CN215882004U - Jacking contraction type flue forming die - Google Patents

Abstract

The utility model relates to a jacking and contracting type flue forming die, and belongs to the technical field of flue equipment. The inner die assembly is placed in the outer die assembly; the die heads are sleeved at two ends of the inner die assembly; the bottom end of the outer die assembly is provided with a power-assisted assembly, the power-assisted assembly is connected with the outer die assembly through a connecting assembly, and the power-assisted assembly is used for assisting the outer die assembly to open and close; the upper template and the lower template are in a shape of Gamma, the left template is in a shape of Gamma, the right template is in a shape of reversed L, and the corners of the left template and the right template can be set to be chamfers or fillets; the upper template, the left template, the right template and the lower template are combined into a □ shape after being stretched. According to the utility model, the upper template of the inner mold is set into a flat plate without flanging, when the inner mold extends outwards, the upper template is in butt joint fit with the left template and the right template at the upper end surfaces, the fit contact area is large, so that the fit sealing effect of the upper template, the left template and the right template is good, slurry leakage is not easy to occur during production, the inner mold template is not easy to deform when the inner mold is unfolded, and the quality of a produced product is more ensured.

Description

Jacking contraction type flue forming die

Technical Field

The utility model relates to a jacking and contracting type flue forming die, and belongs to the technical field of flue equipment.

Background

The existing flue mould is like a 'flue gas channel vibrating casting machine with a telescopic inner mould with two panels' disclosed in Chinese patent CN 106142332B, wherein a forming mechanism of the inner mould mechanism is composed of an upper panel and a lower panel, the upper panel is in a shape of a straight line, the left end and the right end of the upper panel are flanged downwards, the lower panel is bent into a front surface, a rear surface and a bottom surface 3 by one panel to be in a shape of a U, the tops of the left end plate and the right end plate are flanged inwards to form movable fit with the flanged part of the upper panel, and a contraction mechanism in the inner mould mechanism realizes the contraction and expansion of the inner mould by a pair of left-handed nuts, right-handed nuts and a plurality of groups of pull rods. Thereby realize the centre form and expand through the nut to the pull rod pulling when the above current mould centre form expandes, left and right two end plate's top and top panel both ends portion can take place outside and upwards warp when constituting the clearance fit when too big and use number of times of applying, the cement pipeline wall thickness that leads to producing is not enough, the product quality who leads to producing reduces, the top panel left and right both ends decurrent turn-ups and the lower panel left and right, the turn-ups inwards of the top of two end plates of the right side can produce when sealed badly when the cooperation contact area is little can lead to leaking the thick liquid.

SUMMERY OF THE UTILITY MODEL

The utility model provides a jacking and contracting type flue forming die aiming at the defects.

The utility model adopts the following technical scheme:

the jacking and contracting type flue forming die comprises an outer die assembly, an inner die assembly and a die head, wherein the outer die assembly comprises an outer die plate assembly, a connecting assembly and a power-assisted assembly; the inner die assembly is placed in the outer die assembly; the die heads are sleeved at two ends of the inner die assembly; the bottom end of the outer die assembly is provided with a power-assisted assembly, the power-assisted assembly is connected with the outer die assembly through a connecting assembly, and the power-assisted assembly is used for assisting the outer die assembly to open and close;

the inner die assembly comprises an inner die plate assembly and an inner die retracting and expanding mechanism; an inner die plate group is arranged on the outer side of the inner die retracting and expanding mechanism; the inner template group is arranged on the inner template folding and unfolding mechanism in a surrounding manner; the internal mold retracting and expanding mechanism is driven by an external driving device to act, and drives the internal mold plate component to fold inwards or extend outwards through the internal mold retracting and expanding mechanism;

the inner template assembly comprises an upper template, a lower template, a left template and a right template; the upper template, the lower template, the left template and the right template surround to form a rectangular wide flue mold;

the upper template and the lower template are in a shape of a square, the left template is in a shape of a square, the right template is in a shape of a reversed square, and corners of the left template and the right template can be provided with chamfers or fillets; the upper template, the left template, the right template and the lower template are combined into an □ shape after being stretched.

The utility model relates to a jacking and contracting type flue forming die.A retraction and expansion mechanism of an inner die comprises a supporting seat plate, a guide sleeve, a lead screw assembly, an upper die plate supporting assembly, a sliding block, a pull rod and a side die plate retraction and expansion mechanism; the supporting seat plates are fixedly connected with the lower template, and a plurality of groups of supporting seat plates are arranged along the extension direction of the lower template; the upper end of the supporting seat plate is fixed with a guide sleeve, a sliding block is arranged in the supporting seat plate, a lead screw assembly is arranged in the guide sleeve on the supporting seat plate, a plurality of pull rods are arranged on the upper side of the lead screw assembly, the lead screw assembly is mutually connected with the upper template supporting assembly through the pull rods, side template retracting and releasing mechanisms are also arranged on two sides of the lead screw assembly, and the side template retracting and releasing mechanisms are mutually connected with a left template in a shape of a Chinese character and a right template in a shape of a Chinese character chi; the cope plate support assembly is for mounting a "-" shaped cope plate.

The jacking contraction type flue forming die comprises a screw rod, a screw rod nut, a square tube, a pin shaft, a limiting nut and a limiting plate, wherein the screw rod assembly comprises a screw rod, a screw rod nut, a square tube, a pin shaft, a limiting nut and a limiting plate; the screw rod is a positive and negative screw rod, the positive and negative teeth of the screw rod are respectively provided with a screw rod nut, the square tube is sleeved on the screw rod nut, the limiting nut is fixed in the middle of the screw rod, and the upper end of the square tube is respectively fixed with a plurality of pin shafts; the limiting plate is positioned in the middle of the lower template, the upper end of the limiting plate is provided with a limiting nut, and the junction of the orthodontic section and the anti-tooth section of the screw rod is arranged in the limiting nut and fixedly connected with the limiting nut.

The jacking and contracting type flue forming die comprises an upper die plate supporting assembly, a lower die plate supporting assembly and a lower die plate supporting assembly, wherein the upper die plate supporting assembly comprises a longitudinal frame, a pin shaft, a pull rod and an optical axis; the upper template is arranged on the longitudinal frame; the longitudinal frame is provided with a plurality of pin shafts which are transversely arranged; a plurality of optical axes vertical to the longitudinal frame are arranged on the lower end face of the longitudinal frame, and the optical axes are in sliding fit with the sliding blocks on the bearing seat plate; one end of the pull rod is hinged with the longitudinal frame through a pin shaft, and the other end of the pull rod is hinged with a pin shaft fixed at the upper end of the square tube;

when the inner die assembly extends outwards to a proper position, the upper die plate in the inner die assembly is in butt joint with the left die plate and the right die plate, the upper die plate in the inner die assembly is embedded and pressed to the upper end face of the longitudinal frame, and the upper die plate is flush with the upper end faces of the left die plate and the right die plate.

The jacking retractable flue forming die comprises a side template retracting mechanism, a side template retracting mechanism and a side template pushing mechanism, wherein the side template retracting mechanism comprises a U-shaped push-pull plate, an L-shaped pull rod, a pin shaft, a shaft sleeve, a locking nut and a tension spring; the opening part of the U-shaped push-pull plate is fixedly connected with the longitudinal frame, the U-shaped push-pull plate is perpendicular to the longitudinal frame, and a rectangular through hole is formed below the U-shaped push-pull plate, which is far away from the opening part; the L-shaped pull rods are positioned at two sides of the U-shaped push-pull plate, pin shafts are respectively arranged at the middle part and two ends of each L-shaped pull rod, the middle part of each L-shaped pull rod is hinged with the supporting seat plate through the pin shaft, the pin shaft at the bottom end of each L-shaped pull rod extends into the rectangular through hole of the U-shaped push-pull plate, a shaft sleeve is sleeved on the pin shaft at the bottom end of each L-shaped pull rod, and the top ends of the L-shaped pull rods at the two sides of the U-shaped push-pull plate are respectively hinged with the left template and the right template through the pull rods;

the guide sleeve is also provided with a pin shaft, one end of a tension spring is connected with the bottom end of the L-shaped pull rod, and the other end of the tension spring is connected with the upper pin shaft of the guide sleeve.

The jacking retractable flue forming die further comprises a push rod, a connecting lug plate and a roller; both ends of the push rod are provided with trapezoidal groove structures; the push rod is longitudinally provided with a plurality of connecting lug plates which are longitudinally arranged along the screw rod assembly and fixed on the screw rod assembly, and the inner side surfaces of the left template and the right template are respectively provided with a plurality of connecting lug plates which are longitudinally arranged; each connecting lug plate is provided with a pin shaft, and the pin shaft is provided with a roller;

when the left template and the right template are in an open state, two ends of the push rod are respectively abutted against the rollers;

when the left template and the right template are in a furled state, two ends of the push rod are respectively separated from the roller.

According to the jacking and contracting type flue forming die, grooves which are consistent along the extending direction of the template are arranged on the outer edge surface of the upper template or the lower template or the left template or the right template in the inner die assembly; the groove is of a whole section type or a multi-section type.

The utility model relates to a jacking and contracting type flue forming die.A outer template assembly comprises a left side panel, a right side panel and a bottom side panel;

the connecting assembly comprises a connecting lug plate, a rotating block, a transverse adjusting screw rod and a locking nut;

the power assisting assembly comprises a gas spring, a compression spring and a connecting lug plate;

the two side edges of the extending direction of the bottom side panel are respectively provided with a left side panel and a right side panel; the two side ends of the bottom side panel are respectively provided with a connecting lug plate; a rotatable rotating block is arranged on the connecting lug plate, and one end of the rotating block is fixed with the left side panel or the right side panel through a transverse adjusting screw rod;

the connecting lug plate is fixed at the bottom side of the bottom side panel, the gas spring is arranged at the bottom end of the bottom side panel, one end of the gas spring is connected with the rotating block, the other end of the gas spring is hinged with the connecting lug plate at the bottom side of the bottom side panel, a compression spring is arranged on the gas spring, and the compression spring is sleeved on a telescopic rod of the gas spring; and a locking nut is arranged on the transverse adjusting screw rod.

According to the jacking and contracting type flue forming die, pulleys or directional wheels are further arranged on the lower side of the bottom side panel in the outer panel assembly; the top of left side panel and right side panel is equipped with the couple pull rod and the couple that are used for cooperating the external mold plate subassembly to open and shut respectively.

According to the jacking contraction type flue forming die, when an upper die plate in an inner die plate assembly is matched with a left die plate and a right die plate, the upper die plate, the left die plate and the right die plate are chamfered at the matching interface; the matching interfaces of the upper template, the left template and the right template are guide plates; and the left template and the right template in the inner template assembly are connected with the lower template through hinges or welding.

Advantageous effects

According to the jacking retractable flue forming die, the upper die plate of the inner die is set to be a flat plate without flanging, when the inner die extends outwards, the upper die plate is in butt joint fit with the left die plate and the right die plate on the upper end faces, the fit contact area is large, so that the fit sealing effect of the upper die plate, the left die plate and the right die plate is good, slurry leakage is not easy to occur during production, the inner die plate is not easy to deform when the inner die is expanded, and the quality of a produced product is more guaranteed.

Drawings

FIG. 1 is a front view of a jacking retractable flue forming mold according to the present invention;

FIG. 2 is an isometric view of a jacking retractable flue forming die of the present invention;

FIG. 3 is an expanded front view of an inner mold plate assembly of a jacking-retractable flue forming mold of the present invention;

FIG. 4 is an isometric view of an expanded inner template assembly of the jacking-contracting flue forming die of the present invention;

FIG. 5 is a schematic view of the internal structure of an internal mold assembly of the jacking-contracting type flue forming mold of the present invention;

FIG. 6 is a schematic structural view of a side formwork retracting mechanism of the jacking retractable flue forming mold according to the present invention;

FIG. 7 is a schematic structural view of an inner mold plate assembly of the jacking-contracting type flue forming mold when being folded;

fig. 8 is a schematic structural view of an outer mold assembly of the jacking-contracting type flue forming mold.

FIG. 9 is a schematic diagram of chamfering an upper mold plate and a left mold plate of a jacking-up retractable flue forming mold according to the present invention;

FIG. 10 is a schematic diagram of a top mold plate and a left mold plate right mold plate chamfer fit of a jacking-contracting type flue forming mold according to the present invention;

FIG. 11 is a schematic diagram of a structure of a guide plate arranged on an upper template and a right template of a left template of the jacking-up and contracting type flue forming mold according to the utility model;

fig. 12 is a schematic diagram of the cooperation of the upper mold plate and the left and right mold plate guide plates of the jacking-contracting type flue forming mold of the utility model.

Detailed Description

In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.

As shown in fig. 1 and 2: the utility model provides a jacking contraction type flue forming die which comprises an outer die component 1, an inner die component 2 and a die head 3, wherein the inner die component 2 is placed in the outer die component 1, the die head 3 is sleeved at two ends of the inner die component 2, the outer die component 1 comprises an outer template component 4, a connecting component 5 and a power assisting component 6, the inner die component 2 comprises an inner template component 7 and an inner die folding and expanding mechanism 8, and the outer side of the inner die folding and expanding mechanism 8 is provided with the inner template component 7; the inner template component 7 is arranged around the inner template folding and unfolding mechanism 8 in a surrounding manner; the internal mold contracting and expanding mechanism 8 is driven by an external driving device to act, and the internal mold plate component 7 is driven by the internal mold contracting and expanding mechanism 8 to fold inwards or extend outwards.

As shown in fig. 3: the inner template assembly 7 comprises an upper template 9, a lower template 10, a left template 11 and a right template 12; the upper template 9, the lower template 10, the left template 11 and the right template 12 surround to form a rectangular wide flue inner mold. The upper die plate 9 and the lower die plate 10 are in a shape of a reversed-L, the left die plate 11 is in a shape of a Gamma, the right die plate 12 is in a shape of a reversed-L, the corners of the left die plate 11 and the right die plate 12 can be set to be chamfers or fillets, the upper die plate 9, the left die plate 11, the right die plate 12 and the lower die plate 10 are combined into a shape of □ after being stretched, and the left die plate 11, the right die plate 12 and the lower die plate 10 are connected through a hinge or welding.

As shown in fig. 5: the inner mold tensioning and retracting mechanism 8 is longitudinally provided with a plurality of groups along the inner mold plate assembly 7, the inner mold tensioning and retracting mechanism 8 comprises a supporting seat plate 13, a guide sleeve 14, a screw rod assembly 15, an upper mold plate supporting assembly 16, a sliding block 17, a pull rod 18 and a side mold plate retracting and releasing mechanism 19, the supporting seat plate 13 is fixedly connected with the lower mold plate 10, the guide sleeve 14 is fixed at the upper end of the supporting seat plate 13, the sliding block 17 is installed on the supporting seat plate 13, the screw rod assembly 15 comprises a screw rod 20, screw rod nuts 21, square tubes 22, pin shafts 23, limit nuts 24 and limit plates 25, the two ends of the screw rod 20 are respectively provided with positive and negative teeth, the two side ends of the screw rod 20 are respectively provided with two screw rod nuts 21 which are screwed with the screw rod nuts, the square tubes 22 are two, the square tubes 22 are sleeved on the screw rod 20 and fixedly connected with the screw rod nuts 21, the limit nuts 24 are fixed at the middle position of the screw rod 20 and fixedly connected with the screw rod 20, the upper ends of the square tubes 22 are respectively fixed with the pin shafts 23, and a limiting plate 25 is fixed on the lower template 10, and the inner side of the limiting plate 25 is abutted against the two sides of the limiting nut 24. The upper template supporting component 16 comprises a longitudinal frame 26, pin shafts 23 and optical shafts 27, the middle of the longitudinal frame 26 is provided with a plurality of pin shafts 23 which are transversely arranged, the upper template 9 is fixed on the upper side surface of the longitudinal frame 26, the lower side of the longitudinal frame 26 is fixed with a plurality of optical shafts 27, the optical shafts 27 are in sliding fit with the upper sliding block 17 of the supporting seat plate 13, the upper template supporting component 16 can move up and down in the vertical direction, the lead screw component 15 penetrates through the guide sleeve 14 at the upper end of the supporting seat plate 13 and can longitudinally move back and forth along the direction of the longitudinal frame 26, the pull rod 18 is arranged above the lead screw component 15, the two side ends of the pull rod 18 are respectively provided with through holes, the upper end of the pull rod 18 is rotatably connected with the pin shafts 23 at the middle of the longitudinal frame 26, the lower end of the pull rod 18 is rotatably connected with the pin shafts 23 on the square tubes 22, the upper end surface of the longitudinal frame 26 is also provided with a sealing strip 28, and when the inner template component 2 extends outwards to a position, the upper template 9 in the inner template component 7 is in butt fit with the left template 11 and the right template 12 And the upper template 9 in the inner template component 7 is embedded and pressed on the upper end surface of the longitudinal frame 26, so that the upper template 9 is flush with the upper end surfaces of the left template 11 and the right template 12 when the inner template component 2 extends outwards.

As shown in fig. 6: the side template retracting mechanism 19 comprises a U-shaped push-pull plate 29, an L-shaped pull rod 30, a pull rod 18, a pin shaft 23, a shaft sleeve 31, a locking nut 32, a tension spring 33, a push rod 46, a connecting lug plate 37 and a roller 47; the U-shaped push-pull plate 29 is fixedly connected with the longitudinal frame 26, a rectangular opening is arranged at the lower side of the U-shaped push-pull plate 29, a pin shaft 23 is fixed on the supporting seat plate 13, the middle of the L-shaped pull rod 30 is rotationally connected with the pin shaft 23 on the supporting seat plate 13, one end of the L-shaped pull rod 30 is fixed with the pin shaft 23, a shaft sleeve 31 is sleeved on the pin shaft 23, one end of the pin shaft 23 is provided with a locking nut 32 for limiting, when the U-shaped push-pull plate 29 moves up and down along the longitudinal frame 26, the shaft sleeve 31 is abutted against the upper surface and the lower surface of the rectangular opening at the lower end of the U-shaped push-pull plate 29, the other end of the L-shaped pull rod 30 is hinged with the pull rod 18 through the pin shaft 23, the other end of the pull rod 18 is hinged with the left template 11 and the right template 12, a plurality of push rods 46 are longitudinally arranged along the square tube 22 and fixed on the square tube 22, a plurality of connecting lug plates 37 are longitudinally arranged along the left template 11 and the right template 12 and fixed on the left template 11 and the right template 12, the connecting lug plate 37 is provided with the pin shaft 23, the pin shaft 23 is provided with a roller 47, and two ends of the push rod 46 are provided with trapezoidal grooves. The pin shaft 23 is fixed on the guide sleeve 14 on the supporting seat plate 13, a tension spring 33 is arranged between the guide sleeve 14 and the pin shaft 23, one end of the tension spring 33 is connected with the lower end of the L-shaped pull rod 30, and the other end of the tension spring 33 is connected with the pin shaft 23 on the guide sleeve 14.

As shown in fig. 6 and 7: when the device works, the screw rod 20 is clockwise rotated when the inner template assembly 7 is in a furled state, the screw rod 20 drives the square pipes 22 at the two ends of the screw rod 20 to move towards the two ends through the screw rod nut 21, the square pipes 22 drive the lower end of the pull rod 18 to move towards the two ends through the pin shaft 23, the other end of the pull rod 18 drives the upper template support assembly 16 to move upwards, at the moment, the upper template 9 moves upwards and opens, the upper template support assembly 16 drives the U-shaped push-pull plate 29 to move upwards along with the longitudinal frame 26, the U-shaped push-pull plate 29 moves upwards and starts to drive the upper shaft sleeve 31 of the L-shaped pull rod 30 to move upwards when the lower end surface of the rectangular opening contacts the shaft sleeve 31, the shaft sleeve 31 drives the lower arm of the L-shaped pull rod 30 to rotate upwards, the L-shaped pull rod 30 pushes the left template 11 and the right template 12 to open outwards through the pull rod 18, when the square pipes 22 at the two ends move towards the two ends, the square pipes 22 drive the push rod 46 to move towards the two ends, the trapezoidal grooves at the push rollers 47 to move towards the two ends, the roller 47 drives the left template 11 and the right template 12 to open outwards through the pin shaft 23 and the connecting lug plate 37, the tension spring 33 positioned above the L-shaped pull rod 30 applies a tension force to the lower arm of the L-shaped pull rod 30 in the process that the left template 11 and the right template 12 open outwards, so that the left template 11 and the right template 12 open outwards more easily and freely, the screw rod 20 stops rotating after the inner template assembly 7 extends outwards to a proper position, and the opening action of the inner template assembly 7 is completed; when the flue is solidified and has strength, the inner template assembly 7 needs to be changed from an open state to a closed state, when the inner template assembly 7 is in the open state, the screw rod 20 is rotated anticlockwise, the screw rod 20 drives the end square pipes 22 at two sides of the screw rod 20 to move inwards through the screw rod nuts 21, when the end square pipes 22 at two sides move inwards, the square pipes 22 drive the push rods 46 to move inwards, trapezoidal grooves at two ends of the push rods 46 are separated from the rollers 47, the square pipes 22 drive the lower ends of the pull rods 18 to move inwards through the pins 23, the other end of the pull rods 18 drives the upper template support assembly 16 to move downwards, at the moment, the upper template 9 firstly moves downwards and closes, the upper template support assembly 16 drives the U-shaped push-pull plate 29 to move downwards along with the longitudinal frame 26, when the upper end face of the rectangular opening of the U-shaped push plate 29 moves downwards to contact with the shaft sleeve 31, the shaft sleeve 31 starts to move downwards, and the shaft sleeve 31 drives the lower arm of the L-shaped pull rod 30 to rotate downwards, the L-shaped pull rod 30 pulls the left template 11 and the right template 12 to be folded inwards through the pull rod 18, when the inner template assembly 7 is folded inwards to a position, the screw rod 20 stops rotating, and the folding action of the inner template assembly 7 is completed.

As shown in fig. 4: the outer edge surfaces of an upper template 9 or a lower template 10 or a left template 11 or a right template 12 in the inner die assembly 2 are provided with grooves which are consistent along the extending direction of the template; the groove is of a whole section type or a multi-section type.

As shown in fig. 8: the outer template assembly 4 comprises a left side panel 34, a right side panel 35 and a bottom side panel 36, the connecting assembly 5 comprises a connecting lug plate 37, a rotating block 38, a pin shaft 23, a transverse adjusting screw 39 and a locking nut 32, the connecting lug plate 37 is fixed on the side of the bottom side panel 36, the rotating block 38 is rotatably connected with the connecting lug plate 37 through the pin shaft 23, a through hole is formed in the upper end of the rotating block 38, the transverse adjusting screw 39 penetrates through the through hole in the upper end of the rotating block 38 and is locked and fixed through the locking nut 32, one end of the transverse adjusting screw 39 is fixed with the outer side faces of the left side panel 34 and the right side panel 35, the transverse adjusting screw 32 drives the transverse adjusting screw 39 to move left and right, and the transverse adjusting screw 39 drives the left side panel 34 and the right side panel 35 to move left and right to adjust the outer template assembly 4.

As shown in fig. 8: the power assisting assembly 6 in the outer die assembly 1 comprises a connecting lug plate 37, a gas spring 40 and a compression spring 41, wherein the connecting lug plate 37 is fixed on the lower side of the bottom side panel 36, the tail end of the gas spring 40 is hinged with the rotating block 38 through a pin shaft 23, the other end of the gas spring 40 is rotatably connected with the connecting lug plate 37 on the lower side of the bottom side panel 36 through the pin shaft 23, and the compression spring 41 is sleeved on a telescopic rod of the gas spring 40.

As shown in fig. 8: the lower side of the bottom panel 36 in the outer template component 4 is also provided with a pulley or a directional wheel 42, the upper end of the left side panel 34 in the outer template component 4 is hinged with a hook pull rod 43, and the upper end of the right side panel is fixed with a hook 44.

During operation, after the flue solidifies and has intensity, the inner mold assembly 2 is folded and then the upper end hook 44 of the right side panel 35 is opened, the left side panel 34 is rotated, the right side panel 35 is turned over downwards, the rotating block 38 rotates to push the gas spring 40 to contract, the gas spring 40 pushes the compression spring 41 to enable the compression spring 41 to generate elastic force, so that the impact generated by the downward rotation of the left side panel 34 and the right side panel 35 is buffered, after the flue is carried and opened, the left side panel 34 is rotated, the right side panel 35 is turned over upwards, at the moment, the compression spring 41 and the gas spring 40 apply upward force to the left side panel 34 and the upward rotation of the right side panel 35, so that the rotating weight of the left side panel 34 and the right side panel 35 is reduced, and the operation is lighter.

As shown in fig. 9 and 10: the upper template 9, the left template 11 and the right template 12 in the inner template assembly 7 can be processed into chamfers along the longitudinal long edges at the matching interface, and the upper template 9 can be automatically aligned through the chamfers when in butt joint and matching with the left template 11 and the right template 12.

As shown in fig. 11 and 12: the upper template 9, the left template 11 and the right template 12 in the inner template assembly 7 can be provided with a guide plate 45 at the matching interface, and the upper template 9 can be automatically aligned by the guide plate when matched with the left template 11 and the right template 12.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A jacking contraction type flue forming die comprises an outer die assembly, an inner die assembly and a die head, wherein the outer die assembly comprises an outer die plate assembly, a connecting assembly and a boosting assembly; the inner die assembly is placed in the outer die assembly; the die heads are sleeved at two ends of the inner die assembly; the bottom end of the outer die assembly is provided with a power-assisted assembly, the power-assisted assembly is connected with the outer die assembly through a connecting assembly, and the power-assisted assembly is used for assisting the outer die assembly to open and close;

the inner die assembly comprises an inner die plate assembly and an inner die retracting and expanding mechanism; an inner die plate group is arranged on the outer side of the inner die retracting and expanding mechanism; the inner template group is arranged on the inner template folding and unfolding mechanism in a surrounding manner; the internal mold retracting and expanding mechanism is driven by an external driving device to act, and drives the internal mold plate component to fold inwards or extend outwards through the internal mold retracting and expanding mechanism;

the method is characterized in that: the inner template assembly comprises an upper template, a lower template, a left template and a right template; the upper template, the lower template, the left template and the right template surround to form a rectangular wide flue mold;

the upper template and the lower template are in a shape of a square, the left template is in a shape of a square, the right template is in a shape of a reversed square, and corners of the left template and the right template can be provided with chamfers or fillets; the upper template, the left template, the right template and the lower template are combined into an □ shape after being stretched.

2. The jacking retractable flue forming die of claim 1, wherein: the inner mold retracting and expanding mechanism comprises a supporting seat plate, a guide sleeve, a screw rod assembly, an upper mold plate supporting assembly, a sliding block, a pull rod and a side mold plate retracting and expanding mechanism; the supporting seat plates are fixedly connected with the lower template, and a plurality of groups of supporting seat plates are arranged along the extension direction of the lower template; the upper end of the supporting seat plate is fixed with a guide sleeve, a sliding block is arranged in the supporting seat plate, a lead screw assembly is arranged in the guide sleeve on the supporting seat plate, a plurality of pull rods are arranged on the upper side of the lead screw assembly, the lead screw assembly is mutually connected with the upper template supporting assembly through the pull rods, side template retracting and releasing mechanisms are also arranged on two sides of the lead screw assembly, and the side template retracting and releasing mechanisms are mutually connected with a left template in a shape of a Chinese character and a right template in a shape of a Chinese character chi; the cope plate support assembly is for mounting a "-" shaped cope plate.

3. The jacking retractable flue forming die of claim 2, wherein: the screw rod assembly comprises a screw rod, a screw rod nut, a square tube, a pin shaft, a limiting nut and a limiting plate; the screw rod is a positive and negative screw rod, the positive and negative teeth of the screw rod are respectively provided with a screw rod nut, the square tube is sleeved on the screw rod nut, the limiting nut is fixed in the middle of the screw rod, and the upper end of the square tube is respectively fixed with a plurality of pin shafts; the limiting plate is positioned in the middle of the lower template, the upper end of the limiting plate is provided with a limiting nut, and the junction of the orthodontic section and the anti-tooth section of the screw rod is arranged in the limiting nut and fixedly connected with the limiting nut.

4. The jacking retractable flue forming die of claim 2, wherein: the upper template supporting assembly comprises a longitudinal frame, a pin shaft, a pull rod and an optical axis; the upper template is arranged on the longitudinal frame; the longitudinal frame is provided with a plurality of pin shafts which are transversely arranged; a plurality of optical axes vertical to the longitudinal frame are arranged on the lower end face of the longitudinal frame, and the optical axes are in sliding fit with the sliding blocks on the bearing seat plate; one end of the pull rod is hinged with the longitudinal frame through a pin shaft, and the other end of the pull rod is hinged with a pin shaft fixed at the upper end of the square tube;

when the inner die assembly extends outwards to a proper position, the upper die plate in the inner die assembly is in butt joint with the left die plate and the right die plate, the upper die plate in the inner die assembly is embedded and pressed to the upper end face of the longitudinal frame, and the upper die plate is flush with the upper end faces of the left die plate and the right die plate.

5. The jacking retractable flue forming die of claim 2, wherein: the side template retracting and releasing mechanism comprises a U-shaped push-pull plate, an L-shaped pull rod, a pin shaft, a shaft sleeve, a locking nut and a tension spring; the opening part of the U-shaped push-pull plate is fixedly connected with the longitudinal frame, the U-shaped push-pull plate is perpendicular to the longitudinal frame, and a rectangular through hole is formed below the U-shaped push-pull plate, which is far away from the opening part; the L-shaped pull rods are positioned at two sides of the U-shaped push-pull plate, pin shafts are respectively arranged at the middle part and two ends of each L-shaped pull rod, the middle part of each L-shaped pull rod is hinged with the supporting seat plate through the pin shaft, the pin shaft at the bottom end of each L-shaped pull rod extends into the rectangular through hole of the U-shaped push-pull plate, a shaft sleeve is sleeved on the pin shaft at the bottom end of each L-shaped pull rod, and the top ends of the L-shaped pull rods at the two sides of the U-shaped push-pull plate are respectively hinged with the left template and the right template through the pull rods;

the guide sleeve is also provided with a pin shaft, one end of a tension spring is connected with the bottom end of the L-shaped pull rod, and the other end of the tension spring is connected with the upper pin shaft of the guide sleeve.

6. The jacking retractable flue forming die of claim 1, wherein: the outer edge surface of the upper template or the lower template or the left template or the right template in the inner mold assembly is provided with grooves which are consistent along the extending direction of the template; the groove is of a whole section type or a multi-section type.

7. The jacking retractable flue forming die of claim 1, wherein: the outer template assembly comprises a left side panel, a right side panel and a bottom side panel;

the connecting assembly comprises a connecting lug plate, a rotating block, a transverse adjusting screw rod and a locking nut;

the power assisting assembly comprises a gas spring, a compression spring and a connecting lug plate;

the two side edges of the extending direction of the bottom side panel are respectively provided with a left side panel and a right side panel; the two side ends of the bottom side panel are respectively provided with a connecting lug plate; a rotatable rotating block is arranged on the connecting lug plate, and one end of the rotating block is fixed with the left side panel or the right side panel through a transverse adjusting screw rod;

the connecting lug plate is fixed at the bottom side of the bottom side panel, the gas spring is arranged at the bottom end of the bottom side panel, one end of the gas spring is connected with the rotating block, the other end of the gas spring is hinged with the connecting lug plate at the bottom side of the bottom side panel, a compression spring is arranged on the gas spring, and the compression spring is sleeved on a telescopic rod of the gas spring; and a locking nut is arranged on the transverse adjusting screw rod.

8. The jacking retractable flue forming die of claim 1 or 7, wherein: the lower side of the bottom side panel in the outer panel assembly is also provided with a pulley or a directional wheel; the top of left side panel and right side panel is equipped with the couple pull rod and the couple that are used for cooperating the external mold plate subassembly to open and shut respectively.

9. The jacking retractable flue forming die of claim 2, wherein: when an upper template in the inner template assembly is matched with the left template and the right template, the upper template, the left template and the right template form chamfers at the matching interfaces; the matching interfaces of the upper template, the left template and the right template are guide plates; and the left template and the right template in the inner template assembly are connected with the lower template through hinges or welding.

10. The jacking retractable flue forming die of claim 5, wherein: the device also comprises a push rod, a connecting lug plate and a roller; both ends of the push rod are provided with trapezoidal groove structures; the push rod is longitudinally provided with a plurality of connecting lug plates which are longitudinally arranged along the screw rod assembly and fixed on the screw rod assembly, and the inner side surfaces of the left template and the right template are respectively provided with a plurality of connecting lug plates which are longitudinally arranged; each connecting lug plate is provided with a pin shaft, and the pin shaft is provided with a roller;

when the left template and the right template are in an open state, two ends of the push rod are respectively abutted against the rollers;

when the left template and the right template are in a furled state, two ends of the push rod are respectively separated from the roller.

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