CN110193899B

CN110193899B - Sealing strip butt joint mould

Info

Publication number: CN110193899B
Application number: CN201910426001.5A
Authority: CN
Inventors: 张双彬; 刘峰; 高静召; 王影俏; 刘洋
Original assignee: Nuobo Rubber Production Co Ltd
Current assignee: Nobo Automobile Rubber And Plastic Anhui Co ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2021-01-26
Anticipated expiration: 2039-05-21
Also published as: CN110193899A

Abstract

The invention provides a sealing strip butt joint mould which comprises two groups of mould split bodies, wherein each group of mould split bodies comprises an upper mould and a lower mould which are arranged up and down, a cavity for accommodating the sealing strip split bodies is formed between the upper mould and the lower mould of the same group of mould split bodies, the cavity is constructed in a way that the appearance surfaces of the sealing strip split bodies are arranged upwards, under the driving of the outside, the two groups of mould split bodies can move relatively to enable the two cavities to be communicated, and a joint area is formed by the communication parts of the two cavities. According to the sealing strip butt joint die, the appearance surfaces of the split sealing strips are kept upward, and the appearance surfaces of the joint areas in the molding state are kept upward, so that the influence of gravity factors on the appearance surfaces of the joint areas in the butt joint process can be reduced, burrs on the appearance surfaces of the joint areas are reduced, the yield of products can be improved well, and the production efficiency can be improved.

Description

Sealing strip butt joint mould

Technical Field

The invention relates to the technical field of dies, in particular to a sealing strip butt joint die.

Background

In the processing process of the sealing strip, the two sealing strip split bodies are required to be manufactured and molded separately, then the two sealing strip split bodies are in butt joint and fixedly connected together through a butt joint die, the two sealing strips are generally in butt joint and fixedly connected together through a rubber sheet, the rubber sheet and the two sealing strips form a whole by adopting a heating vulcanization process, and a joint area is formed between the two sealing strip split bodies.

The butt joint mould is important process equipment for producing the split butt joint of the automobile sealing strip, and the design and manufacturing quality of the butt joint mould have important influences on the application performance, appearance quality, cost, production efficiency and the like of the sealing strip.

The existing automobile sealing strip butt joint mould has higher requirement on the machining precision, but has poor practicability, burrs are always arranged in the joint area of two butted sealing strips, the burrs are difficult to control, the appearance quality of a product is poor, the reject ratio is higher, the follow-up cleaning process can be increased, time and labor are wasted, the production efficiency is reduced, and the use requirement of a consumer cannot be well met.

Disclosure of Invention

In view of the above, the present invention is directed to a sealing strip butt mold, which can improve the appearance quality of the joint area.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a kind of sealing strip butt joint mould, is used for linking the end of two sealing strip separate bodies together via the butt joint of the rubber flake, and because should link firmly and in two there is junction area between the said sealing strip separate bodies, the said sealing strip butt joint mould includes:

the sealing strip split structure comprises two groups of die split bodies, wherein each group of die split bodies comprises an upper die and a lower die which are arranged up and down, a cavity for accommodating the sealing strip split body is formed between the upper die and the lower die of each group of die split bodies in a surrounding mode, the cavity is constructed to keep the appearance face of the sealing strip split body arranged upwards, the two groups of die split bodies can move relatively under the driving of the outside to enable the two cavities to be communicated, and the connecting part of the two cavities forms the connecting area.

Furthermore, the part of the cavity corresponding to the appearance surface of the sealing strip split body is only positioned on the upper die.

Furthermore, only one of the die split bodies is provided with a cutting edge which is arranged in an outward protruding manner, the cutting edge is circumferentially arranged around the cavity of the die split body and comprises an upper cutting edge formed on the upper die and a lower cutting edge formed on the lower die.

Furthermore, an installation block is detachably and fixedly connected to an upper die on which the upper cutting edge is formed, and the upper cutting edge is formed on the installation block.

Furthermore, the upper die with the upper cutting edge and the lower die with the lower cutting edge are both provided with cutting edge protection blocks which are arranged in an outward protruding mode.

Furthermore, on the upper die or the lower die, a cutting edge extending along the parting surface of the upper die and the lower die is arranged, and one end of the cutting edge is connected with the cutting edge.

Furthermore, each group of the die split bodies also comprises an upper mounting piece for mounting the upper die and a lower mounting piece for mounting the lower die; the lower die comprises a rear cavity block and a front lower cavity block which are arranged on the lower mounting piece, and further comprises a front upper cavity block which is arranged on the front lower cavity block, and the upper die, the rear cavity block, the front lower cavity block and the front upper cavity block jointly enclose to form the cavity.

Further, the rear cavity block is mounted on the lower mounting piece through vertically arranged shoulder bolts, and the front lower cavity block is rotatably connected to the lower mounting piece through a pivot shaft parallel to the length direction of the split sealing strip.

Further, in go up the mould with be equipped with the slip guide structure between the lower mould, the slip guide structure constitutes go up the mould with the lower mould follow the direction of sealing strip components of a whole that can function independently length direction relative slip, just the slip guide structure including the shaping in lower spigot surface on the lower mould, and match in lower spigot surface, and the shaping in last spigot surface on last mould.

Furthermore, a positioning guide mechanism is arranged between the two groups of die split bodies, the guide mechanism forms a guide for communicating the two die cavities, and the positioning guide mechanism comprises a conical positioning hole formed on one of the die split bodies and a conical positioning pin matched with the conical hole and formed on the other die split body.

Compared with the prior art, the invention has the following advantages:

according to the sealing strip butt joint die, the appearance surfaces of the split sealing strips are kept upward, and the appearance surfaces of the joint areas in the molding state are kept upward, so that the influence of gravity factors on the appearance surfaces of the joint areas in the butt joint process can be reduced, burrs on the appearance surfaces of the joint areas are reduced, the yield of products can be improved well, and the production efficiency can be improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a sealing strip butt-joint mold according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the sealing strip of the embodiment of the present invention after being split and butted;

FIG. 3 is a schematic view of the unassembled left upper die and a portion of the lower die of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic structural view of a split right-side mold according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a split body of the left-side mold according to the embodiment of the present invention;

FIG. 8 is a schematic structural view of an assembly of a rear cavity block, a front lower cavity block and a front upper cavity block according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a mounting block according to an embodiment of the present invention;

FIG. 10 is a top view of FIG. 3;

FIG. 11 is a cross-sectional view B-B of FIG. 10;

description of reference numerals:

1-sealing strip split, 2-combining area, 5-cutting edge, 6-mounting block, 9-positioning pin and 10-fastening bolt;

301-upper die, 302-lower die, 3021-rear cavity block, 30211-through hole, 3022-front lower cavity block, 30221-groove, 3023-front upper cavity block, 3024-cavity block mounting plate, 30241-mounting boss, 303-cavity, 304-upper mounting piece, 305-lower mounting piece, 306-shoulder bolt;

401-upper cutting edge, 402-lower cutting edge, 403-cutting edge protection block;

701-upper guide surface, 702-lower guide surface;

801-tapered locating holes, 802-tapered locating pins.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "left", "right", "front", "back", etc. indicate orientations or positional relationships based on those shown in fig. 2, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The embodiment relates to a sealing strip butt joint mould for the tip of two sealing strip components of a whole that can function independently links together via the butt joint of rubber thin slice, and be formed with the joining region because of should linking firmly between two sealing strip components of a whole that can function independently, the sealing strip butt joint mould of this embodiment mainly includes two sets of mould components of a whole that can function independently, and every group mould components of a whole that can function independently all includes last mould and lower mould of arranging from top to bottom, and encloses between the last mould of same group mould components of a whole that can function independently and the lower mould and construct the die cavity with the holding sealing strip components of a whole that can function independently, the die cavity is constructed to keep the outward appearance face of sealing strip components of a whole that can function independently to arrange.

Based on the above structural description, an exemplary structure of the sealing strip butt joint mold of the present embodiment is shown in fig. 1, and mainly includes two sets of mold split bodies for respectively mounting two sealing strip split bodies 1, which are hereinafter referred to as a left mold split body and a right mold split body, respectively, for convenience of description. Fig. 2 shows a structure of two sealing strip split bodies 1 after butt joint, a joint area 2 is connected between the two sealing strip split bodies 1, and the joint area 2 is formed by vulcanizing a rubber sheet and forms a sealing strip whole with the sealing strip split bodies 1 on two sides.

In this embodiment, the left mold split and the right mold split have substantially the same structure, and the structure of the right mold split will be described in detail with reference to fig. 3 and fig. 4 with reference to fig. 6, where the right mold split includes an upper mold 301 and a lower mold 302 arranged up and down, a cavity 303 is defined between the upper mold 301 and the lower mold 302, the cross-sectional shape of the cavity 303 is consistent with the cross-sectional shape of the weatherstrip split 1, in order to improve the quality of the appearance surface of the junction area, the cavity 303 is configured to keep the appearance surface of the weatherstrip split 1 upward, that is, after the weatherstrip split 1 is installed in the cavity 303, the appearance surface of the weatherstrip split 1 is upward, since the butt-joint process is a heat vulcanization process, gravity may cause a rubber sheet in a molten state to have a tendency of flowing downward, so that the influence of gravity factor on the quality of the appearance surface of the junction area can be, the product quality can be better improved, and the production efficiency is improved.

Specifically, the mold split body includes an upper mounting member 304 to which the upper mold 301 is mounted, and a lower mounting member 305 to which the lower mold 302 is mounted, the upper mounting member 304 and the lower mounting member 305 are substantially flat plate-shaped, the upper mold 301 and the upper mounting member 304 are fixedly connected together, four fastening bolts 10 and two positioning pins 9 are connected between the upper mold 301 and the upper mounting member 304, the lower mold 302 and the lower mounting member 305 are fixedly connected together, and four fastening bolts 10 and two positioning pins 9 are also connected between the lower mold 302 and the lower mounting. An upper mounting member 304 and a lower mounting member 305 are provided, which may be supported by different materials from those used for the upper mold 301 and the lower mold 302, thereby facilitating cost reduction and facilitating the provision of external driving members for the upper mold 301 and the lower mold 302, respectively.

In order to further improve the quality of the appearance surface of the joint area, the part of the cavity 303 corresponding to the appearance surface of the weatherstrip split body 1 is only positioned on the upper die 301. In this embodiment, the portion of the upper mold 301 having an arc-shaped cross section is used for forming the appearance surface of the bonding region 2, and the portion is of a unitary structure.

For the convenience of installation, the lower installation part 305 has an installation hole with a U-shaped cross section formed on the periphery thereof, and the number and shape of the installation holes are not limited, which is favorable for stable installation on the external driving member. Mounting holes having a U-shaped cross section are also formed in the upper mounting member 304 corresponding to the mounting holes in the lower mounting member 305, and also serve to facilitate the connection of the upper mounting member 304 with an external driving member.

For convenience in processing and installation, the lower die 302 includes a rear cavity block 3021 and a front lower cavity block 3022 mounted on the lower mounting member 305, and further includes a front upper cavity block 3023 mounted on the front lower cavity block 3022, the upper die 301, the rear cavity block 3021, the front lower cavity block 3022 and the front upper cavity block 3023 together form the cavity 303, and the appearance surface of the weatherstrip split body 1 is covered by a structural member, i.e., the upper die 301, so that the quality of the appearance surface of the junction area 2 can be further improved. Here, for the sake of convenience of installation, the lower mold 302 further includes a cavity block mounting plate 3024 attached to the lower mounting member 305, the rear cavity block 3021 and the front lower cavity block 3022 are mounted on the cavity block mounting plate 3024, and the cavity block mounting plate 3024 and the lower mounting member 305 are connected via the positioning pins 9 and the fastening bolts 10. In the above configuration, the cavity block mounting plate 3024 may be integrated with the lower fixture 305.

As shown in connection with fig. 8, 10 and 11, to facilitate later seal strip removal, the rear cavity block 3021 is mounted on the lower mount 305 via shoulder bolts 306 threaded through itself, and the axial direction of the shoulder bolts 306 is arranged vertically so that the rear cavity block 3021 can have movement in the vertical direction; specifically, a through hole 30211 is formed in the rear cavity block 3021, the through hole 30211 is arranged in a penetrating manner, the axial direction of the through hole 30211 is vertical, a stepped surface is formed on a side wall of the through hole 30211, the diameter of the through hole 30211 is large at the top and small at the bottom, a threaded hole is formed in the cavity block mounting plate 3024 corresponding to the through hole 30211, the diameter of the threaded hole is smaller than the small diameter of the through hole 30211, the shoulder bolt 306 is threaded into the threaded hole after penetrating through the through hole 30211, and the nut of the shoulder bolt 306 is accommodated in the large diameter section of the through hole 30211 and has a gap with the stepped surface, so that a certain movement space still exists in the vertical direction after the rear cavity block 3021 is mounted on the cavity block mounting.

The forward lower cavity block 3022 is pivotally connected to the lower mount 305 with the pivot axis being disposed along the length of the seal strip. Referring to fig. 10 and 11, in a specific structure, a convex mounting boss 30241 is formed on the cavity block mounting plate 3024, and a bolt hole is formed on the mounting boss 30241, and the bolt hole is axially arranged along the length direction of the sealing strip; a groove 30221 is formed in the front lower cavity block 3022 corresponding to the mounting boss 30241, and mounting holes are formed on both sides of the groove 30221 and are coaxially arranged with the bolt holes, bolts or other connecting members are inserted into the two mounting holes and fixedly connected with the bolt holes on the corresponding sides, and the diameter of the connecting member is smaller than that of the mounting holes, so that the front lower cavity block 3022 can pivot relative to the cavity block mounting plate 3024.

The front upper cavity block 3023 is fixedly connected to the front lower cavity block 3022, in this embodiment, the front upper cavity block 3023 is fixedly connected to the front lower cavity block 3022 via a bolt passing through a through hole of the front upper cavity block 3023, and the front upper cavity block and the front lower cavity block can be fixedly connected together by other methods, such as welding, riveting, and the like.

As shown in fig. 3 and 4 in conjunction with fig. 7, the left mold division and the right mold have substantially the same structure, and also include an upper mounting member 304, an upper mold 301, a lower mounting member 305, a cavity block mounting plate 3024, a rear cavity block 3021, a front lower cavity block 3022, and a front upper cavity block 3023, and the specific assembly relationship is the same as that of the right mold division, and will not be described in detail.

As shown in fig. 4 and 5 in conjunction with fig. 6, in order to form a better appearance surface of the joint area, only one of the mold split bodies is provided with the cutting edges arranged in an outward protruding manner. So set up, two sets of mould components of a whole that can function independently, in the butt joint region of die cavity 303, one side is the blade, and the opposite side is the plane, because the blade only sets up on the mould components of a whole that can function independently of one side, therefore can reduce the blade and damage and the deckle edge that produces, and then improve the apparent surface quality in bonding area.

The outer convex height of the cutting edge is generally 1.5-2.5mm, the cutting edge is circumferentially arranged around the cavity 303 of the split mold and comprises an upper cutting edge 401 formed on the upper mold 301 and a lower cutting edge 402 formed on the lower mold 302, in this embodiment, the lower cutting edge 402 is formed by the outer convex structures of a rear cavity block 3021, a front lower cavity block 3022 and a front upper cavity block 3023.

In order to improve the quality of the appearance surface of the bonding area 2, the upper die 301 comprises an upper die body and an installation block 6 which is detachably and fixedly connected with the upper die body, an installation groove which is not shown in the figure is formed in the upper die body, the installation block 6 has a certain thickness along the length direction of the split sealing strip and is installed in the installation groove, and the size of the installation groove is matched with the structure of the installation block 6. The upper cutting edge 401 is formed on the mounting block 6, so that the mounting block 6 can be made of high-precision die steel, and the rest of the upper die 301 can be made of a material with slightly lower precision, so that the cost can be reduced while the appearance quality of the product is improved.

In addition, in order to protect the cutting edge from being damaged, the upper die 301 formed with the upper cutting edge 401 and the lower die 302 formed with the lower cutting edge 402 are both provided with the cutting edge protection block 403 protruding outwards.

In addition, the cutting edge 5 extending along the parting plane of the upper mold 301 and the lower mold 302 is provided on the upper mold 301 or the lower mold 302, one end of the cutting edge 5 is in contact with the edge, and the cutting edge 5 is specifically configured in an elongated shape extending outward from the edge of the edge. The cutting edge 5 functions to: because the shape of the rubber sheet is generally larger than the shape size of the cross section of the seal split body 1, the thickness of the rubber sheet is generally 0.7-1.3mm, after the two groups of molds are butted, the rubber sheet is cut by the cutting edge and the cutting edge 5, the rubber sheet surrounded by the cutting edge is vulcanized and fixedly connected with the seal split body 1, the rubber sheet outside the area surrounded by the cutting edge is waste material, because the shape size of the rubber sheet is slightly larger than the cross section of the seal split body 1, and the cutting edges form a cutting seam extending along the parting surface of the upper mold 301 and the lower mold 302 on the waste material, the opening and closing of the upper mold 301 and the lower mold 302 are facilitated, the removal of the waste material is facilitated, and the quality of the appearance surface of the bonding area 2 is prevented from being influenced in.

Referring to fig. 5, it can be seen that the cross-sectional shape of the cutting edge 5 gradually increases the thickness of the cutting edge 5 from the end surface of the cutting edge 5 to the upper die 301. The cross sectional shape of the cutting edge is the same as that of the cutting edge 5, and the thickness of the cutting edge is gradually increased from the end surface of the cutting edge to the upper die 301 or the lower die 302.

A sliding guide structure is arranged between the upper die 301 and the lower die 302, and the sliding guide structure forms the guide of the relative sliding of the upper die 301 and the lower die 302 along the length direction of the sealing strip; still referring to fig. 3, the slide guide structure includes a lower guide surface 702 formed on the lower mold 302, and an upper guide surface 701 formed on the upper mold 301 to match the lower guide surface 702. It should be further noted that, in the present embodiment, the sliding guide structures between the two sets of mold split bodies are matched, and no limit structure is provided between the upper mold 301 and the lower mold 302, so that the two upper molds 301 can move laterally together, which is beneficial to improving the quality of the appearance surface of the bonding area 2.

In this embodiment, in order to improve the production efficiency, there are three cavities 303 on each set of mold split body, and in practical application, the number of the rubber sheets is also three, and the area of the rubber sheet is slightly larger than the cross-sectional area of the sealing strip split body 1. In addition, lower guide surfaces 702 are provided at both ends of the lower mold 302 in the longitudinal direction, and are formed between the adjacent mounting blocks 6 of the cavity 303.

A positioning guide mechanism is also arranged between the two groups of split dies and forms a guide for communicating the two cavities 303; referring to fig. 6 and 7, the positioning guide mechanism includes a tapered positioning hole 801 formed in one of the mold split bodies and a tapered positioning pin 802 formed in the other mold split body in matching with the tapered hole.

In practical application of the sealing strip butt-joint mold of the present embodiment, at least one set of mold split bodies can receive driving of an external member and horizontally slide relative to the other set of mold split bodies, so that the two cavities 303 are communicated, and the connecting portion 2 is formed by the communicating portion.

Specifically, the two upper mounting members 304 and the two lower mounting members 305 are mounted on different drive members, respectively, and the preparation work is required as follows: firstly, determining that the positioning of split mold closing positions of equipment and a mold is effective; the equipment program runs correctly; each moving part stably moves without clamping stagnation; and fourthly, adjusting each motion module to a mold closing state.

It should be further noted that the left mold split body and the right mold split body are made of heat conducting materials, so that the upper mounting piece 304 and the lower mounting piece 305 can be heated by an external heat source, heat is conducted to the position of the cavity, and then the rubber sheet is heated, so that the purpose of vulcanizing and fixedly connecting the rubber sheet and the two sealing strip split bodies 1 is achieved. In order to facilitate temperature control, a thermocouple mounting hole is further formed in the middle of the cavity block mounting plate 3024 to mount a thermocouple to grasp the temperature inside the mold.

When the method is applied specifically, the mold is heated to 195-.

Then the two upper dies 301 are opened upwards and relatively far away from each other at the same time, the waste materials of the rubber sheets on the upper dies 301 are removed, the upper dies 301 on the left side and the right side move laterally together, specifically, the upper dies 301 with the cutting edges move 8-15 mm to one side of the upper dies 301 without the cutting edges, then the dies are closed and continue to be vulcanized for 2-5 seconds, and finally the two upper dies 301 rise and move laterally to complete die opening, so that the product is in burr-free butt joint.

Finally, the front lower cavity block 3022 is driven by an external driving member to drive the front upper cavity block 3023 to turn over counterclockwise, and because the rear cavity block 3021 is displaced in the vertical direction, the counterclockwise turning of the front lower cavity block 3022 and the front upper cavity block 3023 is not hindered, thereby facilitating the taking out of a complete seal strip.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a sealing strip butt joint mould for link firmly the tip of two sealing strip components of a whole that can function independently (1) together via the butt joint of rubber thin slice, and because of this link firmly in two be formed with joining region (2) between sealing strip components of a whole that can function independently (1), its characterized in that, sealing strip butt joint mould includes:

the sealing strip split structure comprises two groups of mould split bodies, wherein each group of mould split body comprises an upper mould (301) and a lower mould (302) which are arranged up and down, a cavity (303) for accommodating the sealing strip split body is formed between the upper mould (301) and the lower mould (302) of each group of mould split body in a surrounding mode, and the part, corresponding to the appearance surface of the sealing strip split body (1), of the cavity (303) is only located on the upper mould (301); the cavity (303) is configured to keep the appearance face of the sealing strip split body (1) arranged upwards, and under the driving of the outside, the two groups of the mold split bodies can move relatively to communicate the two cavities (303), so that the connecting area (2) is formed by the communication part of the two cavities;

and only one of the die split bodies is provided with a cutting edge which is arranged in an outward protruding way, the cutting edge is arranged around the circumferential direction of the cavity (303) of the die split body and comprises an upper cutting edge (401) formed on the upper die (301) and a lower cutting edge (402) formed on the lower die (302).

2. The butt mold for sealing strips according to claim 1, wherein: an installation block (6) is detachably and fixedly connected to an upper die (301) formed with the upper cutting edge (401), and the upper cutting edge (401) is formed on the installation block (6).

3. The butt mold for sealing strips according to claim 1, wherein: and edge protection blocks (403) which are convexly arranged are formed on the upper die (301) on which the upper cutting edge (401) is formed and the lower die (302) on which the lower cutting edge (402) is formed.

4. The butt mold for sealing strips according to claim 1, wherein: on go up mould (301) or be equipped with on lower mould (302) and follow go up mould (301) with cutting edge (5) that the die joint of lower mould (302) extended, just the one end of cutting edge (5) with the blade meets.

5. The butt mold for sealing strips according to claim 1, wherein: each group of the die split bodies further comprises an upper mounting piece (304) for mounting the upper die (301) and a lower mounting piece (305) for mounting the lower die (302); the lower die (302) comprises a rear cavity block (3021) and a front lower cavity block (3022) mounted on the lower mount (305), and further comprises a front upper cavity block (3023) mounted on the front lower cavity block (3022), and the upper die (301), the rear cavity block (3021), the front lower cavity block (3022) and the front upper cavity block (3023) together form the cavity (303).

6. The weatherstrip mating mold according to claim 5, wherein: the rear cavity block (3021) is mounted on the lower mounting piece (305) through a shoulder bolt (306) which is vertically arranged, and the front lower cavity block (3022) is rotatably connected to the lower mounting piece (305) through a pivot shaft which is parallel to the length direction of the sealing strip split body.

7. The butt mold for sealing strips according to claim 1, wherein: the utility model discloses a sealing strip split type sealing strip, including last mould (301) and lower mould (302), be equipped with the slip guide structure between last mould (301) and lower mould (302), the slip guide structure constitutes last mould (301) with the edge of lower mould (302) the direction of sealing strip components of a whole that can function independently length direction relative slip, just the slip guide structure including the shaping in lower spigot surface (702) on lower mould (302) and match in lower spigot surface (702), form in last spigot surface (701) on last mould (301).

8. The weather strip butt mold according to any one of claims 1 to 7, wherein: and a positioning guide mechanism is arranged between the two groups of the die split bodies, the guide mechanism forms a guide for communicating the two cavities (303), and the positioning guide mechanism comprises a conical positioning hole (801) formed on one of the die split bodies and a conical positioning pin (802) matched with the conical hole and formed on the other die split body.