CN116714168A - Refrigerator door foaming mechanism - Google Patents
Refrigerator door foaming mechanism Download PDFInfo
- Publication number
- CN116714168A CN116714168A CN202310949115.4A CN202310949115A CN116714168A CN 116714168 A CN116714168 A CN 116714168A CN 202310949115 A CN202310949115 A CN 202310949115A CN 116714168 A CN116714168 A CN 116714168A
- Authority
- CN
- China
- Prior art keywords
- sliding
- fixedly connected
- refrigerator door
- die
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005187 foaming Methods 0.000 title claims abstract description 37
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000004088 foaming agent Substances 0.000 abstract description 13
- 210000001503 joint Anatomy 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 25
- 238000002347 injection Methods 0.000 description 21
- 239000007924 injection Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Classifications
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
- B29C44/3446—Feeding the blowing agent
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/367—Feeding the material to be shaped using spray nozzles
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
- B29C44/428—Mould constructions; Mould supporting equipment
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/762—Household appliances
- B29L2031/7622—Refrigerators
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The application discloses a refrigerator door foaming mechanism, which relates to the technical field of foaming forming equipment and comprises the following components: the fixed die is fixedly arranged on a travelling mechanism, and the travelling mechanism is provided with a first stroke for performing horizontal linear reciprocating motion; the movable die is connected to the fixed die in a sliding manner along the first stroke direction, and covers the refrigerator door body to be foamed when the movable die and the fixed die are matched; the limiting plate is fixedly connected with the fixed foundation, and can limit the movement stroke of the movable die; the guide rail is fixedly connected to the fixed foundation; the guide slide bar is fixedly connected to the guide rail and comprises an inclined section and a horizontal section which are connected, and the horizontal section is lower than the inclined section; and the sliding seat is connected to the guide rail in a sliding manner along the first stroke direction. The application provides a refrigerator door capable of automatically realizing translation, die assembly and butt joint of a foaming agent nozzle by only arranging a driving source of a travelling mechanism, which has the advantages of smooth action, high efficiency, no need of configuring electronic components such as a sensor and low failure rate.
Description
Technical Field
The application relates to the technical field of foam molding equipment, in particular to a refrigerator door foaming mechanism.
Background
The manufacturing process of the refrigerator door body is that the shell of the metal plate and the inner plate formed by plastic suction are connected together, a cavity is reserved in the middle, then the foaming agent is injected into the cavity through the injection port reserved on the side face of the inner container, and the refrigerator door body is finally manufactured by foam forming through temperature and pressure adjustment.
The patent with the publication number of CN108099085A and the name of 'an automatic foaming machine for a refrigerator bar counter door' comprises a foaming clamp, a bent plate, a translation bracket, a mold opening cylinder, a linear guide rail, a lifting bracket, a linear bearing, a guide pillar, a frame, a lifting cylinder, a translation cylinder, a proximity switch matched with each other and a control system component. When all the cylinder rods of the mold opening cylinder, the lifting cylinder and the translation cylinder are at the retracted positions, the positions are the positions for loading the door body to be foamed and taking out the foamed finished product; in the position, the foaming clamp is opened, after an operator loads a door body to be foamed into the clamp, the mold opening cylinder acts, the cylinder rod stretches out to drive the upper cover and the lower cover of the clamp to be closed, and the operator locks the clamp manually; then the translation cylinder acts, the cylinder rod stretches out, and a foaming clamp system (a foaming clamp, a bent plate, a translation bracket and a die opening cylinder) is sent to the position right below the injection gun head along a linear guide rail, wherein the position is the position of foaming injection; at this time, the lifting cylinder acts to push the whole lifting system (the foaming clamp, the bending plate, the translation bracket, the die opening cylinder, the linear guide rail, the lifting bracket and the linear bearing) to start along the guide post, the injection gun head is inserted into the injection port of the foaming clamp, the injection gun head starts to inject materials, after the injection is completed, the lifting cylinder is retracted, the foaming clamp is separated from the injection gun head, the translation cylinder is retracted, the whole translation system is driven to a retracted position, the foaming material is waited for curing, after the curing process is finished, the calipers are opened, the die opening cylinder is retracted, the upper cover of the foaming clamp is opened, and the finished foaming door body is taken out. And then proceeds to the next foaming cycle.
In the prior art such as the above patent, the foaming process of the refrigerator door body needs to be completed by means of three cylinders of a mold opening cylinder, a lifting cylinder and a translation cylinder. If the three cylinders are operated by manual operation, the operation is complicated, and the efficiency is still to be improved; if the three cylinders are connected and automatically triggered through the control system, a plurality of sensor components for signal butt joint, detection and feedback are needed to be additionally arranged, so that the cost is increased, and the failure rate is high.
Disclosure of Invention
The application aims to provide a refrigerator door foaming mechanism which aims to solve the defects in the prior art.
In order to achieve the above object, the present application provides the following technical solutions: a refrigerator door foaming mechanism comprising: the fixed die is fixedly arranged on a travelling mechanism, and the travelling mechanism is provided with a first stroke for performing horizontal linear reciprocating motion; the movable die is connected to the fixed die in a sliding manner along the first stroke direction, and covers the refrigerator door body to be foamed when the movable die and the fixed die are matched; the limiting plate is fixedly connected with the fixed foundation, and can limit the movement stroke of the movable die; the guide rail is fixedly connected to the fixed foundation; the guide slide bar is fixedly connected to the guide rail and comprises an inclined section and a horizontal section which are connected, and the horizontal section is lower than the inclined section; the sliding seat is connected to the guide rail in a sliding manner along the first stroke direction; the vertical rod is vertically arranged on the sliding seat in a sliding way, and the top of the vertical rod is in sliding connection with the guide sliding rod; the nozzle is fixedly connected to the vertical rod, and the movable die and/or the fixed die are provided with avoiding grooves through which the nozzle can pass; the elastic unit is used for enabling the top of the vertical rod to be abutted on the guide slide rod by the elastic force; the trigger piece is fixedly connected to the fixed die and has a trigger stroke blocked with the nozzle in the moving process of following the fixed die; and a locking assembly which is assembled to lock the movable mold and the fixed mold when they are clamped.
Further, a guide rod is fixedly connected to the fixed die, a sliding sleeve is fixedly connected to the movable die, and the sliding sleeve is arranged on the guide rod in a sliding sleeve mode.
Further, a roller is arranged at the top of the vertical rod and is in rolling connection with the guide slide rod.
Further, the elastic unit comprises a first pressure spring, the first pressure spring is movably sleeved on the vertical rod, the upper end of the first pressure spring is fixedly connected with the top of the vertical rod, and the lower end of the first pressure spring is fixedly connected with the sliding seat.
Further, the trigger piece is arc-shaped and matched with the pipe body of the nozzle.
Further, the lower end of the nozzle is tapered.
Further, the locking assembly comprises a sliding pin and an elastic piece, the sliding pin is arranged on the movable mould in a sliding mode, the elastic force of the elastic piece enables the sliding pin to be abutted on a guide rod, and a limiting groove is formed in the guide rod; when the die is assembled, the elastic force of the elastic piece enables the sliding pin to be inserted into the limit groove.
Further, the elastic piece comprises a second pressure spring, one end of the second pressure spring is fixedly connected with the sliding pin, and the other end of the second pressure spring is fixedly connected to the movable die through the connecting block.
Further, the sliding structure formed by the guide rod and the sliding sleeve is provided with two groups, the locking pieces are also provided with two groups, and the two locking pieces are correspondingly matched with the two sliding structures one by one.
Further, a connecting rod is fixedly connected between the sliding pins of the two locking pieces.
In the technical scheme, the refrigerator door foaming mechanism provided by the application can automatically realize translation, die assembly and butt joint of the foaming agent nozzle of the refrigerator door by only arranging one driving source of the travelling mechanism, has high action fluency and efficiency, does not need to be provided with electronic components such as a sensor and the like, and has low failure rate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIGS. 1-2 are schematic views of an overall structure according to an embodiment of the present application;
FIG. 3 is a schematic view of a partial structure according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a refrigerator door body according to an embodiment of the present application when the refrigerator door body is sleeved in a fixed mold;
fig. 5 is a schematic structural diagram of an injection port of a refrigerator door aligned with a nozzle according to an embodiment of the present application;
FIG. 6 is a schematic view of a nozzle according to an embodiment of the present application inserted into an injection port;
fig. 7 is a schematic structural diagram of the mold clamping according to the embodiment of the present application;
FIG. 8 is a schematic view of a nozzle according to an embodiment of the present application;
FIG. 9 is a cross-sectional view of a structure when a nozzle provided in an embodiment of the present application is normally closed;
FIG. 10 is a cross-sectional view of a nozzle according to an embodiment of the present application;
FIGS. 11-12 are cross-sectional views of a nozzle according to an embodiment of the present application when the nozzle is not normally opened;
FIG. 13 is a schematic diagram illustrating a connection structure between a sliding portion and a valve plug according to an embodiment of the present application.
Reference numerals illustrate:
1. a nozzle; 101. a tube body; 102. a material nozzle; 103. a first spring; 104. a sliding part; 105. a valve plug; 106. a second spring; 107. a wedge bar; 108. a first corrugated expansion pipe; 109. a second corrugated expansion pipe; 110. a limit part; 111. arc tabletting; 112. a limiting ring; 113. a mounting member; 114. a connecting rod; 2. a fixed mold; 3. a movable mold; 4. a guide rail; 5. a slide guiding rod; 5.1, an inclined section; 5.2, horizontal segment; 6. a slide; 7. a vertical rod; 8. an elastic unit; 9. a trigger; 10. a locking assembly; 1001. a slide pin; 1002. an elastic member; 1003. a limit groove; 11. a guide rod; 12. a sliding sleeve; 13. a roller; 14. a connecting rod; 15. an avoidance groove; 16. and a limiting plate.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1-13, the refrigerator door foaming mechanism provided by the embodiment of the application comprises a fixed mold 2, a movable mold 3, a guide rail 4, a guide slide bar 5, a sliding seat 6, a vertical rod 7, a nozzle 1, an elastic unit 8, a trigger piece 9 and a locking assembly 10, wherein the fixed mold 2 is fixedly arranged on a travelling mechanism, the travelling mechanism is provided with a first travel which performs horizontal linear reciprocating motion, and the travelling mechanism can adopt a driving device in the prior art, such as a hydraulic cylinder, an air cylinder and a power output end of an electric push rod to push and pull the fixed mold 2, or a motor drives the fixed mold 2 to move through gear rack transmission, which is not repeated here.
The movable die 3 is slidably connected to the fixed die 2 along the direction of the first stroke, in particular, a guide rod 11 is fixedly connected to the fixed die 2, a sliding sleeve 12 is fixedly connected to the movable die 3, the sliding sleeve 12 is slidably sleeved on the guide rod 11, the movable die 3 and the fixed die 2 cover a refrigerator door body to be foamed when being matched with each other, the supporting and protecting effects are achieved on the shell and the liner of the refrigerator door body, and the expansion deformation of the refrigerator door body caused by expansion of a foaming agent in the foaming process is prevented; a limiting plate 16 for limiting the movement of the movable die 3 is also fixedly arranged on the fixed base.
The guide rail 4 is fixedly connected to a fixed foundation, the fixed foundation is fixed relative to the ground and a wall body, if the fixed foundation is a frame, the guide slide bar 5 is fixedly connected to the guide rail 4 or the fixed foundation, the guide slide bar 5 comprises an inclined section 5.1 and a horizontal section 5.2 which are connected, the horizontal section 5.2 is lower than the inclined section 5.1, the joint of the inclined section 5.1 and the horizontal section 5.2 is rounded, the sliding seat 6 is slidingly connected to the guide rail 4 along the direction of a first stroke, the vertical rod 7 is vertically slidingly arranged on the sliding seat 6, the top of the vertical rod 7 is slidingly connected with the guide slide bar 5, the nozzle 1 is fixedly connected to the vertical rod 7, a avoidance groove 15 through which the nozzle 1 can pass is formed in the movable mould 3 and/or the fixed mould 2, the lower end of the nozzle 1 is conical, the top of the vertical rod 7 is movably abutted to the guide slide bar 5 by the elastic force of the elastic unit 8, preferably, the top of the vertical rod 7 is provided with a roller 13, the roller 13 is in rolling connection with the guide slide bar 5, and the roller 13 can reduce the resistance when the vertical rod 7 slides relative to the guide slide bar 5; preferably, the elastic unit 8 comprises a first pressure spring, the first pressure spring is movably sleeved on the vertical rod 7, the upper end of the first pressure spring is fixedly connected with the top of the vertical rod 7, and the lower end of the first pressure spring is fixedly connected with the sliding seat 6.
The trigger piece 9 is fixedly connected to the fixed die 2, the trigger piece 9 is preferably arc-shaped and matched with the pipe body 101 of the nozzle 1, the trigger piece 9 has a trigger stroke which is blocked with the nozzle 1 in the moving process of following the fixed die 2, and the locking assembly 10 is assembled to lock the movable die 3 and the fixed die 2 when the movable die 3 and the fixed die 2 are matched.
As a preferable technical solution of the present embodiment, the locking assembly 10 includes a sliding pin 1001 and an elastic member 1002, the sliding pin 1001 is slidably disposed on the movable mold 3, the elastic force of the elastic member 1002 makes the sliding pin 1001 abut against the guide rod 11, and the guide rod 11 is provided with a limit groove 1003; when the mold is closed, the elastic force of the elastic piece 1002 enables the sliding pin 1001 to be inserted into the limit groove 1003, so that the movable mold 3 and the fixed mold 2 can be locked together; when the mold is opened, the elastic member 1002 makes the slide pin 1001 contact the guide bar 11, and the sliding friction resistance between the slide pin 1001 and the guide bar 11 can keep the movable mold 3 and the fixed mold 2 in the opened state. Further preferably, the elastic member 1002 includes a second compression spring, one end of which is fixedly connected to the sliding pin 1001, and the other end of which is fixedly connected to the movable mold 3 through a connection block.
As a preferred technical scheme, the sliding structure formed by the guide rod 11 and the sliding sleeve 12 is provided with two groups, the locking pieces are also provided with two groups, and the two locking pieces are correspondingly matched with the two sliding structures one by one. Further, a connecting rod 14 is fixedly connected between the slide pins 1001 of the two locking members.
As a preferred solution, a magnetic attraction element (not shown in the figure) is arranged between the trigger element 9 and the tube 101 of the nozzle 1, which can be magnetically attracted together when they are in abutment.
As another preferable technical scheme, a spring (not shown in the figure) is arranged between the guide rail 4 and the sliding seat 6, when the fixed die 2 moves to enable the trigger piece 9 to be blocked with the nozzle 1 and drive the nozzle 1 and the sliding seat 6 to move together, elastic deformation is caused to store elastic force, and when the fixed die 2 is reversely moved after material injection, the sliding seat 6 and the nozzle 1 are reversely moved to an initial position by the elastic force of the spring.
In the above embodiment, when the movable mold 3 and the fixed mold 2 are in the mold opening state, the vertical rod 7 is kept in contact with the inclined section 5.1 of the slide guiding rod 5, the bottom of the nozzle 1 is higher than the heights of the movable mold 3 and the fixed mold 2, the refrigerator door body to be foamed is nested into the fixed mold 2 by a manual or mechanical arm, the foaming agent injection port of the refrigerator door body is overlapped with the avoiding groove 15 on the movable mold 3, then the fixed mold 2 is driven to move towards the first direction by the travelling mechanism, and the movable mold 3 is driven to move together by the fixed mold 2, as shown in fig. 4; until the trigger piece 9 on which the fixed die 2 moves is blocked with the nozzle 1, the avoiding groove 15 and the injection opening are positioned right below the nozzle 1 and aligned with the nozzle 1, and refer to fig. 5; along with the running mechanism, the moving die 3 is continuously driven to move along the first direction, the moving die 3 is abutted with the limiting plate 16, the moving die 3 can not move in the first direction any more, only the fixed die 2 carries the refrigerator door body and the trigger piece 9 carries the nozzle 1 to move in the first direction together, the nozzle 1 slides on the guide rail 4 to drive the vertical rod 7 to slide downwards along the inclined section 5.1 of the slide guiding rod 5, so that the slide guiding rod 5 drives the nozzle 1 to move downwards relative to the moving die 3, namely the nozzle 1 moves horizontally and descends, the nozzle 1 passes through the avoidance groove 15 and then is inserted into an injection port of the refrigerator door body, at the moment, the vertical rod 7 just moves to the joint of the inclined section 5.1 and the horizontal section 5.2, then the running mechanism drives the fixed die 2 to move in the first direction, the vertical rod 7 slides to the horizontal section 5.2, and the fixed die 2 and the nozzle 1 together towards the moving die 3, and see fig. 6; until the fixed die 2 and the movable die 3 are clamped, at this time, the sliding pin 1001 is just aligned to the limit groove 1003 on the guide rod 11, the elastic force of the elastic piece 1002 makes the sliding pin 1001 insert into the limit groove 1003, and the movable die 3 and the fixed die 2 are locked together, see fig. 7; then the foaming agent can be injected into the refrigerator door body through the nozzle 1; after the foaming agent is injected, the movable mould 3 is driven to move to an initial position in the opposite direction of the first direction through the travelling mechanism, the sliding pin 1001 is moved upwards after the foaming is not finished to unlock the movable mould 3 and the fixed mould 2, the demoulding can be realized only by sliding the movable mould 3 away from the fixed mould 2, during the period, the nozzle 1 moves along with the fixed mould 2 under the action of the magnetic attraction piece until the nozzle 1 is reset to the initial position on the guide rail 4 and limited, and when the fixed mould 2 slides over the initial position corresponding to the nozzle 1, the driving force of the travelling mechanism to the fixed mould 2 is greater than the magnetic attraction force of the magnetic attraction piece between the trigger piece 9 and the nozzle 1, so that the trigger piece 9 is forcedly separated from the nozzle 1.
The refrigerator door foaming mechanism provided by the application can automatically realize translation, die assembly and butt joint of the foaming agent nozzle 1 of the refrigerator door by only arranging one driving source of the travelling mechanism, has smooth action and high efficiency, does not need to be provided with electronic components such as a sensor and the like, and has low failure rate.
In another embodiment of the present application, the nozzle 1 is a passive interlocking nozzle 1, and includes a pipe body 101, a material nozzle 102, a first spring 103, a sliding portion 104, a valve plug 105, a second spring 106, and a wedge-shaped rod 107, where the pipe body 101 is fixedly connected with the sliding seat 6 through a mounting member 113, the material nozzle 102 is sleeved at one end of the pipe body 101 along the axial direction of the pipe body 101 in a sliding manner, the material nozzle 102 has a material inlet and a material outlet, the inner wall of the material inlet of the material nozzle 102 and the circumferential side of the valve plug 105 are all in a cone shape, a limit ring 112 is fixedly arranged at the circumferential side of the material nozzle 102, one side of the limit ring 112 can be in blocking fit with the end of the pipe body 101, and the other side of the limit ring 112 can be in blocking fit with the injection inlet of the refrigerator door; the process of restoring the deformation of the first spring 103 drives the material nozzle 102 to slide in a direction away from the pipe body 101, and specifically, the pipe body 101 and the material nozzle 102 are respectively provided with a spring groove for installing the first spring 103, the first spring 103 is movably sleeved on the material nozzle 102, and two ends of the first spring 103 are respectively abutted in one spring groove.
The sliding part 104 is arranged in the pipe body 101 in a sliding way, the sliding part 104 is provided with an inclined cone side surface, the sliding part 104 is provided with a channel, namely, the sliding part 104 divides the pipe body 101 into two sections of pipe cavities, the channel is arranged along the axial direction parallel to the pipe body 101, and the channel is communicated with the two sections of pipe cavities; the valve plug 105 is fixedly connected to the sliding portion 104 through a connecting rod 114, a closing station for closing the feed inlet of the material nozzle 102 is arranged in the process of relative movement of the valve plug 105 and the material nozzle 102, the process of restoring deformation of the second spring 106 drives the valve plug 105 and the material nozzle 102 to move relatively to the closing station, specifically, the second spring 106 is arranged along the axial direction of the pipe body 101, one end of the second spring 106 is fixedly connected with the sliding portion 104, and the other end of the second spring 106 is fixedly connected with the pipe body 101.
The wedge-shaped rod 107 is arranged on the pipe body 101 in a penetrating sliding manner along the radial direction of the pipe body 101, the wedge-shaped end of the wedge-shaped rod 107 is in sliding contact and matched with the inclined cone side surface, the wedge-shaped rod 107 slides relative to the pipe body 101 by extruding the wedge-shaped rod 107, the wedge-shaped end extrudes the inclined cone side surface of the sliding part 104, so that the sliding part 104 slides relative to the pipe body 101, and the sliding part 104 can drive the valve plug 105 to move together through the connecting rod 114; further, an arc-shaped pressing sheet 111 is fixedly connected to the wedge-shaped rod 107, and the arc-shaped pressing sheet 111 can facilitate the movable die 3 or the fixed die 2 to be extruded to the wedge-shaped rod 107 during die assembly; further, the wedge-shaped rod 107 is provided with a limiting part 110 for limiting the wedge-shaped rod 107 from sliding away from the pipe body 101, and the limiting part 110 can prevent the wedge-shaped rod 107 from falling off from the pipe body 101.
As a preferable technical scheme, a first corrugated expansion pipe 108 is arranged between one end of the sliding part 104 and the inner wall of the pipe body 101, a second corrugated expansion pipe 109 is arranged between the other end of the sliding part 104 and the material nozzle 102, and the arrangement of the first corrugated expansion rod and the second corrugated expansion rod can increase the smoothness of the foaming agent passing through the pipe body 101, reduce the clamping and increase the sealing effect, and can also improve the sensitivity of unlocking and locking of the nozzle 1.
Compared with the prior art, when the nozzle 1 injects foaming agent, the nozzle 102 needs to be inserted into the injection port of the refrigerator door body, the nozzle 102 slides to the limit position relative to the pipe body 101 to be in contact with the pipe body 101, meanwhile, the movable mold 3 and the fixed mold 2 are required to be clamped to cover the refrigerator door body, the wedge-shaped rod 107 is triggered to squeeze the sliding part 104 during clamping, and the sliding part 104 enables the valve plug 105 to be separated from the closing station through the connecting rod 114, so that the nozzle 102 is communicated with the pipe body 101 for injection. The nozzle 1 performs interlocking through mutual matching among parts, so that the probability of false touch is extremely low, the safety coefficient is high, on one hand, even if the material nozzle 102 is inserted into the injection port of the refrigerator door body under the condition that mold closing is not completed, the material nozzle 102 only slides upwards relative to the pipe body 101 to be in contact with the pipe body 101, and the nozzle 1 cannot be unlocked and injected due to the lack of the action of the mold closing trigger wedge-shaped rod 107, and referring to fig. 11; on the other hand, when the refrigerator door is leaked in the fixed mold 2, even if the fixed mold 2 and the movable mold 3 are clamped, only the wedge-shaped rod 107 is triggered, but the nozzle 102 cannot be triggered to slide upwards relative to the pipe body 101 to be abutted with the pipe body 101, and the nozzle 1 is not unlocked and injected, see fig. 12. In addition, the nozzle 1 is completely passively unlocked and locked, and has sensitive feedback and convenient use.
In this embodiment, when the movable mold 3 and the fixed mold 2 are in the mold opening state, the vertical rod 7 is kept in abutment with the inclined section 5.1 of the slide guiding rod 5, the bottom of the nozzle 1 is higher than the height of the movable mold 3 and the fixed mold 2, the valve plug 105 is in a closing station by the elasticity of the second spring 106, the elastic material nozzle 102 of the first spring 103 is not in abutment with the pipe body 101, see fig. 9, then a refrigerator door body to be foamed is nested into the fixed mold 2 by a manual or mechanical arm, the foaming agent injection port of the refrigerator door body coincides with the avoiding groove 15 on the movable mold 3, then the fixed mold 2 is driven to move in a first direction by a travelling mechanism, and the movable mold 3 is driven to move together by the fixed mold 2, see fig. 4; until the trigger piece 9 on which the fixed die 2 moves is blocked with the nozzle 1, the avoiding groove 15 and the injection opening are positioned right below the nozzle 1 and aligned with the material nozzle 102, see fig. 5; along with the running mechanism, the moving die 3 is continuously driven to move along the first direction, the moving die 3 is abutted against the limiting plate 16, the moving die 3 cannot move along the first direction any more, only the fixed die 2 is driven to move along the refrigerator door body, the trigger piece 9 is driven to move along the nozzle 1 along the first direction, the nozzle 1 slides on the guide rail 4 to drive the vertical rod 7 to slide downwards along the inclined section 5.1 of the slide guiding rod 5, the slide guiding rod 5 drives the nozzle 1 to move downwards relative to the moving die 3, namely, the nozzle 1 moves downwards in a translation mode, the material nozzle 102 of the nozzle 1 passes through the avoidance groove 15 and is inserted into an injection port of the refrigerator door body, the material nozzle 102 upwards slides to a limiting position relative to the pipe body 101 and is abutted against the pipe body 101, the material nozzle 102 drives the sliding part 104 to move along through the connecting rod 114, meanwhile, the first spring 103 is further compressed, and then the vertical rod 7 just moves to the junction of the inclined section 5.1 and the horizontal section 5.2, and then the running mechanism drives the fixed die 2 to move along the first direction until the vertical rod 7 slides to the horizontal section 5.2, and the fixed die 2, the refrigerator door body and the nozzle 1 move towards the moving die 3, see fig. 6; until the fixed die 2 and the movable die 3 are clamped, at this time, the sliding pin 1001 is just aligned with the limit groove 1003 on the guide rod 11, the elastic force of the elastic piece 1002 makes the sliding pin 1001 insert into the limit groove 1003, the movable die 3 and the fixed die 2 are locked together, see fig. 7, and the movable die 3 presses the arc-shaped piece to make the wedge rod 107 press the sliding part 104, so that the sliding part 104 moves downwards further against the elastic force of the second spring 106, and the sliding part 104 drives the valve plug 105 to be separated from the sealing station through the connecting rod 114, see fig. 10; then the foaming agent can be injected into the refrigerator door body through the nozzle 1; after the foaming agent is injected, the movable mould 3 is driven to move to an initial position in the opposite direction of the first direction through the travelling mechanism, the sliding pin 1001 is moved upwards after the foaming is not finished to unlock the movable mould 3 and the fixed mould 2, the demoulding can be realized only by sliding the movable mould 3 away from the fixed mould 2, during the period, the nozzle 1 moves along with the fixed mould 2 under the action of the magnetic attraction piece until the nozzle 1 is reset to the initial position on the guide rail 4 and limited, the nozzle 1 is unlocked under the action of the elastic force of the first spring 103 and the second spring 106, and when the fixed mould 2 slides over the initial position corresponding to the nozzle 1, the driving force of the travelling mechanism to the fixed mould 2 is larger than the magnetic attraction force of the magnetic attraction piece between the trigger piece 9 and the nozzle 1, so that the trigger piece 9 is forcedly separated from the nozzle 1.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (10)
1. A refrigerator door foaming mechanism, comprising:
the fixed die is fixedly arranged on a travelling mechanism, and the travelling mechanism is provided with a first stroke for performing horizontal linear reciprocating motion;
the movable die is connected to the fixed die in a sliding manner along the first stroke direction, and covers the refrigerator door body to be foamed when the movable die and the fixed die are matched;
the limiting plate is fixedly connected with the fixed foundation, and can limit the movement stroke of the movable die;
the guide rail is fixedly connected to the fixed foundation;
the guide slide bar is fixedly connected to the guide rail and comprises an inclined section and a horizontal section which are connected, and the horizontal section is lower than the inclined section;
the sliding seat is connected to the guide rail in a sliding manner along the first stroke direction;
the vertical rod is vertically arranged on the sliding seat in a sliding way, and the top of the vertical rod is in sliding connection with the guide sliding rod;
the nozzle is fixedly connected to the vertical rod, and the movable die and/or the fixed die are provided with avoiding grooves through which the nozzle can pass;
the elastic unit is used for enabling the top of the vertical rod to be abutted on the guide slide rod by the elastic force;
the trigger piece is fixedly connected to the fixed die and has a trigger stroke blocked with the nozzle in the moving process of following the fixed die;
and a locking assembly which is assembled to lock the movable mold and the fixed mold when they are clamped.
2. The refrigerator door foaming mechanism according to claim 1, wherein the fixed die is fixedly connected with a guide rod, the movable die is fixedly connected with a sliding sleeve, and the sliding sleeve is arranged on the guide rod in a sliding sleeve mode.
3. The refrigerator door foaming mechanism according to claim 1, wherein a roller is arranged at the top of the vertical rod and is in rolling connection with the guide slide rod.
4. The refrigerator door foaming mechanism according to claim 1, wherein the elastic unit comprises a first pressure spring, the first pressure spring is movably sleeved on the vertical rod, the upper end of the first pressure spring is fixedly connected with the top of the vertical rod, and the lower end of the first pressure spring is fixedly connected with the sliding seat.
5. The refrigerator door foaming mechanism of claim 1, wherein the trigger member is arc-shaped to fit the tube of the nozzle.
6. The refrigerator door foaming mechanism as claimed in claim 1, wherein the lower end of the nozzle is tapered.
7. The refrigerator door foaming mechanism according to claim 2, wherein the locking assembly comprises a sliding pin and an elastic piece, the sliding pin is arranged on the movable mould in a sliding manner, the elastic force of the elastic piece enables the sliding pin to be abutted on a guide rod, and a limit groove is formed in the guide rod; when the die is assembled, the elastic force of the elastic piece enables the sliding pin to be inserted into the limit groove.
8. The refrigerator door foaming mechanism according to claim 7, wherein the elastic member comprises a second compression spring, one end of the second compression spring is fixedly connected with the sliding pin, and the other end of the second compression spring is fixedly connected to the movable mold through the connecting block.
9. The door foaming mechanism of claim 7, wherein the sliding structure comprising the guide rod and the sliding sleeve has two groups, the locking pieces have two groups, and the two locking pieces are correspondingly matched with the two sliding structures one by one.
10. The refrigerator door foaming mechanism according to claim 9, wherein a connecting rod is fixedly connected between the sliding pins of the two locking pieces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310949115.4A CN116714168B (en) | 2023-07-31 | 2023-07-31 | Refrigerator door foaming mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310949115.4A CN116714168B (en) | 2023-07-31 | 2023-07-31 | Refrigerator door foaming mechanism |
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| CN116714168B CN116714168B (en) | 2023-11-14 |
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| KR101379946B1 (en) * | 2013-04-09 | 2014-04-01 | 에이테크솔루션(주) | Fixture for bubbling mold of refrigerator door having means for preventing deformation of frame |
| CN113119383A (en) * | 2019-12-30 | 2021-07-16 | 青岛合润机械工程技术有限公司 | Novel refrigerator door foaming production line |
| CN113752462A (en) * | 2021-09-03 | 2021-12-07 | 滁州佳诚模具制造有限公司 | Mold opening device of refrigerator door foaming mold |
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