Short-stroke hydraulic cylinder for a mold

Abstract

The utility model relates to hydraulic cylinder technical field discloses short and thick formula hydraulic cylinder for mould, include: hydraulic cylinder body, be equipped with piston rod on the hydraulic cylinder body, the piston rod on the hydraulic cylinder body extends along the axial direction, U shape wrapping block, the U shape wrapping block fixed connection in the cylinder barrel outer wall of hydraulic cylinder body, two travel switches, two travel switches interval installation in the top of U shape wrapping block, be equipped with gyro wheel on two travel switches, the axis of gyro wheel and the axis of piston rod are perpendicular. The beneficial effect of the above technical scheme is: through the piston rod of hydraulic cylinder body directly drive mould insert, cooperate two travel switches on U shape wrapping block, utilize the contact trigger of radial boss and gyro wheel, can accurate control the forward stretch, the retraction limit position of piston rod, the chamfer of radial boss upper part can reduce the impact when its gyro wheel contact, promote the stability of travel control.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a short and thick hydraulic cylinder for molds. Background Technology

[0002] When conventional hydraulic cylinders drive mold inserts, they lack precise stroke limiting structures, making it difficult to stably control the extreme positions of the inserts' forward extension and retraction. This can easily lead to damage to the mold inserts or the hydraulic cylinder body due to excessive stroke. Some hydraulic cylinders with stroke control use external sensors, and the assembly structure between the sensor and the hydraulic cylinder is loose. Under the vibration environment of high-frequency mold operation, the sensor is prone to displacement, resulting in large stroke signal triggering errors. Utility Model Content

[0003] The purpose of this invention is to provide a short and thick hydraulic cylinder for molds to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a short and thick hydraulic cylinder for molds, comprising: A hydraulic cylinder body, wherein a piston rod is provided on the hydraulic cylinder body, and the piston rod on the hydraulic cylinder body extends axially. U-shaped wrapping block, the U-shaped wrapping block is fixedly connected to the outer wall of the cylinder barrel of the hydraulic cylinder body; Two limit switches are installed at intervals on the top of the U-shaped wrapping block, and each limit switch is equipped with a roller, the axis of which is perpendicular to the axis of the piston rod. A radial protrusion is fitted and fixed to the piston rod body. Both ends of the upper axial part of the radial protrusion are chamfered. The top of the radial protrusion is configured to contact the roller when the piston rod moves to its limit position.

[0005] The beneficial effects of adopting the above technical solution are as follows: the piston rod of the hydraulic cylinder body directly drives the mold insert, and with the help of two limit switches on the U-shaped wrapping block, the contact trigger between the radial protrusion and the roller can accurately control the forward extension and backward retraction limit positions of the piston rod; the chamfer on the upper part of the radial protrusion can reduce the impact when it contacts the roller, and improve the stability of the stroke control.

[0006] As a further improvement of this utility model, the side wall of the U-shaped wrapping block is provided with a plurality of mounting holes, which are used to fix the U-shaped wrapping block to an external device.

[0007] The beneficial effects of adopting the above technical solution are: the mounting holes on the side wall of the U-shaped wrapping block can realize the quick fixation of the device to external equipment, improving the installation adaptability and assembly efficiency of the device.

[0008] As a further improvement of this utility model, the bottom of the cylinder body of the hydraulic cylinder is connected to two pipe joints, which are used to connect to the hydraulic pipeline.

[0009] The beneficial effects of adopting the above technical solution are: the two pipe joints at the bottom of the cylinder body provide a standardized interface for the connection of hydraulic pipelines, which facilitates the rapid connection and maintenance of the hydraulic system.

[0010] As a further improvement of this utility model, the radial protrusion is interference-fitted with the piston rod body, and the end of the piston rod is connected to a limiting cylinder and two concave-convex splicing segments respectively. The radial protrusion is disposed between the limiting cylinder and the two concave-convex splicing segments, and the two concave-convex splicing segments are fixedly connected by fasteners.

[0011] The beneficial effects of adopting the above technical solution are: the interference fit between the radial protrusion and the piston rod, combined with the axial positioning of the limiting cylinder and the splicing and fixing of the concave and convex splicing petals, can ensure the firmness of the connection between the radial protrusion and the piston rod, and prevent it from loosening or shifting during the movement. At the same time, it facilitates the disassembly and connection between the radial protrusion and the piston rod.

[0012] As a further improvement of this utility model, the inner wall of the U-shaped wrapping block is fitted with the outer wall of the cylinder barrel of the hydraulic cylinder body, and the U-shaped wrapping block is fixedly connected to the hydraulic cylinder body by bolts.

[0013] The beneficial effects of adopting the above technical solution are: the fit design between the inner wall of the U-shaped wrapping block and the outer wall of the hydraulic cylinder body, combined with bolt fixing, can improve the connection stability between the U-shaped wrapping block and the hydraulic cylinder body, and avoid control errors caused by loose mounting base of the limit switch.

[0014] As a further improvement of this utility model, the limit switch is fixed to the top of the U-shaped wrapping block by a threaded connection, and the roller of the limit switch can rotate around its own axis.

[0015] The beneficial effects of adopting the above technical solution are: the threaded connection between the limit switch and the U-shaped wrapping block facilitates the position adjustment of the limit switch, while the rotatable design of the roller can reduce the frictional loss when it contacts the radial protrusion, thus extending the service life of the limit switch.

[0016] As a further improvement of this utility model, the free end of the piston rod is used to connect to the mold insert, and the moving direction of the piston rod is consistent with the moving direction of the mold insert.

[0017] The beneficial effects of adopting the above technical solution are: the direct connection between the free end of the piston rod and the mold insert, and the fact that the two move in the same direction, can ensure the driving accuracy of the hydraulic cylinder body on the mold insert and improve the synchronization of the mold insert's movements.

[0018] As a further improvement of this utility model, the distance between the two limit switches is adapted to the stroke of the piston rod, and the installation height of the two limit switches is adapted to the radial height of the radial protrusion.

[0019] The beneficial effects of adopting the above technical solution are: the spacing between the two limit switches is adapted to the piston rod stroke, and the installation height corresponds to the radial protrusion size, which can accurately match the limit movement position of the piston rod and ensure the accuracy of stroke control. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of the short and thick hydraulic cylinder for molds according to this utility model; Figure 2 This utility model relates to a short and thick hydraulic cylinder for mold making. Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a bottom view of the short and thick hydraulic cylinder for molds according to this utility model. Figure 4 This is a schematic diagram of the limiting cylinder structure of the short and thick hydraulic cylinder for molds of this utility model.

[0022] In the diagram: 1. Hydraulic cylinder body; 2. Piston rod; 3. U-shaped wrapping block; 4. Limit switch; 5. Roller; 6. Radial protrusion; 7. Chamfer; 8. Concave-convex splicing segment; 9. Mounting hole; 10. Pipe connector; 11. Limiting cylinder. 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 protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a short and thick hydraulic cylinder for molds, comprising: Hydraulic cylinder body 1, with piston rod 2 provided on hydraulic cylinder body 1, the piston rod 2 on hydraulic cylinder body 1 extending axially; U-shaped wrapping block 3, U-shaped wrapping block 3 is fixedly connected to the outer wall of the cylinder barrel of the hydraulic cylinder body 1; Two limit switches 4 are installed at intervals on the top of the U-shaped wrapping block 3. Each limit switch 4 is equipped with a roller 5, which faces the radial direction of the piston rod 2. Radial protrusion 6 is fitted and fixed on the rod body of piston rod 2. Both ends of the upper axial part of radial protrusion 6 are provided with chamfers 7. The top of radial protrusion 6 can contact roller 5 at the extreme position.

[0025] The beneficial effects of adopting the above technical solution are as follows: the piston rod 2 of the hydraulic cylinder body 1 directly drives the mold insert, and with the help of the two limit switches 4 on the U-shaped wrapping block 3, the contact triggering of the radial protrusion 6 and the roller 5 can accurately control the forward extension and backward retraction limit positions of the piston rod 2; the chamfer 7 on the upper part of the radial protrusion 6 can reduce the impact when it contacts the roller 5 and improve the stability of the stroke control.

[0026] In one embodiment of this utility model, the side wall of the U-shaped wrapping block 3 is provided with a plurality of mounting holes 9, which are used to fix the U-shaped wrapping block 3 to an external device.

[0027] The beneficial effects of adopting the above technical solution are: the mounting holes 9 on the side wall of the U-shaped wrapping block 3 can realize the quick fixation of the device and external equipment, and improve the installation adaptability and assembly efficiency of the device.

[0028] In one embodiment of this utility model, the bottom of the cylinder barrel of the hydraulic cylinder body 1 is connected to two pipe joints 10, which are used to connect to the hydraulic pipeline.

[0029] The beneficial effects of adopting the above technical solution are: the two pipe joints 10 at the bottom of the cylinder body 1 provide a standardized interface for the connection of hydraulic pipelines, which facilitates the rapid connection and maintenance of the hydraulic system.

[0030] In one embodiment of this utility model, the radial protrusion 6 is interference-fitted with the piston rod 2. The end of the piston rod 2 is connected to a limiting cylinder 11 and two concave-convex splicing petals 8 respectively. The radial protrusion 6 is disposed between the limiting cylinder 11 and the two concave-convex splicing petals 8. Fasteners are used to fix the two concave-convex splicing petals 8 together.

[0031] The beneficial effects of adopting the above technical solution are: the interference fit between the radial protrusion 6 and the piston rod 2, combined with the axial positioning of the limiting cylinder 11 and the splicing and fixing of the concave and convex splicing petals 8, can ensure the firm connection of the radial protrusion 6 on the piston rod 2, avoid loosening or displacement during the movement, and at the same time facilitate the disassembly and connection between the radial protrusion 6 and the piston rod 2.

[0032] In one embodiment of this utility model, the inner wall of the U-shaped wrapping block 3 is fitted with the outer wall of the cylinder barrel of the hydraulic cylinder body 1, and the U-shaped wrapping block 3 and the hydraulic cylinder body 1 are fixedly connected by bolts.

[0033] The beneficial effects of adopting the above technical solution are: the fit design between the inner wall of the U-shaped wrapping block 3 and the outer wall of the cylinder barrel of the hydraulic cylinder body 1, combined with bolt fixing, can improve the connection stability between the U-shaped wrapping block 3 and the hydraulic cylinder body 1, and avoid the control error of the limit switch 4 due to the loose mounting base.

[0034] In one embodiment of this utility model, the limit switch 4 is fixed to the top of the U-shaped wrapping block 3 by a threaded connection, and the roller 5 of the limit switch 4 can rotate around its own axis.

[0035] The beneficial effects of adopting the above technical solution are: the threaded connection between the limit switch 4 and the U-shaped wrapping block 3 facilitates the position adjustment of the limit switch 4, and the rotatable design of the roller 5 can reduce the frictional loss when it contacts the radial protrusion 6, thus extending the service life of the limit switch 4.

[0036] In one embodiment of this utility model, the free end of the piston rod 2 is used to connect to the mold insert, and the moving direction of the piston rod 2 is consistent with the moving direction of the mold insert.

[0037] The beneficial effects of adopting the above technical solution are: the direct connection between the free end of the piston rod 2 and the mold insert, and the fact that the two move in the same direction, can ensure the driving accuracy of the hydraulic cylinder body 1 on the mold insert and improve the synchronization of the mold insert's movements.

[0038] In one embodiment of this utility model, the distance between the two limit switches 4 is adapted to the stroke of the piston rod 2, and the installation height of the two limit switches 4 is adapted to the radial height of the radial protrusion 6.

[0039] The beneficial effects of adopting the above technical solution are: the spacing between the two limit switches 4 is adapted to the stroke of the piston rod 2, and the installation height corresponds to the size of the radial protrusion 6, which can accurately match the extreme movement position of the piston rod 2 and ensure the accuracy of stroke control.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A short, stubby hydraulic cylinder for molds, characterized in that: include: A hydraulic cylinder body, wherein a piston rod is provided on the hydraulic cylinder body, and the piston rod on the hydraulic cylinder body extends axially. U-shaped wrapping block, the U-shaped wrapping block is fixedly connected to the outer wall of the cylinder barrel of the hydraulic cylinder body; Two limit switches are installed at intervals on the top of the U-shaped wrapping block, and each limit switch is equipped with a roller, the axis of which is perpendicular to the axis of the piston rod. A radial protrusion is fitted and fixed to the piston rod body. Both ends of the upper axial part of the radial protrusion are chamfered. The top of the radial protrusion is configured to contact the roller when the piston rod moves to its limit position.

2. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The sidewall of the U-shaped package block has multiple mounting holes, which are used to fix the U-shaped package block to an external device.

3. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The bottom of the cylinder body of the hydraulic cylinder is connected to two pipe joints, which are used to connect to the hydraulic pipeline.

4. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The radial protrusion is interference-fitted with the piston rod body. The end of the piston rod is connected to a limiting cylinder and two concave-convex joints. The radial protrusion is disposed between the limiting cylinder and the two concave-convex joints. Fasteners are used to fix the two concave-convex joints together.

5. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The inner wall of the U-shaped wrapping block is fitted to the outer wall of the cylinder of the hydraulic cylinder body, and the U-shaped wrapping block is fixedly connected to the hydraulic cylinder body by bolts.

6. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The limit switch is fixed to the top of the U-shaped wrapping block by a threaded connection, and the roller of the limit switch can rotate around its own axis.

7. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The free end of the piston rod is used to connect to the mold insert, and the direction of movement of the piston rod is consistent with the direction of movement of the mold insert.

8. The short, thick hydraulic cylinder for molds according to claim 1, characterized in that, The spacing between the two limit switches is adapted to the stroke of the piston rod, and the mounting height of the two limit switches is adapted to the radial height of the radial protrusion.

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