Summary of the invention
The purpose of the present invention is to provide a kind of feeding step pitch control mechanisms, not true in mold changing or changing shifts to solve employee
Recognize link assembly state, the problem of causing mechanism to damage directly is operated when link assembly is in jacking state.
The present invention provides a kind of feeding step pitch control mechanism, including link assembly, limited block and cylinder, link assembly installation
Between limited block and cylinder, feeding step pitch control mechanism further includes knock pin and elastic component, and knock pin and elastic component are mounted on
In limited block, elastic component, which acts on knock pin, makes knock pin have the trend moved towards link assembly, and knock pin is close to even
One end of bar assembly and link assembly are against when the cylinder stuffiness, the knock pin pushes the link assembly to institute
State the movement of cylinder direction.
Further, mounting hole is equipped in limited block in the horizontal direction, elastic component and knock pin are mounted in mounting hole.
Further, elastic component is spring.
Further, link assembly includes end to end first connecting rod, second connecting rod, third connecting rod and fourth link,
The position of first connecting rod is fixed, and third connecting rod is located above first connecting rod, and second connecting rod and fourth link are located at the first company
The both ends of bar, second connecting rod connect close to one end of link assembly with the 4th close to cylinder, fourth link close to limited block, knock pin
Bar against.
Further, the both ends of second connecting rod are hinged with first connecting rod and third connecting rod respectively, the both ends point of third connecting rod
Not hinged with second connecting rod and fourth link, the both ends of fourth link are hinged with third connecting rod and first connecting rod respectively, and first connects
Bar is arranged in parallel with third connecting rod, and second connecting rod is arranged in parallel with fourth link.
Further, a connecting plate is installed, one end of connecting plate connects with second between second connecting rod and the cylinder rod of cylinder
Bar is hinged, and the other end and cylinder rod of connecting plate are hinged.
Further, the rest position that the fourth link of knock pin and link assembly abuts each other is higher than connecting plate and second
The hinged hinge joint position of connecting rod.
It further, further include the inductive component for controlling cylinder, inductive component is connected with link assembly.
A kind of wrapping mold, including lower die holder and the above-mentioned feeding step pitch control mechanism for being installed on lower die holder.
Further, wrapping mold is luggage case wrapping mold.
The beneficial effects of the present invention are: increasing knock pin on the basis of original mechanism as automatic reset device, pass through top
Pin pushes four-bar mechanism out, four-bar mechanism can be made to automatically reset by knock pin under the obstructed gaseity of cylinder, improves
Mechanism reliability safety avoids causing mechanism to damage because of operation error.And structure is simple, with common double leval jib component phase
Than merely adding reset knock pin;Reliable in action, link assembly jack exhaust hood air inlet and close, and link assembly can rely on
Knock pin pushes link assembly to automatically reset in own wt.
Specific embodiment
It is of the invention to reach the technical approach and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Accompanying drawings and embodiments, to a specific embodiment of the invention, structure, feature and its effect, detailed description is as follows.
Please join Fig. 2 to Fig. 5, the feeding step pitch control mechanism of the embodiment of the present invention, including link assembly 10, knock pin 20,
Limited block 30, lower die holder 40 and cylinder 50, link assembly 10 are mounted between limited block 30 and cylinder 50, and knock pin 20 is mounted on
In limited block 30, limited block 30 is fixed on lower die holder 40, and link assembly 10 includes end to end four connecting rods, i.e. first connecting rod
11, second connecting rod 12, third connecting rod 13 and fourth link 14.
Wherein, first connecting rod 11 is fixed on lower die holder 40, and the position of first connecting rod 11 is fixed, and third connecting rod 13 is located at first
11 top of connecting rod, second connecting rod 12 and fourth link 14 are located at the both ends of first connecting rod 11, and second connecting rod 12 is close to cylinder
50, fourth link 14 close to limited block 30, knock pin 20 close to link assembly 10 one end and fourth link 14 against.
The both ends of second connecting rod 12 are hinged with first connecting rod 11 and third connecting rod 13 respectively, the both ends difference of third connecting rod 13
Hinged with second connecting rod 12 and fourth link 14, the both ends of fourth link 14 are cut with scissors with third connecting rod 13 and first connecting rod 11 respectively
It connects, first connecting rod 11 is arranged in parallel with third connecting rod 13, and second connecting rod 12 is arranged in parallel with fourth link 14.
One connecting plate 90 is installed, one end of connecting plate 90 connects with second between second connecting rod 12 and the cylinder rod 51 of cylinder 50
Bar 12 is hinged, and the other end and cylinder rod 51 of connecting plate 90 are hinged.
Feeding step pitch control mechanism further includes elastic component 70, and knock pin 20 and elastic component 70 are mounted in limited block 30, bullet
Property part 70 act on and make knock pin 20 that there is the trend that moves towards link assembly 10 on knock pin 20, knock pin 20 is close to connecting rod
One end of component 10 and link assembly 10 against.Mounting hole 80, elastic component 70 and ejection are equipped in limited block 30 in the horizontal direction
Pin 20 is mounted in mounting hole 80.The rest position that the fourth link 14 of knock pin 20 and link assembly 10 abuts each other, which is higher than, to be connected
Fishplate bar 90 and the hinged hinge joint position of second connecting rod 12.Preferably, elastic component can be spring, but not limited to this, it can also be with
It is that can push other elastic components such as elastic slice etc. moved outside knock pin 20.
Referring to Fig. 2, cylinder 50 is ventilated, the cylinder rod of cylinder 50 when feeding step pitch control mechanism is on line state
51 stretch out, and push the movement of link assembly 10 to be located at jacking state by connecting plate 90.Jacking shape is in link assembly 10
When state, knock pin 20 of the fourth link 14 of link assembly 10 on limited block 30, limited block 30 is pressed by fourth link 14
In limited block 30, the spring 70 in knock pin 20 is in compressive state, and knock pin 20 is also at retracted mode.
Fig. 3 and Fig. 4 are please referred to, in 50 stuffiness of cylinder, knock pin 20 is for pushing link assembly 10 from jacking state
Move to decline state.When 50 stuffiness of cylinder, springback in knock pin 20 is ejected knock pin 20, and knock pin 20
Further the fourth link 14 of link assembly 10 is pushed to move right, reached when knock pin 20 pushes fourth link 14 to move right
Certain displacement, such as when the angle of fourth link 14 and limited block 30 being made to be greater than 5 °, link assembly 10 will be acted in own wt
It is lower mobile to off-position, it is final to automatically reset by the own wt of link assembly 10, drop to extreme lower position.
Preferably, the rest position that the fourth link 14 of knock pin 20 and link assembly 10 abuts each other is higher than connecting plate 90
The hinge joint position hinged with second connecting rod 12, such knock pin 20 push the fourth link 14 of link assembly 10 to move right
When, it will be more labor-saving.Specifically, the rest position that the fourth link 14 of knock pin 20 and link assembly 10 abuts each other can be the
The medium position of double leval jib 14, connecting plate 90 and the hinged hinge joint position of second connecting rod 12 can be close to lower die holder 40.
Further, first connecting rod 11 can be fixed on pedestal 40 by fixing bolt part 41, to improve the first company
The mounting stability of bar 11, while simplifying the structure of link assembly 10.First connecting rod 11 can also be direct by modes such as welding
It is mounted on lower die holder 40.
Further, first connecting rod 11 is arranged in parallel with third connecting rod 13, and second connecting rod 12 is parallel with fourth link 14
Setting, then 10 hinge joint of link assembly forms parallelogram, biggish stroke is capable of providing during the work time, to expand
The scope of activities of workpiece.
First connecting rod 11 is not limited to be arranged in parallel with third connecting rod 13, can also when guaranteeing device scope of activities, two
Person can have angle appropriate.Similarly, second connecting rod 12 is also not limited to fourth link 14 and is arranged in parallel, and can guarantee to fill
When setting scope of activities, the two can have angle appropriate.
Further, above-mentioned feeding step pitch control mechanism further includes the inductive component 60 for controlling cylinder 50, inductive component 60
It is connected with link assembly 10.When feeding step pitch control mechanism is on line state, the cylinder rod 51 of cylinder 50 stretches out, link assembly
10 drive inductive components 60 rise to operating position, place in the vertical height and the intracavitary conveyer belt of wrapping mold drag of the position
Height of materials it is consistent.When material encounters inductive component 60, inductive component 60 receives signal and sends transmission translator to, motor
Stopping working makes conveyer belt stop motion, and material, which is placed into die cavity, carries out bound edge.Meanwhile inductive component 60 transmits a signal to
The cylinder rod 51 of cylinder 50, cylinder 50 retracts, and link assembly 10 drives inductive component 60 to drop to off-position, under the position
Feeding step pitch control mechanism does not interfere when material transfers out die cavity, it is ensured that material smooth delivery of power goes out die cavity.In this way, passing through sense
Component 60 is answered to detect the contact height of material, and controls connecting rod component 10 and cylinder 50 work, and improve feeding step pitch control mechanism
The property easy to implement to automatically reset.
Specifically, third connecting rod 13 is connected with mounting plate 61, and inductive component 60 is installed on link assembly by mounting plate 61
10.Or fourth link 14 is connected with mounting plate 61, inductive component 60 is installed on link assembly 10 by mounting plate 61.From theory
From, inductive component 60 is not limited to above structure, also may be mounted on any connecting rod, as long as can guarantee material position
?.
In addition to above-mentioned feeding step pitch control mechanism, the present invention also provides a kind of packets including above-mentioned feeding step pitch control mechanism
Side mode.
Further, above-mentioned bound edge is touched as luggage case wrapping mold.
Refer to the prior art for other Each parts of wrapping mold, and details are not described herein.
If common four-bar mechanism is in jacking state and cylinder does not have reverse ventilation, four-bar mechanism is because of center of gravity original
Because jacking state will be kept, decline state can not be automatically reset to.The embodiment of the present invention increases ejection on the basis of original mechanism
Pin is used as automatic reset device, pushes four-bar mechanism by knock pin, can pass through knock pin under the obstructed gaseity of cylinder
So that four-bar mechanism is automatically reset, improves mechanism reliability safety, avoid causing mechanism to damage because of operation error.Moreover, this
The structure of inventive embodiments is simple, compares with common double leval jib component, merely adds reset knock pin;And reliable in action,
Link assembly jacks exhaust hood air inlet and closes, and link assembly can push link assembly automatically multiple in own wt by knock pin
Position.
It should be pointed out that the ordinal numbers such as " first, second " described in text are the different structures in order to distinguish same names,
Merely to description is convenient, certain sequence is not indicated, more should not be construed as any restriction.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.