CN207840710U - A kind of straight line driving mechanism and apply its annular workpieces clamping device - Google Patents

Abstract

The utility model discloses a linear drive mechanism and a ring-shaped workpiece clamping device using the same, which belongs to the technical field of ring-shaped workpiece processing equipment. The horizontal drive force of the prior art directly depends on the power of the drive source, and some occasions require a larger The horizontal driving force can only be selected from a high-power driving source, which leads to an increase in user cost. The horizontal driving force of the moving part of the utility model has no direct relationship with the vertical driving force of the driving source. Since the moving part is equivalent to the lever arm , the driving source can push one end of the moving part to move downward with a small driving force, and at the same time, the end of the moving part connected to the push rod cannot move to the right under the blocking of the push rod, and the moving part can obtain a theoretically infinite lateral direction The driving force drives the moving part to move laterally to the left, thereby realizing the situation of using a low-power driving source to realize a large driving force. The utility model has ingenious conception, compact structure and low manufacturing cost.

Description

A linear drive mechanism and an annular workpiece clamping device using the same

technical field

The utility model relates to a linear drive mechanism and an annular workpiece clamping device using the same, which belongs to the technical field of annular workpiece processing equipment.

Background technique

The existing linear drive mechanism generally achieves linear motion through cylinders or magnetic steel or linear motors or rotary motors with ball screw assemblies. The lateral drive force directly depends on the power of the drive source. Some occasions require a larger For the lateral driving force, only high-power driving sources can be selected, which will increase the cost of use for users, and generally the volume of the driving source is proportional to its power. Using a high-power driving source will result in a larger volume of the device and take up more space.

Further, in order to improve the processing efficiency of the ring-shaped workpiece, it is generally necessary to set up a linear drive mechanism to clamp and unload the ring-shaped workpiece. In order to effectively clamp ring-shaped workpieces, on December 21, 2014, the Chinese invention patent with application number 201410798742.3 discloses a self-centering fixture for ring-shaped workpieces, including a bracket and a motor connected to the bracket screws. The first feed screw threaded through the second coupling and the bracket, the second feed screw parallel to the first feed screw, threaded to the first coupling at the left and right ends of the first feed screw , also includes a first guide plate and a second guide plate; the lower ends of the first guide plate and the second guide plate are respectively welded with two sliding seats, and the two sliding seats are respectively threaded with the first feed screw and the second feed screw, and the first A tapered tubular mandrel and a long rod-shaped positioning post are welded on the guide plate. The mandrel is larger on the left and smaller on the right, and the positioning post is located at the center of the mandrel. Parallel to the first feed screw.

When in use, put the annular workpiece from the end of the positioning column away from the first guide plate into the positioning column, then pass the positioning column through the round hole of the second guide plate, start the motor, and the first feed screw converts the rotational motion generated by the motor For the linear movement of the first guide plate and the second guide plate, the first guide plate and the second guide plate move an equal distance at the same time, and the first guide plate and the second guide plate make a relative linear motion, driving the mandrel and the positioning column on the first guide plate and the second guide plate The guide plate makes relative movement. Until the second guide plate presses the annular workpiece tightly, the inner circle of the annular workpiece is clamped on the mandrel, so that the first guide plate and the second guide plate can no longer continue to make relative linear motion, and the motor is turned off. At this time, the annular workpiece is automatically centered and Clamp.

In this technical solution, in order to ensure that the mandrel can drive the ring-shaped workpiece to move effectively, the outer surface of the mandrel must fit closely with the inner hole of the ring-shaped workpiece, and the frustum-shaped mandrel must have sufficient length to extend into the ring-shaped workpiece, and the motor drives the screw The reciprocating movement of the component, and then driving the mandrel to extend into the inner hole of the annular workpiece, requires the motor to provide a sufficient driving force. The motor has high requirements, and the conventional motor cannot meet the requirements. If the motor is specially customized, it will lead to high manufacturing costs of the fixture.

And although this technical solution can be used for the clamping of annular workpieces, it is only suitable for clamping annular workpieces through the inner hole, and cannot clamp the annular workpieces through the outer ring wall of the annular workpieces, resulting in the The scope of application of the fixture is narrow.

Utility model content

Aiming at the defects of the prior art, the purpose of this utility model is to provide a linear drive mechanism with a compact structure and low manufacturing cost that utilizes a low-power driving source to achieve a large driving force, and further, to provide a low-cost manufacturing that requires a driving source A low, wide-applicable annular workpiece clamping device capable of clamping an annular workpiece through the outer ring wall of the annular workpiece.

In order to achieve the above object, the technical solution of the present utility model is: a linear drive mechanism, including a driving source and a moving part arranged obliquely, the driving source is provided with a vertically reciprocating push rod, and the pushing rod and the moving part rotate Connection, the angle between the two extension lines is greater than or equal to 90 degrees, the vertically moving push rod drives one end of the inclined moving part to move vertically, and the other end of the moving part moves horizontally under the limit of the push rod, and then treats The push piece generates a lateral driving force, and the push rod and the moving piece are arranged in two groups, symmetrically arranged on both sides of the piece to be pushed.

The moving part of the utility model is arranged obliquely, and one end can be in conflict with the to-be-pushed part placed on the horizontal slideway, and the contact point forms a lever fulcrum, and the other end is rotationally connected with the push rod to avoid torque generation, and the joint of the two forms a lever receiving force. Point of force, the entire moving part is a lever moment arm.

The driving source drives the push rod to move downwards, and then the push rod pushes the end of the moving part, that is, the moving end of the lever, to move down. Due to the rotational connection between the two, the moving part only drops in position and height, and no torque is generated. Furthermore, the lateral distance between the piece to be pushed and the push rod gradually becomes shorter, but the length of the moving piece does not change. At the same time, the push rod cannot move laterally in the opposite direction of the piece to be pushed or can only move a small distance, resulting in the other end of the moving piece only It can move to the left, and then push the piece to be pushed to move laterally. The lateral driving force of the moving part is not directly related to the vertical driving force of the driving source. Since the moving part is equivalent to a lever arm, the driving source can push one end of the moving part to move downward with a small driving force, and at the same time the moving part The end connected to the push rod cannot move to the right under the blocking of the push rod. As long as the moving part is strong enough and the connection between the push rod and the driving source is stable enough, the moving part will obtain a theoretically infinite lateral driving force to drive the moving part Move laterally to the left, thereby realizing the situation of using a low-power driving source to realize a large driving force. The utility model has ingenious conception, compact structure and low manufacturing cost. The driving source can be a cylinder or a manual drive. The lever structure formed by the moving parts can greatly save the work of the driving source, and then a large lateral driving force can be obtained through a manual drive or a low-power driving source.

As an optimal technical measure, the end of the moving member away from the push rod is rotatably connected to a pusher that can only move laterally, and the pusher interferes with the piece to be pushed and pushes the piece to be pushed to move. The pusher can be sleeved on the horizontally arranged slide rails or placed on the horizontal slide rails. The moving part is rotationally connected with the pushing part, so as to prevent the moving part from transmitting torque and vertical force to the pushing part, so that the pushing part only obtains the horizontal driving force, avoiding excessive pressure damage to the pushing part, and then the pushing part only transfers the horizontal driving force Pass it to the piece to be pushed, so that the piece to be pushed moves laterally. At the same time, both ends of the moving part are connected by rotation, so that when one end of the moving part moves down, the other end responds quickly and adjusts the direction of the end, thereby generating greater lateral deformation force, which is then transformed into the lateral direction of the pushed part. driving force. The shape of the pushing piece matches the shape of the piece to be pushed, so that the force on the piece to be pushed is uniform, and local force damage to the piece to be pushed is avoided.

As a preferred technical measure, the lower surface of the moving end of the driving source is provided with a concave notch, and the upper end of the push rod is inserted into the notch to connect with the driving source in a one-way swing, so as to increase the freedom of movement of the push rod and make the push rod more flexible. sex.

As a preferred technical measure, the moving part includes a positive moving part for pushing the part to be pushed to one side, and a negative moving part to move to the other side, and the upper ends of the positive moving part and the negative moving part are rotatably connected with the push rod , further, increasing the lateral driving force and lateral movement of the moving part, so that the to-be-pushed part obtains a larger lateral movement.

As an optimal technical measure, a stop is provided adjacent to the negative moving part, and the push rod moves downward to drive the lower end of the negative moving part to move laterally against the stop. Since the stop is close to the negative pushing part, the negative moving part can only move slightly to the right. At this time, the push rod continues to push the left end of the negative moving part to move down, thus causing the left end of the negative moving part to reversely push the push rod to swing in the lateral direction of the positive moving part. Further, the lateral driving force and lateral movement amount of the moving part are increased, so that The workpiece to be pushed gets a larger lateral movement.

An annular workpiece clamping device using a linear drive mechanism, including a fixed seat with a hollow cavity, and an elastic collet for contacting the outer wall of the annular workpiece. The elastic collet is installed in the hollow cavity of the fixed seat, and the elastic The collet is a cavity structure, one end of which is a circular truncated structure, and the linear drive mechanism drives the elastic collet to move in the fixed seat, changing the accommodation radius of the circular truncated structure, and clamping the ring-shaped workpiece.

The ring-shaped workpiece is put into the circular table-shaped structure of the elastic chuck of the utility model, and the driving source drives the push rod to move downward, and the downward movement of the push rod drives the right end of the moving part to move downward, and its left end moves to the left, and then the left end of the moving part Drive the elastic chuck to move to the left. At this time, the elastic chuck will bear the lateral pulling force of the moving part. Under the leverage of the linear drive mechanism, the moving part will generate a large lateral driving force, making the elastic chuck move to the left Move, the frustum-shaped structure enters the hollow cavity of the fixed seat 7, the frustum-shaped structure enters the hollow cavity of the fixed seat, the internal size of the hollow cavity is fixed, so that the end of the frustum-shaped structure of the collet part produces a certain radial deformation, Furthermore, the inner wall surface of the circular truncated structure is in conflict with the outer ring wall surface of the annular workpiece, thereby clamping the annular workpiece, the structure is convenient to manufacture, and the scheme is practical.

As an optimal technical measure, the linear drive mechanism is installed above the collet through a bracket to facilitate the generation of vertical driving force, and the gravity of the push rod can be converted into a part of the vertical driving force. When the included angle is 100°, the position of the moving part is locked, and even if the driving source does not perform work, it can ensure that the elastic collet is clamping the annular workpiece. The moving part and the collet part can be directly connected by rotation or indirectly through other parts, and can also be connected in conflict. The moving part drives the collet part to move into the hollow cavity, and the structure is simple and practical.

As a preferred technical measure, one end of the elastic chuck part away from the annular workpiece is fixedly connected to the fastener, and the fastener protrudes from the elastic chuck part; the moving part includes a positive moving part and a negative moving part, and the positive moving part, The negative moving part rotates and connects a positive pushing part and a negative pushing part respectively. The positive pushing part is adjacent to the fastener, and the negative pushing part is adjacent to the fixed seat. The downward movement of the push rod drives the right end of the positive moving part to move downward, and its left end Move to the left, and then its left end drives the positive pusher against the fastener, driving the fastener and the elastic chuck to move to the left, while the left end of the negative moving part moves downward, and its right end moves to the right, driving the negative pusher to resist On the fixed seat, the left end of the negative moving part reversely pushes the push rod to swing in the lateral direction of the positive moving part, increasing the leftward moving distance of the firmware and the collet.

As a preferred technical measure, it also includes a blanking mechanism for driving the blanking of the circular workpiece. The blanking mechanism includes a blanking rod that passes through the elastic chuck, and a blanking drive source for driving the blanking rod to reciprocate. , when blanking is required, the blanking rod stretches out to push the ring-shaped workpiece to fall to complete the blanking. The structure is simple and practical.

As an optimal technical measure, the driving source of the blanking is a cylinder, one end of the piston rod is connected with the blanking rod, and the other end is provided with an extension rod protruding from the cylinder body, and a positioning seat is provided adjacent to the extension rod, and the positioning seat A positioning column for limiting the moving position of the extension rod is screwed, and the positioning column is provided with a scale, which is convenient for observing the extension distance of the positioning column.

Compared with the prior art, the utility model has the following beneficial effects: the moving part of the utility model is arranged obliquely, one end can be in conflict with the part to be pushed placed on the horizontal slideway, and the contact point forms a lever fulcrum, and the other end is in contact with the push rod Rotate the connection to avoid torque generation, the joint of the two forms a lever force point, and the entire moving part is a lever arm.

The driving source drives the push rod to move downwards, and then the push rod pushes the end of the moving part, that is, the moving end of the lever, to move down. Due to the rotational connection between the two, the moving part only drops in position and height, and no torque is generated. Furthermore, the lateral distance between the piece to be pushed and the push rod gradually becomes shorter, but the length of the moving piece does not change. At the same time, the push rod cannot move laterally in the opposite direction of the piece to be pushed or can only move a small distance, resulting in the other end of the moving piece only It can move to the left, and then push the piece to be pushed to move laterally. The lateral driving force of the moving part is not directly related to the vertical driving force of the driving source. Since the moving part is equivalent to a lever arm, the driving source can push one end of the moving part to move downward with a small driving force, and at the same time the moving part The end connected to the push rod cannot move to the right under the blocking of the push rod. As long as the moving part is strong enough and the connection between the push rod and the driving source is stable enough, the moving part will obtain a theoretically infinite lateral driving force to drive the moving part Move laterally to the left, thereby realizing the situation of using a low-power driving source to realize a large driving force. The utility model has ingenious conception, compact structure and low manufacturing cost.

The ring-shaped workpiece is put into the circular table-shaped structure of the elastic chuck of the utility model, and the driving source drives the push rod to move downward, and the downward movement of the push rod drives the right end of the moving part to move downward, and its left end moves to the left, and then the left end of the moving part Drive the elastic chuck to move to the left. At this time, the elastic chuck will bear the lateral pulling force of the moving part. Under the leverage of the linear drive mechanism, the moving part will generate a large lateral driving force, making the elastic chuck move to the left Move, the frustum-shaped structure enters the hollow cavity of the fixed seat 7, the frustum-shaped structure enters the hollow cavity of the fixed seat, the internal size of the hollow cavity is fixed, so that the end of the frustum-shaped structure of the collet part produces a certain radial deformation, Furthermore, the inner wall surface of the truncated circular structure collides with the outer ring wall surface of the ring-shaped workpiece, thereby clamping the ring-shaped workpiece. The utility model has a wide range of applications, and the structure is easy to manufacture, and the scheme is practical.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view of the utility model.

Fig. 3 is a schematic diagram of the back structure of the utility model.

Fig. 4 is a top view of the utility model.

Fig. 5 is a front view of the utility model.

Explanation of reference signs: 1-drive source, 11-moving end, 12-support, 2-moving part, 21-positive moving part, 22-negative moving part, 3-push rod, 4-pushing part, 41-positive pushing 42-Negative Pusher, 5-Fastener, 51-First Fastener, 52-Second Fastener, 6-Elastic Collet, 61-Tie Rod, 7-Fixer, 8-Blanking Mechanism, 81-feeding driving source, 82-feeding rod, 83-positioning column, 84-positioning seat, 85-piston rod, 9-ring workpiece, A-lever fulcrum, B-lever moving end.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

On the contrary, the utility model covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the utility model defined by the claims. Further, in order to make the public have a better understanding of the utility model, some specific details are described in detail in the detailed description of the utility model below. Those skilled in the art can fully understand the present invention without the description of these detailed parts.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The terms "vertical", "transverse", "upper", "lower", "left", "right" and similar expressions are used herein for the purpose of description only.

The object to be pushed or the annular workpiece of the present utility model is placed on the right side, and the linear drive mechanism is placed on the upper left thereof, so there is a change in the left and right movement of the above scheme. If the piece to be pushed is placed on the left side, the linear drive mechanism is placed on the upper right side of it. The left and right movement changes of the above scheme are opposite. Furthermore, the linear drive mechanism can also be placed under the piece to be pushed, or the piece to be pushed is placed vertically, and the linear drive structure can also be placed horizontally. The working principle is similar to the above-mentioned solution, and will not be repeated here.

As shown in Figure 1-2, a linear drive mechanism includes a drive source 1 and a moving part 2 arranged obliquely. The drive source 1 is provided with a vertically reciprocating push rod 3. Rotate the connection, the angle between the two extension lines is greater than or equal to 90 degrees. The moving part 2 of the utility model is arranged obliquely, one end can be in conflict with the part to be pushed placed on the horizontal slideway, the contact point forms a lever fulcrum A, and the other end is rotationally connected with the push rod 3 to avoid torque generation, and the joint forms a lever At the moving end B, the entire moving part 2 is a lever arm.

The push rod 3 and the moving part 2 are arranged in two groups, symmetrically arranged on both sides of the part to be pushed. The driving source 1 drives the push rod 3 to move downward, and then the push rod 3 pushes the end of the moving part 2, that is, the moving end B of the lever, to move downward. Due to the rotational connection between the two, the position of the moving part 2 is lowered, and there is no torque produce. Furthermore, the lateral distance between the piece to be pushed and the push rod 3 gradually becomes shorter, but the length of the moving piece 2 does not change. At the same time, the push rod 3 cannot move laterally in the opposite direction of the piece to be pushed or can only move a small distance, resulting in the movement of the moving piece 2. The other end of the can only move to the left, and then promote the lateral movement of the piece to be pushed. The lateral driving force of the moving part 2 is not directly related to the vertical driving force of the driving source 1. Since the moving part 2 is equivalent to a lever arm, the driving source 1 can push one end of the moving part 2 downward with a relatively small driving force. At the same time, the end of the moving part 2 connected to the push rod 3 cannot move to the right under the blocking of the push rod 3. As long as the moving part 2 is tough enough and the connection between the push rod 3 and the driving source 1 is stable enough, the moving part 2 is A theoretically infinite lateral driving force is obtained, and the moving part 2 is driven to move laterally to the left, thereby realizing the situation of using a low-power driving source 1 to realize a large driving force. The utility model has ingenious conception, compact structure and low manufacturing cost.

The utility model is provided with an embodiment of a pusher that directly interferes with the piece to be pushed: the end of the moving piece 2 away from the push rod 3 is rotatably connected to a pusher 4 that can only move laterally, and the connection point between the moving piece 2 and the pusher A lever fulcrum A is formed, and the pushing piece 4 resists the piece to be pushed and pushes the piece to be pushed to move. The pusher 4 can be sleeved on or placed on the horizontally arranged slide rails. The moving part 2 is rotationally connected with the pushing part 4, so as to prevent the moving part 2 from transmitting torque and vertical force to the pushing part 4, so that the pushing part 4 can only obtain the horizontal driving force, so as to prevent the pushing part 4 from being damaged by excessive pressure, and then push Part 4 only transmits the transverse driving force to the piece to be pushed, so that the piece to be pushed moves laterally. At the same time, both ends of the moving part 2 are connected by rotation, so that when one end of the moving part 2 moves down, the other end responds quickly and adjusts the direction of the end, thereby generating a greater lateral deformation force, and then converting it into a piece to be pushed horizontal driving force. The shape of the pushing piece 4 matches the shape of the piece to be pushed, so that the force on the piece to be pushed is uniform, and local force damage to the piece to be pushed is avoided.

The embodiment of the utility model that doubles the amount of lateral movement: as shown in Figure 3-5, the lower surface of the moving end 11 of the driving source 1 is provided with a concave notch, and the upper end of the push rod 3 extends into the notch and The driving source 1 is unidirectionally oscillatingly connected. The moving part 2 includes a positive moving part 21 for pushing the piece to be pushed to one side, and a negative moving part 22 moving to the other side. The upper ends of the positive moving part 21 and the negative moving part 22 rotate with the push rod 3 connect. A stopper is provided adjacent to the negative moving part 22, and the downward movement of the push rod 3 drives the lower end of the negative moving part 22 to move laterally against the stopper. Since the stopper is next to the negative pusher, the negative moving part can only move slightly to the right. At this time, the push rod continues to push the left end of the negative moving part to move down, thus causing the left end of the negative moving part 22 to reversely push the push rod 3 to swing in the lateral movement direction of the positive moving part 21, further increasing the lateral driving force and the amount of lateral movement of the moving part 2 , so that the workpiece to be pushed obtains a greater amount of lateral movement.

The circular workpiece clamping device using a linear drive mechanism includes a fixed seat 7 with a hollow cavity, an elastic chuck member 6 for contacting the outer wall of the circular workpiece 9, and a blanking mechanism 8 for driving the circular workpiece 9 to unload. The unloading mechanism 8 includes a unloading rod 82 passing through the elastic chuck member 6 , and a unloading drive source 81 for driving the unloading rod 82 to reciprocate. The linear drive mechanism is erected above the collet 6 through a bracket 12 , the moving part 2 is connected with the collet 6 , and the moving part 2 drives the collet 6 to move into the hollow cavity.

The elastic collet 6 is installed in the hollow cavity of the fixed seat 7. The elastic collet 6 is a cavity structure, and one end thereof is a circular truncated structure. The linear drive mechanism drives the elastic collet 6 to move in the fixed seat 7. Change the accommodation radius of the cone-shaped structure to clamp the annular workpiece 9 . One end of the hollow cavity of the fixed seat 7 matched with the frustum-shaped structure is provided with a frustum-shaped cavity, and the frustum-shaped structure is provided with a number of deformation grooves along the axis direction to facilitate deformation, so that the frustum-shaped structure has a certain deformation capacity. , so that the elastic collet member 6 has elasticity.

An easy-to-install embodiment of the annular workpiece clamping device of the utility model: the elastic chuck member 6 is connected with a cylindrical pull rod 61, and the length of the pull rod 61 can be flexibly selected according to needs. One end of the pull rod 61 away from the annular workpiece 9 is fixedly connected to the fastener 5, and the fastener 5 includes a first fastener 51 and a second fastener 52, and the first fastener 51 and the second fastener 52 are in turn Screwed to the end of the pull rod to form an interlocking structure to prevent the fastener 5 from falling off from the end of the pull rod 61. The first fastener 51 and the second fastener 52 can be nuts, which is convenient for procurement. The first fastening member 51 protrudes from the pull rod 61 so that the pushing member can interfere with it. The moving part 2 includes a positive moving part 21 and a negative moving part 22. The positive moving part 21 and the negative moving part 22 are respectively rotatably connected to a positive pushing part 41 and a negative pushing part 42. The positive pushing part 41 is adjacent to the fastener 5 , the negative pusher 42 is adjacent to the fixed seat 7, and the upper edge of the fixed seat 7 protrudes from the negative pusher 42, forming a stop of the negative pusher 42, and limiting the lateral movement position of the negative pusher 42.

The push rod 3 moves downward to drive the right end of the positive moving part 21 to move downward, and its left end moves to the left, and then its left end drives the positive pushing part 41 to touch the fastener 5, driving the fastener 5 and the collet 6 to the left At the same time, the left end of the negative moving part 22 moves downward, and its right end moves to the right, driving the negative pushing part 42 to collide with the fixed seat 7, and the left end of the negative moving part 22 reversely pushes the push rod 3 to swing in the lateral direction of the positive moving part 21 , increasing the distance that the fastening member 5 and the elastic collet member 6 move to the left.

The blanking driving source 81 is a cylinder, one end of the piston rod 85 is connected with the blanking rod 82, and the other end is provided with an extension rod stretching out from the cylinder body, and a positioning seat 84 is arranged adjacent to the extension rod, and the positioning seat 84 A positioning column 83 for limiting the moving position of the extension rod is screwed, and the positioning column 83 is provided with a scale, which is convenient for observing the extension distance of the positioning column 83 .

The working principle of the present utility model: the annular workpiece 9 is put into the circular platform structure of the elastic chuck part 6 of the present utility model, the driving source 1 drives the push rod 3 to move downward, and the push rod 3 moves downward to drive the right end of the positive moving part 21 to Moving down, its left end moves to the left, and then its left end drives the positive pusher 41 against the fastener 5, driving the fastener 5 and the collet 6 to move to the left, and at the same time, the left end of the negative moving member 22 moves downward, its The right end moves to the right, driving the negative pusher 42 to collide with the fixed seat 7. Since the fixed seat is adjacent to the negative pusher, the negative movable member can only move a small amount to the right. At this time, the push rod continues to push the left end of the negative movable member to move down. Therefore, the left end of the negative moving part 22 reversely pushes the push rod 3 to swing in the lateral movement direction of the positive moving part 21, increasing the distance of the fastener 5 and the pull rod 61 moving to the left. At this time, the collet part 6 can bear the large lateral pulling force of the pull rod 61, the collet part 6 moves to the left, and the conical structure enters the hollow cavity of the fixing seat 7, and the internal size of the hollow cavity is fixed, so that the collet The end of the frustum-shaped structure of the head piece 6 produces a certain radial deformation, so that the inner wall surface of the frusto-conical structure collides with the outer ring wall surface of the ring-shaped workpiece 9 , thereby clamping the ring-shaped workpiece 9 .

When blanking is required, the drive source 1 drives one end of the moving part to move upwards, releasing the locking state of the collet part 6, and the collet part 6 is driven by the elastic deformation force of the cone-shaped structure, and the collet part 6 resets, and then The right blanking drive source 81 drives the blanking rod 82 to move to the right, and the annular workpiece 9 is released to complete the blanking of the annular workpiece 9. The utility model can clamp and unload the annular workpiece 9, the structure is convenient to manufacture, the application range is wide, and the scheme is practical.

The embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiment, and for those of ordinary skill in the art, some modifications and improvements can be made without departing from the premise of the utility model , these should also be regarded as belonging to the protection scope of the present utility model.

Claims (10)

1. a kind of straight line driving mechanism, including driving source（1）And the moving member being in tilted layout（2）, which is characterized in that the drive Dynamic source（1）The push rod vertically moved back and forth is set（3）, the push rod（3）With moving member（2）Rotation connection, the two extended line Angle is greater than or equal to 90 degree, vertically movable push rod（3）The moving member of drive incline arrangement（2）One end is vertically movable, mobile Part（2）In push rod（3）Limit under, other end transverse shifting, and then treat push piece and generate laterally driven power, the push rod （3）With moving member（2）Two groups are set as, the both sides for waiting for push piece are symmetricly set on.

2. a kind of straight line driving mechanism according to claim 1, which is characterized in that the moving member（2）Far from push rod（3） One end rotation connection one can only transverse shifting impeller（4）, the impeller（4）Conflict waits for push piece and pushes to wait for that push piece moves It is dynamic.

3. a kind of straight line driving mechanism according to claim 1, which is characterized in that the driving source（1）Mobile terminal（11） Lower surface open up concave notches, the push rod（3）Upper end stretch into notch with driving source（1）It is unidirectional to swing connection.

4. a kind of straight line driving mechanism according to claim 3, which is characterized in that the moving member（2）Including being used to push away It is dynamic to wait for the positive moving member that push piece is moved to side（21）, to the other side move negative moving member（22）, the positive moving member（21）、 Negative moving member（22）Upper end and push rod（3）Rotation connection.

5. a kind of straight line driving mechanism according to claim 4, which is characterized in that adjacent negative moving member（22）One gear of setting Portion, push rod（3）It moves down drive and bears moving member（22）Lower end transverse shifting contradicts stopper, bears moving member（22）Left end reverse push Dynamic push rod（3）To positive moving member（21）Transverse shifting direction is swung.

6. application is according to a kind of annular workpieces clamping device of any straight line driving mechanisms of claim 1-5, feature It is, includes the fixed seat with hollow cavity（7）, for contradicting annular workpieces（9）Elastic clip head（6）, elastic collet Part（6）It is installed on fixed seat（7）Hollow cavity in, the elastic clip head（6）For cavity body structure, one end is round table-like knot Structure, straight line driving mechanism drive elastic clip head（6）In fixed seat（7）Interior movement changes the receiving radius of round-like structure, folder Tight annular workpieces（9）.

7. annular workpieces clamping device according to claim 6, which is characterized in that the straight line driving mechanism passes through one Frame（12）It is set up in elastic clip head（6）Top, moving member（2）With elastic clip head（6）It is connected, moving member（2）Drive bullet Property clamp head piece（6）It is moved into hollow cavity.

8. annular workpieces clamping device according to claim 7, which is characterized in that elastic clip head（6）Far from annular work Part（9）One end be fixedly connected with fastener（5）, the fastener（5）Protrude from elastic clip head（6）；Moving member（2）Including just Moving member（21）, negative moving member（22）, the positive moving member（21）, negative moving member（22）It is rotatablely connected a positive impeller respectively （41）, negative impeller（42）, positive impeller（41）With fastener（5）It is adjacent, bear impeller（42）With fixed seat（7）It is adjacent, it pushes away Bar（3）It moves down and drives positive moving member（21）Right end moves down, and left end is moved to the left, and then the positive promotion of its left end driving Part（41）Contradict fastener（5）On, drive fastener（5）And elastic clip head（6）It is moved to the left；Negative moving member simultaneously（22） Left end moves down, and right end moves right, and drives and bears impeller（42）Contact at fixed seat（7）On, bear moving member（22）It is left End is reversed to push push rod（3）To positive moving member（21）Traversing direction is swung, and increases firmware and elastic clip head（6）It is moved to the left Distance.

9. annular workpieces clamping device according to claim 8, which is characterized in that further include for driving annular workpieces （9）The cutting agency of blanking（8）, the cutting agency（8）Including being arranged in elastic clip head（6）Blanking bar（82）, be used for Drive blanking bar（82）The blanking driving source of reciprocating movement（81）.

10. annular workpieces clamping device according to claim 9, which is characterized in that the blanking driving source（81）For gas Cylinder, piston rod（85）One end and blanking bar（82）It is connected, the extension rod for stretching out in cylinder body is arranged in the other end, adjacent to prolong A positioning seat is arranged in stock（84）, the positioning seat（84）Be spirally connected a positioning column for limiting extension rod shift position（83）, The positioning column（83）Scale is set.