CN105690736A - Method for vertical lap joint of PP hollow boards - Google Patents
Method for vertical lap joint of PP hollow boards Download PDFInfo
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- CN105690736A CN105690736A CN201610203071.0A CN201610203071A CN105690736A CN 105690736 A CN105690736 A CN 105690736A CN 201610203071 A CN201610203071 A CN 201610203071A CN 105690736 A CN105690736 A CN 105690736A
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- China
- Prior art keywords
- hollow sheeting
- hollow
- dip mold
- hollow boards
- bridging method
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention relates to a method for vertical lap joint of PP hollow boards. The method includes the following steps that A, one ends of the PP hollow boards are placed on the upper surface of a lower pressing film, wherein the ends, placed on the lower pressing film, of the PP hollow boards are ends M, the other ends of the PP hollow boards are ends N, and the ends N of the PP hollow boards are arranged between the ends M of the PP hollow boards and an upper pressing film; B, the ends M and the ends N of the PP hollow boards are heated to a fused state by a heating device; and C, the upper pressing film is moved downwards and drives the ends N of the PP hollow boards to move downwards till the ends N of the PP hollow boards and the ends M of the PP hollow boards make contact and are fused together, wherein after the step A is completed, other operations are needed before the step B, specifically, the operations include the steps of A1, the ends M of the PP hollow boards are moved to make the distance between the end faces of the ends M of the PP hollow boards and the edge of the lower pressing film greater than or equal to 1 mm, and A2, a supporting block is arranged on the side face of the lower pressing film, and the upper surface of the supporting block is an inclined face. By means of the method for vertical lap joint of the PP hollow boards, the PP hollow boards are not prone to cracking after vertical lap joint.
Description
Technical field
The present invention relates to the bridging method of a kind of PP hollow sheeting, particularly relate toA kind of vertical bridging method of PP hollow sheeting。
Background technology
PP hollow sheeting is that pp material blends polyethylene raw material through hollow sheet production line extrusion molding, and the cross section of sheet material is lattice shape, is therefore also grid hollow sheeting, and it is widely used in packing crates and makes field。Existing PP hollow sheeting includes two layers of plastic panel and the multiple connecting plates being arranged between two layers of plastic panel, and it is generally 4 millimeters thick, 800 grams every square metre。When manufacturing plastic package box, operator need to be overlapped at the two ends of PP hollow sheeting or weld, referring toFig. 1 to 3, the existing device to PP hollow sheeting overlap joint includes top die and dip mold, and due to the requirement of operating procedure, the bottom surface of general top die is more than the area of the end face of dip mold。During overlap joint, first one end of PP hollow sheeting is placed on the upper surface of dip mold by operator, and its end face is flushed with the side of dip mold, the other end of PP hollow sheeting is disposed there above and is positioned at the lower section of top die, at the two ends of PP hollow sheeting by heater heating to after molten condition, control device control top die move down and drive one end above of PP hollow sheeting to move down gradually until with the end thereof contacts being positioned on dip mold of PP hollow sheeting being welded together。When PP hollow sheeting is overlapped, its overlapped one end is one end that end face is vertical with plastics connecting plate bearing of trend, the i.e. transverse lap mode of PP hollow sheeting, one end its internal per unit length overlapped due to hollow sheeting is contained within multiple Concha Arcae muscle connecting plate, connecting plate herein is as connecting gusset, the bonding strength making two layers of plastic panel is stronger, after PP hollow sheeting overlap joint, the position of its overlap joint is not easily susceptible to cracking, if one end of overlap joint is end face one end parallel with the bearing of trend of connecting plate, the i.e. vertical overlapping mode of PP hollow sheeting, owing to there is a hollow space between two adjacent connecting plates, and plastic front board itself is relatively thin, the sheet material causing overlapped its Concha Arcae muscle connecting plate contained of end of PP hollow sheeting is less, intensity is more weak, top die under press time, the lateral edges of the plastic front board being positioned below and the lateral edges of dip mold are pointed to the same position of the plastic front board of top respectively and produce dissection, after making PP hollow sheeting in overlap joint process or having overlapped, easily there is the phenomenon of cracking in the position of overlap joint, thus causing that the percent defective of product remains high。Due to the PP hollow sheeting case adopting transverse lap mode to overlap, its empty van comprcssive strength is far smaller than the PP hollow sheeting case adopting vertical overlapping mode overlap joint, it is therefore necessary to research oneNovelPP hollow sheeting bridging method so that PP hollow sheeting is not easy to break after vertical overlap joint。
Because above-mentioned defect, the design people, actively in addition research and innovation, to founding oneNovelThe vertical bridging method of PP hollow sheeting of structure so that it is have more the value in industry。
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide the vertical bridging method of PP hollow sheeting that a kind of PP of making hollow sheeting is not easily susceptible to cracking after vertical overlap joint。
The vertical bridging method of PP hollow sheeting of the present invention, comprises the following steps:
A: be placed on the upper surface of dip mold by one end of PP hollow sheeting, one end being placed on dip mold of PP hollow sheeting is M end, and the other end of PP hollow sheeting is N end, is arranged on by the N end of PP hollow sheeting between M end and the top die of PP hollow sheeting；
B: by the heater M end by PP hollow sheeting and the heating of N end to molten condition；
C: make top die move down and drive the N end of PP hollow sheeting to move down, until the M end in contact of the N end of PP hollow sheeting and PP hollow sheeting being fused together；
Between step A and B further comprising the steps of:
A1: the M end of mobile PP hollow sheeting so that the distance at the end face of the M end of PP hollow sheeting and the edge of dip mold is be more than or equal to 1 millimeter；
A2: arranging a bracer on the side of dip mold, the upper surface of described bracer is an inclined plane。
By such scheme, the present invention at least has the advantage that the vertical bridging method of PP hollow sheeting of the present invention, before the M end of PP hollow sheeting and N end overlap joint get up, mobile N end, make the Edge Distance at least 1 millimeter of itself and dip mold, a bracer with inclined plane is set simultaneously on the side of dip mold, owing to the M end of PP hollow sheeting and the edge of dip mold have certain distance, when top die is moved down, the different parts of the N end of PP hollow sheeting is cut by the M end of PP hollow sheeting and the edge of dip mold respectively, thus decreasing the risk of PP hollow sheeting welding broken, in addition, prop up the setting of bracer, PP hollow sheeting is being carried out in cutting process by the edge making dip mold, the cut part of PP hollow sheeting can be played certain supporting role, PP hollow sheeting can produce a section after being pressed down the edge cuts of mould, PP hollow sheeting is easily broken off, propping up bracer makes each several part near the cut place of PP hollow sheeting be supported by the inclined-plane of a bracer respectively, the dislocation produced between each several part of cut place reduces, certain interconnection function can be produced between each several part simultaneously, thus strengthening PP hollow sheeting to be cut the intensity at place, make its not easy fracture。
Further, the vertical bridging method of PP hollow sheeting of the present invention, in step A1, the distance at the end face of the M end of PP hollow sheeting and the edge of dip mold is equal to 2 millimeters。
The setting of 2 millimeters, is the result obtained through test of many times of operator, arranges down at this, the success rate that PP hollow sheeting vertically connects is maximum。
Further, the vertical bridging method of PP hollow sheeting of the present invention, the upper surface of described bracer is be the inclined plane of 45 degree of angles with horizontal direction。
Further, the vertical bridging method of PP hollow sheeting of the present invention, described bracer is one-body molded with dip mold。
Further, the vertical bridging method of PP hollow sheeting of the present invention, further comprising the steps of between step A and B:
A3: the N end of mobile PP hollow sheeting so that the distance at the end face of the N end of PP hollow sheeting and the edge of dip mold is be more than or equal to 0.5 millimeter。
The purpose of this design is so that the different parts of the M end of PP hollow sheeting can be produced dissection by the N end of PP hollow sheeting and the edge of dip mold respectively, thus reducing the risk that PP hollow sheeting connecting portion breaks。
Further, the vertical bridging method of PP hollow sheeting of the present invention, in step A3, the distance at the end face of the N end of PP hollow sheeting and the edge of dip mold is equal to 1 millimeter。
Further, the vertical bridging method of PP hollow sheeting of the present invention, described PP hollow sheeting includes main board, the left projecting plate of the left surface that M end is stressing main plate of PP hollow sheeting, the right projecting plate of the right flank that N end is stressing main plate of PP hollow sheeting, the width of described left projecting plate is 4 millimeters, and the width of described right projecting plate is 5 millimeters。
This is arranged, when overlapping mouth and being 6 millimeters so that the PP hollow sheeting after overlap joint is not easily broken。
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinateAccompanying drawingDescribe in detail as after。
Accompanying drawing explanation
Fig. 1It it is the signal of existing PP hollow sheeting bridging methodFigure；
Fig. 2It it is the signal when the two ends welding of PP hollow sheeting of the existing PP hollow sheeting bridging methodFigure；
Fig. 3It it is the signal after the complete welding in PP hollow sheeting two ends of the existing PP hollow sheeting bridging methodFigure；
Fig. 4It it is the signal of the vertical bridging method of PP hollow sheeting of the present inventionFigure；
Fig. 5It it is the signal when the two ends welding of PP hollow sheeting of the PP hollow sheeting vertical bridging methodFigure；
Fig. 6It it is the vertical view of PP hollow sheetingFigure。
In figure,In figure, 1: dip mold；2:M end；3:N end；4: top die；5: a bracer；6: main board；7: left projecting plate；8: right projecting plate。
Detailed description of the invention
Below in conjunction withAccompanying drawingAnd embodiment, the specific embodiment of the present invention is described in further detail。Following example are used for illustrating the present invention, but are not limited to the scope of the present invention。
Referring toFig. 1ExtremelyFig. 2, a preferred embodiment of the present inventionA kind of vertical bridging method of PP hollow sheeting, comprise the following steps:
A: be placed on the upper surface of dip mold 1 by one end of PP hollow sheeting, one end being placed on dip mold of PP hollow sheeting is the other end of M end 2, PP hollow sheeting is N end 3, is arranged between the M end of PP hollow sheeting and top die 4 by the N end of PP hollow sheeting；
A1: the M end of mobile PP hollow sheeting so that the distance x at the end face of the M end of PP hollow sheeting and the edge of dip mold is be more than or equal to 1 millimeter；
A2: arranging a bracer 5 on the side of dip mold, the upper surface of a bracer is an inclined plane。
B: by heater (In figureNot shown) M end and the N end of PP hollow sheeting are heated to molten condition；
C: make top die move down and drive the N end of PP hollow sheeting to move down, until the M end in contact of the N end of PP hollow sheeting and PP hollow sheeting being fused together。
PP hollow sheeting is when overlap joint, although its M end and N end are respectively at molten condition, but it also keeps certain shape, and due to PP hollow sheeting M end bottom surface from heater farther out, its hardness is larger, therefore, PP hollow sheeting is when overlap joint, the same position of PP hollow sheeting is cut by the edge of M end and dip mold respectively continuously, so that the risk that PP hollow sheeting breaks when overlap joint and after overlap joint is greatly increased, the vertical bridging method of PP hollow sheeting of the present invention has certain distance due to the M end of PP hollow sheeting and the edge of dip mold, when top die is moved down, the different parts of the N end of PP hollow sheeting is cut by the M end of PP hollow sheeting and the edge of dip mold respectively, thus decreasing the risk of PP hollow sheeting welding broken, in addition, prop up the setting of bracer, PP hollow sheeting is being carried out in cutting process by the edge making dip mold, the cut part of PP hollow sheeting can be played certain supporting role, PP hollow sheeting can produce a section after being pressed down the edge cuts of mould, PP hollow sheeting is easily broken off, propping up bracer makes each several part near the cut place of PP hollow sheeting be supported by the inclined-plane of a bracer respectively, the dislocation produced between each several part of cut place reduces, certain interconnection function can be produced between each several part simultaneously, thus strengthening PP hollow sheeting to be cut the intensity at place, make its not easy fracture。
As preferably, the vertical bridging method of PP hollow sheeting of the present invention, in step A1, the distance y at the end face of the M end of PP hollow sheeting and the edge of dip mold is equal to 2 millimeters。
The setting of 2 millimeters, is the result obtained through test of many times of operator, arranges down at this, the success rate that PP hollow sheeting vertically connects is maximum。
As preferably, the vertical bridging method of PP hollow sheeting of the present invention, the upper surface of a bracer is the angle a with horizontal direction is 45 degree。
As preferably, the vertical bridging method of PP hollow sheeting of the present invention, a bracer is one-body molded with dip mold。
As preferably, the vertical bridging method of PP hollow sheeting of the present invention, further comprising the steps of between step A and B:
A3: the N end of mobile PP hollow sheeting so that the distance at the end face of the N end of PP hollow sheeting and the edge of dip mold is be more than or equal to 0.5 millimeter。
As preferably, the vertical bridging method of PP hollow sheeting of the present invention, in step A3, the distance at the end face of the N end of PP hollow sheeting and the edge of dip mold is equal to 1 millimeter。
As preferably, the vertical bridging method of PP hollow sheeting of the present invention, PP hollow sheeting includes main board 6, the left projecting plate 7 of the left surface that M end is stressing main plate of PP hollow sheeting, the right projecting plate 8 of the right flank that N end is stressing main plate of PP hollow sheeting, the width of left projecting plate is 4 millimeters, and the width of right projecting plate is 5 millimeters。
The purpose of this design is in that so that PP hollow sheeting can be good at coordinating with dip mold, thus reducing the risk that PP hollow sheeting breaks。
Below it is only the preferred embodiment of the present invention; it is not limited to the present invention; should be understood that; for those skilled in the art; under the premise without departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention。
Claims (7)
1. the vertical bridging method of PP hollow sheeting, comprises the following steps:
A: be placed on the upper surface of dip mold by one end of PP hollow sheeting, one end being placed on dip mold of PP hollow sheeting is M end, and the other end of PP hollow sheeting is N end, is arranged on by the N end of PP hollow sheeting between M end and the top die of PP hollow sheeting；
B: by the heater M end by PP hollow sheeting and the heating of N end to molten condition；
C: make top die move down and drive the N end of PP hollow sheeting to move down, until the M end in contact of the N end of PP hollow sheeting and PP hollow sheeting being fused together；
It is characterized in that: further comprising the steps of between step A and B:
A1: the M end of mobile PP hollow sheeting so that the distance at the end face of the M end of PP hollow sheeting and the edge of dip mold is be more than or equal to 1 millimeter；
A2: arranging a bracer on the side of dip mold, the upper surface of described bracer is an inclined plane。
2. the vertical bridging method of PP hollow sheeting according to claim 1, it is characterised in that: in step A1, the distance at the end face of the M end of PP hollow sheeting and the edge of dip mold is equal to 2 millimeters。
3. the vertical bridging method of PP hollow sheeting according to claim 1, it is characterised in that: the upper surface of described bracer is be the inclined plane of 45 degree of angles with horizontal direction。
4. the vertical bridging method of PP hollow sheeting according to claim 3, it is characterised in that: described bracer is one-body molded with dip mold。
5. the vertical bridging method of PP hollow sheeting according to claim 1, it is characterised in that: further comprising the steps of between step A and B:
A3: the N end of mobile PP hollow sheeting so that the distance at the end face of the N end of PP hollow sheeting and the edge of dip mold is be more than or equal to 0.5 millimeter。
6. the vertical bridging method of PP hollow sheeting according to claim 5, it is characterised in that: in step A3, the distance at the end face of the N end of PP hollow sheeting and the edge of dip mold is equal to 1 millimeter。
7. the vertical bridging method of PP hollow sheeting according to claim 1, it is characterized in that: described PP hollow sheeting includes main board, the left projecting plate of the left surface that M end is stressing main plate of PP hollow sheeting, the right projecting plate of the right flank that N end is stressing main plate of PP hollow sheeting, the width of described left projecting plate is 4 millimeters, and the width of described right projecting plate is 5 millimeters。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203071.0A CN105690736A (en) | 2016-04-01 | 2016-04-01 | Method for vertical lap joint of PP hollow boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203071.0A CN105690736A (en) | 2016-04-01 | 2016-04-01 | Method for vertical lap joint of PP hollow boards |
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| Publication Number | Publication Date |
|---|---|
| CN105690736A true CN105690736A (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610203071.0A Pending CN105690736A (en) | 2016-04-01 | 2016-04-01 | Method for vertical lap joint of PP hollow boards |
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| CN (1) | CN105690736A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094673A (en) * | 1993-02-12 | 1994-11-09 | 塞恩德公司 | Flatten the method and the splice plate of the plastic plate of splicing |
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2016
- 2016-04-01 CN CN201610203071.0A patent/CN105690736A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094673A (en) * | 1993-02-12 | 1994-11-09 | 塞恩德公司 | Flatten the method and the splice plate of the plastic plate of splicing |
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Application publication date: 20160622 |