CN220331816U - Manual hydraulic clamping mechanism - Google Patents

Abstract

The utility model discloses a manual hydraulic clamping mechanism, which comprises a clamping mechanism, wherein the clamping mechanism comprises a fixed seat and a collet chuck sleeved in the fixed seat, one end of the collet chuck contacts with the fixed seat through a conical surface, a plurality of grooves are formed in the conical surface of the collet chuck to form a reset part, the other end of the collet chuck is fixed on a shaft core, the shaft core is positioned in a cavity formed by a rear cover, a cylinder tube and the fixed seat, an elastic element is arranged between the rear cover and the shaft core, a first oil filling hole is formed in the fixed seat, and the first oil filling hole is used for filling oil through an oil tube to push the shaft core to move; the manual pressure regulating mechanism comprises a nut seat arranged on the oil circuit board, an adjusting rod is arranged in the nut seat in a penetrating mode, one end of the adjusting rod is connected with a knob, the other end of the adjusting rod extends into a pipe hole of the oil circuit board, the pipe hole of the oil circuit board is connected with an oil pipe, and the oil circuit board is connected with an oil storage cylinder through a one-way valve. The device can clamp the rod piece only by adjusting the knob at the oil circuit board, and the oil circuit board occupies small space when being installed outside the machine.

Description

Manual hydraulic clamping mechanism

Technical Field

The utility model relates to the technical field of improved design of clamps, in particular to a manual hydraulic clamping mechanism.

Background

The fixture is a device for fixing a machining object in a correct position in a machine manufacturing process to receive construction or detection, and is also called a fixture (qi haj ǜ). The fixture is generally composed of a positioning element (determining the correct position of the workpiece in the fixture), a clamping device, a tool setting guide element (determining the relative position of the tool and the workpiece or guiding the tool direction), an indexing device (enabling the workpiece to finish the machining of a plurality of stations in one installation, including a rotary indexing device and a linear movement indexing device), a connecting element, a fixture body (fixture base) and the like.

In the prior art, the patent with the publication number of CN219055293U discloses a hydraulic clamping and extending device for an extrusion blow molding hollow machine, which is characterized by comprising a mounting seat, a cylinder body, a mold locking piston, an elastic collet chuck, a piston cylinder, a clamping piston and an end cover; the mounting seat is arranged at one end of the cylinder body, the piston cylinder is arranged on the inner side of the cylinder body in a sliding mode and extends to the other end of the cylinder body, a first oil inlet cavity is formed between the mounting seat and the cylinder body, the mold locking piston is arranged in the first oil inlet cavity in a sliding mode, the end part of the mold locking piston abuts against one end of the piston cylinder, the elastic collet is arranged on the inner side of the piston cylinder, one end of the elastic collet abuts against the mounting seat, the end cover is arranged at the other end of the piston cylinder, a second oil inlet cavity is formed between the end cover and the other end of the elastic collet, and the clamping piston is arranged in the second oil inlet cavity in a sliding mode. The clamping and releasing of the die locking guide posts are realized by extruding or separating the elastic clamping cylinder through the hydraulic driving piston cylinder, and the hydraulic driving piston cylinder outputs force and stroke, so that the die locking stroke is shortened, the die locking time is saved, and the production efficiency is improved.

According to the technical scheme, the elastic clamping cylinder is extruded or kept away from the hydraulic driving piston cylinder, clamping friction force between the elastic clamping cylinder and the mold locking guide column is used for tightly holding and releasing the mold locking guide column, and the hydraulic driving piston cylinder is used for outputting force and travel, so that the mold locking travel is shortened, the mold locking time is saved, the production efficiency is improved, and the mold locking device is suitable for production of large-scale blow molding products. However, for some application occasions, the space is limited because of the problem, for example, the space is very small after the injection molding machine installs the mold, the mold is difficult to clamp by using a connecting mode such as a threaded buckle, the ejector pin in the mold and other objects needing to be clamped are often inoperable, and the installation and use requirements are difficult to achieve.

In order to solve one of the problems, the application provides a manual hydraulic clamping mechanism.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a manual hydraulic clamping mechanism which can clamp a rod piece only by adjusting a knob at an oil circuit board, and the oil circuit board of the whole device is small in occupied space and low in installation difficulty because the oil circuit board of the whole device is installed outside a machine table by adjusting oil pressure to push the shaft core of the clamping mechanism to move and indirectly drive an elastic telescopic collet chuck to clamp the rod piece.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a manual hydraulic clamping mechanism is used for cladding type clamping of a rod piece and comprises a clamping mechanism, wherein the clamping mechanism comprises a fixed seat and a collet chuck sleeved in the fixed seat, one end of the collet chuck is contacted with the fixed seat through a conical surface, a plurality of grooves are formed in the conical surface of the collet chuck to form a reset part, the plurality of grooves formed in the reset part enable the reset part to have the function of elastic expansion, namely, the collet chuck can clamp the clad rod piece when being pressed when approaching to the fixed seat, otherwise, the collet chuck can be restored to the original state when being separated from contact with the fixed seat, at the moment, the collet chuck loosens the rod piece, the other end of the collet chuck is fixed on a shaft core, the two ends are mutually locked to form a whole, the shaft core is positioned in a cavity formed by a rear cover, a cylinder tube and the fixed seat, an elastic element is arranged between the rear cover and the shaft core and is used for elastically propping against the end part of the shaft core, a first oil injection hole is formed in the fixed seat, the first oil injection hole is formed by oil injection pushing the shaft core to move, the cavity formed by the rear cover, the cylinder tube and the fixed seat is equivalent to the cylinder body of an oil cylinder, the shaft core can be pushed to move when the shaft core is pressed by the fixed seat, and the fixed seat is driven to move when the shaft core is pushed to the fixed seat, or is far away from the collet chuck, when the clamp is contacted with the fixed seat, and the clamp is pressed in the position, and the end part is pressed by the front part, and the end part, which is tightly pressed by the cylinder sleeve seat;

manual pressure regulating mechanism, manual pressure regulating mechanism including installing the nut seat on the oilway board, run through in the nut seat and be equipped with the regulation pole, the one end of regulation pole is connected the knob, the other end of regulation pole stretches into in the tube hole of oilway board, can compress the oilway and form pressure, the tube hole of oilway board is connected oil pipe, the oilway board passes through the check valve and connects the oil storage section of thick bamboo, regulation pole and nut seat are equivalent to screw rod mechanism, turn into the rotary motion of knob to the tube hole rectilinear motion of oilway board, apply effort and produce the oil pressure in the oilway board, provide fixture's oiling pressure, and then realize fixture's clamping action.

Further, the collet as described above has a hollow structure, one end of the collet has a conical shape and is formed with a plurality of grooves, and the other end of the collet has a cylindrical shape.

Further, the groove body is designed to be penetrated and divides the collet into a plurality of broken sheets, and the reset part of the collet is designed to have enough reset space and rebound force.

Further, the collet and the mandrel as described above are threaded and connected by threads, respectively.

Further, as described above, the two ends of the cylinder tube are respectively connected with the rear cover and the fixing seat, the rear cover, the cylinder tube and the fixing seat form an open cavity, which is equivalent to the design of the cylinder body of the oil cylinder, one end of the shaft core is movably clamped in the open cavity, the other end of the shaft core extends outwards along the open cavity, the structure of the shaft core is equivalent to the piston rod and the piston positioned at the end part of the piston rod, and the piston pushes the piston rod to move along with the piston rod.

Further, the shaft core is a stepped cylinder, and an annular cavity communicated with the first oil injection hole is reserved between the shaft core and the fixed seat and corresponds to a cylinder body oil injection space of the oil cylinder.

Further, the elastic element is a butterfly spring, and a plurality of sealing rings are arranged between the shaft core and the fixed group.

Further, the pipe holes of the oil circuit board are connected with oil pipes through pressure gauges and used for observing oil pressure values during working.

Furthermore, the oil circuit board is also provided with a hydraulic control one-way valve and a motor reversing valve which are used for assisting oil return of the oil circuit.

Furthermore, a second oil filling hole is further formed in the rear cover, and a cavity formed by the rear cover, the cylinder tube and the fixing seat is communicated with the second oil filling hole.

Compared with the prior art, the utility model has the beneficial effects that: the rod piece can be clamped only by adjusting the knob at the oil circuit board, the oil circuit board occupies small space when being installed outside the machine, and the installation difficulty is reduced. The problem of the space restriction of injection molding machine installation mould back space very little, be difficult to use connection mode centre gripping such as screw thread buckle is solved.

Drawings

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a perspective view of the present utility model;

FIG. 3 is a top view of the present utility model;

fig. 4 is a sectional view taken along the direction A-A in fig. 3.

In the figure: 1. a rear cover; 2. a butterfly spring; 3. a cylinder tube; 4. a shaft core; 5. a fixing seat; 6. an oil pipe; 7. a collet; 8. an ejector pin; 9. a motorized reversing valve; 10. a hydraulically controlled one-way valve; 11. a knob; 12. a nut seat; 13. an adjusting rod; 14. an oil path plate; 15. a one-way valve; 16. a pressure gauge; 17. an oil storage cylinder.

Detailed Description

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "fixed," "mounted," "connected," "disposed," and the like are to be construed broadly, e.g., when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-4, a manual hydraulic clamping mechanism of the utility model is characterized in that a clamping rod is covered in an opening cavity of a fixed seat 5 through a changeable reset collet chuck 7, and concretely comprises a clamping mechanism and a manual pressure regulating mechanism for driving the clamping mechanism to work, wherein the clamping mechanism comprises the fixed seat 5 and the collet chuck 7 sleeved in the fixed seat 5, one end of the collet chuck 7 contacts with the fixed seat 5 through a conical surface, a plurality of groove body forming reset parts are machined on the conical surface of the collet chuck 7, the reset parts of the collet chuck 7 shrink inwards to clamp the rod, otherwise rebound and reset, the rod is separated from the collet chuck 7, the other end of the collet chuck 7 is fixed on a shaft core 4, the shaft core 4 is arranged in a cavity formed by a rear cover 1, a cylinder tube 3 and the fixed seat 5, an elastic element is arranged between the rear cover 1 and the shaft core 4, a first oil injection hole is machined on the fixed seat 5, and the first oil injection hole is pushed by an oil pipe 6 to move the oil injection core 4; for the manual pressure regulating mechanism, the manual pressure regulating mechanism comprises a nut seat 12 arranged on an oil circuit board 14, one end of a regulating rod 13, which is arranged in the nut seat 12 in a penetrating way, is connected with a knob 11, the other end of the regulating rod 13 extends into a pipe hole of the oil circuit board 14, external threads are arranged on the regulating rod 13, internal threads are processed on the pipe holes of the nut seat 12 and the oil circuit board 14, the regulating rod 13 is converted into linear motion to apply acting force to an oil circuit in the oil circuit board 14 under the rotation of the knob 11, the pipe hole of the oil circuit board 14 is connected with an oil pipe 6, the oil circuit board 14 is connected with an oil storage cylinder 17 through a one-way valve 15, the manual regulating knob 11 compresses an oil circuit to form pressure, and a gap between an axle core 4 and a fixed seat 5 is filled with oil by injecting the oil pipe 6 into the first oil injection hole, so that the axle core 4 is pushed to move.

Example two

Referring to fig. 1-4, in the first embodiment, a manual hydraulic clamping mechanism is provided, for a specific structure of the clamping mechanism, specifically, the collet 7 is of a hollow structure, one end of the collet 7 is of a cone shape and is provided with a plurality of grooves, the other end of the collet 7 is of a cylinder shape, and correspondingly, the shape of an end opening of the fixing seat 5 is a combination of a cylinder and a cone, so that the collet 7 can be inserted into the end opening of the fixing seat 5. Furthermore, the groove body is designed to be penetrating and divides the collet 7 into a plurality of broken sheets, and as can be seen from fig. 1 and 4, the restoring portion of the collet 7 needs to maintain elasticity and have the ability of restoring deformation, so that the hole in front of the collet 7 can be contracted after the inclined surface junction where the restoring portion contacts with the fixing seat 5 is pressed in the sectional view of fig. 4, thereby clamping the rod. In general, the slotted support of the resetting portion of the collet 7 is equally divided into three or four slots along the axial direction, and other modes, such as intermittent staggered slots, can also have elastic avoidance function, and can have deformation resetting capability.

Further, threads are respectively machined on the collet 7 and the shaft core 4 and are connected through the threads. The two ends of the cylinder barrel are respectively connected with the rear cover 1 and the fixed seat 5, the rear cover 1, the cylinder pipe 3 and the fixed seat 5 form an open cavity, one end of the shaft core 4 is movably clamped in the open cavity, namely, the shaft core 4 can be pushed by oil pressure in the open cavity or driven to move by the elastic action of the elastic element, and the other end of the shaft core 4 extends outwards along the open cavity and is in threaded connection with the collet chuck 7 to be fixed into a whole. Further, the shaft core 4 is a stepped cylinder, which is equivalent to a combination of a piston and a piston rod in the oil cylinder, and an annular cavity communicated with the first oil filling hole is reserved between the shaft core 4 and the fixed seat 5, which is equivalent to an oil filling space in the oil cylinder. The elastic element is a butterfly-shaped spring 2, and a plurality of sealing rings are arranged between the shaft core 4 and the fixed group to play a role in sealing.

Example III

Referring to fig. 1 to 4, on the basis of the technical solution of the second embodiment, in a manual hydraulic clamping mechanism, specifically for a specific structure of the manual pressure adjusting mechanism, the pipe hole of the oil circuit board 14 is connected with the oil pipe 6 through the pressure gauge 16, so that the oil pressure value can be observed. Furthermore, the oil circuit board 14 is also provided with a hydraulic control one-way valve 10 and a motor-driven reversing valve 9 for connecting other oil pipes 6. Furthermore, a second oil filling hole is further processed on the rear cover 1, and a cavity formed by the rear cover 1, the cylinder tube 3 and the fixing seat 5 is communicated with the second oil filling hole. In order to ensure the accuracy of the reciprocating motion of the shaft core 4, namely, the elastic element is used as an auxiliary reset component, the second oil filling hole is processed at the rear cover 1 to fill oil, so that the reset action of the shaft core 4 can be pushed, and at the moment, the second oil filling hole and the first oil filling hole have completely opposite actions, so that the second oil filling hole can be connected with other interfaces on the oil circuit board 14 through the oil pipe 6 and is connected with the oil storage cylinder 17 through pipelines under the action of the hydraulic control one-way valve 10 and the motor directional valve 9, and the specific oil circuit board 14 can be selected and purchased on the market according to the requirements, and the related oil pressure product technology is mature and is not repeated here.

Working principle: the device provides horizontal movement power for the shaft core 4 through the oil cylinder and the corresponding oil way control component, and combines the design of the split type resetting part of the collet chuck 7, so that the collet chuck 7 sleeved on the fixed seat 5 has the capability of clamping and loosening a rod piece. The device can be used for clamping the ejector pin in the die of the injection molding machine and other occasions needing to clamp objects. As can be seen from fig. 4, when the rod is required to be clamped, the rod is inserted into the collet 7, the manual adjustment knob 11 is used to compress the oil path to form pressure, the pressure is injected into the first oil injection hole on the fixed seat 5, the pressure pushes the shaft core 4 to move to the left, the collet 7 is also moved to the left because the collet 7 and the shaft core 4 are locked together, and after the junction of the reset portion of the collet 7 and the inclined surface contacted with the fixed seat 5 is pressed, the reset portion in front of the collet 7 is contracted towards the hole, thereby clamping the rod, and then driving the rod to move to the left; on the contrary, when the rod piece needs to be loosened, the knob 11 is manually adjusted to release the pressure of the oil way, at the moment, the butterfly spring 2 resets and pushes the pushing shaft core 4 to move to the right, so that the oil in the fixed seat 5 flows into the oil storage cylinder 17 through the first oil filling hole to the oil way plate 14, because the auxiliary design of the second oil filling hole at the rear cover 1 is also involved, the oil in the oil storage cylinder 17 can be injected into the rear cover 1 to push the shaft core 4 to move backwards, the collet chuck 7 moves to the right along with the oil filling hole, and the reset part of the collet chuck 7 is separated from the fixed seat 5 and then is opened and reset outwards, so that the rod piece can be loosened.

In the device of the present utility model, the assembly and mating relationship of the components involved, the oil circuit board 14 and the various valve components associated therewith, etc. are of prior art or materials, and those skilled in the art can directly purchase or order from the market depending on the desired product model and specification.

The electrical components are all electrically connected with an external main controller and 220V commercial power or industrial power, and the main controller can be conventional known equipment with a control function of a computer and the like.

In the foregoing description, only the preferred embodiment of the present utility model is described, but the common general knowledge of the specific structure and characteristics of the present utility model is not described in any detail. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the present embodiments are to be considered in all respects as illustrative and not restrictive, and any equivalents and modifications thereof according to the technical scheme and the inventive concept thereof, which are within the scope of the present disclosure, are intended to be included in the scope of the present disclosure.

Claims (10)

1. The manual hydraulic clamping mechanism is used for cladding type clamping of a rod piece and is characterized by comprising a clamping mechanism, wherein the clamping mechanism comprises a fixed seat (5) and a collet (7) sleeved in the fixed seat (5), one end of the collet (7) is contacted with the fixed seat (5) through a conical surface, a plurality of groove bodies are formed in the conical surface of the collet (7) to form a reset part, the other end of the collet (7) is fixed on a shaft core (4), the shaft core (4) is positioned in a cavity formed by a rear cover (1), a cylinder tube (3) and the fixed seat (5), an elastic element is arranged between the rear cover (1) and the shaft core (4), a first oil injection hole is formed in the fixed seat (5), and the first oil injection hole is used for injecting oil and pushing the shaft core (4) to move through an oil pipe (6);

the manual pressure regulating mechanism comprises a nut seat (12) arranged on an oil circuit board (14), an adjusting rod (13) is arranged in the nut seat (12) in a penetrating mode, one end of the adjusting rod (13) is connected with a knob (11), the other end of the adjusting rod (13) extends into a pipe hole of the oil circuit board (14), the pipe hole of the oil circuit board (14) is connected with an oil pipe (6), and the oil circuit board (14) is connected with an oil storage cylinder (17) through a one-way valve (15).

2. The manual hydraulic clamping mechanism according to claim 1, wherein the collet (7) is of a hollow structure, one end of the collet (7) is of a conical cylinder shape and is provided with a plurality of grooves, and the other end of the collet (7) is of a cylindrical shape.

3. A manual hydraulic gripping mechanism according to claim 2, characterised in that the slot is of through-going design and divides the collet (7) into a plurality of broken sheets.

4. A manual hydraulic clamping mechanism according to claim 3, characterized in that the collet (7) and the shaft core (4) are respectively threaded and connected by means of threads.

5. The manual hydraulic clamping mechanism according to claim 1, wherein two ends of the cylinder tube are respectively connected with the rear cover (1) and the fixing base (5), the rear cover (1), the cylinder tube (3) and the fixing base (5) form an open cavity, one end of the shaft core (4) is movably clamped in the open cavity, and the other end of the shaft core (4) extends outwards along the open cavity.

6. The manual hydraulic clamping mechanism according to claim 5, wherein the shaft core (4) is a stepped cylinder, and an annular cavity communicated with the first oil filling hole is reserved between the shaft core (4) and the fixed seat (5).

7. The manual hydraulic clamping mechanism according to claim 6, wherein the elastic element is a butterfly spring (2), and a plurality of sealing rings are further arranged between the shaft core (4) and the fixed group.

8. The manual hydraulic clamping mechanism according to claim 1, wherein the pipe holes of the oil circuit board (14) are connected with the oil pipe (6) through the pressure gauge (16).

9. The manual hydraulic clamping mechanism according to claim 8, wherein the oil circuit board (14) is further provided with a hydraulic control one-way valve (10) and a motor directional valve (9).

10. The manual hydraulic clamping mechanism according to claim 9, wherein the rear cover (1) is further provided with a second oil filling hole, and a cavity formed by the rear cover (1), the cylinder tube (3) and the fixing seat (5) is communicated with the second oil filling hole.