacement.

[0028] Furthermore, such as Figures 2-4As shown, a groove 10 is provided on the piston rod 3, and a gear 11 is fixedly connected to the rotating column 5. Two racks 12 are slidably connected in the groove 10. The two racks 12 are symmetrical about the rotating column 5, and the racks 12 mesh with the gear 11.

[0029] Furthermore, such as Figures 2-4 As shown, four springs 13 are fixedly connected to the rack 12, and the four springs 13 are respectively fixedly connected to the piston rod 3. A knob 14 is fixedly connected to the gear 11. By rotating the knob 14, the gear 11 is driven to rotate, thereby driving the rotating column 5 to rotate.

[0030] Furthermore, such as Figures 1-4 As shown, a protective cover 15 is threaded onto the piston rod 3. The protective cover 15 is located at the top of the piston rod 3, and a sealing ring 4 is provided at the connection between the piston body 1 and the piston rod 3.

[0031] Furthermore, such as Figure 2 As shown, the piston body 1 is provided with multiple damping telescopic sleeves 16. The damping telescopic sleeves 16 are arranged in a circular array with the center of the piston rod 3 as the center. Multiple connecting plates 17 are fixedly connected to the multiple damping telescopic sleeves 16 respectively. The connecting plates 17 are located on the top of the damping telescopic sleeves 16.

[0032] Furthermore, such as Figure 2 As shown, multiple connecting plates 17 are fixedly connected to multiple springs 18, which are respectively fixedly connected inside the piston body 1 and sleeved on the outside of the damping telescopic sleeve 16.

[0033] The specific working method is as follows: When the piston rod 3 needs to be replaced, rotate the protective cover 15. Since the protective cover 15 is threaded onto the piston rod 3, the protective cover 15 separates from the piston rod 3 as it rotates. Then, push the rack 12 to move outward, so that the rack 12 moves away from the gear 11 and the two no longer mesh. Then, rotate the knob 14 to drive the gear 11 to rotate. The rotating column 5 rotates accordingly, driving the slot 6 to rotate, so that the slot 6 meets the plate 7. Under the action of the spring 9, the plate 7 moves inward and is inserted into the slot 6. At this time, the plate 7 is completely inserted into the piston rod 3, and the piston rod 3 can be pulled out from the piston body 1 for replacement. This makes the device easy to disassemble and replace the piston rod 3, improving the practicality of the device.

[0034] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A piston rod connection structure to prevent breakage, comprising a piston body (1), wherein an mounting groove (2) is provided inside the piston body (1), characterized in that: The mounting groove (2) is provided with a piston rod (3), and also includes; A rotating column (5) is rotatably connected to a piston rod (3). The rotating column (5) has four slots (6). Four locking plates (7) are slidably connected inside the piston rod (3). Multiple limiting blocks (8) are fixedly connected to the four locking plates (7). Multiple springs (9) are fixedly connected to the multiple limiting blocks (8). The two ends of the multiple springs (9) are fixedly connected to the piston rod (3). The four locking plates (7) are adapted to the four slots (6).

2. The piston rod connection structure for preventing breakage according to claim 1, characterized in that: The piston rod (3) has a groove (10) and a gear (11) is fixedly connected to the rotating column (5). Two racks (12) are slidably connected in the groove (10) and mesh with the gear (11).

3. The piston rod connection structure for preventing breakage according to claim 2, characterized in that: Four springs (13) are fixedly connected to the rack (12), and the four springs (13) are respectively fixedly connected to the piston rod (3). A knob (14) is fixedly connected to the gear (11).

4. The piston rod connection structure for preventing breakage according to claim 1, characterized in that: A protective cover (15) is threaded onto the piston rod (3), and a sealing ring (4) is provided at the connection between the piston body (1) and the piston rod (3).

5. The piston rod connection structure for preventing breakage according to claim 1, characterized in that: The piston body (1) is provided with a plurality of damping telescopic sleeves (16), and a plurality of connecting plates (17) are fixedly connected to the plurality of damping telescopic sleeves (16).

6. The piston rod connection structure for preventing breakage according to claim 5, characterized in that: Multiple springs (18) are fixedly connected to multiple connecting plates (17), and the multiple springs (18) are respectively fixedly connected to the piston body (1).

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