CN109093945B - Motor main gear processing mould - Google Patents
Motor main gear processing mould Download PDFInfo
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- CN109093945B CN109093945B CN201811284358.6A CN201811284358A CN109093945B CN 109093945 B CN109093945 B CN 109093945B CN 201811284358 A CN201811284358 A CN 201811284358A CN 109093945 B CN109093945 B CN 109093945B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000003754 machining Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000274582 Pycnanthus angolensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000000149 penetrating 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
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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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
- B29L2001/00—Articles provided with screw threads
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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
- B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
- B29L2015/003—Gears
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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 provides a mold for machining a main gear of a motor, relates to the technical field of automobile motor accessories, and aims to accelerate the demolding efficiency and the molding quality of the main gear. The technical scheme is characterized by comprising an upper die body and a lower die body, wherein an upper inner die and a lower inner die are respectively arranged on one sides of the upper die body and the lower die body, which are close to each other, and a cavity is formed between the upper inner die and the lower inner die; the method is characterized in that: a plurality of vertically arranged threaded cores are arranged in the linear array in the lower die body, nuts in threaded connection with the threaded cores are fixed in the lower die body, and the upper ends of the threaded cores are positioned in the lower inner die; the outer side wall of the upper die body is fixedly provided with a screw sleeve which is vertically arranged and penetrates through the two ends, a screw rod which is vertically arranged is rotatably arranged on the outer side wall of the lower die body in a positioning way, and the screw rod is in threaded connection with the screw sleeve; a transmission mechanism is arranged between the screw and the threaded core. According to the invention, the threaded mold core is rotated to withdraw from the main gear while the mold is opened, and the processing of the internal threads on the main gear is realized in the withdrawing process.
Description
Technical Field
The invention relates to the technical field of automobile motor accessories, in particular to a mold for machining a motor main gear.
Background
In an automatic dimming motor for an automobile headlight, a main gear with internal threads is fixed, and the main gear is required to be processed with the internal threads during injection molding. The main gear processing mould used in the prior art is provided with a thread core in the mould to form internal threads in the main gear; however, when the die is opened, the die cannot be directly opened, otherwise, when the lower die body drives the threaded core to move downwards, the internal threads in the main gear are pulled out.
In order to solve the above problems, chinese patent with the grant publication number CN104647699B discloses an injection mold for manufacturing an internal thread knob, a fixed mold seat plate is connected with a water gap push plate, the water gap push plate is connected with a fixed mold plate, a front inner mold is arranged on the fixed mold plate, the fixed mold plate is connected with a movable mold plate, a rear inner mold is arranged on the movable mold plate, the movable mold plate is connected with a push plate, the push plate is connected with a support plate, the support plate is connected with a threaded core bottom plate, the threaded core bottom plate is connected with a movable mold seat plate, a threaded core is arranged between the front inner mold, the rear inner mold, the movable mold plate, the push plate and the support plate, and a main transmission gear is arranged between the push plate, the support plate, the threaded core bottom plate and the movable mold seat plate. The hydraulic motor drives the main transmission gear, the main transmission gear drives the threaded core, the threaded end part of the threaded core is arranged in the cavity, and the classifying spring mechanism is arranged among the fixed die plate, the movable die plate and the push plate. The injection mold provides stable rotation power for the threaded mold core through the hydraulic motor, and the threaded mold core is separated from the internal thread knob plastic part product through rotation.
However, when the injection mold is opened, the fixed mold plate is fixed, the movable mold plate is far away from the fixed mold plate to realize the mold opening, and then the hydraulic motor system is used for driving the threaded mold core to rotate, so that the internal thread knob is separated from the threaded mold core. In this way, the mold is opened first to separate the product, so that the time is relatively long and the efficiency is low.
Disclosure of Invention
The invention aims to provide a mold for machining a main gear of a motor, which can separate a threaded core from the main gear while opening the mold, and can machine internal threads in the main gear in the process of rotating the mold to separate from the main gear, so that the injection molding production efficiency of the main gear is greatly improved.
The technical aim of the invention is realized by the following technical scheme:
the die for machining the motor main gear comprises an upper die body and a lower die body, wherein an upper inner die and a lower inner die are respectively arranged on one sides, close to each other, of the upper die body and the lower die body, and a cavity is formed between the upper inner die and the lower inner die; the linear array in the lower die body is provided with a plurality of vertically arranged threaded cores, nuts in threaded connection with the threaded cores are fixed in the lower die body, and the upper ends of the threaded cores are positioned in the lower inner die; the outer side wall of the upper die body is fixedly provided with a screw sleeve which is vertically arranged and penetrates through the two ends, a screw rod which is vertically arranged is rotatably arranged on the outer side wall of the lower die body in a positioning mode, and the screw rod is in threaded connection with the screw sleeve; and a transmission mechanism is arranged between the screw and the threaded mold core.
By adopting the technical scheme, the injection molding machine injects raw materials into the cavity, and the main gear is molded in the cavity and sleeved outside the threaded core. When the mold is opened, the injection molding machine drives the upper mold body and the lower mold body to move in a direction away from each other, so that the mold is opened. The screw rod moves back along with the lower die body and rotates by self positioning under the threaded connection effect of the screw rod and the threaded sleeve while the upper die body and the lower die body move. In the process of screw rotation, the threaded mold core is driven to rotate through the transmission mechanism. At this time, under the action of the threaded connection of the threaded core and the nut, the threaded core rotates one side to slide along the axial direction of the threaded core, so that the threaded core is separated from the main gear, and meanwhile, the internal thread of the main gear is machined in the rotating process. The injection molding production efficiency of the main gear is greatly improved through the process.
Further, the transmission mechanism comprises a large gear which is coaxially arranged with the screw rod and fixedly arranged at the lower end of the screw rod, a small gear which is coaxially arranged with the threaded core and is installed in the lower die body in a positioning and rotating mode is clamped at the lower end of the threaded core, and a transmission gear which is installed in the lower die body in a positioning and rotating mode is arranged between the large gear and the small gear.
By adopting the technical scheme, the large gear is positioned and rotated along with the rotation of the screw rod, and the pinion is driven to rotate under the transmission action of the transmission gear. When the pinion rotates, the threaded core clamped with the pinion is driven to rotate; at this moment, under the threaded connection effect of the threaded core and the nut, the threaded core can rotate along with the threaded core to axially move to push out the main gear, and the internal threads in the main gear are machined, so that the threaded core is simple in structure and obvious in effect.
Further, the transmission gear includes a first gear engaged with the large gear and a second gear engaged with the small gear, and the first gear and the second gear are engaged with each other.
Through adopting above-mentioned technical scheme, the gear wheel drives first gear and rotates, and first gear drives the second gear and rotates, and the second gear drives the pinion and rotates. The multi-stage gear transmission is adopted, the transmission ratio is ensured, the sizes of the large gear, the small gear and the transmission gear are effectively reduced, the occupied space is reduced, the requirement on the volume of the lower die body is reduced, and the multi-stage gear transmission device is simple in structure and obvious in effect.
Further, a thimble panel and a thimble bottom plate are arranged in the lower die body, and a jacking pipe sleeved outside the threaded core is fixed on the thimble panel; the upper end surface of the thimble panel is fixedly provided with a vertically arranged return rod, the lower end face of the thimble bottom plate is fixedly provided with a vertically arranged ejector rod.
Through adopting above-mentioned technical scheme, after the die sinking, the top roller on the injection molding machine stretches into in the lower mould, with the lower terminal surface butt of ejector pin, the top roller upwards promotes ejector pin bottom plate and thimble panel together, and the top pipe upwards moves to the ejecting lower centre form of main gear to take out the main gear. When the die is assembled, under the action of the mutual thrust of the upper die body and the lower die body, the return rod pushes the thimble panel and the thimble bottom plate back for resetting, so that the reset of the jacking pipe is realized.
Further, the lower die body comprises a lower bottom plate and a die frame bottom plate positioned above the lower bottom plate, a gear box plate is arranged between the die frame bottom plate and the lower bottom plate, and the first gear, the second gear and the pinion are all positioned and rotatably installed in the gear box plate.
Through adopting above-mentioned technical scheme, with first gear, second gear and pinion location rotation install in the gear box board, when the installation like this only need guarantee first gear and gear wheel meshing, screw thread core and pinion joint can, convenient quick installation.
Further, a backing plate is arranged between the gear box plate and the die carrier bottom plate, and the lower bottom plate, the gear box plate, the backing plate and the die carrier bottom plate are detachably connected.
By adopting the technical proposal, the backing plate effectively protects the gear box plate, avoids the gear box plate from being crushed due to the overweight structure at the upper end of the gear box plate, the service lives of the gear box plate, a transmission gear in the gear box plate and a pinion are guaranteed. The lower bottom plate, the gear box plate, the backing plate and the die carrier bottom plate are detachably connected, the lower bottom plate, the gear box plate, the base plate and the die carrier bottom plate are convenient to overhaul or replace.
Further, the lower end of the screw sleeve is provided with a boss extending inwards, and the top of the screw is provided with a limit ring matched with the boss.
Through adopting above-mentioned technical scheme, under the spacing effect of boss to the spacing collar, avoid breaking away from the swivel nut at the die sinking in-process screw rod, reset the screw mandrel when influencing the compound die, its simple structure, the effect is obvious.
Further, the bottom of the screw rod is clamped with a positioning bearing seat which is detachably and fixedly arranged on the lower die body, and a plurality of tapered rollers surrounding the periphery of the screw rod are arranged in the positioning bearing seat in a rolling manner.
Through adopting above-mentioned technical scheme, under the effect of location bearing frame, realize dismantling the location with the screw rod and install on the lower die body. The tapered rollers arranged on the periphery of the screw rod in the inner periphery of the positioning bearing seat can enable the positioning bearing seat to bear large axial load, so that the service life of the positioning bearing seat is effectively ensured, and the replacement period of the positioning bearing seat is shortened.
Further, a pressing plate which is clamped with the screw sleeve is detachably and fixedly arranged on one side of the upper die body; the inner wall of the pressing plate is provided with a convex clamping block, and the outer wall of the screw sleeve is provided with a clamping groove matched with the clamping block.
By adopting the technical scheme, the screw sleeve is detachably and fixedly arranged on the upper die body, so that the assembly of the screw sleeve is convenient. Under the cooperation of the clamping blocks and the clamping grooves, the screw sleeve is prevented from moving relatively with the upper die body and the pressing plate, and the stability of the fixed installation of the screw sleeve is ensured.
Further, the upper end face of the upper die body is provided with a positioning ring, a point gate is arranged on the upper inner die corresponding to each threaded core, and a feeding pipe is communicated between the positioning ring and the point gate.
By adopting the technical scheme, the pouring nozzle of the injection molding machine can be ensured to be smoothly clamped with the invention under the action of the positioning ring. The injection molding machine performs a pouring program on raw materials from an injection nozzle at the positioning ring to enter the cavity from the point gate through the feeding pipe, and the injection molding machine has the advantages of simple structure, convenient operation and obvious effect.
In summary, the invention has the following beneficial effects:
1. the threaded core is in threaded connection with a nut fixed in the upper die body, and is driven by the transmission mechanism, so that the threaded core rotates along the axial sliding direction along one side and is separated from the main gear, and meanwhile, the internal thread of the main gear is processed in the rotation process, thereby greatly improving the injection molding production efficiency of the main gear;
2. through setting up the push pipe in the lower mould body, conveniently ejecting the master gear from lower centre form after the die sinking, simple structure and convenient operation improve master gear demolding efficiency.
Drawings
FIG. 1 is a schematic view showing the overall structure of a mold for machining a motor main gear, for embodying a mold-closed state;
FIG. 2 is a cross-sectional view of a motor main gear processing mold;
FIG. 3 is a partial cross-sectional view of a motor main gear processing mold;
FIG. 4 is a schematic view showing a part of a mold for processing a main gear of a motor;
fig. 5 is a schematic view showing the overall structure of a mold for processing a motor main gear, for showing the mold-open state.
In the figure, 1, an upper die body; 2. a lower die body; 3. an upper panel; 31. a positioning ring; 4. a formwork panel; 41. an upper cavity plate; 5. an upper internal mold; 51. a pin gate; 52. a feeding pipe; 6. a lower internal mold; 7. a threaded core; 71. a pinion gear; 72. a nut; 8. jacking pipes; 81. a thimble panel; 811. a return bar; 82. a thimble bottom plate; 821. a push rod; 9. a die carrier bottom plate; 91. a lower cavity plate; 92. a cushion block; 10. a backing plate; 11. a gear box plate; 111. a first gear; 112. a second gear; 12. a lower base plate; 13. a screw; 131. a limit ring; 132. a large gear; 133. positioning a bearing seat; 1331. tapered rollers; 14. a screw sleeve; 141. a boss; 142. a pressing plate; 1421. a clamping block; 143. a clamping groove.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, the mold for machining a motor main gear comprises an upper mold body 1 and a lower mold body 2, wherein the upper mold body 1 comprises an upper panel 3, a mold frame panel 4 and an upper mold cavity plate 41 which are sequentially arranged from top to bottom; the lower die body 2 includes a lower base plate 12, a die carrier base plate 9, and a lower cavity plate 91, which are disposed in this order from bottom to top. Referring to fig. 2, an upper inner mold 5 having a downward opening is provided on a lower end surface of the upper cavity plate 41, and a sprue 51 is provided in the upper inner mold 5. A lower inner die 6 which is provided with an upward opening and is matched with the upper inner die 5 is arranged on the upper end surface of the lower die cavity plate 91; a cavity is formed between the upper inner die 5 and the lower inner die 6. Referring to fig. 1 and 2, in which a nozzle sprue 51 of an injection molding machine is provided at a central position of an upper panel 3 for convenience, a positioning ring 31 is provided, and a feed pipe 52 communicating the positioning ring 31 and the sprue 51 is provided therebetween.
Referring to fig. 1, a vertically arranged screw sleeve 14 with two ends penetrating is detachably and fixedly installed on one side wall of the upper panel 3 along the length direction, a pressing plate 142 which is matched with the screw sleeve 14 and is fixed on the upper panel 3 through screws (not shown) is arranged on one side of the screw sleeve 14 away from the upper panel 3, and the screw sleeve 14 is fixed on the upper panel 3 under the matched action of the pressing plate 142 and the upper panel 3. Referring to fig. 3, an outer protruding clamping block 1421 is provided on an inner wall of the pressing plate 142, and a clamping groove 143 matching with the clamping block 1421 is provided on an outer wall of the screw sleeve 14. Under the limiting action of the clamping block 1421 on the clamping groove 143, the relative movement between the screw sleeve 14 and the upper panel 3 and the pressing plate 142 is avoided, and the stability of the screw sleeve 14 fixedly installed on the upper panel 3 is ensured.
Referring to fig. 2, a screw 13 is rotatably installed at one side wall of the lower base plate 12 in a fixed position along a length direction thereof, and the screw 13 is screw-coupled in a screw sleeve 14. Wherein the screw 13 is installed on the lower base plate 12 in a positioning and rotating manner through a positioning bearing seat 133, and the positioning bearing seat 133 is detachably and fixedly installed on the lower base plate 12 through bolts (not shown). Meanwhile, referring to fig. 3, a plurality of tapered rollers 1331 surrounding the periphery of the screw 13 are installed in the positioning bearing seat 133 in a rolling manner, so that the axial load of the positioning bearing seat 133 can be greatly improved, the service life of the positioning bearing seat 133 is ensured, and the replacement period of the positioning bearing seat 133 is shortened.
Referring to fig. 3, a boss 141 extending inward is provided at a lower end of the screw sleeve 14, and a stopper 131 engaged with the boss 141 is provided at a top of the screw 13. Under the limiting action of the boss 141 on the limiting ring 131, the screw 13 is prevented from being separated from the screw sleeve 14. In addition, the limit ring 131 is detachably fixed on the top of the screw 13 through screws (not marked in the figure), so that the screw 13 can be installed into the screw sleeve 14 from the lower part of the screw sleeve 14, and then the limit ring 131 is fixed on the screw 13 from the upper part of the screw sleeve 14, thereby facilitating the assembly of the invention.
Referring to fig. 2, a plurality of vertically arranged screw cores 7 are linearly arranged in the lower mold body 2 along the length direction thereof, and referring to fig. 2 and 4, in this embodiment, four screw cores 7 are linearly arranged, and the upper ends thereof extend into the lower inner mold 6, and each screw core 7 corresponds to one sprue 51. Referring to fig. 2 and 4, each of the screw cores 7 is externally screw-coupled with a nut 72 fixed in the mold frame base plate 9. A transmission mechanism is arranged between the screw 13 and the threaded core 7, and when the screw 13 rotates, the threaded core 7 is driven to rotate synchronously with the screw through the transmission mechanism.
Referring to fig. 2, the injection molding machine injects raw materials into a cavity, the raw materials flow from a sprue 51 into the cavity through a feed pipe 52, and a main gear is molded in the cavity and sleeved outside a threaded core 7. Referring to fig. 2 and 5, when the mold is opened, the injection molding machine drives the upper mold body 1 and the lower mold body 2 to move away from each other, and the mold is opened. While the upper die body 1 and the lower die body 2 move, under the threaded connection effect of the screw 13 and the threaded sleeve 14, the screw 13 positions and rotates along with the backward movement of the lower die body 2. During the rotation of the screw 13, the threaded core 7 is driven to rotate by the transmission mechanism. At this time, the threaded core 7 is disengaged from the main gear by rotating the threaded core 7 while sliding in the axial direction thereof by the threaded connection of the threaded core 7 and the nut 72. Meanwhile, the internal thread of the main gear is machined during the rotation of the thread core 7. The process takes out the threaded core 7 from the main gear while opening the die, and simultaneously processes the internal threads of the main gear, so that the injection molding production efficiency of the main gear is greatly improved.
In order to drive the threaded cores 7 to synchronously rotate along with the screw 13 while rotating, referring to fig. 2, the transmission mechanism comprises a large gear 132 coaxially arranged with the screw 13 and fixedly arranged at the lower end of the screw 13, a small gear 71 coaxially arranged with the threaded cores 7 and installed in the lower die body 2 in a positioning and rotating manner is clamped at the lower end of each threaded core 7, and a transmission gear installed in the lower die body 2 in a positioning and rotating manner is arranged between the large gear 132 and the small gear 71. Referring to fig. 2, the transmission gear includes a first gear 111 engaged with the large gear 132 and a second gear 112 engaged with the small gear 71, and the first gear 111 and the second gear 112 are engaged with each other. Referring to fig. 4, in the present embodiment, two adjacent pinions 71 are meshed with one second gear 112, and two second gears 112 are meshed with one first gear 111, so as to reduce the number of transmission gears and reduce the occupied volume.
In the present embodiment, in order to facilitate the installation of the transmission gear, referring to fig. 2 and 4, a gear box plate 11 is detachably and fixedly installed between the lower base plate 12 and the mold base plate 9 by bolts (not shown in the drawings), the first gear 111, the second gear 112 and the pinion 71 are all rotatably installed in the gear box plate 11 by positioning through bearing seats (not shown in the drawings), and the threaded core 7 is engaged with the pinion 71 by splines (not shown in the drawings). Referring to fig. 1 or 2, a backing plate 10 is detachably mounted between the gear box plate 11 and the mold base plate 9 by bolts (not shown), so that the gear box plate 11, the transmission gear and the pinion 71 are protected.
In order to facilitate taking out the main gear from the lower inner mold 6 after the threaded core 7 is separated from the main gear, a cushion block 92 is symmetrically arranged between a lower cavity plate 91 and a mold frame bottom plate 9 with reference to fig. 2, and a thimble panel 81 and a thimble bottom plate 82 sleeved outside the threaded core 7 are vertically and slidably arranged between the two cushion blocks 92. Referring to fig. 2, a push pipe 8 is fixed to a thimble panel 81 and is fitted over the threaded core 7. Referring to fig. 4, a return bar 811 which is vertically provided and can pass through the lower cavity plate 91 is fixed to the upper end surface of the ejector plate 81, and an ejector pin 821 which is vertically provided and passes through the gear box plate 11 is fixed to the lower end surface of the ejector plate 82.
Referring to fig. 2 and 4, after the mold is opened, a top roller on the injection molding machine extends into the lower base plate 12 to be in contact with the lower end surface of the top rod 821, the top roller pushes the top pin base plate 82 and the top pin panel 81 upwards together, and the top pipe 8 moves upwards until the main gear is ejected out of the lower internal mold 6, so that the main gear is taken out. During die assembly, under the action of the mutual thrust of the upper die body 1 and the lower die body 2, the return rod 811 pushes the thimble panel 81 and the thimble bottom plate 82 back and resets, so that the reset of the jacking pipe 8 is realized. Therefore, the main gear does not need to be manually taken out, so that the demolding efficiency of the main gear is greatly improved, and convenience and trouble saving are realized.
The working principle and the using method of the invention are as follows:
when the mold is opened, the injection molding machine drives the upper mold body 1 and the lower mold body 2 to move away from each other, and the screw 13 moves back along with the lower mold body 2 and positions and rotates. During the rotation of the screw 13, the threaded core 7 is driven to rotate by the transmission mechanism. At this time, the threaded core 7 is disengaged from the main gear by rotating the threaded core 7 while sliding in the axial direction thereof by the threaded connection of the threaded core 7 and the nut 72. Meanwhile, the internal thread of the main gear is machined during the rotation of the thread core 7. After the die is opened, a top roller on the injection molding machine stretches into the lower bottom plate 12 to be abutted with the lower end face of the ejector rod 821, the top pipe 8 is pushed upwards, the top pipe 8 moves upwards to push out the main gear from the lower internal die 6, and therefore the main gear is taken out. During die assembly, under the action of the mutual thrust of the upper die body 1 and the lower die body 2, the return rod 811 pushes the thimble panel 81 and the thimble bottom plate 82 back and resets, so that the reset of the jacking pipe 8 is realized.
While the foregoing description illustrates and describes the preferred embodiments of the present invention, as noted above, it is to be understood that the invention is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (7)
1. The die for machining the motor main gear comprises an upper die body (1) and a lower die body (2), wherein an upper inner die (5) and a lower inner die (6) are respectively arranged on one side, close to each other, of the upper die body (1) and the lower die body (2), and a cavity is formed between the upper inner die (5) and the lower inner die (6); the method is characterized in that: a plurality of vertically arranged threaded cores (7) are arranged in the lower die body (2) in a linear array manner, nuts (72) in threaded connection with the threaded cores (7) are fixed in the lower die body (2), and the upper ends of the threaded cores (7) are positioned in the lower inner die (6); the outer side wall of the upper die body (1) is fixedly provided with a screw sleeve (14) which is vertically arranged and penetrates through the two ends, a screw rod (13) which is vertically arranged is rotatably arranged on the outer side wall of the lower die body (2) in a positioning mode, and the screw rod (13) is in threaded connection with the screw sleeve (14); a transmission mechanism is arranged between the screw (13) and the threaded core (7);
the transmission mechanism comprises a large gear (132) which is coaxially arranged with the screw (13) and fixedly arranged at the lower end of the screw (13), a small gear (71) which is coaxially arranged with the threaded core (7) and is positioned and rotatably arranged in the lower die body (2) is clamped at the lower end of the threaded core, and a transmission gear which is positioned and rotatably arranged in the lower die body (2) is arranged between the large gear (132) and the small gear (71);
the transmission gear comprises a first gear (111) meshed with the large gear (132) and a second gear (112) meshed with the small gear (71), and the first gear (111) and the second gear (112) are meshed with each other;
a thimble panel (81) and a thimble bottom plate (82) are arranged in the lower die body (2), and a jacking pipe (8) sleeved outside the threaded core (7) is fixed on the thimble panel (81); the upper end face of the thimble panel (81) is fixedly provided with a vertically arranged return rod (811), and the lower end face of the thimble bottom plate (82) is fixedly provided with a vertically arranged ejector rod (821).
2. The mold for machining a motor main gear according to claim 1, wherein: the lower die body (2) comprises a lower base plate (12) and a die frame base plate (9) arranged above the lower base plate (12), a gear box plate (11) is arranged between the die frame base plate (9) and the lower base plate (12), and the first gear (111), the second gear (112) and the pinion (71) are all positioned and rotatably arranged in the gear box plate (11).
3. The mold for machining a motor main gear according to claim 2, characterized in that: a backing plate (10) is arranged between the gear box plate (11) and the die carrier bottom plate (9), and the lower bottom plate (12), the gear box plate (11), the backing plate (10) and the die carrier bottom plate (9) are detachably connected.
4. The mold for machining a motor main gear according to claim 1, wherein: the lower end of the screw sleeve (14) is provided with an inwardly extending boss (141), and the top of the screw rod (13) is provided with a limit ring (131) matched with the boss (141).
5. The mold for machining a motor main gear according to claim 1 or 4, characterized in that: the bottom of the screw rod (13) is clamped with a positioning bearing seat (133) which is detachably and fixedly arranged on the lower die body (2), and a plurality of tapered rollers (1331) which are arranged around the periphery of the screw rod (13) in a rolling manner are arranged in the positioning bearing seat (133).
6. The mold for machining a motor main gear according to claim 1, wherein: a pressing plate (142) clamped with the screw sleeve (14) is detachably and fixedly arranged on one side of the upper die body (1); the inner wall of the pressing plate (142) is provided with a convex clamping block (1421), and the outer wall of the screw sleeve (14) is provided with a clamping groove (143) matched with the clamping block (1421).
7. The mold for machining a motor main gear according to claim 1, wherein: the upper end face of the upper die body (1) is provided with a positioning ring (31), a point gate (51) is arranged on the upper inner die (5) corresponding to each threaded core (7), and a feeding pipe (52) is communicated between the positioning ring (31) and the point gate (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284358.6A CN109093945B (en) | 2018-10-31 | 2018-10-31 | Motor main gear processing mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284358.6A CN109093945B (en) | 2018-10-31 | 2018-10-31 | Motor main gear processing mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109093945A CN109093945A (en) | 2018-12-28 |
| CN109093945B true CN109093945B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811284358.6A Active CN109093945B (en) | 2018-10-31 | 2018-10-31 | Motor main gear processing mould |
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| Country | Link |
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| CN (1) | CN109093945B (en) |
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| JP5161358B1 (en) * | 2011-10-06 | 2013-03-13 | ファナック株式会社 | Rotating core control device for screw removal mold |
| CN203697401U (en) * | 2013-12-11 | 2014-07-09 | 思柏精密模具注塑（无锡）有限公司 | Precision mold for internal thread component in gear-driven core-pulling form |
| CN204367329U (en) * | 2014-12-24 | 2015-06-03 | 宁波沃德森电气有限公司 | A kind of internal thread automatic core-pulling mould |
| CN206653619U (en) * | 2017-03-13 | 2017-11-21 | 佛山市顺德区百年科技有限公司 | Injection mould with internal thread demolding structure and injection mould with internal thread |
| CN107745484A (en) * | 2017-10-24 | 2018-03-02 | 辽宁中蓝电子科技有限公司 | Mould cuts with scissors tooth mechanism mould before a kind of miniature screw thread |
| JP2018047628A (en) * | 2016-09-22 | 2018-03-29 | 高雄機械株式会社 | Die unit, coupling mechanism, transmission mechanism and regulation mechanism |
| CN209036904U (en) * | 2018-10-31 | 2019-06-28 | 南通合硕电子有限公司 | A kind of motor master gear die for processing |
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2018
- 2018-10-31 CN CN201811284358.6A patent/CN109093945B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5161358B1 (en) * | 2011-10-06 | 2013-03-13 | ファナック株式会社 | Rotating core control device for screw removal mold |
| CN203697401U (en) * | 2013-12-11 | 2014-07-09 | 思柏精密模具注塑（无锡）有限公司 | Precision mold for internal thread component in gear-driven core-pulling form |
| CN204367329U (en) * | 2014-12-24 | 2015-06-03 | 宁波沃德森电气有限公司 | A kind of internal thread automatic core-pulling mould |
| JP2018047628A (en) * | 2016-09-22 | 2018-03-29 | 高雄機械株式会社 | Die unit, coupling mechanism, transmission mechanism and regulation mechanism |
| CN206653619U (en) * | 2017-03-13 | 2017-11-21 | 佛山市顺德区百年科技有限公司 | Injection mould with internal thread demolding structure and injection mould with internal thread |
| CN107745484A (en) * | 2017-10-24 | 2018-03-02 | 辽宁中蓝电子科技有限公司 | Mould cuts with scissors tooth mechanism mould before a kind of miniature screw thread |
| CN209036904U (en) * | 2018-10-31 | 2019-06-28 | 南通合硕电子有限公司 | A kind of motor master gear die for processing |
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| Publication number | Publication date |
|---|---|
| CN109093945A (en) | 2018-12-28 |
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