Anti-loosening connecting structure of oil cylinder connecting rod

Abstract

The utility model discloses an anti-loosening connecting structure of an oil cylinder connecting rod, and relates to the technical field of molds, the anti-loosening connecting structure comprises an oil cylinder, a sliding block seat is arranged at one end of the oil cylinder, a connecting rod is arranged between the sliding block seat and the oil cylinder, and a clamping mechanism is arranged at the end, close to the sliding block seat, of the connecting rod. A positioning hole is formed in the end, close to the oil cylinder, of the connecting rod, a piston rod is arranged in an inner cavity of the oil cylinder in a sliding mode, a bolt is arranged at the end, close to the connecting rod, of the piston rod, the bolt is installed in the positioning hole, and a fixing mechanism is further arranged between the piston rod and the connecting rod. The problem that when the piston rod of the oil cylinder reciprocates, the connecting rod rotates, so that the connecting rod and the oil cylinder loosen, and then movement is abnormal is solved.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to an anti-loosening connection structure for a hydraulic cylinder connecting rod. Background Technology

[0002] In the field of injection mold manufacturing, hydraulic cylinders are widely used to drive the movement of mold slides to achieve demolding of complex structures. This application greatly improves production efficiency and product quality, making the injection molding process more flexible and efficient. In actual operation, the connecting rod, as a key connecting component between the slide and the cylinder piston rod, directly affects the reliability and stability of the entire system. To ensure a stable connection between the connecting rod and the piston rod, existing technology uses headless bolts to fix the connecting rod and the piston rod together. While this method can improve the reliability of the connection, the reciprocating motion of the cylinder piston rod can cause the connecting rod to rotate, resulting in loosening between the connecting rod and the cylinder, and consequently, abnormal movement. Utility Model Content

[0003] To address the problem that the connecting rod rotates during the reciprocating motion of the hydraulic cylinder piston rod, causing the connecting rod to loosen from the hydraulic cylinder and resulting in abnormal movement, this application provides an anti-loosening connection structure for the hydraulic cylinder connecting rod.

[0004] The anti-loosening connection structure for a hydraulic cylinder connecting rod provided in this application adopts the following technical solution:

[0005] An anti-loosening connection structure for a hydraulic cylinder connecting rod includes a hydraulic cylinder, a slider seat at one end of the hydraulic cylinder, a connecting rod between the slider seat and the hydraulic cylinder, a snap-fit ​​mechanism at the end of the connecting rod near the slider seat, a positioning hole at the end of the connecting rod near the hydraulic cylinder, a piston rod slidably disposed in the inner cavity of the hydraulic cylinder, a bolt at the end of the piston rod near the connecting rod, the bolt being installed in the positioning hole, and a fixing mechanism between the piston rod and the connecting rod.

[0006] By adopting the above technical solution, the cylinder and the connecting rod are fixed by mounting bolts. The snap-fit ​​mechanism makes the connection between the connecting rod and the slider seat more secure, effectively preventing loosening caused by vibration or impact. The fixing mechanism makes the connection between the cylinder and the connecting rod more secure, and at the same time solves the problem that when the piston rod reciprocates, the connecting rod rotates, which causes the connecting rod and the cylinder to loosen, thus causing abnormal movement, thereby enhancing the reliability of the connection.

[0007] Optionally, the locking mechanism includes a slot formed on the slider seat near the end of the connecting rod, a locking block disposed in the slot, and a connecting post fixed on the locking block near the end of the hydraulic cylinder, wherein the connecting post is integrally formed on the connecting rod.

[0008] By adopting the above technical solution, a firm connection between the connecting rod and the slider seat is achieved through the snap-fit ​​cooperation between the snap-fit ​​block and the snap-fit ​​slot. The connection method is more convenient, the assembly process is simplified, and the assembly cost is reduced.

[0009] Optionally, the fixing mechanism includes a connecting ring coaxially sleeved on the outside of the piston rod and a plurality of pins fixed on the connecting ring. The connecting rod has a mounting hole at one end near the connecting ring, and the pins are fixed in the mounting hole.

[0010] By adopting the above technical solution, the connecting rod is fixed by inserting a pin into the mounting hole, preventing the connecting rod from rotating and improving the overall stability of the equipment. The installation method is simple and convenient, improving maintenance efficiency. The mounting hole provides precise positioning for the pin, improving assembly reliability.

[0011] Optionally, guide blocks are fixed on both sides of the slider seat, and guide grooves are provided on both sides of the slider seat, with the guide grooves slidingly connected to the guide blocks.

[0012] By adopting the above technical solution, the setting of guide block and guide groove can effectively limit the movement trajectory of slider seat, reduce the shaking and offset of slider seat during movement, and improve the stability of slider seat sliding.

[0013] Optionally, a limiting protrusion is provided at one end of the connecting ring near the connecting rod, and a limiting groove is provided on the end wall of the connecting rod to engage and fix with the limiting protrusion. Both the limiting protrusion and the limiting groove are inclined.

[0014] By adopting the above technical solution, the combination of the limiting protrusion and the limiting groove can provide a more stable connection and effectively prevent the connecting rod from rotating. The inclined setting can increase the contact area between the limiting protrusion and the limiting groove, and improve the connection strength between the two.

[0015] Optionally, the connecting rod has several limiting grooves on the side near the slider seat, and a limiting block is provided outside the limiting groove. The end of the limiting block away from the oil cylinder is fixed on the slider seat.

[0016] By adopting the above technical solution, the setting of the limiting block plays a limiting role for the connecting rod, realizing a reliable connection between the connecting rod and the slider seat, thereby ensuring the stability of the connecting rod and the slider seat during the sliding process.

[0017] Optionally, the end of the pin furthest from the connecting ring is conical.

[0018] By adopting the above technical solution, the conical design can be inserted into the mounting hole more easily, achieving higher positioning accuracy. During insertion, the taper achieves self-locking, thus providing a more stable connection. The conical pin design can withstand larger axial and radial loads, while achieving axial position stability through elastic deformation. It can effectively resist vibration and impact, reduce wear, and extend service life.

[0019] Optionally, a rubber ring is provided at one end of the connecting ring near the connecting rod.

[0020] By adopting the above technical solution, the rubber ring can evenly distribute the stress between the connecting ring and the connecting rod, avoid stress concentration, improve the strength and reliability of the connection, prevent loosening caused by vibration, and ensure the stability of the connection.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The hydraulic cylinder and connecting rod are fixed by mounting bolts. The snap-fit ​​mechanism makes the connection between the connecting rod and the slider seat more secure, effectively preventing loosening caused by vibration or impact. The fixing mechanism makes the connection between the hydraulic cylinder and the connecting rod more secure. At the same time, it can solve the problem that when the piston rod reciprocates, the connecting rod will rotate, which will cause the connecting rod and the hydraulic cylinder to loosen, thus causing abnormal movement. This enhances the reliability of the connection.

[0023] 2. By engaging the snap-fit ​​block with the slot, a secure connection is achieved between the connecting rod and the slider seat, making the connection more convenient, simplifying the assembly process, and reducing assembly costs;

[0024] 3. By inserting pins into the mounting holes, the connecting rod is fixed to prevent rotation and improve the overall stability of the equipment. The installation method is simple and convenient, improving maintenance efficiency. The mounting holes provide precise positioning for the pins, improving assembly reliability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an overall schematic diagram of the anti-loosening connection structure of the hydraulic cylinder connecting rod in the embodiments of this application.

[0027] Figure 2 This is an exploded view of the anti-loosening connection structure of the hydraulic cylinder connecting rod in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the fixing mechanism in the embodiments of this application.

[0029] Reference numerals in the attached drawings: 1. Hydraulic cylinder; 2. Slider seat; 3. Connecting rod; 4. Snap-fit ​​mechanism; 5. Positioning hole; 6. Piston rod; 7. Bolt; 8. Fixing mechanism; 9. Slot; 10. Snap-fit ​​block; 11. Connecting column; 12. Connecting ring; 13. Pin; 14. Mounting hole; 15. Guide block; 16. Guide groove; 17. Limiting protrusion; 18. Groove; 19. Limiting groove; 20. Limiting block; 21. Rubber ring. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses an anti-loosening connection structure for a hydraulic cylinder connecting rod.

[0032] Reference Figure 1 An anti-loosening connection structure for a hydraulic cylinder connecting rod includes a hydraulic cylinder. In this embodiment, the hydraulic cylinder 1 is a hydraulic cylinder 1. A slider seat 2 is provided at one end of the hydraulic cylinder 1, and a piston rod 6 is provided in the inner cavity of the hydraulic cylinder 1. Hydraulic oil pushes the piston rod 6 to move, thereby driving the movement of the mold slider seat 2, and thus realizing the demolding of the complex structure of the injection mold.

[0033] Reference Figure 1 In order to limit the movement trajectory of the slider seat 2 and reduce the shaking and deviation of the slider seat 2 during the movement, guide grooves 16 are provided on both sides of the slider seat 2. Guide blocks 15 are slidably connected in the guide grooves 16. The cooperation between the guide grooves 16 and the guide blocks 15 can enhance the stability of the slider seat 2 during sliding.

[0034] Reference Figure 2A connecting rod 3 is provided between the slider seat 2 and the oil cylinder 1. In order to achieve a firm connection between the connecting rod 3 and the slider seat 2, a snap-fit ​​mechanism 4 is provided at the end of the connecting rod 3 near the slider seat 2. The snap-fit ​​mechanism 4 includes a snap-fit ​​groove 9, a snap-fit ​​block 10, and a connecting post 11. The snap-fit ​​groove 9 is opened at the end of the slider seat 2 near the connecting rod 3. The snap-fit ​​block 10 is circular and is integrally formed at the end of the connecting rod 3 away from the oil cylinder 1. The connecting post 11 is integrally formed between the snap-fit ​​block 10 and the connecting rod 3. A limiting groove 19 is opened on the side of the connecting rod 3 near the slider seat 2. In this embodiment, there are two limiting grooves 19. A limiting block 20 is snapped and fixed outside the limiting groove 19. The limiting block 20 plays a limiting role for the connecting rod 3. The end of the limiting block 20 away from the oil cylinder 1 is fixed on the slider seat 2 to ensure the stability of the connecting rod 3 and the slider seat 2 during the sliding process.

[0035] Reference Figure 2 A bolt 7 is fixed to one end of the piston rod 6 near the connecting rod 3. In this embodiment, the bolt 7 is a headless bolt 7. A positioning hole 5 is provided at one end of the connecting rod 3 near the cylinder 1. The bolt 7 is installed in the positioning hole 5 to fix the cylinder 1 and the connecting rod 3.

[0036] Reference Figure 1 and Figure 3 Because the piston rod 6 reciprocates, causing the connecting rod 3 to rotate, the connecting rod 3 may become loose or detached from the cylinder 1, resulting in abnormal movement. Therefore, a fixing mechanism 8 is provided between the piston rod 6 and the connecting rod 3. The fixing mechanism 8 includes a connecting ring 12 and a pin 13. The connecting ring 12 is coaxially fixed to the outside of the piston rod 6. In this embodiment, a rubber ring 21 is provided at the end of the connecting ring 12 near the connecting rod 3 to ensure the stability of the connection. The pin 13 is fixed to the connecting ring 12. The end of the pin 13 away from the connecting ring 12 is conical, which makes it easier to insert into the mounting hole 14. During insertion, the taper can achieve self-locking, and the conical pin can withstand large axial and radial loads. It achieves axial position stability through elastic deformation, which can effectively resist vibration and impact.

[0037] Reference Figure 2 and Figure 3 In order to enhance the connection strength between the connecting ring 12 and the connecting rod 3, a limiting protrusion 17 is provided at one end of the connecting ring 12 near the connecting rod 3, and a groove 18 is provided on the end wall of the connecting rod 3. The limiting protrusion 17 and the groove 18 are engaged and fixed. In order to improve the connection strength, both the limiting protrusion 17 and the groove 18 are inclined, which increases the contact area and achieves a stable connection.

[0038] The implementation principle of the anti-loosening connection structure of the hydraulic cylinder connecting rod in this application embodiment is as follows: the hydraulic cylinder 1 and the connecting rod 3 are fixedly connected by installing bolts 7 in the positioning hole 5, and the connecting rod 3 is prevented from rotating by fixing two pins 13 in the mounting hole 14. At the same time, the reliability of the connection is further enhanced by fixing the limiting protrusion 17 in the groove 18, so that when the piston rod 6 slides in the inner cavity of the hydraulic cylinder 1, the slider seat 2 is driven to slide synchronously.

[0039] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A loosening-preventing connecting structure of a connecting rod of a cylinder, comprising a cylinder (1), one end of the cylinder (1) is provided with a slider seat (2), a connecting rod (3) is arranged between the slider seat (2) and the cylinder (1), characterized in that: The connecting rod (3) is provided with a clamping mechanism (4) near one end of the slider block (2), the connecting rod (3) is provided with a positioning hole (5) near one end of the oil cylinder (1), the oil cylinder (1) is provided with a piston rod (6) in the inner cavity, the piston rod (6) is provided with a bolt (7) near one end of the connecting rod (3), the bolt (7) is installed in the positioning hole (5), and the piston rod (6) and the connecting rod (3) are further provided with a fixing mechanism (8).

2. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 1, characterized in that: The clamping mechanism (4) comprises a clamping groove (9) formed in the slider block (2) near one end of the connecting rod (3), a clamping block (10) arranged in the clamping groove (9), and a connecting column (11) fixed to the clamping block (10) near one end of the oil cylinder (1), wherein the connecting column (11) is integrally formed on the connecting rod (3).

3. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 1, characterized in that: The fixing mechanism (8) comprises a connecting ring (12) coaxially sleeved outside the piston rod (6), a plurality of pins (13) fixed to the connecting ring (12), and an installation hole (14) formed in one end of the connecting rod (3) near the connecting ring (12), wherein the pins (13) are fixed in the installation hole (14).

4. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 2, characterized in that: Both sides of the slider block (2) are fixed with guide blocks (15), and both sides of the slider block (2) are provided with guide grooves (16), wherein the guide grooves (16) are in sliding connection with the guide blocks (15).

5. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 3, characterized in that: The connecting ring (12) is provided with a limiting protrusion (17) near one end of the connecting rod (3), the end wall of the connecting rod (3) is provided with a limiting groove (18) for clamping and fixing the limiting protrusion (17), and the limiting protrusion (17) and the limiting groove (18) are both arranged in an inclined manner.

6. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 1, characterized in that: The connecting rod (3) is provided with a plurality of limiting grooves (19) near one side of the slider block (2), the limiting grooves (19) are provided with limiting blocks (20) outside, and the limiting blocks (20) are fixed to the slider block (2) away from the oil cylinder (1).

7. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 3, characterized in that: The end of the pin (13) away from the connecting ring (12) is conical.

8. The anti-loosening connection structure of a connecting rod of an oil cylinder according to claim 3, characterized in that: The connecting ring (12) is provided with a rubber ring (21) near one end of the connecting rod (3). The connecting ring (12) is provided with a rubber ring (21) near one end of the connecting rod (3).

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