CN115041942B

CN115041942B - Pressure head device

Info

Publication number: CN115041942B
Application number: CN202210972009.3A
Authority: CN
Inventors: 刘礼丰
Original assignee: SUZHOU TOX PRESSOTECHNIK CO Ltd
Current assignee: SUZHOU TOX PRESSOTECHNIK CO Ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-11-25
Anticipated expiration: 2042-08-15
Also published as: CN115041942A

Abstract

The invention discloses a pressure head device, which is used for pressing an elastic body into a workpiece and comprises a pressure head mechanism and a driving mechanism for driving the pressure head mechanism to move, wherein the pressure head mechanism comprises an installation plate, rong Natou arranged on the installation plate, a plurality of closing-in components and pushing-in components, the closing-in components and the pushing-in components are distributed on the periphery of the accommodating head, the closing-in components are movably arranged on the installation plate, the closing-in components are used for being close to each other in the pressing-in process and forming a cylinder for wrapping a convex ring, and the inner diameter of the cylinder is smaller than or equal to the inner diameter of the annular bulge; the pushing assembly is used for pushing the convex ring into the annular groove from the cylinder, and the accommodating head is used for accommodating the elastic body. The pressure head device is compact in structure, convenient to use and good in pressing effect.

Description

Pressure head device

Technical Field

The invention belongs to the technical field of press-fitting equipment, and particularly relates to a pressure head device suitable for pressing an elastomer into a workpiece in an interference manner.

Background

In automobile air suspension and similar occasions for assembling elastic bodies containing high-elasticity polyurethane or rubber parts and the like, the elastic bodies containing the elastic rubber are pressed into holes with lock catch structures or barb structure characteristics to complete the fixation of the elastic bodies. Also, these elastomers often include additional iron rings or ring-like parts (metal rings) for bearing forces during subsequent assembly and press-in.

The conventional pressing method comprises two ways of manual pressing and pressing by adopting a pressing device. Wherein, manual pressing needs to use a tool to press the interference position, and the elastomer is gradually pressed in; the pressing-in by adopting a pressure device is to directly press the elastic body downwards by pressure, and a closing-in or similar structure is used to lead the convex ring of the elastic body to enter the annular groove of the workpiece through the transition guidance of the chamfer fillet characteristic of the elastic body and the chamfer fillet characteristic of the workpiece to be pressed in.

However, the manual pressing method is time-consuming and labor-consuming, low in efficiency and has certain potential safety hazard; the pressure equipment is pressed in to have a certain fraction defective, and for many occasions with high elasticity, high friction coefficient or low pressing depth but high closing-in amount, the situation that the elastic body is not pressed in a certain local area still occurs, namely the convex ring of the elastic body does not completely enter the annular groove of the workpiece. Meanwhile, the additional metal ring of the elastic body further compresses the pressing-in space and the closing-in space, and influences are caused on the pressing-in of the elastic body, so that the yield of products is reduced.

Therefore, in the prior art, due to the high interference magnitude and high elasticity of the elastic body, partial areas of the convex ring of the elastic body cannot completely enter the annular groove of the workpiece, so that the convex ring cannot be pressed in place, the anti-disengagement requirement cannot be met, and the disengagement risk exists.

Disclosure of Invention

In view of the above, in order to overcome the drawbacks of the prior art, the present invention provides a pressing head device capable of completely press-fitting a convex ring of an elastomer into a ring groove of a workpiece by interference.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a pressure head device, pressure head device is used for impressing the elastomer to the work piece in, set up in the work piece and be used for holding the cavity of elastomer, the bottom of cavity is provided with the annular, the top of annular has the annular arch of continuous or intermittent setting, the bellied internal diameter of annular is less than the internal diameter of annular, it needs the interference to impress to have on the elastomer to arrive the bulge loop in the annular, the external diameter of bulge loop equals or is greater than the external diameter of annular, pressure head device includes pressure head mechanism and is used for driving the actuating mechanism that pressure head mechanism moved, pressure head mechanism includes the mounting panel, sets up Rong Natou and a plurality of close-up subassemblies and the push-in subassembly on the mounting panel, close-in subassembly with push-in subassembly distribution hold the periphery of head, close-in subassembly activity sets up on the mounting panel, a plurality of close-in subassembly is used for being close to each other and forming the drum of parcel bulge loop in the in-process of impressing, the internal diameter of drum is less than or is equal to the bellied internal diameter of annular; the pushing assembly is used for pushing the convex ring into the annular groove from the cylinder, and the accommodating head is used for accommodating the elastic body.

According to some preferred embodiments of the present invention, a plurality of the closing-up components are uniformly spaced at the periphery of the receiving head; the plurality of pushing assemblies are uniformly distributed at intervals on the periphery of the accommodating head; the closing-in component and the pushing-in component are alternately arranged at intervals; the distance between the pushing assembly and the accommodating head is smaller than the distance between the closing-in assembly and the accommodating head. The closing-in components approach each other by taking the axial lead of the containing head as the center in the pressing-in process to gradually form a cylinder, and then a convex ring is wrapped in the radial direction of the elastic body. Meanwhile, the pushing assembly is closer to Rong Natou relative to the closing-in assembly, and in the process of continuously pressing in after the closing-in assembly forms a cylinder wrapping convex ring, the pushing assembly pushes the convex ring contained in the cylinder into the ring groove of the workpiece.

According to some preferred implementation aspects of the invention, the closing-in assembly comprises a sliding block horizontally slidably arranged on the mounting plate and a closing-in block vertically slidably arranged on the sliding block, the closing-in block is positioned below the sliding block, and the closing-in blocks form the cylinder after being mutually close. The movement of the sliding block drives the closing-in block to move; in the pressing-in process, the closing-in blocks move to one side close to the sliding block and the accommodating head, and the closing-in blocks are close to each other.

According to some preferred implementation aspects of the invention, the mounting plate is provided with a mounting opening, a first guide rod is arranged in the mounting opening, and the sliding block is slidably arranged on the first guide rod. Preferably, the first guide rods are arranged in parallel to guide the horizontal movement of the slider.

According to some preferred embodiments of the present invention, the extending direction of the first guide rod is parallel to the radial direction of the receiving head to drive the closing blocks to move away from or close to each other around the axis of the receiving head or the elastic body.

According to some preferred implementation aspects of the invention, a first elastic element is arranged between the sliding block and the mounting plate, and the first elastic element is used for driving the sliding block to move outwards along the radial direction of the accommodating head so as to drive the sliding block to reset.

According to some preferred implementation aspects of the invention, a second guide rod is arranged on the sliding block, a second elastic piece is arranged on the second guide rod, one end of the second elastic piece acts on the sliding block, and the other end of the second elastic piece acts on the closing-in block; the second elastic piece is used for driving the closing block to move towards the direction far away from the sliding block and driving the closing block to reset. The second guide rods are preferably arranged in parallel to guide the movement of the closing-in block in the vertical direction.

According to some preferred embodiments of the present invention, the extending direction of the second guide rod is perpendicular to the extending direction of the first guide rod, the sliding block, the first guide rod and the first elastic member are configured to drive the closing block to move in the horizontal direction, and the second guide rod and the second elastic member are configured to drive the closing block to move in the vertical direction. The first guide rod and the second guide rod are arranged through the sliding block, and the sliding block moves along the first guide rod when the closing-up block moves horizontally; when the closing-in block vertically moves, the second guide rod moves up and down relative to the sliding block to change the distance between the closing-in block and the sliding block, so that the closing-in block moves up and down.

According to some preferred embodiments of the invention, the cavity of the workpiece has a push-in surface, which is arranged obliquely and is used for contacting the outer wall of the closing blocks and for pushing the plurality of closing blocks in the direction of approaching the receiving head. Namely, the outer wall of the closing-in block is matched with the pushing-in surface to drive the closing-in blocks to mutually approach to form a cylinder.

According to some preferred implementation aspects of the invention, the pushing assembly comprises a mounting block and a pushing plate rotatably connected to the mounting block, and a third elastic element is arranged between the pushing plate and the mounting block. When the annular bulges are arranged at intervals, the pushing assembly and the pushing plate are arranged at intervals between the adjacent annular bulges so as to better push the convex ring of the elastic body into the annular groove of the workpiece. For example, when 3 annular bulges are arranged on the annular groove at intervals, three groups of closing-in components and pushing-in components are correspondingly arranged, and the pushing-in components are arranged at positions corresponding to the intervals between the adjacent annular bulges.

According to some preferred implementation aspects of the present invention, a position of the closing-in block corresponding to the pushing plate is provided with a guiding inclined plane, and the guiding inclined plane is used for guiding the lower end of the pushing plate during the pressing-in process so that the lower end of the pushing plate contacts with the convex ring, and further the pushing plate pushes the convex ring into the annular groove during the pressing-in process. The lower extreme of pushing in the board sets up for the arc, prevents to cause the damage to the elastomer.

According to some preferred implementation aspects of the invention, an adsorption cavity for accommodating the elastic body is formed in the accommodating head, the adsorption cavity is communicated with a negative pressure assembly, and the negative pressure assembly is used for enabling negative pressure to be formed in the adsorption cavity so as to adsorb the elastic body. The absorption cavity is internally provided with an insertion pin for inserting the elastic body, and the insertion pin can position the elastic body and prevent air leakage.

According to some preferred embodiments of the present invention, the driving mechanism includes a gear and a rack engaged with each other, the gear is provided with a handle, and the rack is connected to the mounting plate. The handle drives the gear to rotate, drives the rack to move in the vertical direction, and then drives the pressure head mechanism to move to press in.

The elastomer in the invention refers to high elastic polyurethane or rubber parts, and the like, and preferably the elastomer with the elastic modulus of 5-600MPa when the Shore hardness is between 10A-80D.

Compared with the prior art, the invention has the advantages that: the pressure head device adopts a plurality of closing-in components to form a cylinder for wrapping a convex ring in a combined mode, the convex ring is extruded in the radial direction to form a closing-in path for pressing in, and meanwhile, the convex ring is pushed into a ring groove from the cylinder by using a pushing-in component; the device has compact structure, convenient use and good pressing effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic perspective view of a workpiece;

FIG. 2 is a schematic top view of a workpiece;

FIG. 3 isbase:Sub>A schematic sectional view taken along line A-A in FIG. 2;

FIG. 4 is a schematic side view of an elastomer;

FIG. 5 is a schematic top view of the elastomer;

FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a schematic cross-sectional view of the elastomer raised ring fully pressed into the ring groove of the workpiece;

FIG. 8 is a schematic perspective view of a ram assembly in accordance with a preferred embodiment of the present invention;

FIG. 9 is a front view of the indenter device in accordance with the preferred embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view taken along line C-C of FIG. 9;

fig. 11 and 12 are schematic perspective views of the pressing head mechanism in different viewing angles according to the preferred embodiment of the present invention;

FIG. 13 is a schematic bottom view of the ram mechanism in the preferred embodiment of the invention;

FIG. 14 is a schematic cross-sectional view taken along line D-D of FIG. 13;

figure 15 is a schematic perspective view of a cuff assembly in accordance with a preferred embodiment of the present invention;

FIGS. 16 and 17 are schematic perspective views of a push-in assembly of a preferred embodiment of the present invention from different perspectives;

fig. 18, 19 and 20 are schematic sectional structures of the pressing head mechanism in different states during pressing in according to the preferred embodiment of the invention;

FIG. 21 is a schematic perspective view of a ram mechanism in accordance with another preferred embodiment of the present invention;

FIG. 22 is a schematic cross-sectional view of the ram mechanism of FIG. 21;

in the drawing, a pressure head device-1, a driving mechanism-2, a gear-21, a rack-22, a handle-23, a pressure head mechanism-3, a mounting plate-31, a mounting opening-311, a containing head-32, an adsorption cavity-321, an insertion pin-322, a closing-in component-33, a sliding block-331, a closing-in block-332, a first guide rod-333, a first elastic piece-334, a second guide rod-335, a second elastic piece-336, a guide inclined plane-337, a pushing-in component-34, a mounting block-341, a pushing-in plate-342, a third elastic piece-343, a workpiece-4, a cavity-41, an annular groove-42, an annular bulge-43, a pushing-in surface-44, an elastic piece-5, a convex ring-51, a metal ring-52, a third guide rod-61, a fourth elastic piece-62 and an auxiliary closing-opening plate-63.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

The indenter device 1 of the present embodiment is used for interference pressing the elastic body 5 shown in fig. 4-6 into the workpiece 4 shown in fig. 1-3, and the schematic view of the elastic body 5 completely pressed into the workpiece 4 is shown in fig. 7. As shown in fig. 1-3, a cavity 41 for accommodating the elastic body 5 is formed in the workpiece 4, a ring groove 42 is formed at the bottom of the cavity 41, an annular protrusion 43 is intermittently arranged above the ring groove 42, and the inner diameter of the annular protrusion 43 is smaller than that of the ring groove 42. As shown in fig. 4 to 6, the elastic body 5 is provided with a protruding ring 51 which is pressed into the ring groove 42 by interference, and the outer diameter of the protruding ring 51 is equal to or larger than the outer diameter of the ring groove 42. Further, the elastic body 5 has a metal ring 52 thereon.

As shown in fig. 8 to 20, the pressing head device 1 in this embodiment, which is suitable for interference pressing of the elastic body 5 into the workpiece 4, includes a pressing head mechanism 3 and a driving mechanism 2 for driving the pressing head mechanism 3 to move in a vertical direction for pressing action, and the pressing head mechanism 3 includes a mounting plate 31, a receiving head 32 disposed on the mounting plate 31, and a plurality of closing-in assemblies 33 and pushing-in assemblies 34 distributed on the periphery of the receiving head 32. The mounting plate 31 is provided with a mounting opening 311, and the closing-in component 33 is mounted in the mounting opening 311. The accommodating head 32 is internally provided with an adsorption cavity 321 for accommodating the elastic body 5, the adsorption cavity 321 is communicated with the negative pressure assembly, and the negative pressure assembly enables negative pressure to be formed in the adsorption cavity 321 to adsorb the elastic body 5. An insertion pin 322 for inserting the elastic body 5 is provided in the adsorption cavity 321, and the insertion pin 322 can position the elastic body 5 and prevent air leakage.

As shown in fig. 11-15, a plurality of closing-in assemblies 33 are uniformly spaced at the periphery of the accommodating head 32, and a plurality of pushing-in assemblies 34 are uniformly spaced at the periphery of the accommodating head 32; the closing-in components 33 and the pushing-in components 34 are alternately arranged at intervals; the distance between the pushing assembly 34 and the receiving head 32 is smaller than the distance between the closing-in assembly 33 and the receiving head 32. The annular protrusions 43 in this embodiment are 3 protrusions arranged symmetrically at the center, and the 3 annular protrusions 43 are located on the same circumference. In order to better push the convex ring 51 of the elastic body 5 into the ring groove 42 of the workpiece 4, the number and the positions of the closing-in assembly 33 and the pushing-in assembly 34 are respectively arranged corresponding to the number and the positions of the annular protrusions 43. Namely, three sets of closing-in assemblies 33 and three sets of pushing assemblies 34 are correspondingly arranged on the pressing head mechanism 3 in this embodiment, and the pushing assemblies 34 are arranged at positions corresponding to the intervals between the adjacent annular protrusions 43.

The three closing-in assemblies 33 in this embodiment approach each other with the axial center of the receiving head 32 as the center during the pressing-in process, and gradually form a cylinder for wrapping the outer circumference of the convex ring 51, thereby wrapping and pressing the convex ring 51 in the radial direction. Meanwhile, the pushing-in assembly 34 is closer to the receiving head 32 than the closing-in assembly 33, so that the pushing-in assembly 34 pushes the convex ring 51 received in the interior of the cylinder into the ring groove 42 of the workpiece 4 in the process of pressing-in after the closing-in assembly 33 forms the cylinder-wrapped convex ring 51.

The closing-in component 33 includes a first guide rod 333 disposed in the mounting opening 311, a sliding block 331 slidably disposed on the first guide rod 333, a first elastic member 334 sleeved on the first guide rod 333, a second guide rod 335 disposed through the sliding block 331, a second elastic member 336 sleeved on the second guide rod 335, and a closing-in block 332 disposed at a lower end of the second guide rod 335. The extending direction of the first guide rod 333 is parallel to the radial direction of the accommodating head 32 to drive the closing blocks 332 to move away from or close to each other with the axis line of the accommodating head 32 or the elastic body 5 as the center. The extending direction of the second guide bar 335 and the extending direction of the first guide bar 333 are perpendicular to each other. One end of the first elastic member 334 acts on the slider 331 and the other end acts on the inner wall of the mounting opening 311, and the first elastic member 334 is used to drive the slider 331 to move outward in the radial direction of the accommodating head 32 for the return of the slider 331. One end of the second elastic member 336 acts on the slider 331, and the other end of the second elastic member 336 acts on the closing block 332; the second elastic member 336 is used for driving the closing block 332 to move away from the sliding block 331, so as to reset the closing block 332.

The slider 331, the first guide rod 333 and the first elastic member 334 are for driving the closing block 332 to move in the horizontal direction, and the second guide rod 335 and the second elastic member 336 are for driving the closing block 332 to move in the vertical direction. The first guide rod 333 and the second guide rod 335 are both arranged through the sliding block 331, when the closing-in block 332 moves horizontally, the sliding block 331 moves along the first guide rod 333, and when the closing-in block 332 moves vertically, the second guide rod 335 moves up and down relative to the sliding block 331 to change the distance between the closing-in block 332 and the sliding block 331, so that the closing-in block 332 moves up and down. In order to realize smooth movement of the closing block 332 during the movement, it is preferable to provide two parallel first guide rods 333 for guiding the movement of the slider 331 in the horizontal direction; the second guide rods 335 are preferably arranged in parallel to guide the movement of the closing-in block 332 in the vertical direction, and the two second guide rods 335 are located between the two first guide rods 333. The first elastic member 334 and the second elastic member 336 are each preferably a spring.

As shown in fig. 1 to 3, the cavity 41 of the workpiece 4 has a pushing-in surface 44 therein, the pushing-in surface 44 is disposed obliquely, and the pushing-in surface 44 is used for contacting with the outer wall of the closing-in block 332 and pushing the plurality of closing-in blocks 332 toward the direction of approaching the receiving head 32 during the pressing-in process. That is, the outer wall of the closing-in block 332 cooperates with the pushing-in surface 44 for driving the plurality of closing-in blocks 332 to approach each other to form a cylinder. The top of the pushing-in surface 44 and the bottom of the outer wall of the closing-in block 332 are both arc-shaped, so that the closing-in block 332 can better enter the pushing-in surface 44 to cooperate with the pushing-in surface 44 to realize pushing of the closing-in block 332. Preferably, the angle between the outer wall of the closing-in piece 332 and the horizontal plane is the same as the angle between the pushing-in face 44 and the horizontal plane, and more preferably 60 °. That is, the pushing-in surface 44 and the outer wall of the closing-in block 332 cooperate to drive the closing-in block 332 to move toward the direction of approaching the accommodating head 32 during the pressing-in process; and the first resilient member 334 is adapted to drive the closing-in block 332 away from the receiving head 32 during the reset process.

Meanwhile, the inner wall of the closing block 332 in this embodiment is also inclined, so that the convex ring 51 of the elastic body 5 can smoothly enter the cylinder. Preferably, the included angle between the inner wall of the closing-in block 332 and the horizontal plane is larger than the included angle between the outer wall of the closing-in block 332 and the horizontal plane, and further preferably, the included angle between the inner wall of the closing-in block 332 and the horizontal plane is 70 °.

In other embodiments, if the cavity 41 of the workpiece 4 is not designed with a similar pushing-in surface 44 as in the present embodiment, an additional auxiliary closing-in component may be used to achieve the pushing-in of the closing-in block 332, as shown in fig. 21 and 22. That is, in the case that the workpiece 4 to be pressed into the lower side does not have the inclined pushing-in surface 44, an additional auxiliary closing-in assembly may be integrated on the pressing head mechanism 3, and the additional auxiliary closing-in assembly includes a third guide rod 61 penetrating through the mounting plate 31, a fourth elastic member 62 sleeved outside the third guide rod 61, and an auxiliary closing-in plate 63 fixed under the third guide rod 61, wherein one end of the fourth elastic member 62 acts on the mounting plate 31, and the other end acts on the auxiliary closing-in plate 63. The auxiliary closing plate 63 is provided with a structure similar to the pushing surface 44 in the cavity 41 of the workpiece 4, so that the pressing head mechanism 3 can complete closing shrinkage, and the application range of the pressing head mechanism 3 is greatly expanded.

As shown in fig. 11 to 14, 16 and 17, the push-in assembly 34 includes a mounting block 341, a push-in plate 342 rotatably coupled to the mounting block 341, and a third elastic member 343 disposed between the push-in plate 342 and the mounting block 341. The mounting block 341 is fixed to the mounting plate 31, and the third elastic member 343 is a torsion spring. The third elastic member 343 is used to drive the lower portion of the push-in plate 342 to rotate outward, i.e., away from the side of the receiving head 32, for returning the push-in plate 342 after the press-in operation. Meanwhile, the top of the pushing plate 342 is far away from one side of the accommodating head 32, the upper portion of the pushing plate is arc-shaped, the pushing plate 342 is convenient to rotate, the lower portion of the pushing plate is plane-shaped, and the pushing plate is used for being matched with the mounting block 341, so that the pushing plate 342 keeps a vertical position when the pushing state is not carried out, the lower end of the pushing plate 342 is prevented from rotating to the outer side of the opening block 332, and the pushing effect cannot be played when the pushing is carried out is avoided. Due to the structure of the pushing assembly 34, the metal ring 52 of the elastic body 5 can be effectively avoided.

The closing block 332 is provided with a guiding inclined surface 337 at a position corresponding to the pushing plate 342, and preferably, the guiding inclined surface 337 forms an angle of 45 ° with respect to the horizontal plane. The guide slope 337 serves to guide the rotation of the push-in plate 342 such that the lower end of the push-in plate 342 contacts the male ring 51 and pushes the male ring 51 into the ring groove 42 during the press-in. The lower end of the push-in plate 342 is formed in an arc shape to prevent damage to the elastic body 5. The top and bottom of the guiding ramp 337 are also arranged with an arc-shaped transition.

As shown in fig. 8-10, the driving mechanism includes a gear 21 and a rack 22 engaged with each other, the gear 21 is provided with a handle 23, and the rack 22 is connected to the mounting plate 31. The handle 23 drives the gear 21 to rotate, and drives the rack 22 to move in the vertical direction, so as to drive the pressing head mechanism 3 to move, and perform pressing action.

The working process of the indenter device 1 in the present embodiment, which is suitable for interference-pressing the elastic body 5 into the workpiece, is briefly described as follows:

in the initial state, the 3 sets of closing-in assemblies 33 are away from each other to be in an open state, and a channel for feeding the elastic body 5 is formed between the 3 sets of closing-in assemblies 33. The slider 331 is located at a side of the mounting opening 311 away from the accommodating head 32, the closing-in block 332 is away from the slider 331, and the pushing-in plate 342 of the pushing-in assembly 34 is not rotated and maintains a vertical direction.

The elastic body 5 is put into the receiving head 32, the insertion pin 322 is inserted into the elastic body 5, the elastic body 5 is adsorbed in the receiving head 32, and the bottom surface of the push-in plate 342 is higher than the top surface of the convex ring 51. Then, the workpiece 4 is placed below the pressing head mechanism 3, the handle 23 is rotated, and the pressing head mechanism 3 is driven to move downward by the gear 21 and the rack 22 to press in.

As shown in fig. 18, at the beginning of press-fitting, the positional relationship between the 3 components of the indenter mechanism is not changed. When the outer wall of the closing block 332 touches the pushing surface 44 in the cavity 41, the closing block 332 moves toward the direction close to the accommodating head 32 under the cooperation between the pushing surface 44 and the outer wall of the closing block 332, the three closing assemblies 33 approach each other, and simultaneously, the whole pressing head mechanism 3 moves downward. When the bottom of the closing-in block 332 contacts the upper surface of the annular protrusion 43, the three closing-in blocks 332 are gathered to form a cylinder for radially wrapping and pressing the convex ring 51 of the elastic body 5. The inner diameter of the cylinder is less than or equal to the inner diameter of the annular projection 43.

The pressing is continued, at this time, due to the resisting of the annular protrusion 43 and the action of the second elastic member 336, the horizontal height of the closing-up block 332 is unchanged, and the height of the elastic body 5 is continuously lowered, so that the convex ring 51 of the elastic body 5 enters the cylinder formed by the closing-up block 332. At the same time, the pushing plate 342 starts to rotate under the action of the guiding inclined surface 337 of the closing-in block 332, and the lower end of the pushing plate 342 enters above the convex ring 51 of the elastic body 5, as shown in fig. 19.

Continuing to depress, containment head 32 and elastomer 5 therein continue to move downwardly. Meanwhile, the lower end of the pushing plate 342 contacts the convex ring 51 and presses the convex ring 51 downward, the convex ring 51 is radially wrapped by the cylinder formed by the closing-in block 332 and the convex ring 51 finally enters the ring groove 42 under the condition that the pushing plate 342 applies an obliquely downward force, and the pressing action is finished.

Then, in the process of resetting, the push-in plate 342 is gradually rotated and reset under the action of the third elastic member 343. Under the action of the second elastic member 336, the distance between the sliding block 331 and the closing-in block 332 gradually increases. Under the action of the first elastic member 334, the slider 331 moves to the side away from the housing head 32, as shown in fig. 20. Finally, the state returns to the initial state to wait for the next press-in. The arrow above the containing head 32 in fig. 18 to 20 indicates the moving direction of the pressure head mechanism 3.

According to the pressure head device for pressing the elastomer into the workpiece in an interference manner, through the structural design of the closing-in component and the pushing-in component, a closing-in path for pressing in can be formed while avoiding the metal ring by applying downward pressure, so that a high-elasticity body can be completely ensured to enter and be pressed into a lock catch ring groove of the workpiece, and meanwhile, the whole closing-in component and the pushing-in component are compact in structure, high integration is kept, so that the whole process can be realized through only one pressing action, and better expansibility and universality are realized; the workpiece can be effectively detected to be placed in place by matching with the vacuum degree detection of the accommodating head; according to the structure of other similar workpieces, the number of the closing-in assemblies and the pushing-in assemblies can be adjusted, and other similar high elastic bodies can be pressed in.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a pressure head device, pressure head device is used for impressing the elastomer to the work piece in, it is used for holding to have seted up in the work piece the cavity of elastomer, the bottom of cavity is provided with the annular, the top of annular has the annular arch of continuous or intermittent type setting, the bellied internal diameter of annular is less than the internal diameter of annular, it needs the interference to impress extremely to have on the elastomer bulge loop in the annular, the external diameter of bulge loop equals or is greater than the external diameter of annular, the cover is equipped with becket, its characterized in that on the elastomer: the pressing head device comprises a pressing head mechanism and a driving mechanism used for driving the pressing head mechanism to move, the pressing head mechanism comprises an installation plate, rong Natou arranged on the installation plate, a plurality of closing-in assemblies and a pushing assembly, the closing-in assemblies and the pushing assembly are distributed on the periphery of the containing head, the closing-in assemblies are movably arranged on the installation plate, the closing-in assemblies are used for being close to each other in the pressing-in process and forming a cylinder wrapping the convex ring, and the inner diameter of the cylinder is smaller than or equal to that of the annular bulge; the pushing assembly is used for pushing the convex ring into the annular groove from the cylinder, and the accommodating head is used for accommodating the elastic body;

the closing-in assemblies are uniformly distributed on the periphery of the accommodating head at intervals; the plurality of pushing assemblies are uniformly distributed at intervals on the periphery of the accommodating head; the closing-in component and the pushing-in component are alternately arranged at intervals; the distance between the pushing assembly and the accommodating head is smaller than the distance between the closing-in assembly and the accommodating head;

the closing-in assembly comprises a sliding block horizontally arranged on the mounting plate in a sliding mode and closing-in blocks vertically arranged on the sliding block in a sliding mode, and the closing-in blocks are close to each other to form the cylinder;

the pushing assembly comprises an installation block and a pushing plate which is rotatably connected to the installation block, and a third elastic piece is arranged between the pushing plate and the installation block;

the position that the closing-in piece corresponds the push-in plate is provided with the direction inclined plane, it is right at the in-process of impressing that the direction inclined plane is used for the lower extreme of push-in plate leads to make the lower extreme of push-in plate with the bulge loop contacts, the push-in plate will the bulge loop pushes in extremely in the annular.

2. A ram apparatus as claimed in claim 1, wherein: the mounting plate is provided with a mounting opening, a first guide rod is arranged in the mounting opening, and the sliding block is arranged on the first guide rod in a sliding mode.

3. A ram apparatus as claimed in claim 2, wherein: the extending direction of the first guide rod is parallel to the radial direction of the accommodating head.

4. A ram apparatus as claimed in claim 2, wherein: the slider with be provided with first elastic component between the mounting panel, first elastic component is used for the drive the slider is followed hold radial outside removal of head.

5. A ram apparatus as claimed in claim 2, wherein: a second guide rod is arranged on the sliding block, a second elastic piece is arranged on the second guide rod, one end of the second elastic piece acts on the sliding block, and the other end of the second elastic piece acts on the closing-in block; the second elastic piece is used for driving the closing block to move towards the direction far away from the sliding block.

6. A ram apparatus as claimed in claim 5, wherein: the extending direction of the second guide rod is perpendicular to the extending direction of the first guide rod, the sliding block, the first guide rod and the first elastic piece are used for driving the closing block to move in the horizontal direction, and the second guide rod and the second elastic piece are used for driving the closing block to move in the vertical direction.

7. The ram apparatus of claim 1, wherein: the cavity of the workpiece is internally provided with a pushing surface which is obliquely arranged, and the pushing surface is used for contacting with the outer wall of the closing block and pushing the closing blocks to the direction close to the accommodating head.

8. The ram apparatus of claim 1, wherein: the holding head is internally provided with an adsorption cavity for holding the elastic body, the adsorption cavity is communicated with the negative pressure assembly, and the negative pressure assembly is used for enabling negative pressure to be formed in the adsorption cavity so as to adsorb the elastic body.

9. A ram apparatus as claimed in claim 1, wherein: the driving mechanism comprises a gear and a rack which are mutually meshed, a handle is arranged on the gear, and the rack is connected with the mounting plate.