JPH0621958B2 - Heater crimping mechanism - Google Patents

Description

TECHNICAL FIELD The present invention relates to a novel heater crimping mechanism. For more information,
For example, in a sticking device or the like for sticking by passing the sticky paper and the stuck paper to which the sticky paper is stuck between the platen and the heater that is pressure-bonded thereto at a predetermined pressure. The present invention relates to a heater crimping mechanism, and is intended to provide a new heater crimping mechanism capable of securely crimping a heater to a platen at a predetermined pressure by a simple operation with a light force. is there.

2. Description of the Related Art For example, photographic paper on which an image taken by an electronic camera is printed changes the color of the photographic paper when it is exposed to ultraviolet light, so it is necessary to form a protective film on the surface on the printed side. There is. There are several methods of forming such a protective film, but generally, a method of sticking a protective paper called a laminate film to photographic paper using a sticking device is adopted. There is.

The above-mentioned laminating film is attached, for example, as follows. The laminated film is usually
A transparent film having a heat-activatable adhesive layer attached to one surface thereof is used. Then, in a state where the photographic paper and the laminated film are superposed, the adhesive layer of the laminated film is activated by passing the platen and the heater pressed against the platen, and the transparent film is pressed against the photographic paper. As a result, the transparent film is attached to the photographic paper.

By the way, in order for the sticking by the sticking device equipped with the platen and the heater in contact with the platen to be performed more neatly, in addition to the heater being heated to a predetermined temperature, the heater is It is necessary that the platen is crimped with a predetermined pressure. That is, as described above, the laminated film is activated by the contact with the heater, and the laminated film is pressed against the photographic paper with a predetermined pressure between the heater and the platen, thereby interposing the adhesive layer. Since it is affixed to the photographic paper, if the pressure force between the heater and the platen is weak,
The adhesive action by the adhesive layer becomes insufficient.

Therefore, this kind of sticking apparatus is generally provided with a heater crimping mechanism for crimping the heater to the platen at a predetermined pressure. An elastic means is usually used to press the heater onto the platen. That is, the elastic means is associated with the heater, and the elastic force of the elastic means presses the heater against the platen.

By the way, the pressure for pressing the heater onto the platen generally requires about several tens kg.

Therefore, the elastic means must be deformed so as to generate the spring pressure of the above degree when the heater is brought into contact with the platen.
Deformation to produce kg spring pressure is by no means easy.

However, the conventional crimping mechanism has a structure in which the user is required to deform the elastic means as described above when the heater is set in a predetermined position.

SUMMARY OF THE INVENTION Accordingly, the present invention is a novel heater crimping mechanism capable of deforming the elastic means to generate a predetermined spring pressure by a simple operation with a lighter force when crimping the heater to the platen. The purpose is to provide.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a heater crimping mechanism of the present invention includes a rotating arm rotatably supported on a machine frame side, a heater that contacts a platen arranged in the machine frame, A heater holding member that holds the heater and is movably supported by the rotating arm along the rotating direction of the rotating arm, and a heater that is stretched between the heater holding member and the rotating arm The rotating arm is moved to the platen side while it is in contact with the platen, and its elastic force acts between the heater and the platen, and the toggle mechanism is equipped with the toggle mechanism to move the operation lever to the position of the toggle boundary line. By rotating the heater, the rotating arm reaches the maximum pressing position closer to the platen side than the position where the heater supported by the heater is in contact with the platen against the elastic means. Lock means for locking the heater at a lock position farther from the platen than the maximum pressing position by rotating the working lever in the same direction, and the rotation arm is locked at the lock position. By so doing, the heater is pressed against the platen by the elastic force of the elastic means.

Example Hereinafter, details of the heater pressure bonding mechanism of the present invention will be described according to an example shown in the accompanying drawings. The embodiment shown in the drawings applies the heater crimping mechanism of the present invention as a heater crimping mechanism in a sticking device.

First, the outline of the sticking apparatus 1 will be described.

In the drawing, reference numeral 2 denotes a machine frame of the sticking apparatus 1, which is formed in a substantially box shape, a photographic paper insertion port 3 is formed on the front surface thereof, and a photographic paper outlet 4 is formed on the bottom plate portion thereof. Further, an opening / closing lid 5 is provided on the top plate portion of the machine frame 2 so as to be opened rearward.

Reference numeral 6 denotes a platen rotatably arranged at a position closer to the baffle bottom plate side from the central portion in the vertical direction in the machine frame 2,
The outer peripheral portion is made of rubber having good heat resistance.

Reference numeral 7 denotes an insertion receiving plate whose front end is arranged so as to be continuous with the photographic paper insertion port 3 and whose rear end is oriented substantially toward the upper end surface of the platen 6, and above the insertion receiving plate 7. Is provided with an insertion guide plate 8. Reference numeral 9 is a driving paper feeding roller, 10 is a driven paper feeding roller which is in contact with the driving paper feeding roller, and the driving paper feeding roller 9 and the driven paper feeding roller 10 have the insertion side at the inlet side of their mutually contacting portions. It is arranged so as to be close to the rear end of the plate 7.

Although not shown, a paper feed guide plate is arranged between the drive paper feed roller 9 and the platen 6.

11 is a heater. The heater 11 is held by a heater holding member of a heater crimping mechanism which will be described later, and its heat generating portion 12 is provided so as to be capable of coming into contact with the outer peripheral surface of the platen 6 from above, and at least the sticking device 1 is used. At this time, as shown in FIGS. 1 and 5, the platen 6 is in a state of being crimped with a predetermined pressure. As shown in FIG. 2, the heater 11 has a plate shape that is long in the left-right direction, and has a heating portion 12 on the lower surface thereof.
Is provided, and the heat generating portion 12 is in contact with the platen 6 over substantially the entire length in the axial direction.

Reference numeral 13 is behind the platen 6 and is the outlet 4 for the photographic printing paper.
It is a drive paper discharge roller rotatably arranged at a position above. Reference numeral 14 denotes a driven paper discharge roller arranged so as to contact an upper part of the outer peripheral surface of the drive paper discharge roller 13, and 15 denotes a lower part of the outer peripheral surface of the drive paper discharge roller 13. It is a driven feed roller arranged at. Reference numeral 16 denotes a sheet discharge guide plate, and the sheet discharge guide plate 16 is obliquely provided in a forward descending state so that its front end is directed to the contact portion between the drive sheet discharge roller 13 and the driven delivery roller 15. In addition, the rear end portion is bent so as to be folded back substantially forward.

Reference numeral 17 denotes a laminate tape wound on a roll paper and having a predetermined shape attached to one surface of the laminate tape at regular intervals. It is supported by a supply-side roller 18 that is rotatably arranged at a position. Reference numeral 19 denotes a winding-side roller rotatably arranged at a position closer to the rear side in the upper part of the machine frame 2. Reference numerals 20, 20, and 20 denote guide rollers that regulate the traveling path of the laminating tape 17.
Then, the laminating tape 17 pulled out from the supply side roller 18 is once guided to a substantially intermediate portion between the drive paper feeding roller 9 and the platen 6, and from there, the platen 6
After being guided to the side, it is passed between the platen 6 and the heater 11. Then, after being passed between the platen 6 and the heater 11, it is guided toward the side of the drive discharge roller 13, is guided upward before reaching the drive discharge roller 13, and is wound up by the winding side roller 19. go.

The platen 6, the drive paper feed roller 9, the drive paper discharge roller 14, and the take-up side roller 19 are transmitted at a predetermined timing by transmitting the rotational force of a motor (not shown) via a reduction gear, a pulley, a belt, or the like. It can be rotated in a predetermined rotation direction.

Then, when a photographic printing paper (not shown) is inserted from the photographic printing paper insertion port 3, the leading end of the photographic printing paper is driven by the insertion receiving plate 7 and the insertion guide plate 8 to the driving paper feeding roller 9 and the driven paper feeding roller 14. Are guided to be inserted into the contacting part. Then, the drive paper feed roller 9 and the driven paper feed roller 10 are rotated, whereby the photographic printing paper is transported toward the platen 6 side, and its leading end is inserted into the portion where the platen 6 and the heater 11 come into contact with each other. Will be done. Then, the heat generating portion 12 of the heater 11 is heated, and when the heat generating portion 12 reaches a predetermined temperature, the platen 6, the drive paper discharge roller 13 and the winding side roller 19 are rotated. As a result, the photographic printing paper and the laminating film are fed while being heated and pressed between the heater 11 and the platen 6, and the laminating film is attached to the photographic printing paper. Then, while such sticking is performed, the printing paper is transferred onto the paper ejection guide plate 16 by the platen 6, the drive paper ejection roller 13 and the driven paper ejection roller 14. Then, the photographic paper automatically changes its direction of transfer on the paper discharge guide plate 16, and this time it is transferred to the photographic paper outlet 4 side by the drive paper discharge roller 13 and the driven sending roller 15, and the photographic paper is printed. It is sent out of the machine frame 2 from the paper exit.

Next, the heater crimping mechanism 21 will be described (see FIGS. 1 and 2).

Reference numerals 22 and 22 ′ are rotary arms arranged in a portion of the machine frame 2 corresponding to the lower side of the opening / closing lid 5, and one rotary arm 22 is located near the left side plate portion of the machine frame 2. And the other rotating arm 22 ′ is arranged at a position close to the right side plate portion of the machine frame 2. The rotary arms 22 and 22 'are inserted into the through holes 23 and 23' formed at the rear ends thereof, and the support pins 24 (FIGS. 3 to 3) project inward from the left and right side plate portions of the machine frame 2. (See FIG. 5) and 24 'are rotatably supported by the machine frame 2 by being inserted therethrough, whereby the position shown in FIGS. 1 and 5 and the position shown by the solid line in FIG. It is possible to rotate between.

By the way, the rotating arms 22 and 22 'are provided with operation levers, lock arms, and various pin members, which will be described later, and these members are symmetrical to the rotating arms 22 and 22'. Since it is arranged, the one provided on the left rotation arm 22 will be described in detail, and the one provided on the right rotation arm 22 ′ will be described as the one provided on the left rotation arm 22. The description will be omitted by adding the reference numeral with the reference numeral “′” to the attached reference numeral.

Reference numeral 25 denotes a support shaft that is horizontally projected from a substantially central portion in the front-rear direction toward the left side of a portion of the rotating arm 22 near the upper end edge of the left side surface thereof. It is movably supported.

Reference numeral 26 is an operation lever formed so as to be bent in a substantially angle shape when viewed from the front-rear direction. The side surface portion 26a of the operation lever 26 is formed such that the rear end thereof has a lower end edge gradually protruding downward as it goes to the rear end, and an insertion hole 27 is formed in the lower end portion. Further, the upper surface portion 26b of the operation lever 26 is formed so as to have a substantially crank shape when viewed from above. Reference numeral 28 denotes a connecting pin protruding leftward from a position near the upper edge of the rear end of the side surface portion 26a, and a lock arm described later is rotatably supported by the connecting pin 28. Reference numeral 29 denotes a protrusion formed on a portion of the right side surface of the side surface portion 26a near the lower edge (see the protrusion 29 'formed on the right operation lever 26').

The operation lever 26 is rotatably supported by the rotating arm 22 by inserting the support shaft 25 projecting from the rotating arm 22 into the insertion hole 27, and the upper surface portion 26b thereof. Is arranged so as to cover the upper edge of the rotating arm 22 from above.

30 is a torsion spring. The torsion spring 30
The outer ring-shaped portion of the intermediate portion is fitted onto the portion between the rotating arm 22 of the support shaft 25 and the operating lever 26, and one end of the annular portion is brought into contact with the projection 29 of the operating lever 26 from below. . Reference numeral 31 is a protrusion formed on the left side surface of the rotating arm 22 below the position where the support shaft 25 is provided, and at a position closer to the rear side from that position. The other end of the torsion spring 30 is in contact with the projection 31 on the rotating arm 22 side from the front side.

The operating lever 26 is normally biased by the elastic force of the torsion spring 30 so that the front end portion of the operating lever 26 is flipped upward (see FIG. 3).

32 is a lock arm. The lock arm 32 is formed in a substantially inverted J shape when viewed from the side, and an insertion hole 33 is formed in a rear end portion of an upper end portion which is bent rearward. A lock claw 34 is formed at the lower end of the lock arm 32 and is bent rearward at a substantially right angle.

The reference numeral 35 is provided on the left side surface of the rotating arm 22 below the position where the support shaft 25 for supporting the operation lever 26 is provided, and is provided at a position slightly forward from the position. It is a stopper pin.

Thus, the lock arm 32 has its rear side edge portion (hereinafter referred to as “bending edge”) 36 of the upper bent portion positioned substantially in front of the support shaft 25, and its insertion hole 33.
A connecting pin 28 projecting from the operation lever 26 is inserted into the operation lever 26, whereby the operation lever 26 is rotatably connected.

In the process of the operation lever 26 changing from the state shown in FIG. 1 to the state shown in FIG. 3, the connecting pin 28 provided on the operation lever 26 is rotated counterclockwise, so that the lock arm 32 is rotated. The upper end supported by the connecting pin 28 is moved counterclockwise. Then, when the connecting pin 28 comes to the upper left of the support shaft 25, the bent edge 36 of the lock arm 32 comes into contact with the support shaft 25. Then, from this state, the operation lever 26 is further rotated, and the lock arm 32 is moved to the bent edge 36 and the support shaft 2.
5 is rotated in the counterclockwise direction with the portion in contact with 5 as the rotation fulcrum. Then, when the lock arm 32 is rotated in the counterclockwise direction, the lower end portion of the front end edge thereof abuts the stopper pin 35 from the rear (state shown in FIG. 3). In this state, the lock arm 32 can no longer rotate counterclockwise,
The operation lever 26 is also prevented from rotating at this position (hereinafter, referred to as “bounce position”). It should be noted that such an operation is realized by the torsion spring 30 when the lock arm 32 is not in the lock state described later.

Also, from the state shown by the chain double-dashed line in FIG.
When 6 is rotated in the clockwise direction, the connecting pin 28 is moved forward, so that the lock arm 32 moves the lock claw 34 backward by its own weight. Then, when the connecting pin 28 reaches a position slightly rearward of the support shaft 25, the lock arm 32 is in a state in which the lock claw 34 thereof is positioned substantially directly below the support shaft 25, as shown in FIG. Hereinafter, this position will be referred to as an "engagement position".

Reference numeral 37 denotes a lock pin that projects substantially horizontally from the left side plate portion of the machine frame 2 toward the right side. The tip end portion of the lock pin 37 has its lock claw when the lock arm 32 reaches the engagement position. 34 is located at a position below.

Then, when the lock arm 32 reaches the engagement position, the lock claw 34 engages with the lock pin 37 from below.

Reference numeral 38 denotes a spring engaging pin which is provided so as to project rightward from a position closer to the lower edge of the right side surface of the rotating arm 22. Further, 39 is a support pin projecting rightward from a position near the corner where the upper edge and the front edge intersect on the right side surface of the rotating arm 22. A long hole 40 that is long in the up-down direction is formed at a position closer to the rear than the position where the support pin 39 is provided so as to project to some extent in the portion near the upper edge of the rotating arm 22.

Reference numeral 41 is a heater holding member that holds the heater 11 described above. The heater holding member 41 is formed in a substantially shape when viewed from the front-rear direction, and the heater 11 is integrally attached to the lower surface of an intermediate portion 42 extending in the horizontal direction via a mounting member 43. Reference numerals 44 and 44 ′ are support pieces formed in a rising shape from the left and right ends of the intermediate portion 42 of the heater holding member 41. The support pieces 44, 44 'are formed in a substantially inverted L shape when viewed from the side, and the insertion holes 45, 45' are formed at the front ends of the portions extending in the front-rear direction and the portions extending in the up-down direction. Among them, the rotating arms 22 and 22 ', respectively.
Brackets 46 and 46 ', which are formed substantially in a side view, are fixed to the upper end of the side surface on the side. The adjustment springs 47, 47 'are attached to the upper ends of the brackets 46, 46'.
, And spring engaging members 48, 48 'are screwed to the lower ends of the adjusting springs 47, 47'. The spring fasteners 48, 48 'are formed in a substantially rectangular parallelepiped shape and are arranged so as to be sandwiched between the front and rear sides of the brackets 46, 46', and the hook portions 49, 49 'are provided from the lower surface thereof. It is integrally projecting downward.

Reference numerals 50 and 50 ′ are support pieces 44 and 4 of the heater holding member 41.
4'is an engaging pin that projects in a substantially horizontal direction from a substantially central portion in a front-rear direction of side surfaces facing the rotating arms 22 and 22 'of a portion extending in the front-rear direction.

Therefore, the heater holding member 41 has the support pins 39, 3 protruding from the rotating arms 22, 22 'in the insertion holes 45, 45' formed in the left and right support pieces 44, 44 '.
By inserting 9 ', the rotating arms 22, 22'
Is rotatably supported by the engaging pins 50, 5
The tip portion of 0'is slidably engaged with the elongated holes 40, 40 'formed in the rotating arms 22, 22'. Thus, the heater holding member 41 has the support pieces 44, 4
The front end of the portion of the 4'extending in the front-rear direction is rotatably supported by the rotating arms 22, 22 ', so that the rotating arms 22, 22' are substantially rotated. ′
It is in a state in which it can move along the direction of rotation. The heater holding member 41 has the engagement pin 5
0 and 50 'are the long holes 40 and 4 of the rotating arms 22 and 22'.
By engaging with the lower edge of 0 ', the rotating arm 2
2, 22 'are prevented from falling below a predetermined position (see FIG. 3).

Reference numerals 51 and 51 'are tension springs for crimping the heater. As the tension springs 51 and 51', those which generate relatively strong tension are used. The upper ends of the tension springs 51 and 51 'are attached to the hook portions 49 and 49' of the spring attachments 48 and 48 'provided on the support pieces 44 and 44' of the heater holding member 41, respectively. The lower end portion thereof is engaged with the spring engagement pins 38, 38 'protruding from the rotating arms 22, 22'.

The tension springs 51 and 51 'are designed to generate a predetermined tension force by moving the rotating arms 22 and 22' toward the platen 6 while the heater 11 is in contact with the platen 6. The pulling force acts on the heater 11 as a force for pressing the heater 11 against the platen 6. Therefore, the tension springs 51, 5
1'is the heater holding member 41 and the rotating arm 2
When it is stretched between 2 and 22 ', it does not necessarily have to be stretched so as to generate a tensile force, and it is stretched while maintaining its original shape or slightly stretched. Just go. When the heater 11 cannot be pressed against the platen 6 with a predetermined pressure in such a stretched state, the adjustment springs 47, 4
7 ′ by turning it in a predetermined direction, the spring fasteners 48, 4
It suffices to slightly move 8'upward so that the tension springs 51, 51 'are in a state in which a certain amount of tension force is generated in advance.

Reference numerals 52 and 52 'are engaged with grooves of the support pins 39 and 39', which protrude from the insertion holes 45 and 45 'formed in the support pieces 44 and 44' of the heater holding member 41.
This is a ring, which prevents the heater holding member 41 from coming off the support pins 39, 39 '. Although not shown in the drawings, a retaining member such as an E ring is also attached to the tips of the support shafts 25 and 25 'and the connecting pins 28 and 28', and these retaining members are used for operation. The levers 26, 26 'and the lock arms 32, 32' are prevented from coming off from the pin members that support them.

Then, the pressure bonding of the heater 11 to the platen 6 by the heater pressure bonding mechanism 21 configured as described above is
This is carried out as follows (see FIGS. 3 to 5).
In FIGS. 3 to 5, only the left side of the rotating arm and the operating levers, lock arms, etc. provided on the rotating arm are shown, but the right side is operated similarly to the left side. It

In the state shown by the solid line in FIG. 3, the opening / closing lid 5 is opened,
Moreover, the rotating arms 22 and 22 'are in a state of being moved so as to project upward from the opening 53 formed in the top surface portion of the machine frame 2. Such a state is a state, for example, when the above-mentioned laminating tape 17 is replaced, or when the inside is inspected or held.

Then, replacement of the laminating tape 17 and necessary inspection,
When the maintenance work is completed, the rotating arms 22 and 22 'are rotated so as to be returned into the machine frame 2. As a result, the heater 11 comes into contact with the platen 6 from above as shown by the chain double-dashed line in FIG. Then, in this state, the operation levers 26 and 26 'are operated by the torsion spring 3
The elastic arms of 0 and 30 'have reached the jumping position, so that the lock arms 32 and 32' are in contact with the stopper pins 35 and 35 'from the rear.

Then, from the state shown by the chain double-dashed line in FIG. 3, the operating levers 26, 26 'are rotated in the clockwise direction in FIG. 3 against the elastic force of the torsion springs 30, 30'. Then, as described above, since the connecting pins 28, 28 'are moved forward, the lock arms 32, 32' are
Due to its own weight, the lock claws 34, 34 'are moved rearward. Then, when the lock arms 32, 32 'come to the above-mentioned engagement position, as shown in FIG. 4, the lock claws 34, 34' are positioned so as to enter below the lock pins 37, 37 '. become. That is, the lock claws 34 and 34 'of the lock arms 32 and 32' are locked by the lock pin 3
7, 37 '.

In this state, the lock arms 32 and 32 'are not yet engaged with the lock pins 37 and 37' so as to be locked. Because, in this state, the operation levers 26, 2
When the hand is released from 6 ', the operating levers 26, 26' return to the jumping position again by the elastic force of the torsion springs 30, 30 '. Therefore, the lock arms 32, 3
2'is rotated counterclockwise around the portion where the bent edges 36, 36 'and the support shafts 25, 25' contact each other, so that the lock claws 34, 34 'are locked.
This is because they are moved forward while slipping under the 7, 37 '.

Then, from the state shown in FIG.
When 6'is further rotated in the clockwise direction, the connecting pins 28, 28 'provided on the 6'will support the support shafts 25, 2'.
Straight lines (hereinafter, referred to as "toggle boundary lines") 54, 5 connecting the axis of 5'and the axes of the lock pins 37, 37 '.
As it comes to the front of 4 '(the state shown in FIG. 5), the connecting pins 28, 28' are moved slightly above the position shown in FIG. That is, the connecting pins 28 and 28 'are shown in FIG. 4 from the positions shown in FIG. 4, that is, the positions where the lock claws 34 and 34' of the lock arms 32 and 32 'engage the lock pins 37 and 37'. Will be moved in the direction indicated by.

However, in order to move the connecting pins 28, 28 'upward, the lock arms 32, 32' connected to the connecting pins 28, 28 'also need to be moved upward. However, in this state, the lock arms 32, 32 'have their lock claws 34, 3'.
Since 4'is engaged with the lock pins 37, 37 ', it cannot move upward.

Since the lock arms 32, 32 'cannot move upward, the pivot arms 22, 22' supported by the lock arms 32, 32 'are moved downward. That is, the rotating arms 22 and 22 'are below the position shown by the chain double-dashed line in FIG. 3 and the position shown in FIG. 4, that is, below the position where the heater 11 is in contact with the platen 6 by the stroke L. Is displaced to.

As a result, the tension springs 51, 51 'are extended by a predetermined amount so as to generate a predetermined spring pressure. That is,
The tension springs 51 and 51 ′ are heater holding members 41.
While the position of the part engaged with the side is unchanged, the part engaged with the rotating arms 22, 22 '(the part engaged with the spring engaging pins 38, 38') is displaced downward. It will be extended.

Then, a tensile force of a predetermined value is generated in the tension springs 51 and 51 ', and this tension force is applied to the heater holding member 41.
The heater 11 acts as a force for pressing the heater 11 against the platen 6 via the.

When a tensile force is generated in the tension springs 51, 51 'as described above, a strong turning force for returning to the upper direction is applied to the rotating arms 22, 22' due to the stress, This turning power is the support shaft 25,2
5 ', operating levers 26, 26' and connecting pins 28, 2
The lock arms 32, 32 'extend through 8'. Therefore, the lock claws 34, 34 'of the lock arms 32, 32' are
Comes into pressure contact with the lock pins 37, 37 'from below.

Then, in such a state, the operation levers 26, 2
Unless 6'is rotated counterclockwise, the engagement of the lock claws 34, 34 'of the lock arms 32, 32' with the lock pins 37, 37 'will not be released. That is, in this state, as described above, since the connecting pins 28, 28 'come forward from the toggle boundary line 54, the operating levers 26, 26' are pulled downward by the lock arms 32, 32 '. This is because the connecting pin 28, 28 'provided in this way urges a strong turning force to rotate in the clockwise direction.

As a result, the heater 11 is pressure-bonded to the platen 6 with a predetermined pressure, and the state is surely maintained.

In this embodiment, two tension springs for pressing the heater 11 to the platen are used. Therefore, for example, when 20 kg of pressure is required for the pressure, the tension springs 51, 51 'are It is sufficient to set the tensile force during extension to 10 kg each.

From the state shown in FIG. 5, the operation levers 26, 26 'are
Is rotated counterclockwise, for example, by lifting the front ends of the upper surface portions 26b, 26'b, the connecting pins 28, 28 'are moved rearward from the toggle boundary line 54, and Since it is moved downward, the rotating arms 22, 22 'are displaced upward, and the operating levers 26, 26' are rotated by the elastic force of the torsion springs 30, 30 'to the jumped-up position. The engagement of the lock claws 34, 34 'of the lock arms 32, 32' with the lock pins 37, 37 'is released.

Although not shown, the machine frame 2 is provided with a safety switch whose contacts are closed when the opening / closing lid 5 comes to a position where the opening 53 is completely closed.
The control circuit is configured so that power cannot be turned on unless the contact of the safety switch is closed.

However, as described above, the rotating arms 22 and 22 'are arranged at the positions corresponding to the lower side of the opening / closing lid 5, whereby the operation levers 26, 26' are also arranged below the opening / closing lid 5. . Therefore, the open / close lid 5 cannot be moved to the position where the opening 53 is closed when the operating levers 26 and 26 'are in the flip-up position. The operating levers 26, 26 'are moved to the positions shown in FIG. 5, that is, the connecting pins 28, 28' cross the toggle boundary line 54 forward, and the heater 11 is pressed against the platen 6 with a predetermined pressure, and ,
That state is the lock arms 32, 32 'and the lock pin 3.
The spring force of the torsion springs 30, 30 ', unless they come to the position in which they are to be retained by 7, 37', i.e. with the connecting pins 28, 28 'behind the toggle boundary line 54. The tip of the tip is lifted up by.

Therefore, when the contact of the safety switch is closed,
This is always when the heater 11 is pressed against the platen 6 with a predetermined pressure.

Therefore, the power is not turned on while the heater 11 is not crimped to the platen 6 with a predetermined pressure. That is, when the heater 11 is not pressure-bonded to the platen 6 with a predetermined pressure, the attachment cannot be performed.

However, according to the sticking apparatus 1 including such a heater crimping mechanism 21, the sticking can be performed under the condition that the heater 11 is always crimped to the platen 6 at a predetermined pressure. The laminated film can be attached to photographic paper neatly.

EFFECTS OF THE INVENTION As is clear from the above description, the heater crimping mechanism of the present invention includes a rotating arm rotatably supported on the machine frame side, and a heater for contacting a platen arranged in the machine frame. A heater holding member which holds the heater and is supported by the rotating arm so as to be movable along the rotation direction of the substantially rotating arm; and a heater holding member which is stretched between the heater holding member and the rotating arm. When the rotating arm is moved to the platen side while the heater is in contact with the platen, its elastic force acts between the heater and the platen, and the toggle mechanism is equipped with a toggle mechanism to move the operation lever to the toggle boundary line. By rotating to a position, the heater supported by the rotating arm reaches a maximum pressing position closer to the platen side than the position where the heater contacts the platen against the elastic means, The heater further comprises a lock means capable of locking the heater at a lock position farther from the platen than the maximum pressing position by rotating the operation lever in the same direction, and the rotation arm is at the lock position. It is characterized in that the heater is pressed against the platen by the elastic force of the elastic means by being locked.

Therefore, according to the heater crimping mechanism of the present invention, the heater can be crimped to the platen with a predetermined pressure only by locking the rotating arm to the predetermined lock position by the locking means. Therefore, the heater can be pressed onto the platen by a very simple operation with a lighter force.

In addition, since the heater crimping mechanism of the present invention uses the toggle mechanism, it is only necessary to unlock the lock state by rotating the operation lever in the opposite direction. Therefore, when trying to release the locked state, the force applied from the outside is never transmitted from the heater to the platen, which may cause damage to the platen by excessively crimping the heater to the platen. There is no such thing.

In the embodiment described above, the operation lever operated when locking the rotating arm to the lock position is flipped up to the opening / closing lid side of the machine frame when the rotating arm is not locked, In that state, it was impossible to close the opening / closing lid, so that the contact of the safety switch was not closed.By doing this, the heater will not turn on when the platen is not crimped. can do. Therefore, it is possible to reliably prevent the situation where the device is driven while the heater is not pressure-bonded to the platen.

In the embodiment described above, a pair of rotating arms and locking means for locking the rotating arms at a predetermined position are provided on the left and right sides of the machine frame, but depending on the shape of the heater, it may be provided on either side. It may be sufficient.

And, in the above-mentioned embodiment, the heater crimping mechanism of the present invention is applied as the heater crimping mechanism in the sticking device, but the present invention is the heater crimping in various devices which requires the heater to be crimped to the platen at a predetermined pressure. It can be applied as a mechanism.

[Brief description of drawings]

The drawings show an example of an embodiment in which the heater crimping mechanism of the present invention is applied as a heater crimping mechanism in a sticking apparatus. FIG. 1 is a vertical cross-sectional side view showing the main part of the sticking apparatus, and FIG. 2 is a heater crimping mechanism. FIG. 3 to FIG. 5 are side views of essential parts showing the operation of crimping the heater to the platen by the heater crimping mechanism in order from FIG. 3 to FIG. Explanation of reference numerals 2 ... Machine frame, 6 ... Platen, 11 ... Heater, 21 ... Heater crimping mechanism, 22, 22 '... Rotating arm, 26, 26' ... Operating lever (locking means), 32 Three
2 ', 37, 37' ... Locking means, 41 ... Heater holding member, 51, 51 '... Repulsion means

Claims (1)

[Claims] 1. A rotating arm rotatably supported on the machine frame side, a heater contacting a platen disposed in the machine frame, a heater which holds the heater and is substantially rotatable on the rotating arm. A heater holding member that is movably supported in the turning direction, and the turning arm moves to the platen side while being stretched between the heater holding member and the turning arm and the heater is in contact with the platen. The rotating arm is supported by rotating the operating lever to the position of the toggle boundary line, which is provided with an elastic means for exerting its elastic force between the heater and the platen and a toggle mechanism. The heater reaches the maximum pressing position closer to the platen side than the position where the heater contacts the platen against the elastic means, and the heater is rotated in the same direction to move the heater forward. Lock means capable of locking at a lock position farther from the platen than the maximum pressing position, and the rotating arm being locked at the lock position causes the elastic force of the elastic means to generate the elastic force. A heater crimping mechanism characterized in that the heater is pressed against the platen.