CN108312435B - Electric smelting pipe fitting core and automatic drawing of patterns equipment - Google Patents
Electric smelting pipe fitting core and automatic drawing of patterns equipment Download PDFInfo
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- CN108312435B CN108312435B CN201810307684.8A CN201810307684A CN108312435B CN 108312435 B CN108312435 B CN 108312435B CN 201810307684 A CN201810307684 A CN 201810307684A CN 108312435 B CN108312435 B CN 108312435B
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- positioning seat
- sliding
- pipe fitting
- binding post
- core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/261—Moulds having tubular mould cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention aims to solve the problems of low automation degree, complicated working procedures and low efficiency of the existing concentrated electro-melting pipe fitting core demoulding process, and provides electro-melting pipe fitting core demoulding equipment capable of realizing full-automatic demoulding operation and effectively improving production efficiency and electro-melting pipe fitting cores matched with the equipment. The electric melting pipe fitting mold core comprises a mold core main body, a fixed positioning seat and a separation positioning seat, wherein the fixed positioning seat and the separation positioning seat are of symmetrical structures. An automatic drawing of patterns equipment of electric smelting pipe fitting core, including operation platform, operation platform middle part sets up the blanking mouth, operation platform is provided with clamping device and shedder, shedder includes a pair of sliding platform, a pair of drawing of patterns owner and a pair of support frame of "U" shape. According to the technical scheme, the demolding operation of the mold core of the electric melting pipe fitting is automatically completed, and the labor input is effectively reduced; the positioning is stable in the mold core demolding and separating process, the demolding efficiency is improved by adopting a mode of separating and demolding at two ends, and the damage to the electric melting pipe fitting is reduced.
Description
Technical Field
The invention relates to an electric melting pipe fitting processing technology, in particular to an automatic demolding device for an electric melting pipe fitting mold core.
Background
An electrofusion pipe fitting refers to a plastic (polyethylene) pipe fitting that can be melted to connect by the temperature generated by an electric current. The PE electrofusion pipe fitting in the prior art is formed by injection molding of PE materials. After the core of the electric melting pipe fitting is wound, the electric melting pipe fitting is placed in a mould for injection molding, and after the blank of the PE material is injection molded, the core is demoulded to complete casting of the electric melting pipe fitting. In the core demolding procedure, not only is the electric melting pipe fitting product required to be prevented from being damaged, but also the binding post and the copper wire are required to be ensured to be remained inside the electric melting pipe fitting. In the prior art, the core demolding process is manually operated by manually matching with a special tool, the process is complicated, the efficiency is low, and a set of special demolding equipment is needed to realize the full-automatic operation of the demolding process.
Disclosure of Invention
The invention aims to solve the problems of low automation degree, complicated working procedures and low efficiency of the existing concentrated electro-melting pipe fitting core demoulding process, and provides electro-melting pipe fitting core demoulding equipment capable of realizing full-automatic demoulding operation and effectively improving production efficiency and electro-melting pipe fitting cores matched with the equipment.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the embodiment of the invention provides an electric melting pipe fitting mold core, which comprises a mold core main body, a fixed positioning seat and a separation positioning seat, wherein the mold core main body is cylindrical in shape, one end of the mold core main body is fixedly and coaxially connected with the fixed positioning seat, and the other end of the mold core main body is coaxially and detachably connected with the separation positioning seat; the fixed positioning seat and the separation positioning seat are of symmetrical structures; the fixed positioning seat is cylindrical, a demolding annular groove is formed in the side, far away from the core main body, of the surrounding fixed positioning seat, and a binding post mounting hole is formed in the side, close to the core main body, of the fixed positioning seat; the separating and positioning seat is cylindrical, a demolding annular groove is formed in one side, far away from the core main body, of the surrounding fixed positioning seat, a binding post mounting hole is formed in one side, close to the core main body, of the fixed positioning seat, and one end, close to the core main body, of the separating and positioning seat is detachably connected through an elastic pin.
The electric smelting pipe fitting core in this scheme comprises core main part, fixed positioning seat and separation positioning seat and constitutes separable structure, and core main part and fixed positioning seat constitute main part, and the separation positioning seat constitutes separable part. When the separating and positioning seat is connected with the core main body through the elastic pin, a complete core structure is formed. And the binding post mounting holes are used for mounting binding posts of the electric melting pipe fittings. The core main body is used for winding the copper wire of the electric smelting pipe fitting, so that the wire winding operation on the core is realized. The demoulding annular groove is used for positioning the demoulding equipment corresponding mechanism, so that reverse pulling force towards two ends can be applied to the core, the separation positioning seat and the core main body are separated, the core main body, the fixed positioning seat and the separation positioning seat can be separated from an injection-molded electric smelting pipe blank, and automatic demoulding operation of the core can be realized.
Preferably, the fixed positioning seat and the separating positioning seat are coaxially provided with a cylinder accommodating cavity at one end far away from the core main body, the binding post installation space is communicated with the accommodating cavity, and the end face of the fixed positioning seat far away from one end of the core main body is provided with a limiting pin groove. The holding cavity provides inserts and compresses tightly the operation space of fixed positioning seat and separation positioning seat at demolding equipment clamping structure to can improve the location stability degree when the drawing of patterns, and the holding cavity can alleviate the whole weight of core and reduce core materials, effective reduce cost. The limiting pin groove can cooperate with a locating pin on the demolding equipment to provide an auxiliary locating effect, so that the problems that the mold core rolls circumferentially when the demolding equipment is located, and the electric melting pipe fitting is damaged due to locating dislocation during demolding are avoided.
Preferably, a binding post shearing mechanism and a binding post clamping mechanism are arranged in the accommodating cavity; the binding post shearing mechanism comprises a reset sliding ring sleeve, a cutter rest and a pushing seat; the inner wall of the accommodating cavity is provided with a chute at the inner side of the terminal mounting hole, the terminal mounting hole penetrates through the chute bottom, the reset sliding ring sleeve is sleeved in the accommodating cavity in a sliding way, the tool rest is connected with the inner end of the reset sliding ring sleeve, the tool rest is positioned in the chute, the cutter is arranged on the tool rest, the reset sliding ring sleeve drives the tool rest to slide towards one side of the terminal mounting hole in the chute when sliding towards the inner end of the accommodating groove, the outer side surface of the reset sliding ring sleeve is provided with a spring mounting groove, the periphery of the inner side wall of the accommodating cavity is provided with a limiting convex ring, the limiting convex ring is embedded in the spring mounting groove, a first reset spring is sleeved in the spring mounting groove, one end of the first reset spring is propped against the limiting convex ring, and the other end of the first reset spring is propped against one end of the spring mounting groove, which is close to the opening of the accommodating groove; the inner side of the resettable sliding ring sleeve is provided with a pushing seat, and the pushing seat is pushed inwards to enable the resettable sliding ring sleeve to slide inwards; the clamping mechanism of the binding post comprises a clamping piece, a clamping sliding sleeve, a reset pressing plate and a pressing protrusion arranged at the inner end of the reset sliding sleeve, wherein the clamping piece comprises two elastic clamping pieces which are symmetrically attached, one end of each of the two elastic clamping pieces is attached, the other end of each of the two elastic clamping pieces is forked to form a Y-shaped structure, one end of each of the elastic clamping pieces is connected with the inner end of a sliding chute, one end of each of the elastic clamping pieces, which is forked, faces one side of a tool rest, the clamping sliding sleeve is slidably sleeved on the two elastic clamping pieces, and when the clamping sliding sleeve slides towards one end of each of the elastic clamping pieces, the elastic clamping pieces are clamped to be used for clamping the part of the binding post, which is inserted into a binding post mounting hole; the reset pressing plate is arranged on the inner side of the clamping sliding sleeve, a second reset spring and a guide rod are arranged between the reset pressing plate and the inner end face of the accommodating cavity, and the reset pressing plate is opposite to the pressing protrusion.
The binding post shearing mechanism is used for automatically completing cutting operation of the binding post when the electric melting pipe fitting core is positioned and installed. The binding post is inserted in the binding post mounting hole, the binding post main body part is molded inside the electric melting pipe fitting after the electric melting pipe fitting product is molded, and one end of the binding post is still inserted in the binding post mounting hole. After the electric smelting pipe fitting and the core are initially installed and positioned. The pushing seat is pushed by the mechanism towards the middle part of the electric melting pipe fitting core, when the reset sliding ring sleeve slides towards the inner end of the containing groove, the cutter frame is driven by the cutter frame to slide towards one side of the binding post mounting hole in the sliding groove, and therefore one end of the binding post is cut off when the cutter is driven by the cutter frame.
The binding post clamping mechanism is used for clamping the fixed binding post, and the clamping sliding sleeve is pushed to the forked end of the elastic clamping piece to slide under the action of the second reset spring by the reset pressing plate, so that the elastic clamping piece is clamped to be used for clamping the part of the binding post inserted into the binding post mounting hole. The positioning binding post has the function of preventing the binding post from sliding in the injection molding process to influence the quality of injection molding products. In the process of inward sliding of the reset sliding ring sleeve, the pressing protrusion on the reset sliding ring sleeve abuts against the reset pressing plate, so that the clamping sliding sleeve slides inwards, the elastic clamping piece is split again due to elasticity of the elastic clamping piece, the part of the binding post located in the core is not clamped, and therefore the cut binding post part is not fixed and falls off any more and can be taken out from the containing space.
The embodiment of the invention provides automatic demolding equipment for an electric melting pipe fitting core, which comprises an operation platform, wherein a blanking port is arranged in the middle of the operation platform, the operation platform is provided with a clamping device and a demolding device, the demolding device comprises a pair of sliding platforms, a pair of demolding main pulling cylinders and a pair of U-shaped supporting frames, the separating supporting frames are arranged at two ends of the blanking port, the sliding platforms are in sliding connection with the operation platform, the two sliding platforms slide along the same linear direction towards the supporting frames, the cylinder rod of the demolding main pulling cylinder is connected with the sliding platform, and the pushing directions of the two demolding main pulling cylinders are opposite along the sliding direction of the sliding platform; the two sliding platforms are respectively provided with a clamping mechanism, and the clamping mechanisms are used for clamping two ends of the core.
The fixed positioning seats and the separation positioning seats at two ends of the electric melting pipe fitting core are positioned and installed on the sliding platform through the clamping mechanism, and the core main body part is positioned above the blanking port. The support frame limits the electric smelting pipe fitting product position between two support frames when supporting the core both ends. The sliding platform is driven by the demoulding main pulling cylinder to pull two ends of the core towards two sides far away from the blanking port, so that the separating and positioning seat of the electric smelting pipe fitting core is separated from the core main body. The sliding platform and the clamping mechanism on one side pull the separating and positioning seat out of the electric melting pipe fitting, and the sliding platform and the clamping mechanism on the other side pull the fixing and positioning seat and the core main body out of the electric melting pipe fitting. Because in the separation process, the upper end of the binding post is already injection-molded in the electric melting pipe fitting, and only the tail end of the binding post is inserted into the binding post mounting hole, the binding post is mounted Kong Chuduan in the separation process, the copper wire wound on the core main body is already injection-molded into the electric melting pipe fitting, the core main body is extracted in the separation process, and the copper wire is left in the electric melting pipe fitting. According to the scheme, automatic demolding operation of the electric melting pipe fitting can be realized, labor input is reduced, and production efficiency is improved. Meanwhile, the mold core is of a structure with two separated ends, so that binding posts on two sides can be respectively forced to be cut off in the separation process, the efficiency is improved, the balance during demolding is maintained, and the damage is reduced when the electric melting pipe fitting and the mold core are separated.
Preferably, the clamping mechanism comprises a base and a U-shaped stripper plate, wherein the base is provided with a trapezoid groove, and the stripper plate is arranged at a position of the base close to the support frame.
The fixed positioning seats and the separation positioning seats at the two ends of the mold core are positioned and installed on the sliding platform through the clamping mechanism. The base is used for supporting and fixing the tail ends of the positioning seat and the separation positioning seat, and the trapezoid grooves are matched to realize positioning. The U-shaped support frame is used for limiting and supporting the tail ends of the fixed positioning seat and the separation positioning seat, and the diameter of the U-shaped structure is matched with the diameter sizes of the fixed positioning seat and the separation positioning seat. The stripper plate is clamped in the stripping annular groove, so that pulling force is applied to the fixed positioning seat and the separating positioning seat when the sliding platform slides to two sides, and stripping operation is performed.
Preferably, a separation limit groove matched with the outer diameter of the electric melting pipe fitting is formed in one side, facing the blanking port, of the support frame. The width of the separation limiting groove is matched with the outer diameter of the electric melting pipe fitting, so that two ends of the electric melting pipe fitting are limited between the supporting frames, the position of the electric melting pipe fitting is limited, the mold core can be pulled out of the electric melting pipe fitting, and the separated electric melting pipe fitting falls into the blanking port.
Preferably, a locating pin is arranged at the bottom of the demoulding annular groove. The locating pin is used for being matched with the limiting pin groove to realize circumferential positioning of the core, so that axial positioning deviation of the core is prevented, and damage to the electric melting pipe fitting product in demolding operation is avoided.
Preferably, the pneumatic pressing mechanism comprises a pressing rod and a pressing cylinder, the pressing rod is slidably connected with the sliding platform and points to the blanking port, the pressing rod is suspended above the clamping mechanism, the sliding direction of the pressing rod is parallel to the sliding direction of the sliding platform, one end, far away from the blanking port, of the pressing rod is connected with the pressing cylinder, and the pressing cylinder drives the pressing rod to slide towards the blanking port.
The pneumatic pressing mechanism is a mechanism for pressing the mold core to prevent the mold core from jumping up and down and further improving the stability of the mold core, the pressing cylinder drives the pressing rod to extend into the accommodating cavity of the fixed positioning seat and the separating positioning seat so as to press the fixed positioning seat and the separating positioning seat, and the mold core is positioned in an auxiliary mode at two ends in the vertical direction. Meanwhile, the pushing rod pushes the pushing seat to drive the binding post clamping mechanism to clamp and fix the binding post to finish automatic cutting-off operation of the binding post when extending into the fixing seat. Compared with the prior art, the cutting mode has the advantages that the mode that the binding post is violently broken through pulling the core can prevent the quality problems of bending of the binding post or damage of the electric melting pipe fitting in the pulling process, and meanwhile, the section of the binding post is smoother and easy to follow-up further processing operation.
Preferably, the operation platform is provided with a sliding support between the two sliding platforms, the sliding direction of the sliding support is in sliding connection with the operation platform to point to the blanking port, and the sliding support is provided with a pneumatic shearing device and a material ejection device.
The pneumatic shears and the material fixing device are arranged on the sliding support, the pneumatic shears slide to a position close to the blanking port through the sliding support, and the pneumatic shears are used for shearing redundant injection molding residual plastic structures on the electric smelting pipe fitting products.
Preferably, the material ejection device comprises a material ejection support, a pair of material ejection cylinders and a pair of material ejection rods, wherein the material ejection support is arranged on the sliding support, two parallel mounting plates are arranged at the top of the material ejection support, the pair of material ejection cylinders are vertically arranged on a positioning plate positioned above the material ejection support, at least two sliding sleeves are vertically arranged on the positioning plate positioned below the positioning plate, the material ejection rods are slidably sleeved in the sliding sleeves, the material ejection cylinders are connected to the upper ends of the material ejection rods, and material ejection needles are arranged at the lower ends of the material ejection rods.
The electric melting pipe fitting to be demolded is characterized in that the binding post is inserted into the binding post mounting holes on the fixed positioning seat and the separation positioning seat, and in the demolding process, the lower end part of the binding post is likely to remain in the binding post mounting holes, so that the reuse of the core after recombination can be influenced. After the demolding is completed, the sliding platform is inwards close to the mold core, the mold core is recombined, the ejector device can be close to the mold core through the sliding bracket, at the moment, the ejector rod is positioned above the mounting hole of the binding post, the ejector cylinder downwards pushes the ejector rod, the ejector rod downwards slides in the sliding sleeve, and the ejector needle at the tail end of the ejector rod is pressed to the accommodating cavity, so that the binding post is separated from the mold core, and the mold core spliced by recombination is convenient to perform wire winding and injection molding again.
Therefore, the invention has the following beneficial effects: (1) The demolding operation of the mold core of the electric melting pipe fitting is automatically completed, so that the manpower input is effectively reduced; (2) The positioning is stable in the mold core demolding and separating process, the demolding efficiency is improved by adopting a mode of separating and demolding at two ends, and the damage to the electric melting pipe fitting is reduced. (3) The terminal can be automatically cut off, the quality problems such as bending of the terminal or damage of the electric melting pipe fitting in the pulling process can be prevented, and meanwhile, the section of the terminal is smoother and easy to follow-up further processing operation.
Drawings
Fig. 1 is a schematic structural view of an electrofusion tube core according to a first embodiment.
Fig. 2 is a schematic cross-sectional view of the core of the electric melting pipe fitting according to the first embodiment.
Fig. 3 is a schematic structural view of an automatic demolding device for an electric melting pipe fitting core according to a second embodiment.
Fig. 4 is a schematic side view of an automatic demolding apparatus for electric melting pipe cores according to the second embodiment.
Fig. 5 is another schematic side view of an automatic demolding apparatus for electric melting pipe cores according to the second embodiment.
Fig. 6 is a schematic top view of an embodiment two electrofusion pipe core automatic demolding apparatus.
Fig. 7 is a schematic top view showing a demolding state of an automatic demolding apparatus for an electric melting pipe fitting core according to the second embodiment.
Fig. 8 is a schematic cross-sectional view of a three-embodiment electrofusion tube core.
Fig. 9 is a schematic cross-sectional view of a cutting post of a three-embodiment electrofusion tube mandrel.
Fig. 10 is a schematic structural view of a post clamping mechanism of a three-embodiment electrofusion tube core.
Fig. 11 is a schematic structural view showing a state in which a clamp of a core of a three-embodiment electrofusion tube is clamped.
In the figure:
1, an electric smelting pipe fitting core; a 101 core body; 102, fixing a positioning seat; 103 separating the positioning seat; 104 demoulding the annular groove; 105 binding post mounting holes; 106 elastic pins; 107 a receiving cavity; 108 limit pin grooves.
2, operating a platform; 201 blanking port; 3, sliding a platform; 4, demolding a main pulling cylinder; 5 supporting frames; 501 separating limit grooves; 601 a base; removing 602 the template; 603 trapezoidal grooves; 604 locating pins; 701 pushing the compression bar; 702 compacting the cylinder; 801 sliding support; 802 pneumatic shears; 803 liftout support; 804 a mounting plate; 805 liftout cylinder; 806 liftout bar; 807 ejector pins; 808 sliding sleeves.
109 resetting the sliding ring sleeve; 110, cutting knife; a 111 tool post; 112 propulsion seats; 113 sliding grooves; 114 limit convex rings; 115 spring mounting slots; 116 a first return spring; 117 clamp the sliding sleeve; 118 resetting the platen; 119 pressing the protrusion; 120 elastic clips; 121 a second return spring; 122 guide bars.
9 binding posts.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
Example 1
As shown in fig. 1 and 2, an embodiment of the present invention provides an electric melting pipe fitting core 1, which includes a core main body 101, a fixed positioning seat 102 and a separation positioning seat 103, wherein the core main body 101 is in a cylindrical shape, one end of the core main body 101 is fixedly and coaxially connected with the fixed positioning seat 102, and the other end of the core main body 101 is coaxially and detachably connected with the separation positioning seat 103; the fixed positioning seat 102 and the separation positioning seat 103 are of symmetrical structures; the fixed positioning seat 102 is cylindrical, a demolding annular groove 104 is formed around one side, far away from the core main body 101, of the fixed positioning seat 102, and a binding post mounting hole 105 is formed on one side, close to the core main body 101, of the fixed positioning seat 102; the separating and positioning seat 103 is cylindrical, a demolding annular groove 104 is formed in one side, far away from the core main body 101, of the surrounding fixed positioning seat 102, a binding post mounting hole 105 is formed in one side, close to the core main body 101, of the fixed positioning seat 102, and one end, close to the core main body 101, of the separating and positioning seat 103 is detachably connected through an elastic pin 106.
The electric melting pipe fitting core 1 in the scheme is formed into a separable structure by a core main body 101, a fixed positioning seat 102 and a separating positioning seat 103, the core main body 101 and the fixed positioning seat 102 form a main part, and the separating positioning seat 103 forms a separable part. The split positioning seat 103 forms a complete core structure when connected to the core body 101 by the elastic pin 106. The fixing positioning seat 102 and the separating positioning seat 103 are provided with binding post mounting holes 105 for mounting binding posts of the electric melting pipe fittings. The mandrel body 101 is used to wind the electrofusion tube copper wire, thereby achieving the wire winding operation on the mandrel. The demolding annular groove 104 is used for positioning a demolding device corresponding mechanism, so that reverse pulling force towards two ends can be applied to the mold core, the separation positioning seat 103 and the mold core main body 101 are separated, the mold core main body 101, the fixing positioning seat 102 and the separation positioning seat 103 can be separated from an injection molded electric smelting pipe blank, and automatic demolding operation of the mold core can be realized.
The fixed positioning seat 102 and the separating positioning seat 103 are coaxially provided with a cylinder accommodating cavity 107 at one end far away from the core main body 101, and the binding post installation space is communicated with the accommodating cavity 107. The accommodating cavity 107 provides an operation space for inserting and compressing the fixed positioning seat 102 and the separation positioning seat 103 in the clamping structure of the demolding device, so that the positioning stability during demolding can be improved, the overall weight of the mold core can be reduced, the material consumption of the mold core can be reduced, and the cost can be effectively reduced.
The fixed positioning seat 102 is provided with a limit pin groove 108 at an end surface far from one end of the core body 101. The limiting pin groove 108 can cooperate with the positioning pin 604 on the demolding device to provide auxiliary positioning function, so that the problems of electric melting pipe damage and the like caused by positioning dislocation during demolding due to circumferential rolling of the mold core during positioning of the demolding device are avoided.
Example two
As shown in fig. 3 and 4, the embodiment of the invention provides an automatic demolding device for an electric melting pipe fitting core, which comprises an operation platform 2, wherein a blanking port 201 is formed in the middle of the operation platform 2, and the automatic demolding device is characterized in that the operation platform 2 is provided with a clamping device and a demolding device, the demolding device comprises a pair of sliding platforms 3, a pair of demolding main pulling cylinders 4 and a pair of U-shaped supporting frames 5, the separating supporting frames 5 are arranged at two ends of the blanking port 201, the sliding platforms 3 are in sliding connection with the operation platform 2, the two sliding platforms 3 slide along the same straight line direction towards the supporting frames 5, a cylinder rod of the demolding main pulling cylinder 4 is connected with the sliding platform 3, and pushing directions of the two demolding main pulling cylinders 4 are opposite along the sliding direction of the sliding platform 3; the two sliding platforms 3 are respectively provided with a clamping mechanism, and the clamping mechanisms are used for clamping two ends of the core.
The clamping mechanism comprises a base 601 and a U-shaped stripper plate 602, wherein the base 601 is provided with a trapezoid groove 603, and the stripper plate 602 is arranged at a position of the base 601 close to the support frame 5.
The fixed positioning seats 102 and the separation positioning seats 103 at the two ends of the mold core are positioned and installed on the sliding platform 3 through the clamping mechanism. The base 601 is used for supporting the tail ends of the fixed positioning seat 102 and the separated positioning seat 103, and the trapezoid groove 603 is matched to realize positioning. The U-shaped supporting frame 5 of the fixed positioning seat 102 and the separating positioning seat 103 is used for limiting and supporting the tail ends of the fixed positioning seat 102 and the separating positioning seat 103, and the diameter of the U-shaped structure is matched with the diameter sizes of the fixed positioning seat 102 and the separating positioning seat 103. The stripper plate 602 is engaged in the stripper ring groove 104, so that a pulling force is applied to the fixed positioning seat 102 and the separating positioning seat 103 when the sliding platform 3 slides to both sides, and a stripping operation is performed.
A separation limit groove 501 matched with the outer diameter of the electric melting pipe fitting is formed in one side, facing the blanking port 201, of the supporting frame 5. The width of the separation limiting groove 501 is matched with the outer diameter of the electric melting pipe fitting, so that two ends of the electric melting pipe fitting are limited between the supporting frames 5, the position of the electric melting pipe fitting is limited, the mold core can be pulled out of the electric melting pipe fitting, and the separated electric melting pipe fitting falls into the blanking port 201.
The bottom of the demoulding annular groove 104 is provided with a locating pin 604. The locating pin 604 is used for matching with the limit pin groove 108 to realize circumferential positioning of the core, and prevent axial positioning deviation of the core, so that the product of the electric melting pipe fitting is damaged in the demolding operation.
The pneumatic pressing mechanism is arranged on the sliding platform 3 and comprises a pressing rod 701 and a pressing cylinder 702, the pressing rod 701 is connected with the sliding platform 3 in a sliding mode and points to the blanking port 201 in a sliding mode, the pressing rod 701 is suspended above the clamping mechanism, the sliding direction of the pressing rod 701 is parallel to the sliding direction of the sliding platform 3, one end, far away from the blanking port 201, of the pressing rod 701 is connected with the pressing cylinder 702, and the pressing cylinder 702 drives the pressing rod 701 to slide towards the blanking port 201.
The pneumatic pressing mechanism is used for pressing the core to prevent the core from jumping up and down and further improving the stability of the core, the pressing cylinder 702 drives the pressing rod 701 to extend into the accommodating cavity 107 of the fixed positioning seat 102 and the separating positioning seat 103 so as to press the fixed positioning seat 102 and the separating positioning seat 103, and the core is positioned in an auxiliary mode at two ends in the vertical direction.
The operation platform 2 is provided with a sliding support 801 between the two sliding platforms 3, the sliding support 801 is connected with the operation platform 2 in a sliding way, the sliding direction points to the blanking port 201, and the sliding support 801 is provided with a pneumatic shear 802 and a jacking device.
The pneumatic shears 802 and the material fixing device are arranged on the sliding support 801, the sliding support 801 slides to a position close to the blanking port 201, and the pneumatic shears 802 are used for shearing redundant injection molding residual plastic structures on the electric smelting pipe fitting products.
As shown in fig. 5, the ejection device includes an ejection bracket 803, a pair of ejection cylinders 805 and a pair of ejection rods 806, where the ejection bracket 803 is disposed on the sliding bracket 801, two parallel mounting plates 804 are disposed on top of the ejection bracket 803, the pair of ejection cylinders 805 are vertically disposed on a positioning plate located above, at least two sliding sleeves 808 are vertically disposed on the positioning plate located below, the ejection rods 806 are slidably sleeved in the sliding sleeves 808, the ejection cylinders 805 are connected to the upper ends of the ejection rods 806, and ejection needles 807 are disposed at the lower ends of the ejection rods 806.
In the demolding process, the part of the lower end of the binding post is likely to remain in the binding post mounting hole 105, which can affect the reuse of the core after recombination. After demolding is completed, the sliding platform 3 is inwards close to the core, the core is recombined, the ejector device can be close to the core through the sliding bracket 801, at the moment, the ejector rod 806 is positioned above the binding post mounting hole 105, the ejector cylinder 805 pushes the ejector rod 806 downwards, the ejector rod 806 slides downwards in the sliding sleeve 808, and the ejector needle 807 at the tail end of the ejector rod 806 pushes the ejector pin to the accommodating cavity 107, so that the binding post is separated from the core, and the core spliced by recombination is convenient to perform wire winding and injection molding again.
As shown in fig. 6 and 7, the fixed positioning seat 102 and the separating positioning seat 103 at two ends of the electric melting pipe fitting core 1 are positioned and installed on the sliding platform 3 through the clamping mechanism, and the core main body 101 is partially positioned above the blanking port 201. The support frames 5 support the two ends of the core and limit the position of the electric smelting pipe fitting product between the two support frames 5. The sliding platform 3 is driven by the demoulding main pulling cylinder 4 to pull two ends of the core towards two sides far away from the blanking port 201, so that the separating and positioning seat 103 of the electric smelting pipe fitting core 1 is separated from the core main body 101. The sliding platform 3 and the clamping mechanism on one side pull the separating and positioning seat 103 out of the electric melting pipe fitting, and the sliding platform 3 and the clamping mechanism on the other side pull the fixing and positioning seat 102 and the core main body 101 out of the electric melting pipe fitting. Since the upper end of the binding post is already injection-molded in the electric melting pipe fitting in the above-mentioned separation process, and only the end is inserted into the binding post mounting hole 105, the binding post mounting hole 105 is broken in the separation process, and the copper wire wound around the core main body 101 is already injection-molded into the electric melting pipe fitting, the core main body 101 is drawn out in the separation process, and the copper wire remains inside the electric melting pipe fitting. According to the scheme, automatic demolding operation of the electric melting pipe fitting can be realized, labor input is reduced, and production efficiency is improved. Meanwhile, the mold core is of a structure with two separated ends, so that binding posts on two sides can be respectively forced to be cut off in the separation process, the efficiency is improved, the balance during demolding is maintained, and the damage is reduced when the electric melting pipe fitting and the mold core are separated.
Example III
As shown in fig. 8 and 9, this embodiment provides an electrofusion pipe core, which is further optimized based on the scheme of the first embodiment, specifically:
a binding post shearing mechanism and a binding post clamping mechanism are arranged in the accommodating cavity; the binding post shearing mechanism comprises a reset sliding ring sleeve 109, a cutter 110, a cutter rest 111 and a pushing seat 112; the inner wall of the accommodating cavity is provided with a sliding groove 113 at the inner side of a binding post mounting hole, the binding post mounting hole penetrates through the bottom of the sliding groove 113, the reset sliding ring sleeve 109 is sleeved in the accommodating cavity in a sliding way, the tool rest 111 is connected with the inner end of the reset sliding ring sleeve 109, the tool rest 111 is positioned in the sliding groove 113, the cutter 110 is arranged on the tool rest 111, the tool rest 111 is driven to slide towards one side of the binding post mounting hole in the sliding groove 113 when the reset sliding ring sleeve 109 slides towards the inner end of the accommodating groove, the outer side surface of the reset sliding ring sleeve 109 is provided with a spring mounting groove 115, the periphery of the inner side wall of the accommodating cavity is provided with a limiting convex ring 114, the limiting convex ring 114 is embedded in the spring mounting groove 115, a first reset spring 116 is sleeved in the spring mounting groove 115, one end of the first reset spring 116 abuts against the limiting convex ring 114, and the other end of the first reset spring 116 abuts against one end of the spring mounting groove 115 close to the opening of the accommodating groove; the inside of the resettable collar is provided with a pushing seat 112, and pushing the pushing seat 112 inward can slide the resettable sliding collar 109 inward.
As shown in fig. 10 and 11, the terminal clamping mechanism comprises a clamping piece, a clamping sliding sleeve 117, a reset pressing plate 118 and a pressing protrusion 119 arranged at the inner end of the reset sliding sleeve 109, wherein the clamping piece comprises two elastic clamping pieces 120 which are symmetrically attached, one end of each elastic clamping piece 120 is attached, the other end of each elastic clamping piece is forked to form a Y-shaped structure, one end of each elastic clamping piece 120 is connected with the inner end of the corresponding sliding groove 113, one end of each elastic clamping piece 120, which is forked, faces one side of the corresponding tool rest 111, the clamping sliding sleeve 117 is sleeved on the two elastic clamping pieces 120 in a sliding manner, and when the clamping sliding sleeve 117 slides towards one forked end of the corresponding elastic clamping piece 120, the elastic clamping piece 120 is clamped to clamp a part for inserting the terminal into the mounting hole of the terminal; the reset pressing plate 118 is arranged on the inner side of the clamping sliding sleeve 117, a second reset spring 121 and a guide rod 122 are arranged between the reset pressing plate 118 and the inner end surface of the accommodating cavity, and the reset pressing plate 118 is opposite to the pressing protrusion 119.
The binding post shearing mechanism is used for automatically completing cutting operation of the binding post when the electric melting pipe fitting core is positioned and installed. The binding post 9 is inserted into the binding post mounting hole, the binding post main body part is molded inside the electric melting pipe fitting after the electric melting pipe fitting product is molded, and one end of the binding post main body part is still inserted into the binding post mounting hole. After the electric smelting pipe fitting and the core are initially installed and positioned. The pushing seat 112 is pushed by the mechanism towards the middle part of the electric smelting pipe fitting core, when the reset sliding ring sleeve 109 slides towards the inner end of the internal groove, the cutter frame 111 is driven by the cutter frame 111 to cut off the inserted end of the binding post by driving the cutter frame 111 to slide towards one side of the binding post mounting hole in the sliding groove 113.
The pushing rod pushes the pushing seat 112 to drive the binding post clamping mechanism to clamp and fix the binding post to complete the automatic cutting operation of the binding post while extending into the fixing seat. Compared with the prior art, the cutting mode has the advantages that the mode that the binding post is violently broken through pulling the core can prevent the quality problems of bending of the binding post or damage of the electric melting pipe fitting in the pulling process, and meanwhile, the section of the binding post is smoother and easy to follow-up further processing operation.
Claims (1)
1. The electric melting pipe fitting mold core is characterized by comprising a mold core main body (101), a fixed positioning seat (102) and a separation positioning seat (103), wherein the mold core main body (101) is cylindrical, one end of the mold core main body (101) is fixedly and coaxially connected with the fixed positioning seat (102), and the other end of the mold core main body (101) is coaxially and detachably connected with the separation positioning seat (103); the fixed positioning seat (102) and the separation positioning seat (103) are of symmetrical structures; the fixed positioning seat (102) is cylindrical, a demolding annular groove (104) is formed in the side, far away from the core main body (101), of the fixed positioning seat (102), and a binding post mounting hole (105) is formed in the side, close to the core main body (101), of the fixed positioning seat (102); the separating and positioning seat (103) is cylindrical, a demolding annular groove (104) is formed in one side, far away from the core main body (101), of the surrounding fixed positioning seat (102), a binding post mounting hole (105) is formed in one side, close to the core main body (101), of the fixed positioning seat (102), and one end, close to the core main body (101), of the separating and positioning seat (103) is detachably connected through an elastic pin (106);
the end face of the fixed positioning seat (102) far away from one end of the core main body (101) is provided with a limit pin groove (108);
a binding post shearing mechanism and a binding post clamping mechanism are arranged in the accommodating cavity (107); the binding post shearing mechanism comprises a reset sliding ring sleeve (109), a cutter (110), a cutter rest (111) and a propelling seat (112); the inner wall of the accommodating cavity (107) is provided with a sliding groove (113) at the inner side of a binding post mounting hole, the binding post mounting hole penetrates through the bottom of the sliding groove (113), the reset sliding ring sleeve (109) is arranged in the accommodating cavity (107) in a sliding manner, the tool rest (111) is connected with the inner end of the reset sliding ring sleeve (109), the tool rest (111) is positioned in the sliding groove (113), the cutter (110) is arranged on the tool rest (111), the tool rest (111) is driven to slide towards one side of the binding post mounting hole in the sliding groove (113) when the reset sliding ring sleeve (109) slides towards the inner end of the accommodating groove, the outer side surface of the reset sliding ring sleeve (109) is provided with a spring mounting groove (115), the periphery of the inner side wall of the accommodating cavity (107) is provided with a limiting convex ring (114), the limiting convex ring (114) is embedded in the spring mounting groove (115), a first reset spring (116) is sleeved in the spring mounting groove (115), one end of the first reset spring (116) abuts against the limiting convex ring (114), and the other end of the first reset spring (116) abuts against one end of the spring mounting groove (115) close to the opening of the accommodating groove; a pushing seat (112) is arranged on the inner side of the resettable ring sleeve, and the pushing seat (112) is pushed inwards to enable the resettable sliding ring sleeve (109) to slide inwards; the binding post clamping mechanism comprises clamping pieces, clamping sliding sleeves (117), a reset pressing plate (118) and pressing protrusions (119) arranged at the inner ends of the reset sliding ring sleeves (109), each clamping piece comprises two elastic clamping pieces (120) which are symmetrically attached, one ends of the two elastic clamping pieces (120) are attached, the other ends of the two elastic clamping pieces are forked to form a Y-shaped structure, one ends of the elastic clamping pieces (120) which are attached to each other are connected with the inner ends of sliding grooves (113), one ends of the elastic clamping pieces (120) are forked to face one side of a tool rest (111), the clamping sliding sleeves (117) are slidably sleeved on the two elastic clamping pieces (120), and when the clamping sliding sleeves (117) slide towards one forked end of the elastic clamping pieces (120), the elastic clamping pieces (120) are clamped to be used for clamping the parts of binding posts inserted into binding post mounting holes; the reset pressing plate (118) is arranged on the inner side of the clamping sliding sleeve (117), a second reset spring (121) and a guide rod (122) are arranged between the reset pressing plate (118) and the inner end surface of the accommodating cavity (107), and the reset pressing plate (118) is opposite to the pressing protrusion (119).
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| CN201810307684.8A CN108312435B (en) | 2018-04-08 | 2018-04-08 | Electric smelting pipe fitting core and automatic drawing of patterns equipment |
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| CN201810307684.8A CN108312435B (en) | 2018-04-08 | 2018-04-08 | Electric smelting pipe fitting core and automatic drawing of patterns equipment |
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| CN108312435A CN108312435A (en) | 2018-07-24 |
| CN108312435B true CN108312435B (en) | 2023-09-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108748905B (en) * | 2018-07-27 | 2024-03-15 | 公元股份有限公司 | Plastic electrofusion saddle type mould |
| CN110653988A (en) * | 2019-09-27 | 2020-01-07 | 珠海格力智能装备有限公司 | Penetrate gluey mechanism and have its injection molding machine |
| CN112318824A (en) * | 2020-10-12 | 2021-02-05 | 东莞铧冠橡塑制品有限公司 | Production device and production method of rubber sleeve |
| CN114536646B (en) * | 2021-10-29 | 2023-11-17 | 浙江新大塑料管件有限公司 | Wire winding and demolding integrated machine for electric smelting pipe fitting |
| CN114211684B (en) * | 2021-10-29 | 2023-11-28 | 浙江新大塑料管件有限公司 | PE pipe fitting automatic resistor wire burying device and wiring method thereof |
| CN115502336B (en) * | 2022-11-18 | 2023-03-24 | 河北宇德机械有限公司 | Automatic change coring device |
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| CN104816436A (en) * | 2015-04-29 | 2015-08-05 | 永高股份有限公司 | Rail type continuous-production PE electric smelting pipe fitting die |
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