CN218399386U

CN218399386U - Strong integration blowing equipment of leakproofness

Info

Publication number: CN218399386U
Application number: CN202222607811.0U
Authority: CN
Inventors: 董荣康
Original assignee: Ningguo Singularity Plastic Products Co ltd
Current assignee: Ningguo Singularity Plastic Products Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-31
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a strong integration blowing equipment of leakproofness, including bottom plate, fixed die plate subassembly and compound die operation subassembly, the upper end both sides of bottom plate are provided with the fixed die plate subassembly, the upper end of bottom plate is provided with the lifter all around, and the upper end top of lifter is provided with the backup pad, the inboard both ends of backup pad are provided with compound die operation subassembly, compound die operation subassembly includes cope match-plate pattern, protruding mould, seal ring, can promote the cardboard, annotate material blowing mouth of pipe and cardboard notch. This strong integration blowing equipment of leakproofness adopts the mode of oscilaltion to carry out the compound die operation, utilizes under the cooperation of the spacing under vertical lifter and the horizontality, realizes the cooperation of the accurate position of compound die in-process, utilizes the hollow channel in the lower bolster, makes the blowing piece take place to cool off fixedly in advance to at the cardboard notch of prominent state, can make the goods adhesion under the cope match-plate pattern, be convenient for can promote the cardboard ejecting through in the cardboard notch.

Description

Strong integration blowing equipment of leakproofness

Technical Field

The utility model relates to a blowing equipment technical field specifically is a strong integration blowing equipment of leakproofness.

Background

Blow molding plants are nowadays a type of plastic processing machine. After the liquid plastic is sprayed, the plastic is blown to a mold cavity with a certain shape by the wind force blown out by a machine, so as to manufacture a product, the machine is called a blow molding device, a tubular plastic parison obtained by extruding or injection molding thermoplastic resin is placed in a split mold while the parison is hot (or heated to a softened state), compressed air is introduced into the parison immediately after the mold is closed, so that the plastic parison is blown to cling to the inner wall of the mold, and various hollow products are obtained after cooling and demolding.

The existing blow molding equipment is easy to cause the situation that the sealing position is not tight enough when blow molding is carried out, the deviation of the mold closing position is easy to occur in the mold closing process of a template, so that the leakage situation is easy to occur at the molding inner cavity of the mold, and when a molded blow molding product is taken out, the molded blow molding product is easy to attach to the cavity of the mold, the taking-out of the product is influenced, and the production time is prolonged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a strong integration blowing equipment of leakproofness to solve the current blowing equipment that provides among the above-mentioned background art when carrying out the blowing, the not inseparable condition of sealed department appears easily, carry out the compound die in-process at the template, the deviation of compound die position department appears easily, lead to mould shaping inner chamber department to appear the condition of leaking easily, and when taking out at fashioned blowing product, attached in the cavity of mould easily, influence taking out of product, can increase the problem of length when producing.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a strong integration blowing equipment of leakproofness, includes bottom plate, fixed die plate subassembly and compound die operation subassembly, the upper end both sides of bottom plate are provided with the fixed die plate subassembly, the upper end of bottom plate is provided with the lifter all around, and the upper end top of lifter is provided with the backup pad, the inboard both ends of backup pad are provided with compound die operation subassembly, compound die operation subassembly includes cope match-plate pattern, last die cavity, protruding mould, seal ring, can promote the cardboard, annotate material blowing mouth of pipe and cardboard notch, the inside die cavity that is provided with of lower extreme of cope match-plate pattern, and the lower extreme middle part of going up the die cavity is provided with protruding mould, the lower extreme outer lane of cope match-plate pattern is provided with seal ring, the cardboard notch has been seted up to the inside both sides of cope match-plate pattern, and the inboard department of cardboard notch is provided with can the cardboard and promotes, the inside both ends of protruding mould are provided with annotate the material blowing mouth of pipe, the outside department of lifter is fixed with the locating rack, the vertical monitoring image device that is provided with in the upper end middle part of bottom plate.

Further, the fixed die plate assembly comprises a lower die plate, a cooling liquid conveying pipe, a hollow channel and a lower die cavity, the cooling liquid conveying pipe is symmetrically arranged at the outer side of the lower die plate, the hollow channel is arranged around the inside of the lower die plate, the lower die cavity is formed in the middle end of the inside of the lower die plate, and a vibrating motor is arranged at the outer side of the lower die plate.

Furthermore, the hollow channel is distributed in a hollow shape, and the hollow channel and the lower die cavity are distributed in a wrapping shape.

Furthermore, the cooling liquid conveying pipe and the hollow channel are communicated with each other, the lower template is symmetrically distributed along the central axis of the bottom plate, and the lower template is provided with two groups.

Furthermore, the limiting frame comprises a limiting groove and a through groove, the limiting groove is formed in two sides of the inside of the limiting frame, and the through groove is formed in the middle end of the inside of the limiting frame.

Furthermore, the limiting frame is connected with the upper die plate in a plugging and unplugging mode through the limiting groove, the size of the limiting groove is matched with that of the upper die plate, and the monitoring image device is matched with the upper position and the lower position of the through groove.

Furthermore, the bottom plate passes through to constitute transmission structure between lifter and the backup pad, and is the parallel form distribution between bottom plate and the backup pad, fixed die plate subassembly and cope match each other in position from top to bottom.

Further, the cardboard notch is arranged form and is distributed along the axis department of last die cavity, and the cardboard notch is provided with eight groups, the cardboard notch with can promote to constitute the plug between the cardboard and connect.

Furthermore, the clamping plate notch is distributed in a concave shape, the clamping plate notch and the protruding mold are fixedly connected, and the injection blow molding pipe orifice is distributed in a symmetrical shape along the central axis of the protruding mold.

Compared with the prior art, the beneficial effects of the utility model are that: this strong integration blowing equipment of leakproofness, adopt mutually supporting between a plurality of mechanisms, it is functional strong, the mode that adopts the oscilaltion carries out the compound die operation, utilize under the cooperation of the spacing of vertical lifter and horizontality, realize the accurate position cooperation of compound die in-process, and utilize the hollow channel in the lower bolster, can make the blowing piece take place to cool off fixedly in advance, and be the cardboard notch of prominent state in the upper end, can make the goods adhesion under the cope match-plate pattern, it is ejecting to be convenient for can promote the cardboard through in the cardboard notch, the auxiliary production operating efficiency.

1. The utility model discloses, the fixed die plate subassembly includes lower bolster, coolant liquid defeated pipe, hollow passageway and lower die cavity, the outside department symmetry of lower bolster is provided with coolant liquid defeated pipe, the inside of lower bolster is provided with hollow passageway all around, and the inside middle-end of lower bolster has seted up the die cavity down, the outside department of lower bolster is provided with vibrating motor, hollow passageway inside is the hollow form and distributes, and be the distribution of parcel form between hollow passageway and the die cavity down, communicate each other between coolant liquid defeated pipe and the hollow passageway, and the lower bolster is the symmetrical form along the axis department of bottom plate and distributes, and the lower bolster is provided with two sets of, adopt the bottom plate as the bearing structure of this integration blowing equipment, utilize the fixed die plate subassembly of bottom plate upper end duplex position, guarantee the high efficiency of blowing production, and cooperate the monitoring image device of the vertical state of middle-end department, can observe the blow molding article of both sides, ensure the shaping quality degree of blow molding article, so that the user can long-rangely observe the blow molding article, so that in time handle, adopt modular lower bolster in the fixed die plate assembly in addition, department is provided with hollow channel all around at the lower bolster, the mode of usable direct transmission, contact with lower die cavity, when needs are handled the inboard blow molding article of lower die cavity, can be with microthermal liquid transmission to hollow channel in through the coolant liquid defeated pipe, cool down to lower die cavity blow molding article rapidly all around from, when needs are moulded plastics, can directly extract in the hollow channel liquid directly, guarantee the normal atmospheric temperature form of this mould, make the blow molding article shaping solidification faster, very big assurance production efficiency.

2. The utility model discloses, with the bottom plate, lifter and backup pad are as this blowing equipment's main exterior structure, its junction utilizes the lifter to drive the backup pad and goes up and down the operation, and through the lifter under the vertical state of department all around, when making the backup pad can carry out horizontal lift operation, and coordinate spacing under the fixed state, utilize spacing inside both ends to seted up the spacing groove, can make spacing groove and lower template size cooperate, thereby the accuracy nature of compound die in-process from top to bottom, in addition still through the vibrating motor of lower bolster outside department, when making plastic raw materials enter into the die cavity, can make plastic raw material distribute more evenly, raw material distribution is more stable in making toolbox plastic products, the effective of the follow-up blowing operation of being convenient for.

3. The utility model discloses a bottom plate, fixed die plate subassembly and compound die operation subassembly, the upper end both sides of bottom plate are provided with the fixed die plate subassembly, the upper end of bottom plate is provided with the lifter all around, and the upper end top of lifter is provided with the backup pad, the inboard both ends of backup pad are provided with the compound die operation subassembly, the compound die operation subassembly includes the cope match-plate pattern, protruding mould, seal ring, can promote the cardboard, notes material blowing mouth of pipe and cardboard notch, the lower extreme inside of cope match-plate pattern is provided with the cope match-plate pattern, and the lower extreme middle part of cope match-plate pattern is provided with protruding mould, the lower extreme outer lane of cope match-plate pattern is provided with seal ring, the inside both sides of cope match-plate pattern have seted up the cardboard notch, and the inboard department of cardboard notch is provided with can promote the cardboard, the inside both ends of protruding mould are provided with notes material blowing mouth of pipe, fixed die plate subassembly and cope match-plate pattern notch are provided with each other, and can promote the connection between cardboard notch, the cardboard notch is the sunken distribution, and can make the cardboard connect the usable mould when the plastic product of the lower mould cavity of the mould, and can be connected in the lower mould cavity, and can be separated in the lower mould cavity, and can be carried out on the mould cavity, can make the mould of the mould, the mould cavity, can be connected when the plastic separation of the mould cavity, can make the mould cavity, make the mould assembly, make transmission device and toolbox plastic products position from top to bottom correspond each other, later control can promote the lift transmission of cardboard, can make and promote the cardboard and slide in the cardboard notch to ejecting from last mould cavity with toolbox plastic products, thereby making toolbox plastic products drop on transmission device, transport the processing, guarantee subsequent processing's high efficiency.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a blow molding apparatus with high sealing performance according to the present invention;

fig. 2 is a schematic top view of the fixed die plate assembly of the blow molding apparatus with high sealing performance according to the present invention;

fig. 3 is a schematic structural view of a second embodiment of the blow molding apparatus with high sealing performance according to the present invention;

fig. 4 is a schematic structural view of a third embodiment of the blow molding device with high sealing performance according to the present invention;

fig. 5 is a schematic view of a partially enlarged structure of a mold closing operation assembly of the strongly-sealed integrated blow molding device of the present invention;

fig. 6 is a schematic view of the structure of the mold closing assembly of the blow molding apparatus with high sealing performance;

fig. 7 is the utility model discloses a structural schematic is overlooked to spacing frame of strong integration blowing equipment of leakproofness.

In the figure: 1. a base plate; 2. a fixed die plate assembly; 201. a lower template; 202. a coolant delivery tube; 203. a hollow channel; 204. a lower die cavity; 3. a vibration motor; 4. monitoring the image device; 5. a limiting frame; 501. a limiting groove; 502. a through groove; 6. a lifting rod; 7. a support plate; 8. a mold closing operation component; 801. mounting a template; 802. an upper mold cavity; 803. a raised mold; 804. a sealing gasket; 805. the clamping plate can be pushed; 806. injecting and blowing a pipe orifice; 807. a card slot.

Detailed Description

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-7, the utility model provides a technical solution: a blow molding device with strong integration of sealing performance comprises a bottom plate 1, fixed template components 2 and die assembly operation components 8, wherein the fixed template components 2 are arranged on two sides of the upper end of the bottom plate 1, lifting rods 6 are arranged on the periphery of the upper end of the bottom plate 1, a supporting plate 7 is arranged at the top of the upper end of each lifting rod 6, the die assembly operation components 8 are arranged at two ends of the inner side of each supporting plate 7, each die assembly operation component 8 comprises an upper template 801, an upper cavity 802, a raised mold 803, a sealing gasket 804, a push clamping plate 805, an injection blow molding pipe orifice 806 and a clamping plate notch 807, an upper cavity 802 is arranged inside the lower end of the upper template 801, the raised mold 803 is arranged in the middle of the lower end of the upper cavity 802, the sealing gasket 804 is arranged on the outer ring of the lower end of the upper template 801, clamping plate notches 807 are arranged on two sides inside the upper cavity 802, and the push clamping plate 805 is arranged at the inner sides of the clamping plate notches 807, the two ends of the interior of the raised mold 803 are provided with material injection blow molding pipe orifices 806, the outer side of the lifting rod 6 is fixed with a limiting frame 5, the middle part of the upper end of the bottom plate 1 is vertically provided with a monitoring image device 4, the fixed template component 2 comprises a lower template 201, a cooling liquid conveying pipe 202, a hollow channel 203 and a lower mold cavity 204, the outer side of the lower template 201 is symmetrically provided with the cooling liquid conveying pipe 202, the periphery of the interior of the lower template 201 is provided with the hollow channel 203, the middle end of the interior of the lower template 201 is provided with the lower mold cavity 204, the outer side of the lower template 201 is provided with a vibration motor 3, the interior of the hollow channel 203 is distributed in a hollow shape, the hollow channel 203 and the lower mold cavity 204 are distributed in a wrapping shape, the cooling liquid conveying pipe 202 and the hollow channel 203 are communicated with each other, the lower template 201 is distributed in a symmetrical shape along the central axis of the bottom plate 1, and the lower template 201 is provided with two groups, the limiting frame 5 comprises a limiting groove 501 and a through groove 502, the two sides of the inner part of the limiting frame 5 are provided with limiting grooves 501, the middle end of the inner part of the limiting frame 5 is provided with a through groove 502, the limiting frame 5 is connected with the upper template 801 in a plugging manner through the limiting groove 501, the size of the limiting groove 501 is matched with that of the upper template 801, the monitoring image device 4 is matched with the upper position and the lower position of the through groove 502, the bottom plate 1 is connected with the supporting plate 7 through a lifting rod 6 to form a transmission structure, the bottom plate 1 is distributed with the supporting plate 7 in a parallel manner, the fixed template component 2 is corresponding to the upper position and the lower position of the upper template 801, the card board notches 807 are distributed in an arrangement manner along the central axis of the upper cavity 802, eight groups of card board notches 807 are arranged, the card board notches are connected with the pushing card board 805 in a plugging manner, the card board notches 807 are distributed in a concave manner, the card board notches 807 are fixedly connected with the convex mold 803, and the injection blow molding pipe orifices 806 are distributed in a symmetrical manner along the central axis of the convex mold 803, the high efficiency of blow molding production is ensured by utilizing the fixed template component 2 with double stations at the upper end of the bottom plate 1, and the monitoring image device 4 in a vertical state at the middle end is matched to observe the blow molding products at two sides and ensure the molding quality of the blow molding products, so that a user can remotely observe the blow molding products to process the blow molding products in time, in addition, the fixed template component 2 adopts the modularized lower template 201, hollow channels 203 are arranged at the periphery of the lower template 201 and can be in contact with the lower mold cavity 204 in a direct transmission mode, when the blow molding products at the inner side of the lower mold cavity 204 need to be processed, low-temperature liquid can be transmitted into the hollow channels 203 through the cooling liquid transmission pipe 202, the blow molding products in the lower mold cavity 204 can be rapidly cooled from the periphery, and when injection molding is needed, the liquid in the hollow channels 203 can be directly extracted, the normal temperature shape of the mould is ensured, the molding and curing of the blow-molded product are quicker, the production efficiency is greatly ensured, the bottom plate 1, the lifting rod 6 and the support plate 7 are used as main external structures of the blow-molding equipment, the lifting rod 6 is utilized to drive the support plate 7 to carry out lifting operation at the joint of the bottom plate and the support plate, the lifting rod 6 in the vertical state at the periphery is utilized, when the support plate 7 can carry out horizontal lifting operation, the limiting frame 5 in the fixed state is matched, the limiting grooves 501 are formed at two ends in the limiting frame 5, the limiting grooves 501 can be matched with the size of the lower template 201, so that the accuracy in the up-and-down die assembly process is improved, in addition, the vibration motor 3 at the outer side of the lower template 201 is utilized to ensure that the plastic raw materials are more uniformly distributed when entering the die cavity, the raw materials in the tool box plastic product are more stably distributed, the effective performance of the subsequent blow-molding operation is facilitated, the upper template 801 is used as a lifting operation part and can drive the upper cavity 802 on the inner side to move downwards, a sealing washer 804 on the bottom wall of the upper template 801 can be used during mold closing to ensure the connection tightness of the connection part of the upper template 801 and the lower template 201, during blow molding, a plastic product can be formed into a required state in the upper cavity 802 and can be partially condensed in a clamping plate notch 807 of the upper cavity 802, during separation, the plastic product of the tool box can be hung on the upper template 801 to be synchronously separated, during separation, a transmission device can be moved to the gap between the upper template 801 and the lower template 201 to enable the transmission device and the plastic product of the tool box to correspond to each other in the up-and-down position, then the lifting transmission capable of pushing the clamping plate 805 can be controlled to push the clamping plate to slide in the clamping plate notch 807, so that the plastic product of the tool box can be ejected out of the upper cavity 802, thereby make toolbox plastic products drop on transmission device, transport the processing, guarantee the high efficiency of subsequent processing.

To sum up, the blow molding device with strong sealing performance is used, firstly, the lifting rods 6 around the outer side are controlled to drive the supporting plate 7 to carry out lifting operation in the horizontal direction, the supporting plate 7 drives the upper template 801 to be embedded on the lower mold cavity 204 of the lower template 201 gradually, the limiting frame 5 in a fixed state is matched, the limiting grooves 501 are formed in two ends inside the limiting frame 5, the limiting grooves 501 can be matched with the size of the lower template 201, so that the accuracy in the up-and-down mold closing process is improved, in addition, the vibration motor 3 at the outer side of the lower template 201 is used for starting the vibration motor 3 with the model of XJD-30-4, then the injection material is injected into the lower mold cavity 204 and the upper mold cavity 802 through the injection material blow molding pipe orifice 806, and when plastic raw materials enter the mold cavity under the action of the vibration motor 3, the plastic raw materials can be distributed more uniformly, then, the low-temperature liquid can be transmitted into the hollow channel 203 through the cooling liquid transmission pipe 202, the blow molding product in the lower mold cavity 204 is rapidly cooled from the periphery, when the injection molding is needed, the liquid in the hollow channel 203 can be directly extracted, the normal temperature state of the mold is ensured, the blow molding product is more rapidly molded and solidified, the plastic product can be molded into a state needed by a tool box in the upper mold cavity 802, and part of the product can be condensed in a clamping plate notch 807 of the upper mold cavity 802, then the supporting plate 7 is gradually moved upwards through the lifting of the peripheral lifting rods 6, the tool box plastic product can be hooked on the upper mold plate 801 to be synchronously separated, when the separation operation is carried out, the transmission device can be moved to the gap between the upper mold plate 801 and the lower mold plate 201, the vertical positions of the transmission device and the tool box plastic product are mutually corresponding, then the lifting transmission of the clamping plate 805 can be pushed under the control, can make and to promote cardboard 805 and slide in cardboard notch 807 to ejecting toolbox plastic products from last die cavity 802, thereby making toolbox plastic products drop on transmission device, carry out the transfer processing through conveyor, guarantee the high efficiency of subsequent processing, accomplish whole blow molding flow.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements are also considered to be within the scope of the invention.

Claims

1. The blow molding equipment with strong sealing performance comprises a bottom plate (1), fixed template assemblies (2) and die assembly operation assemblies (8), and is characterized in that the fixed template assemblies (2) are arranged on two sides of the upper end of the bottom plate (1), lifting rods (6) are arranged on the periphery of the upper end of the bottom plate (1), a supporting plate (7) is arranged at the top of the upper end of each lifting rod (6), the die assembly operation assemblies (8) are arranged at two ends of the inner side of the supporting plate (7), each die assembly operation assembly (8) comprises an upper template (801), an upper die cavity (802), a raised die (803), a sealing washer (804), a push clamping plate (805), an injection blow molding pipe orifice (806) and a clamping plate notch (807), an upper die cavity (802) is arranged inside the lower end of the upper template (801), the raised die (803) is arranged in the middle of the lower end of the upper die cavity (802), the sealing washer (804) is arranged on the outer ring of the lower end of the upper template (801), the clamping plate notch (802) is provided with the sealing washer (807), the clamping plate notch (805), the inner side of the clamping plate notch (803) is provided with the push plate notch (805), the limited blow molding frame (806), and the lifting rods (5) are arranged at two ends of the blow molding frame (806), and a monitoring image device (4) is vertically arranged in the middle of the upper end of the bottom plate (1).

2. The blow molding apparatus with high sealing performance as claimed in claim 1, wherein: the fixed template component (2) comprises a lower template (201), a cooling liquid conveying pipe (202), hollow channels (203) and a lower die cavity (204), the cooling liquid conveying pipe (202) is symmetrically arranged at the outer side of the lower template (201), the hollow channels (203) are arranged around the inner portion of the lower template (201), the lower die cavity (204) is formed in the inner middle end of the lower template (201), and a vibrating motor (3) is arranged at the outer side of the lower template (201).

3. The blow molding apparatus with high sealing performance as claimed in claim 2, wherein: the hollow channel (203) is distributed in a hollow shape, and the hollow channel (203) and the lower die cavity (204) are distributed in a wrapping shape.

4. The blow molding device with high sealing performance as claimed in claim 2, wherein: the cooling liquid conveying pipe (202) is communicated with the hollow channel (203), the lower template (201) is symmetrically distributed along the central axis of the bottom plate (1), and the lower template (201) is provided with two groups.

5. The blow molding apparatus with high sealing performance as claimed in claim 1, wherein: the limiting frame (5) comprises a limiting groove (501) and a through groove (502), the limiting groove (501) is formed in two sides of the inner portion of the limiting frame (5), and the through groove (502) is formed in the middle end of the inner portion of the limiting frame (5).

6. The blow molding device with high sealing performance as claimed in claim 5, wherein: spacing (5) constitute the plug between spacing groove (501) and cope match-plate pattern (801) and are connected, and size is mutually supported between spacing groove (501) and cope match-plate pattern (801), position is mutually supported about monitoring image device (4) and through groove (502).

7. The blow molding apparatus with high sealing performance as claimed in claim 1, wherein: the bottom plate (1) is in a transmission structure through the lifting rod (6) and the support plate (7), the bottom plate (1) and the support plate (7) are distributed in a parallel mode, and the upper position and the lower position of the fixed template assembly (2) and the upper template (801) correspond to each other.

8. The blow molding device with high sealing performance as claimed in claim 1, wherein: cardboard notch (807) are along the axis department of last die cavity (802) and are arranged the form and distribute, and cardboard notch (807) are provided with eight groups, constitute plug connection between cardboard notch (807) and the promotion cardboard (805).

9. The blow molding device with high sealing performance as claimed in claim 1, wherein: cardboard notch (807) are sunken form and distribute, and constitute fixed connection between cardboard notch (807) and protruding mould (803) to annotate material blowing mouth of pipe (806) and be the symmetrical form along the axis department of protruding mould (803) and distribute.