JP3547315B2 - Heat sealing type packaging machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat-sealing type packaging machine in which a sheet material is placed on an upper surface of a tray containing prepared foods and the like, and the sheet material is heated to seal an opening on the upper surface of the tray.
[0002]
[Prior art]
In the case of foods mass-produced in factories, such as tofu, the trays are placed in a distribution process with the upper surface of the tray sealed with a transparent sheet, and displayed in this state.
On the other hand, when packaging prepared foods at supermarkets and retail stores, and when bringing home the foods that consumers have selected in their own containers, small-scale production is required. Is difficult to package using. For this reason, conventionally, products such as prepared foods are put in a tray, and the entire tray is wrapped with a transparent wrapping film.
[0003]
[Problems to be solved by the invention]
However, if the entire tray is wrapped with the packaging film, the appearance is not preferable. Further, the conventional heat seal type packaging machine is large and cannot be installed without a large space.
[0004]
In addition, small heat-sealing packaging machines have been developed, but there are actually many types of trays with different sizes and shapes, so it is necessary to prepare attachments for each type of tray. Also, the replacement work was troublesome because this attachment was heavy. Furthermore, when the sheet material placed on the tray is heat-sealed using a small heat-sealing type packaging machine, the sealed sheet material is in a relaxed state, and the appearance is not good.
[0005]
SUMMARY OF THE INVENTION The present invention has been developed in view of the above circumstances, and an object of the present invention is to provide a heat-sealing type packaging machine which can easily cope with trays having different sizes and shapes and which can cleanly seal sheet materials. It is what we are going to offer.
[0006]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above object, and according to claim 1, a moving table movable between a loading / unloading stage and a heat sealing stage set on a main body,
A tray holder that is detachably attached to the moving table and has a tray holding unit that holds a tray;
Heating is provided above the heat seal stage so as to be able to move up and down, and in a state where the sheet material is lowered, abuts against a sheet material placed on the tray of the tray holding unit and heat seals the sheet material to the opening edge of the tray. And a member,
A lift member that moves up and down by an operation force of an operation handle provided on the moving table is provided below the tray holding unit,
Heating characterized in that the lifting member is locked to the locking portion on the main body side in a state where the lift member is raised in the loading / unloading stage, and a lock portion which is released from the locking portion when the lifting member is lowered is provided on the moving table side. It is a sealing type packaging machine.
[0007]
According to claim 2, the above A plurality of pin holes are formed on the upper surface of the tray holder located outside the tray holding portion along the shape of the opening edge of the tray, and pin materials are provided in each pin hole so as to be able to move up and down. Is provided for each pin material so as to protrude from the pin hole so that each pin material can be independently raised and lowered. Claim 1 It is a heat sealing type packaging machine.
[0008]
According to the third aspect of the present invention, the tray holding portion is constituted by an opening corresponding to the shape of the tray, and a convex portion protruding toward the inside of the opening is formed on an inner peripheral edge of the opening, and the tray holding portion is formed. The convex portion presses the side surface of the tray from the outside to the inside in a state where the tray is fitted in the portion, thereby bending the opening edge of the tray inward, and in this curved state, the sheet material is placed on the opening edge of the tray. The heat-sealing type packaging machine according to claim 1 or 2, wherein the sheet material is placed and heat-sealed, and tension is applied to the sheet material by a shape restoring force of the tray taken out from the opening.
[0009]
The device according to claim 4, wherein the heating member is configured by fixing a heater to a heating plate large enough to cover the tray holding portion. Is a heat seal type packaging machine.
[0010]
According to a fifth aspect of the present invention, there is provided a heat sealing type packaging machine according to the fourth aspect, wherein the heating plate is swingable.
[0011]
The package according to any one of claims 1 to 5, wherein the tray holder is replaceable with a tray holder adapted to trays having different shapes and sizes. Machine.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of the heat-sealing type packaging machine 1, FIG. 2 is a right side view in a state where the moving table 2 is pulled out to a loading / unloading stage A, and FIG.
[0013]
The heat-sealing type packaging machine 1 has a moving table 2 that can move between a loading / unloading stage A set on the front side of the main body and a heat sealing stage B set behind the main body, and can be attached to and detached from the moving table 2. A tray holder 5 having a tray holding portion 4 attached to hold the tray 3 in a state, and provided so as to be able to ascend and descend above the heat seal stage B, and held by the tray holding portion 4 in a lowered state. And a heating member 9 which abuts against the sheet material 6 placed on the tray 3 and heat seals the sheet material 6 to the opening edge 7 of the tray 3.
[0014]
The main body includes a slide housing 10 in which an area on the upper surface is set as a loading / unloading stage A, and an area set as a heat seal stage B in the back, and a heat housing 11 in which a mechanism such as a heating member 9 is provided above the inside. They are roughly divided into
As shown in FIG. 5, the slide housing 10 is a shallow box-shaped body with an open front surface and an open top surface, and a support rail 12 made of a synthetic resin is provided inside the left and right side walls with a stop having a substantially Z-shaped cross section. It is fastened by the metal fitting 13 and a similar member is attached to the inner surface. When these support rails 12 are attached, the moving table 2 is supported on the upper surfaces of the left and right support rails 12, and the left and right sides are guided by the upper edges of the left and right side surfaces projecting upward from the upper surfaces of the support rails 12. The table 2 can be moved back and forth. In addition, a lock hole 14 that constitutes a part of a lock mechanism described later is formed as a locking portion at a front end portion of the bottom of the slide housing 10.
On the other hand, the heat housing 11 is a box-shaped body including a front wall portion 15 from which a lower end portion is removed, left and right side wall portions 16, a back surface portion 17, and a ceiling surface portion 18, and a power switch is provided on the front wall portion 15. A pair of front and rear rollers 20 for mounting a sheet material roll 19 on which a sheet material connected in series is wound are provided on a ceiling surface portion 18. In addition, a heat radiating hole 21 is provided in the rear portion 17.
[0015]
As shown in FIG. 6A, the moving table 2 includes a rectangular table frame 22 having a large opening into which the tray holder 5 fits, a front plate 23 attached to the front side of the table frame 22, and It consists of. A step portion 24 for supporting the tray holder 5 is formed on the inner peripheral edge of the opening of the table frame 22.
On the other hand, an operation handle 25 is rotatably provided substantially at the center on the front side of the front plate 23, and a mechanism serving as a tray lift mechanism for pushing up the tray 3 and a lock mechanism for locking the moving table 2 by operating the operation handle 25 is provided on the back side. Is provided.
[0016]
As shown in FIGS. 6 (a) and 6 (b), the mechanism that also serves as the tray lift mechanism and the lock mechanism allows a drive shaft 27 having an eccentric pin 26 at the rear end to penetrate from the back side of the front plate 23 to the front side. The operation handle 25 is attached to the front end protruding to the front side, one end of a first link piece 30 extending in the lateral direction is connected to the eccentric pin 26, and the second link piece is connected to the other end of the first link piece 30. Three pieces are pivotally mounted with one end of the third link piece 31 and one end of the third link piece 32 overlapped with each other. Then, the other end of the second link piece 31 extending obliquely downward from the shaft attachment portion is pivotally attached to the back surface of the front plate 23 by a shaft 33 in a rotatable state. The other end of the third link piece 32 extending obliquely upward from the shaft attachment portion is connected to one of the upright walls of the substantially concave bracket 34 via a shaft 35, and this bracket 34 is attached to the front plate 23. A tray pull member is fixed to the other upright wall of the bracket 34 by restricting the left and right sides of the bracket 34 on the back surface by a guide pulley 36 so as to be movable up and down. To face from below.
[0017]
Therefore, when the operation handle 25 is rotated in the direction indicated by the arrow in FIG. 6B, the eccentric pin 26 moves the first link piece 30 to the right in the figure, whereby the second link piece 31 and the third link piece 31 are moved. The cross angle θ with the link piece 32 increases, and the upper end of the third link piece 32 rises. For this reason, the bracket 34 and the lift unit 37 are raised, and the bottom of the tray 3 set in the tray holding unit 4 can be pushed up. On the other hand, when the operation handle 25 is rotated in the opposite direction, the first link piece 30 moves to the left in the drawing, so that the intersection angle θ between the second link piece 31 and the third link piece 32 decreases, and the third link piece The upper end of 32 descends. For this reason, the bracket 34 and the lift part 37 descend and return to the original position.
[0018]
Further, the second link piece 31 in the present embodiment is provided with a protruding lock portion 40 by extending further forward than the shaft attachment portion with the front plate 23. The lock portion 40 constitutes a part of a lock mechanism together with the lock hole 14 opened as a lock portion on the bottom of the slide housing 10.
[0019]
When the operation handle 25 is rotated to lift the tray 3, the second link piece 31 rotates in the direction in which the lock portion 40 is lowered, and when the tray 3 is sufficiently lifted, the lock portion 40 is It engages with the lock hole 14. Therefore, when the movable table 2 is stopped on the loading / unloading stage A and the tray 3 is pushed up by the tray lift mechanism, the movable table 2 is locked by the lock mechanism that operates in conjunction with the tray lift mechanism.
[0020]
On the other hand, when the operation handle 25 is turned to the opposite side and the lift portion 37 is lowered, the second link piece 31 is turned in the direction in which the lock portion 40 is raised, so that the lock portion 40 comes off from the lock hole 14. The lock is released.
[0021]
The tray holder 5 shown in FIG. 7A is a plate made of aluminum formed to have a size just fitted into the opening of the moving table 2. In the present embodiment, the tray holder 5 is configured so that two trays 3 can be loaded at the same time. Two through openings having a size and a shape corresponding to the shape of the tray 3 are provided on the left and right sides as a tray holding portion 4. In the present embodiment, the through-opening of the tray holding portion 4 is formed with a convex portion 41 slightly projecting toward the inside of the opening at substantially the center of the inner peripheral edge of the opening.
[0022]
Here, the tray 3 will be described. The tray 3 is a member formed into a dish shape or a box shape having an open upper surface by, for example, press forming a paper material. The opening edge 7 of the upper surface opening is shaped into a flange shape toward the outside. In any of the shapes, the side wall surface between the opening edge 7 and the bottom surface is provided with a reverse taper (an inclined surface on which the opening edge 7 side falls more outward than the bottom side). Therefore, when the tray 3 is fitted into the through-opening-shaped tray holding portion 4, if the size and the shape are appropriate, the side wall surface of the tray 3 is supported against the inner peripheral edge of the opening of the tray holding portion 4, and the inside of the opening is also supported. Since the convex portion 41 is formed on the peripheral edge, the side wall surface of the tray 3 is slightly pressed inward by the convex portion 41, whereby the opening edge 7 is curved inward, and thus the area of the upper surface opening is slightly reduced. . In this loaded state, the upper opening edge 7 of the tray 3 rests on the upper surface of the tray holder 5.
[0023]
Therefore, a groove 42 is formed so as to surround the portion where the opening edge 7 is placed, that is, the opening edge of each tray holding portion 4, and a cushion member 43 made of an elastic wire material such as rubber is fitted into the groove 42. The tray 3 is projected slightly upward from the upper surface, and the projecting portion receives the opening edge 7 of the tray 3.
[0024]
In addition, a plurality of pin holes 44 are formed outside the cushion member 43 along the shape of the opening edge, and the lower surface of the tray holder 5 surrounds each pin hole 44 as shown in FIG. Then, a pin case 45 having a bottomed cylindrical shape is attached, a pin member 46 is provided in each pin hole 44 so as to be able to move up and down, and a coil spring for urging the upper end portion of the pin member 46 so as to protrude from the pin hole 44. 47 is provided as a biasing member in a state wound around each pin member 46 in the pin case 45 so that each pin member 46 can be raised and lowered independently.
[0025]
Since the pin material 46 functions as a positioning pin that facilitates appropriately maintaining the position of the sheet material 6 placed on the opening edge 7 of the tray 3, the tray 3 is loaded (set) in the tray holding unit 4. Thus, the outer peripheral surface of the pin member 46 is located slightly outside the outer peripheral edge of the opening edge portion 7 of the tray 3, and projects slightly above the height of the state where the sheet material 6 is placed on the tray 3. Set the protruding length to. In the present embodiment, the two trays 3 are loaded on the left and right sides, and the sheet members 6 are separately placed on both trays 3. Therefore, the pin members 46 disposed therebetween also serve to position both the left and right sheet members 6. .
[0026]
Next, a heating mechanism such as the heating member 9 will be described.
As shown in FIG. 8, the heating member 9 forms a heating plate 50 by stacking two aluminum plates large enough to cover the two right and left tray holding portions 4. A disk-shaped heater 51 is placed on the upper surface of the plate 50a and pressed and fixed by a stay 52 from above. Then, in order to support the heating member 9 in a vertically movable state, bolts 53 are erected from the left and right upper surfaces of the heater 51 and are connected to the lifting mechanism by the bolts 53. The lower surface of the heating plate 50 is processed with a fluororesin.
[0027]
As shown in FIG. 9, a lifting mechanism that supports the heating member 9 in a vertically movable state is provided with guide columns 60 vertically mounted on the left and right inside the heat housing 11 and moves up and down while being guided by the guide columns 60. A U-shaped elevating member 61, a coil spring 62 as an urging member for urging the elevating member 61 upward, and a left and right upright portion fixed to the left and right elevating members 61 to be integrated with the elevating member 61. A vertically moving elevating and lowering member 63, a roller 65 provided at an upper end of a roller support 64 erected substantially at the center of the elevating and lowering member 63, and a state supported by bearings provided on left and right side walls of the heat housing 11. And a handle 67 attached to the end of the rotating shaft 66 protruding from the side surface of the heat housing 11, and provided at substantially the center of the rotating shaft 66 to contact the roller 65. Like the cam 68 in contact It is configured. Then, the upper end portion of the upright bolt 53 is passed from the heating plate 50 through the elevating horizontal member 63 of the elevating mechanism from below, and the coil spring 69 is wound around the portion protruding above the elevating horizontal member 63 and the bolt 53 The nut 70 is double screwed to the upper end of the nut.
[0028]
Therefore, the heating plate 50 always maintains a state of being raised by the elastic force of the left and right coil springs 62. When the handle 67 is turned obliquely forward from above indicated by a solid line in FIG. 2 as indicated by a two-dot chain line, a cam 68 is rotated via a rotation shaft 66 and the outer peripheral edge gradually separated from the center is a roller 65. Is pressed, the lifting / lowering horizontal member 63 can be lowered, whereby the heating plate 50 also moves down. When the heating plate 50 is lowered, the lower surface of the heating plate 50 first comes into contact with the upper end of the pin material 46. In this state, when the heating plate 50 is further lowered, the pin material 46 is pressed by the heating plate 50 and the heating plate 50 is lowered. It descends with. Therefore, even if the pin member 46 projects, there is no problem in lowering the heating plate 50. When the heating plate 50 is sufficiently lowered, it comes into contact with the sheet material 6 on the tray 3 stopped at the heat sealing stage B. The heating plate 50 is resiliently attached to the lifting and lowering member 63 so as to be vertically movable, and is suspended by two left and right bolts 53. Swingable. Therefore, even if the tray 3 is slightly inclined, the lower surface of the lowered heating plate 50 is securely brought into contact with the entire periphery of the opening edge 7 of the tray 3, whereby the sheet material 6 is moved to the opening edge of the tray 3. 7 can be reliably heated and bonded over the entire circumference.
[0029]
Next, a procedure for using the heat-sealing packaging machine 1 having the above-described configuration will be described. Prior to the start of use, the power switch is turned on, and the temperature setting operation unit is operated to heat the heating plate 50 to an appropriate temperature.
[0030]
First, the moving table 2 is pulled out to the loading / unloading stage A on the near side. In this state, the tray 3 containing the contents such as prepared foods is loaded into the tray holding portion 4 of the tray holder 5, and the sheet material 6 is placed on the tray 3. Since the upper end of the pin member 46 projects from the upper surface of the tray holder 5 when the sheet member 6 is placed, if the sheet member 6 is put in a region surrounded by the pin member 46, it can be easily placed at a predetermined position. Can be. Further, when the tray 3 is loaded into the tray holding portion 4, the area of the upper surface opening of the loaded tray 3 is slightly reduced because the convex portion 41 is formed on the inner peripheral edge of the opening of the tray holding portion 4.
[0031]
Next, the moving table 2 is pushed into the heat housing 11 to move to the heat seal stage B, and in this state, the handle 67 is tilted forward. When the handle 67 is tilted, as described above, the heating member 9 descends, and the lower surface of the heating plate 50 abuts on the sheet material 6. When this abutting state is appropriately maintained, the heat of the heating plate 50 is applied to the sheet material 6. Then, the adhesive previously applied to the lower surface of the sheet material 6 is softened, and the sheet material 6 is bonded to the opening edge 7 of the tray 3, whereby the opening of the tray 3 is sealed with the sheet material 6. Stop).
[0032]
The adhesive may be a general heat-melt type applied to the back surface of the sheet material 6 or applied to the opening edge 7 of the tray 3. Also, if the sheet material 6 or the opening edge 7 of the tray 3 is made of a material that can be appropriately melted without using an adhesive, the heating of the heating plate 50 causes the sheet material 6 and the opening edge 7 of the tray 3 to be in contact with each other. Can be fused.
[0033]
When the sealing is completed in this manner, the handle 67 is returned to raise the heating member 9 to the original position. In this embodiment, the heating member 9 is urged upward by the coil spring 62, so that the heating member 9 automatically returns to the initial state only by releasing the handle 67 lightly. When the heating plate 50 rises, the pin member 46 rises to its original height with the rising of the heating plate 50 due to the urging force of the coil spring 47. In addition, since the pin member 46 in the present invention moves up and down independently, troubles such as being caught halfway and not returning to the original height do not occur.
[0034]
After the handle 67 is returned, the moving table 2 is pulled toward the user and moved to the loading / unloading stage A. Then, when the operation handle 25 is rotated, as described above, the lift portion 37 rises and comes into contact with the bottom of the tray 3, and when the operation handle 25 is further rotated, the lift portion 37 pushes up the tray 3. Therefore, the operator can easily take out the lifted tray 3.
[0035]
In this manner, when the tray 3 fitted in the tray holding portion 4 is taken out, the opening edge 7 reduced by the shape restoring force of the tray 3 tends to return to the original size. A tension acts on the sheet material 6 by the force. Therefore, the sheet material 6 is in a taut state.
[0036]
When the next tray 3 is sealed after the first seal packaging operation is completed, a new tray 3 is loaded into the empty tray holding unit 4 and the sheet material 6 is placed on the tray 3. At this time, if the lift portion 37 is kept raised, the height of the tray 3 when the tray 3 is loaded is noticed. In other words, the tray 3 is lifted and is in an unnatural state. However, even if the user does not notice it due to carelessness or the like, if the lift portion 37 is raised, the movement table 2 is locked by the action of the lock mechanism and cannot move as described above. Therefore, it is possible to prevent the tray 3 from being pushed down while the tray 3 is lifted up, causing the tray 3 to be damaged by hitting the front wall portion 15 or the contents to be spilled and soiling the surroundings. .
[0037]
When performing the seal packaging of the trays 3 having different shapes and sizes, the tray holder 5 is removed and replaced with a tray holder 5 having a tray holding portion 4 which is newly adapted to the tray 3 for performing the seal packaging. Do it. In this case, the tray holder 5 is a plate member in which the tray holding unit 4 is opened, and is lighter than the conventional one. Therefore, even a woman or an inexperienced person can easily and easily exchange.
[0038]
The tray holding section 4 of the tray holder 5 in the present invention is not limited to a configuration in which an opening is opened in a plate material, and may have any configuration as long as the tray 3 can be held. For example, the tray 3 may be configured to be held at a predetermined position by a plurality of pillars standing upright from the tray holder 5. The convex portion 41 formed in the opening of the tray holding portion 4 abuts on the side surface of the tray 3 to bend the opening edge 7 inward from the natural state and reduce the area of the upper surface opening. You may comprise. In the above embodiment, two tray holders 4 on the left and right are formed on one tray holder 5, but the number and shape of the tray holders 4 are not limited to this.
[0039]
The heating member 9 may have any configuration as long as it can heat and seal the sheet material 6. For example, the tray 3 may be formed in a ring shape corresponding to the shape of the opening edge 7.
[0040]
Furthermore, the heat seal wrapping machine 1 according to the present invention can be used irrespective of the type of contents as well as food.
[0041]
【The invention's effect】
As described above, according to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, since the tray holder is detachably attached to the movable table movable between the loading / unloading stage and the heat sealing stage set on the main body, packaging of trays having different sizes and shapes is possible. Can be performed simply by replacing the tray holder. Since the tray holder is lighter than the conventional one, the replacement operation is simple and easy. Therefore, even a woman or an unskilled person can use it without any trouble.
Further, since the configuration is simple and the miniaturization is easy, it can be installed even in a narrow space such as in a store, and the use form can be expanded.
In addition, since the lift unit that moves up and down by the operation force of the operation handle provided on the moving table is provided below the tray holding unit, the tray can be easily removed.
Furthermore, the loading / unloading stage is provided with a locking portion which is locked to the locking portion on the main body side in a state where the lift portion is raised, and a locking portion which is released from the locking portion in a state where the lift member is lowered is provided on the moving table side. The moving table is not moved in a state where it cannot be set to the predetermined height. Therefore, it is possible to prevent troubles such as the movable table being pushed in with the tray raised, the tray being hit by the movable table, being damaged, and the contents being spilled and contaminating the surroundings.
[0042]
According to the invention of claim 2, tray A plurality of pin holes are opened on the upper surface of the tray holder located outside the holding portion along the shape of the opening edge of the tray, and a pin material is provided in each pin hole so as to be able to move up and down. An urging member for urging the pin member so as to protrude from the pin hole is provided for each pin member so that each pin member can be independently raised and lowered, so that the positioning of the sheet member placed on the tray can be easily performed. .
Further, since the pin members can be moved up and down independently, the ascending and descending operation is assured, and it is possible to avoid troubles such as stopping all the pin members while descending and hindering the work.
[0043]
According to the third aspect of the present invention, the tray holding portion is constituted by an opening corresponding to the shape of the tray, and a convex portion protruding toward the inside of the opening is formed on the inner peripheral edge of the opening, thereby holding the tray. When the tray is fitted in the portion, the convex portion presses the side surface of the tray from the outside to the inside to bend the opening edge of the tray inward. In this curved state, the sheet material is placed on the opening edge of the tray. After being placed on the sheet and heat-sealed, tension can be applied to the sheet material by the shape restoring force of the tray taken out from the opening. Therefore, the sheet material is taut and the appearance is improved, and the sheet material is beautiful.
[0044]
According to the fourth aspect of the present invention, since the heating member is configured by fixing the heater to the heating plate having a size capable of covering the tray holding portion, the lower surface of the heating plate comes into contact with the sheet material when the heating member is lowered, and the heating is performed. The opening of the tray can be sealed with the sheet material by transferring the heat of the plate to the sheet material.
[0045]
According to the fifth aspect of the present invention, since the heating plate can swing, even if the tray is slightly inclined, the lower surface of the lowered heating plate can be reliably brought into contact with the entire periphery of the opening edge of the tray. Can be. Therefore, it is possible to reliably seal over the entire periphery of the opening edge of the tray.
[0046]
According to the invention of claim 6, since the tray holder can be replaced with a tray adapted for trays having different shapes and sizes, it is possible to easily cope with trays having different shapes and sizes.
[Brief description of the drawings]
FIG. 1 is a front view of a heat sealing type packaging machine according to the present invention.
FIG. 2 is a right side view of the heat sealable packaging machine.
FIG. 3 is a plan view of the heat sealable packaging machine.
FIG. 4 is a right side view of the heat housing.
FIG. 5 is an exploded perspective view of a slide housing.
6A is an exploded perspective view of a lift mechanism, and FIG. 6B is a front view of a lock mechanism.
FIG. 7A is a perspective view of a tray holder, and FIG. 7B is a cross-sectional view showing a configuration around a pin material.
FIG. 8 is an exploded perspective view of a heating member.
FIG. 9 is a partially cutaway enlarged front view of a heating member and a moving table.
[Explanation of symbols]
1 Heat sealing type packaging machine
2 Moving table
3 trays
4 tray holder
5 tray holder
6 sheet materials
7 Opening edge
9 heating members
10 slide housing
11 Heat housing
12 Support rail
13 Fastening fittings
14 Lock hole as locking part
15 Front wall
16 Side wall
17 Rear view
18 Ceiling
19 Sheet material roll
20 rollers
21 Heat radiation hole
22 Table frame
23 Front panel
24 steps
25 Operation handle
26 Eccentric pin
27 Drive shaft
30 1st link piece
32 Second link piece
33 Third link piece
34 bracket
35 axes
36 Guide pulley
37 Lift section
40 Lock section
41 convex
42 grooves
43 Cushion member
44 pin hole
45 pin case
46 pin material
50 heating plate
51 heater
52 Stay
53 volts
61 Lifting member
62 coil spring
63 Elevating horizontal member
64 roller support column
65 rollers
66 Rotation axis
67 handle
68 cams
69 coil spring
70 nuts

Claims (6)

A moving table movable between a loading / unloading stage set on the main body and a heat sealing stage,
A tray holder that is detachably attached to the moving table and has a tray holding unit that holds a tray;
Heating is provided above the heat seal stage so as to be able to move up and down, and in a state where the sheet material is lowered, abuts against a sheet material placed on the tray of the tray holding unit and heat seals the sheet material to the opening edge of the tray. And a member,
A lift member that moves up and down by an operation force of an operation handle provided on the moving table is provided below the tray holding unit,
Heating characterized in that the lifting member is locked to a locking portion on the main body side in a state where the lift member is raised in the loading / unloading stage, and a lock portion which is released from the locking portion in a state where the lift member is lowered is provided on the moving table side. Sealed packaging machine. A plurality of pin holes are formed on the upper surface of the tray holder located outside the tray holding portion along the shape of the opening edge of the tray, and a pin material is provided in each pin hole so as to be able to move up and down. 2. A heat sealable package according to claim 1, wherein an urging member for urging the portion so as to protrude from the pin hole is provided for each pin member so that each pin member can be independently raised and lowered. Machine. The tray holding portion is constituted by an opening corresponding to the shape of the tray, a convex portion protruding toward the inside of the opening is formed on the inner peripheral edge of this opening, and the tray is fitted in the tray holding portion. The convex portion presses the side of the tray from the outside to the inside, thereby curving the opening edge of the tray inward.In this curved state, the sheet material is placed on the opening edge of the tray and heat-sealed. 3. The heat sealing type packaging machine according to claim 1, wherein a tension is applied to the sheet material by a shape restoring force of the tray taken out. The heat sealing type packaging machine according to any one of claims 1 to 3, wherein the heating member is configured by fixing a heater to a heating plate large enough to cover the tray holding unit. The heat sealing type packaging machine according to claim 4, wherein the heating plate is swingable. The heat sealable packaging machine according to any one of claims 1 to 5, wherein the tray holder is replaceable with a tray adapted to trays having different shapes and sizes.

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