CN114055761B - Double-hinge flip back-off mechanism - Google Patents
Double-hinge flip back-off mechanism Download PDFInfo
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- CN114055761B CN114055761B CN202111370625.3A CN202111370625A CN114055761B CN 114055761 B CN114055761 B CN 114055761B CN 202111370625 A CN202111370625 A CN 202111370625A CN 114055761 B CN114055761 B CN 114055761B
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- Prior art keywords
- flip
- hinge
- flip cover
- base
- cover body
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/44—Removing or ejecting moulded articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
Abstract
The utility model discloses a double-hinge flip cover back-off mechanism, which comprises a base, a first flip cover and a second flip cover, wherein the first flip cover is hinged on the base, the second flip cover is hinged on the first flip cover, one side of the second flip cover, which is far away from the first flip cover, is provided with an inclined side edge, when the first flip cover and the second flip cover are in a horizontal first state, the first flip cover and the second flip cover are combined into a back-off structure with a wide upper part and a narrow lower part, a flip stop point is arranged on the base, the first flip cover can be turned up around the hinge point to be abutted against the flip stop point, and the second flip cover can be turned up around the hinge point to reach a maximum value, which is a second state of the first flip cover and the second flip cover; the utility model solves the problems of difficult demoulding and easy deformation of strong demoulding of the back-off with longer height, and reduces the reject ratio of the plastic sucking product.
Description
Technical Field
The utility model relates to the field of plastic suction, in particular to a double-hinge flip back-off mechanism.
Background
The plastic tray is also called as a plastic inner support, and is made of plastic hard sheets into plastic with specific grooves by adopting a plastic sucking process, and the products are placed in the grooves, so that the effects of protecting and beautifying the products are achieved. At present, in order to realize stacking of plastic trays in the field of plastic trays, for the design of a supporting structure of a positive stacking tray, a movable flip back-off structure is commonly used, and the structure is specifically divided into a single flip structure and a double flip structure. However, in the use process of the product, the supporting effect and demolding of the flip back-off are still not ideal, and the design of the material thickening condition is needed. The main cause analysis is as follows: firstly, when the length of the flip cover exceeds 2.5mm, plastic sucking and demolding become difficult, the product is easily deformed due to strong demolding, and the reject ratio is increased. Secondly, flip mechanism material is mostly skd11 stainless steel material, and it is slow to cool off when leading to material and flip mechanism contact, simultaneously, mechanism assembly is on the aluminium mould, because aluminium alloy's thermal conductivity is greater than steel far away, this just causes flip mechanism local high temperature, and under this kind of circumstances, the sheet contact position temperature that the thickness is less than 0.8mm is higher than other positions, and the drawing of patterns can cause the local deformation of plastic uptake tray, causes the outward appearance bad.
Disclosure of Invention
Therefore, the utility model provides a double-hinge flip back-off mechanism for solving the problems.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a double-hinge flip back-off mechanism, includes a base, first flip and second flip, first flip articulates on the base, the second flip articulates on first flip, and one side that first flip was kept away from to the second flip is equipped with the slope side, and when first flip and second flip were in horizontal first state, both combinations were wide down narrow back-off structure, be equipped with a upset shelves point on the base, first flip can upwards overturn to support around the pin joint and lean on the upset shelves point, and second flip upwards overturns around the pin joint and reaches the upset maximum value, and this is the second state of first flip and second flip.
Further improved, the bottom surface of the base is provided with a groove, the overturning baffle point is arranged in the groove, and the bottom surface of one side of the groove on the base is an abutting surface when the first flip is in the first state. The first flip is abutted against the abutting surface of the base by self gravity so as to keep horizontal.
Still further, first flip bottom surface is equipped with the structure of stepping down, and when first flip upwards overturns to certain angle, the structure of stepping down one side supports and leans on the upset shelves point. The abdication structure is matched with the overturning stop point to enable the first flip to be overturned to a certain angle to stop so as to avoid excessive overturning.
Still further, the upset shelves point is cut the shaping on the side of base through wire cut's processing method. Compared with the insert combination mode, the wire cutting mode does not generate the problem of assembly errors.
Further improved, when the first flip and the second flip are in the second state, the edge of the upper end of the second flip is propped against the side face of the first flip, and the inclined side edge of the second flip forms a 90-degree included angle with the bottom face of the base, so that the product can be conveniently demoulded.
Further improved, one side of the second flip close to the first flip is provided with a check stop point structure, and the check stop point structure is abutted against the side face of the first flip when the second flip is in the first state. The check stop structure enables the second flip to be kept horizontal when the second flip is abutted against the side face of the first flip by means of self gravity.
Still further, the check stop structure is a protrusion extending from the lower end of the second flip to the direction of the first flip, and the protrusion and the second flip are integrally formed.
Further improvement, the first flip and the second flip are provided with tangential inlets, the tangential inlets are inlets when the tangential is used for cutting the hinge holes, and the included angle between the tangential inlets and the upper planes of the first flip and the second flip is 30-60 degrees.
Further improved, still include the third flip, the third flip passes through the hinge and connects one side of keeping away from the second flip on first flip, and third flip one side is equipped with the slope side, and first flip, second flip and third flip are the two back-off structures of general symmetry when third flip is in horizontal first state, and the third flip can upwards overturn to the upper end edge and support and lean on first flip side around the pin joint, and this is the second state of third flip, and slope side and the base lateral wall on the flip are parallel when first flip, second flip and third flip are in the second state.
Still further, one side of the third flip close to the first flip is provided with a check stop point structure, and the check stop point structure is abutted against the side face of the first flip when the third flip is in the first state. The check stop structure enables the third flip to be kept horizontal when the third flip is abutted against the side face of the first flip by means of self gravity.
Further improved, a plurality of ventilation grooves are arranged on two side surfaces of the base.
Preferably, the hinge is made of alloy copper, the heat conductivity coefficient of the alloy copper is far greater than that of stainless steel, the hinge is favorable for radiating heat of the flip cover, and poor appearance caused by local deformation of the plastic suction tray is avoided.
The technical scheme provided by the utility model has the following beneficial effects:
this scheme adopts two articulated modes to set up first flip and second flip on the base, has increased flip's length on current basis, upwards overturns first flip and second flip when the drawing of patterns, makes second flip's slope side and base parallel, reaches the upset maximum value, has solved the difficult drawing of patterns of the back-off of longer height, the easy flexible problem of strong drawing of patterns, reduces the defective rate of plastic uptake product.
Drawings
FIG. 1 is a schematic representation of a first embodiment of the present utility model;
FIG. 2 is a schematic view of a base structure of a first embodiment of the present utility model;
FIG. 3 is a schematic view of a base of a first embodiment of the present utility model;
FIG. 4 is an exploded view of a first embodiment of the present utility model;
FIG. 5 is a schematic workflow diagram of a first embodiment of the utility model;
FIG. 6 is a schematic representation of a second embodiment of the present utility model;
fig. 7 is an exploded view of a second embodiment of the present utility model.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
Example 1
As shown in fig. 1 to 5, a double hinge flip back-off mechanism includes a base 1, a first flip 2, and a second flip 3. As shown in fig. 2 and 3, the base 1 is a U-shaped base, and two ends of the base are provided with 1# hinge holes 11. As shown in fig. 4, the first flip cover 2 is provided with a first hinge hole 21 and a second hinge hole 22, and a hinge rod passes through the first hinge hole 21 to connect the first flip cover 2 to the base 1. The section of the second flip cover 3 is in a right trapezoid shape with an inclined side edge, and the inclined side edge is the side waist of the right trapezoid. The second flip cover 3 is provided with a 2# hinge hole 31, and a hinge rod penetrates through the 2# hinge hole 31 to connect the second flip cover 3 with the second hinge hole 22 of the first flip cover 2. The bottom surface of the base 1 is provided with a groove 12, the bottom surface of one side of the groove 12 forms an abutting surface 13, when the first flip 2 and the second flip 3 respectively abut against the abutting surface 13 and the side surface of the first flip 2 by means of self gravity, the first flip 2 and the second flip 3 are in a horizontal first state, the two flip structures are combined to form an inverted structure with a wide upper part and a narrow lower part, and one end of the inverted structure is provided with an area protruding out of the side edge of the base 1. The groove 12 is internally provided with a turnover stop point 14, the first turnover cover 2 can be turned upwards around the hinge point to be abutted against the turnover stop point 14, and the second turnover cover 3 can be turned upwards around the hinge point to reach the maximum turnover value, which is the second state of the first turnover cover 2 and the second turnover cover 3. When the first flip 2 and the second flip 3 are in the second state, the 1# upper end edge 32 of the second flip 3 is abutted against the side face of the first flip 2, and the inclined side edge of the second flip 3 forms a 90-degree included angle with the bottom face of the base 1 and is parallel to the side edge of the base 1, so that the product is convenient to demould.
As shown in fig. 5, when the first flip cover 2 and the second flip cover 3 are in the first state, the plastic sheet is heated and softened and is absorbed on the mechanism in a vacuum suction manner, after cooling, the plastic suction product forms a single back-off structure when the plastic suction product is in the first state with the first flip cover 2 and the second flip cover 3, the upper surface formed by combining the first flip cover 2 and the second flip cover 3 corresponds to the bottom surface of the single back-off structure, the inclined side edge of the second flip cover 3 corresponds to the inclined edge of the single back-off structure, and the lower surface formed by combining the first flip cover 2 and the second flip cover 3 corresponds to the demoulding opening of the single back-off structure. In the demolding process, the plastic sucking product moves upwards, the first flip cover 2 is driven to flip upwards from the first state to the second state to abut against the flip stop 14, and then the second flip cover 3 is driven to flip upwards to the second state to abut against the side face of the first flip cover 2. After demolding, the first flip cover 2 and the second flip cover 3 can rotate downwards to a first state by means of self gravity, and the next plastic suction can be continued.
Specifically, as shown in fig. 4, the bottom surface of the first flip 2 is provided with a concave abdication structure 24, and when the first flip 2 is flipped up to a certain angle, one side of the abdication structure 24 abuts against the flip stop 14. The abdication structure is matched with the overturning stop point 14 to enable the first flip cover 2 to be overturned to a certain angle so as to stop, so that excessive overturning is avoided. In other embodiments, the size of the first flip 2 may also be adjusted so that the edge at the bottom end of the first flip 2 abuts against the flip stop 14, preventing the first flip 2 from continuing to flip upwards.
Specifically, the turning stop 14 extends upward from the recess 12 to form a triangular structure, and the relief structure 24 abuts against a side surface of the turning stop 14. The overturning baffle point 14 and the base 1 are of an integrated structure, and are cut and formed on the side surface of the base 1 in a linear cutting machining mode. The specific operation is as follows: the upper end of the side surface of the base 1 is provided with an inlet, and the 1# hinge hole 11 and the turning stop point 14 are cut by cutting from top to bottom and from left to right. If the wire cutting processing is not adopted, the base and the overturning baffle point are required to be combined in the form of an insert, and the mode has the problem of assembly errors, so that the problems of turnover of the flip, incapability of accurate return, warping and the like can be caused.
Further, a 1# check stop structure 33 is arranged on one side, close to the first flip cover 2, of the second flip cover 3, and when the second flip cover 3 is in the first state, the 1# check stop structure 33 abuts against the side face of the first flip cover 2, so that the second flip cover 3 keeps horizontal when abutting against the side face of the first flip cover 2 by means of self gravity.
Specifically, the 1# check point structure 33 is a protrusion extending from the lower end of the second flip cover 3 to the direction of the first flip cover 2, and the protrusion and the second flip cover 3 are an integrated structure.
Further, as shown in fig. 4, the first flip 2 and the second flip 3 are hinged by a hinge, the first flip 2 is provided with a convex portion 23, the second hinge hole 22 is formed in the convex portion 23, a concave portion 34 is formed at the hinge position of the second flip 3 and the first flip 2, and the convex portion 23 and the concave portion 34 are meshed and hinged with each other. In other embodiments, more than two male and female portions may be provided that are snap-fit to each other.
In this embodiment, the first flip 2 and the second flip 3 are provided with tangential inlets, and the tangential inlets are inlets when the hinge holes are cut by using tangential lines, so that the flip can be ensured not to crack and deform by cutting by using 30-60 degrees of oblique direction lines through practice, and the hinge rod is tightly wrapped, so that the hinge rod cannot be deformed and loosened due to long use time.
In the present embodiment, as shown in fig. 3, a plurality of ventilation grooves 15, preferably ventilation grooves 15 with a depth of 0.2mm, are provided on both side surfaces of the base 1, so that the vacuum forming of the plastic sheet is more suitable for the surface of the structure.
Further, the material of first flip 2 and second flip 3 is skd11, and the material of articulated pole is alloy copper, and alloy copper's coefficient of heat conductivity is greater than the stainless steel far away, is favorable to first flip 2 and second flip 3 heat dissipation, avoids the local deformation of plastic uptake tray, causes the outward appearance bad.
In this embodiment, the bottom of the base 1 is provided with screw holes 16 for fixing with the outside, so as to prevent the base 1 from being displaced during the plastic sucking process to affect the molding of the plastic sucking product. The screw holes 16 are provided with chamfers to facilitate the installation of screws. The base 1 base is equipped with the chamfer, makes the mechanism assembly laminate the surface more on the mould, guarantees mechanism levelness.
In this embodiment, it is preferable to spray teflon paint on the surfaces of the first flip cover 2 and the second flip cover 3, so as to further increase the smoothness of demolding.
Example 2
As shown in fig. 6 and 7, a third flip cover 4 is also included, unlike embodiment 1. One side of the third flip cover 4 is provided with an inclined side edge. The first flip cover 2 is provided with three, and is coaxially connected to the base 1 through a hinge rod. The bottom of the first flip cover 2 positioned in the middle is provided with an inclined side edge which is connected with the second flip cover 3, and the bottom of the first flip cover 2 positioned in front and back is provided with an inclined side edge which is connected with the third flip cover 4. The first flip cover 2 is provided with a first hinge hole 21 and a second hinge hole 22, the first hinge hole 21 is used for being connected with the base 1, and the second hinge hole 22 is used for being connected with the second flip cover 3 and the third flip cover 4 respectively. The third flip 4 is provided with a 3# hinge hole 41, and the hinge member passes through the 3# hinge hole 41 to connect the third flip 4 to the second hinge holes 22 of the front and rear two first flip 2. When the third flip 4 is in the horizontal first state, the first flip 2, the second flip 3 and the third flip 4 are in a substantially symmetrical double back-off structure, and two ends of the double back-off structure are provided with areas protruding out of the side edge of the base 1. The third flip 4 can be flipped up around the hinge point until the upper edge 42 of # 2 abuts against the side of the first flip 2, this is the second state of the third flip 4, and when the first flip 2, the second flip 3 and the third flip 4 are in the second state, the inclined side edges on the flip are parallel to the side wall of the base 1.
Similarly, as shown in fig. 7, a 2# check point structure 43 is disposed on a side of the third flip cover 4 close to the first flip cover 2, and the 2# check point structure 43 abuts against a side surface of the first flip cover 2 when the third flip cover 4 is in the first state.
In this embodiment, the front and rear sides of the third flip cover 4 are provided with avoiding grooves of the first flip cover 2.
In this embodiment, the first flip cover 2, the second flip cover 3, and the third flip cover 4 are in a horizontal first state, and are molded in a double back-off structure. During demolding, the turnover covers on the two sides synchronously turn over, so that the inclined side edges on the turnover covers are parallel to the side wall of the base 1, and the plastic uptake product is smoothly pulled out.
According to the technical scheme provided by the utility model, the first flip cover 2 and the second flip cover 3 are arranged on the base 1 in a double-hinge mode, and the length of the flip cover is increased to 5mm on the basis of the prior art, so that the height of the reverse buckle of the plastic uptake product is increased, and the product requirement is met. Meanwhile, the turnover angle of the turnover cover is increased, the inclined side edge of the turnover cover is parallel to the side wall of the base 1, the turnover maximum value of the turnover cover is achieved, the problems that the back-off of a longer height is difficult to demould and the back-off is strong to demould and easy to deform are solved, and the reject ratio of plastic-absorbing products is reduced. The structure is simple, the service life is long, and the production efficiency is improved.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (11)
1. The utility model provides a double-hinge flip back-off mechanism which characterized in that: the device comprises a base, a first flip and a second flip, wherein the first flip is hinged on the base, the second flip is hinged on the first flip, one side, far away from the first flip, of the second flip is provided with an inclined side edge, when the first flip and the second flip are in a horizontal first state, the first flip and the second flip are combined to form a flip structure with a wide upper part and a narrow lower part, a flip stop point is arranged on the base, the first flip can be flipped upwards around the hinge point to be abutted against the flip stop point, and the second flip can be flipped upwards around the hinge point to reach a flip maximum value, which is a second state of the first flip and the second flip;
the first flip cover is provided with a first hinge hole and a second hinge hole, and the hinge rod penetrates through the first hinge hole to connect the first flip cover to the base; the second flip cover is provided with a hinge hole, and the hinge rod penetrates through the hinge hole to connect the second flip cover with the second hinge hole of the first flip cover; a first hinge hole is formed in one side, far away from the second flip, of the first flip, and a second hinge hole is formed in one side, close to the second flip, of the first flip;
when the first flip and the second flip are in the second state, the edge of the upper end of the second flip is abutted against the side face of the first flip, and an inclined side edge of the second flip forms a 90-degree included angle with the bottom face of the base.
2. The dual hinge flip back-off mechanism of claim 1, wherein: the bottom surface of base is equipped with a recess, upset shelves point locates in the recess, and the one side bottom surface of recess is the butt face when first flip is in the first state on the base.
3. A dual hinge flip back-off mechanism as claimed in claim 1 or 2, wherein: the first flip bottom surface is equipped with the structure of stepping down, and when first flip upwards overturns to certain angle, the structure of stepping down one side supports and leans on the upset shelves point.
4. A dual hinge flip back-off mechanism as claimed in claim 1 or 2, wherein: the overturning baffle points are cut and formed on the side face of the base in a linear cutting machining mode.
5. The dual hinge flip back-off mechanism of claim 1, wherein: and one side of the second flip close to the first flip is provided with a check stop point structure, and the check stop point structure is abutted against the side surface of the first flip when the second flip is in the first state.
6. The dual hinge flip back-off mechanism of claim 5, wherein: the check stop point structure is a protrusion extending from the lower end of the second flip to the direction of the first flip, and the protrusion and the second flip are of an integrated structure.
7. The dual hinge flip back-off mechanism of claim 1, wherein: tangential inlets are arranged on the first flip and the second flip, the tangential inlets are inlets when the tangential is used for cutting the hinge holes, and the included angle between the tangential inlets and the upper planes of the first flip and the second flip is 30-60 degrees.
8. The dual hinge flip back-off mechanism of claim 1, wherein: the novel flip cover comprises a first flip cover body, and is characterized by further comprising a third flip cover body, wherein the third flip cover body is connected to one side, far away from the second flip cover body, of the first flip cover through a hinge piece, an inclined side edge is arranged on one side of the third flip cover body, the first flip cover body, the second flip cover body and the third flip cover body are of a double-back-off structure which is generally symmetrical when the third flip cover body is in a horizontal first state, the third flip cover body can be turned upwards around a hinge point to the upper end edge to lean against the side face of the first flip cover body, the second state of the third flip cover body is achieved, and the inclined side edges on the flip cover bodies on the two side faces are parallel to the side wall of a base when the first flip cover body, the second flip cover body and the third flip cover body are in a second state.
9. The dual hinge flip back-off mechanism of claim 8, wherein: one side of the third flip close to the first flip is provided with a check stop point structure, and the check stop point structure is abutted against the side face of the first flip when the third flip is in the first state.
10. The dual hinge flip back-off mechanism of claim 1, wherein: and a plurality of ventilation grooves are formed in two side surfaces of the base.
11. The dual hinge flip back-off mechanism of claim 1, wherein: the hinge piece is made of alloy copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370625.3A CN114055761B (en) | 2021-11-18 | 2021-11-18 | Double-hinge flip back-off mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370625.3A CN114055761B (en) | 2021-11-18 | 2021-11-18 | Double-hinge flip back-off mechanism |
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| Publication Number | Publication Date |
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| CN114055761A CN114055761A (en) | 2022-02-18 |
| CN114055761B true CN114055761B (en) | 2023-09-12 |
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| CN202111370625.3A Active CN114055761B (en) | 2021-11-18 | 2021-11-18 | Double-hinge flip back-off mechanism |
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