CN213440944U

CN213440944U - Automatic demoulding mechanism for injection mould

Info

Publication number: CN213440944U
Application number: CN202022067933.6U
Authority: CN
Inventors: 查永国; 李建博
Original assignee: Shanghai Saan Precision Injection Molding Co ltd
Current assignee: Shanghai Saan Precision Injection Molding Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-15
Anticipated expiration: 2030-09-18

Abstract

The utility model belongs to the technical field of the mould technique and specifically relates to an automatic demoulding mechanism for injection mold is related to, its including setting up drawing of patterns subassembly in the bed die, set up at the rack of last mould one end and the gear drive group that links to each other with drawing of patterns subassembly and rack, drawing of patterns subassembly includes the revolving axle and wears to establish the ejector pin in the revolving axle, gear drive group is including lieing in bed die one end and the range regulating gear group of being connected with rack drive and lieing in the inside steering gear group of just being connected with the revolving axle transmission of bed die, range regulating gear group and steering gear group transmission are connected. This application has can shorten the drawing of patterns consuming time, improves production efficiency's effect.

Description

Automatic demoulding mechanism for injection mould

Technical Field

The application relates to the technical field of molds, in particular to an automatic demolding mechanism for an injection mold.

Background

The gear transmission is a common transmission mode in people's life, and its transmission stationarity is very high, and life is longer. With the continuous progress of science and technology, gears made of plastics are more and more, and the gear transmission mechanism is mainly used in an industry with small transmission torque, and is low in production cost, low in transportation cost, safe and convenient to maintain.

As shown in fig. 1, an automatic mold releasing mechanism for an injection mold includes an upper mold and a lower mold. The lower die comprises a lower die holder 1. The top end of the lower die holder 1 is provided with an ejector rod fixing plate 2. The top end of the mandril fixing plate 2 is sequentially provided with a rotating shaft fixing plate 3, a lower backing plate 4 and a lower template 5 along the direction far away from the lower die holder 1, the rotating shaft fixing plate 3 is connected with a rotating shaft 31 in a sliding way, the rotating shaft 31 penetrates through the lower backing plate 4 and the lower template 5, a mandril 21 is arranged in the rotating shaft 31, and one end of the mandril 21 is fixed on the mandril fixing plate 2. The top end of the lower template 5 is provided with a lower template 51. The upper die comprises an upper die base 6. The top of upper die base 6 is equipped with sprue gate 61, and the bottom of upper die base 6 is equipped with upper padding plate 7 and upper die plate 8, and the bottom of upper die plate 8 is equipped with die cavity 81.

In view of the above related technologies, the inventor believes that the mold needs to be separated first during demolding, then the ejector rod is driven to eject the injection molded product, the mold is closed again after being taken out for injection molding, the demolding process is long in time consumption, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to shorten the consuming time of drawing of patterns process, improve production efficiency, this application provides an automatic demoulding mechanism for injection mold.

The application provides a pair of automatic demoulding mechanism for injection mold adopts following technical scheme:

the utility model provides an automatic demoulding mechanism for injection mold, is including setting up drawing of patterns subassembly in the bed die, setting up at the rack of last mould one end and the gear drive group that links to each other with drawing of patterns subassembly and rack, drawing of patterns subassembly includes the revolving axle and wears to establish the ejector pin in the revolving axle, gear drive group is including the range regulating gear group that is located bed die one end and is connected with rack drive and the steering gear group that is located the inside and is connected with revolving axle transmission of bed die, range regulating gear group and steering gear group transmission are connected.

By adopting the technical scheme, the rack drives the gear transmission set to enable the rotating shaft to rotate during demoulding, the rotating shaft slides on the rotating shaft fixing plate along the direction far away from the lower die base when rotating, and drives the ejector rod to move upwards, so that a product is ejected out, and when the upper die and the lower die are separated, the product can be demoulded, so that the demoulding time is shortened, and the production efficiency is improved.

Optionally, the range adjustment gear set includes the driving tooth with rack toothing, the range adjustment tooth subassembly that is connected with the driving tooth transmission and the driven tooth that is connected with the range adjustment tooth subassembly transmission, the range adjustment tooth subassembly includes the one-level gear with driving tooth meshing and the second grade gear that all meshes with one-level gear and driven gear, the second grade gear includes the connection tooth and the range adjustment tooth of coaxial setting, connect tooth and one-level gear engagement, the range adjustment tooth meshes with the driven tooth.

By adopting the technical scheme, the driving teeth are driven to rotate when the rack moves, the driving teeth drive the first-level gear to transmit, the first-level gear drives the connecting teeth to rotate, the range regulating teeth rotate together when the connecting teeth rotate, the range regulating teeth drive the driven teeth to rotate, the angular velocities of the connecting teeth and the range regulating teeth are equal, the linear velocity is increased, and therefore the purpose of range regulation is achieved.

Optionally, the range adjusting gear set is provided with a gear mounting plate, and the gear mounting plate is provided with a transverse deep groove ball bearing for mounting each gear of the range adjusting gear set.

By adopting the technical scheme, the transverse deep groove ball bearing increases the rotating stability of each gear in the range-adjusting gear set.

Optionally, the top end of the gear mounting plate is provided with an inflatable jig.

Through adopting above-mentioned technical scheme, aerify the tool as helping the rotatory appurtenance of control gear for the accuracy of position when guaranteeing each gear meshing, in order to guarantee the steady of transfer gear train operation.

Optionally, the steering gear set comprises a rotary tooth arranged on the rotary shaft and a steering transmission set in transmission connection with the rotary tooth, the steering transmission set is in transmission connection with the driven tooth, the steering transmission set comprises a longitudinal transmission set and a transverse transmission set, the longitudinal transmission set comprises a specially-noted tooth meshed with the rotary tooth, a longitudinal bevel tooth arranged below the specially-noted tooth and a longitudinal transmission shaft connected with the specially-noted tooth and the longitudinal bevel tooth, and the transverse transmission set comprises a transverse bevel tooth meshed with the longitudinal bevel tooth and a transverse transmission shaft connected with the transverse bevel tooth and the driven tooth.

By adopting the technical scheme, when the driven teeth rotate, the transverse transmission shafts simultaneously rotate and drive the transverse bevel teeth to rotate together, the transverse bevel teeth drive the longitudinal bevel teeth to rotate so as to realize steering, when the longitudinal bevel teeth rotate, the longitudinal transmission shafts simultaneously rotate and drive the special injection teeth to rotate, the special injection teeth drive the rotary teeth to rotate, when the rotary teeth rotate, the rotary shafts move, the rotary shafts drive the ejector rods to move so as to eject a product, and therefore the purpose of separating the upper die from the lower die and then demoulding the product is achieved.

Optionally, a longitudinal deep groove ball bearing is arranged on the longitudinal transmission shaft, and a bearing with a seat is arranged on the transverse transmission shaft.

By adopting the technical scheme, the longitudinal deep groove ball bearing and the belt seat bearing increase the rotating stability of each gear in the steering gear set.

Optionally, the rotating shaft comprises a lift section and an ejector rod installation section which are arranged in a step shape, the lift section is a small end, an external thread end is arranged at the bottom end of the lift section, a corresponding internal thread hole is formed in the rotating shaft fixing plate, the ejector rod is connected with the ejector rod installation section, and the rotating teeth are fixed on the lift section.

By adopting the technical scheme, when the rotary teeth are driven by the specially-injected teeth to rotate, the lift section moves along the direction away from the lower die holder until the lift section is separated from the internal thread end of the rotating shaft fixing plate, and the product is completely ejected by the ejector rod at the moment.

Optionally, a counter bore is formed in the top end of the ejector rod mounting section, the ejector rod penetrates through the rotating shaft, the ejector rod is connected with the ejector rod mounting section through a fixing block, and the fixing block is located in the counter bore.

By adopting the technical scheme, the ejector rod is connected with the rotating shaft through the fixing block, so that the bearing capacity of the ejector rod is enhanced, and a product can be easily ejected.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the upper die and the lower die are separated, the product can be demoulded, so that the demoulding time is shortened, and the production efficiency is improved;

2. the longitudinal deep groove ball bearing is arranged on the longitudinal transmission shaft, and the bearing with the seat is arranged on the transverse transmission shaft, so that the rotating stability of each gear in the steering gear set is improved.

Drawings

FIG. 1 is a schematic structural view of an injection mold;

fig. 2 is a schematic structural view of the entire automatic demolding mechanism according to the embodiment of the present application;

fig. 3 is a schematic view of an automatic mold release mechanism applied to an injection mold.

Description of reference numerals: 1. a lower die holder; 2. a mandril fixing plate; 21. a top rod; 211. a fixed block; 3. a rotating shaft fixing plate; 31. a rotating shaft; 311. a lift section; 3111. an externally threaded end; 312. a mandril mounting section; 3121. a counter bore; 32. an internally threaded bore; 4. a lower base plate; 5. a lower template; 51. molding blocks; 6. an upper die holder; 61. a pouring gate; 62. a rack; 7. an upper base plate; 8. an upper template; 81. an upper cavity; 9. a gear transmission set; 91. a range adjusting gear set; 911. a driving tooth; 9111. an inflation jig; 912. a driven tooth; 913. a primary gear; 914. a secondary gear; 9141. a connecting tooth; 9142. adjusting a stroke tooth; 915. a gear mounting plate; 916. a lateral deep groove ball bearing; 92. a steering gear set; 921. a rotary tooth; 922. a longitudinal transmission set; 9221. specially injecting teeth; 9222. longitudinal bevel teeth; 9223. a longitudinal drive shaft; 9224. a longitudinal deep groove ball bearing; 923. a transverse transmission set; 9231. transverse bevel teeth; 9232. a transverse transmission shaft; 9233. a pedestal bearing.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses injection mold is with automatic demoulding mechanism. Referring to fig. 2, the automated stripping mechanism includes a stripper assembly, a rack 62, and a gear train 9 coupled to the stripper assembly and the rack 62. The stripper assembly includes a pivot shaft 31 and a ram 21 disposed through the pivot shaft 31.

Referring to fig. 2 and 3, the stripper assembly is disposed within the lower mold and the rack 62 is disposed at one end of the upper mold. The gear transmission set 9 includes a range gear set 91 and a steering gear set 92. The range adjusting gear set 91 is positioned at one end of the lower die and is in transmission connection with the rack 62, and the steering gear set 92 is positioned inside the lower die and is in transmission connection with the rotating shaft 31; the range regulating gear set 91 is in transmission connection with the steering gear set 92. The stroke-adjusting gear set 91 is used for adjusting the lift ratio between the rack 62 and the ejector rod 21 so as to ensure that the rod has enough lift to completely eject a product when the upper die is separated from the lower die; the steering gear set 92 is used to connect the range gear set 91 and the rotation shaft 31, and to steer the transverse rotation of the range gear set 91 into the longitudinal rotation of the rotation shaft 31.

When the demoulding is carried out, the rack 62 drives the gear transmission set 9 to enable the rotating shaft 31 to rotate, when the rotating shaft 31 rotates, the rotating shaft slides on the rotating shaft fixing plate 3 along the direction far away from the lower die holder 1 and drives the ejector rod 21 to move upwards, so that a product is ejected out, and when the upper die is separated from the lower die, the product can be demoulded, so that the demoulding time is shortened, and the production efficiency is improved.

Referring to fig. 2, the range gear set 91 includes driving teeth 911, a range gear assembly, and driven teeth 912. The driving gear 911 is meshed with the rack 62, the stroke-adjusting gear component is in transmission connection with the driving gear 911, and the driven gear 912 is in transmission connection with the stroke-adjusting gear component. The range gear assembly includes a primary gear 913 and a secondary gear 914. The primary gear 913 is meshed with the driving tooth 911, and the pitch circle diameter of the primary gear 913 is larger than that of the driving tooth 911; the secondary gear 914 meshes with both the primary gear 913 and the driven gear 912. The secondary gear 914 includes a connecting tooth 9141 and a range adjusting tooth 9142 that are coaxially provided, the connecting tooth 9141 meshes with the primary gear 913, and the range adjusting tooth 9142 meshes with the driven teeth 912. The pitch circle diameter of the adjusting teeth 9142 is larger than that of the connecting teeth 9141. The rack 62 drives the drive tooth 911 to rotate when moving, the drive tooth 911 drives the transmission of one-level gear 913, one-level gear 913 drives and connects tooth 9141 to rotate, the drive tooth 911, the linear velocity homogeneous phase of one-level gear 913 and connection tooth 9141 equals, transfer tooth 9142 to rotate together when connecting tooth 9141 to rotate, the angular velocity of connecting tooth 9141 and transfer tooth 9142 equals, the linear velocity increases, transfer tooth 9142 drives from the tooth 912 rotation, transfer tooth 9142 equals with the linear velocity of driven tooth 912, thereby reach the mesh of transferring.

Referring to fig. 2 and 3, the range gear set 91 is provided with a gear mounting plate 915, and the gear mounting plate 915 is provided with a transverse deep groove ball bearing 916 for mounting each gear of the range gear set 91. In this embodiment, the connecting teeth 9141 and the stroke adjusting teeth 9142 are coaxial, so that four gear rotating shafts are arranged. The two ends of the gear rotating shaft are provided with transverse deep groove ball bearings 916, and the transverse deep groove ball bearings 916 increase the rotating stability of each gear in the range adjusting gear set 91.

Referring to fig. 2, an inflatable jig 9111 is disposed at the top end of the gear mounting plate 915, and the inflatable jig 9111 is fixed on the gear mounting plate 915 through screws. The inflatable jig 9111 is used as an auxiliary tool for assisting in controlling the rotation of the gears, and is used for ensuring the accuracy of the positions of the gears when the gears are engaged, so as to ensure the smooth operation of the range adjusting gear set 91.

Referring to FIG. 2, the steering gear set 92 includes a rotary tooth 921 and a steering gear set. The rotary teeth 921 are provided on the rotary shaft 31 for driving the rotary shaft 31 to rotate; the steering transmission set is in transmission connection with both the rotary teeth 921 and the driven teeth 912 for providing rotary power to the rotary teeth 921. Turn to transmission group including vertical transmission group 922 and transverse transmission group 923, vertical transmission group 922 includes the tooth 9221 of annotating specially with the meshing of gyration tooth 921, establishes the vertical awl tooth 9222 of annotating specially below the tooth 9221 and connects the vertical transmission shaft 9223 of annotating specially tooth 9221 and vertical awl tooth 9222, transverse transmission group 923 includes the horizontal awl tooth 9231 with vertical awl tooth 9222 meshing and connects the horizontal transmission shaft 9232 of horizontal awl tooth 9231 and driven tooth 912.

When the driven gear 912 rotates, the horizontal transmission shaft 9232 rotates simultaneously and drives the horizontal bevel gear 9231 to rotate together, the horizontal bevel gear 9231 drives the longitudinal bevel gear 9222 to rotate, so that the rotation is realized, when the longitudinal bevel gear 9222 rotates, the vertical transmission shaft 9223 rotates simultaneously and drives the special injection gear 9221 to rotate, the special injection gear 9221 drives the rotary gear 921 to rotate, the rotary gear 921 rotates to enable the rotary shaft 31 to move, the rotary shaft 31 drives the ejector rod 21 to move to eject a product, and therefore the purpose that the product is demolded by separating the upper die from the lower die is achieved.

Referring to fig. 2 and 3, the longitudinal transmission shaft 9223 is provided with three longitudinal deep groove ball bearings 9224, in this embodiment, the longitudinal deep groove ball bearings 9224 are provided, two longitudinal deep groove ball bearings 9224 are respectively provided on two sides of the special notes tooth 9221, and the other longitudinal deep groove ball bearing 9224 is provided on one side of the longitudinal taper tooth 9222 close to the special notes tooth 9221. The horizontal transmission shaft 9232 is provided with a bearing 9233 with a seat, and the bearing 9233 with a seat is positioned between the horizontal bevel gear 9231 and the driven gear 912. The longitudinal deep groove ball bearing 9224 and the seated bearing 9233 increase the smoothness of rotation of the gears in the steering gear set 92.

Referring to fig. 2 and 3, the rotating shaft 31 includes a lift section 311 and a lift pin mounting section 312 in a stepped arrangement. The lift section 311 is a small end, an external thread end 3111 is arranged at the bottom end of the lift section 311, a corresponding internal thread hole 32 is arranged on the rotating shaft fixing plate 3, and the lift section 311 is in threaded connection with the rotating shaft fixing plate 3. The lift pin 21 is connected to the lift pin mounting section 312, and the rotary tooth 921 is fixed to the lift section 311. When the rotary teeth 921 are driven by the special injection teeth 9221 to rotate, the lift section 311 moves in the direction far away from the lower die base 1 until the lift section 311 is separated from the internal threaded hole 32 of the rotating shaft fixing plate 3, at this time, the ejector rod 21 completely ejects the product, and when the rotary teeth 921 continuously rotate, the rotating shaft 31 does not move in the direction far away from the lower die base 1.

Referring to fig. 3, a counter bore 3121 is provided at the top end of the push rod mounting section 312, the push rod 21 is inserted into the rotating shaft 31, the push rod 21 is connected to the push rod mounting section 312 through a fixing block 211, and the fixing block 211 is located in the counter bore 3121. The push rod 21 is connected with the rotating shaft 31 through the fixing block 211, so that the bearing capacity of the push rod 21 is enhanced, and a product can be easily pushed out.

The implementation principle of the automatic demolding mechanism for the injection mold is as follows: when the upper die is removed from the die, the upper die is lifted along the direction away from the lower die, when the upper die moves, the rack 62 drives the driving tooth 911 to rotate, the driving tooth 911 drives the primary gear 913 to transmit, the primary gear 913 drives the connecting teeth 9141 to rotate, when the connecting teeth 9141 rotate, the stroke adjusting teeth 9142 rotate together, and the stroke adjusting teeth 9142 drive the driven teeth 912 to rotate; when driven tooth 912 rotates, horizontal transmission shaft 9232 takes place to rotate simultaneously, and drive horizontal awl tooth 9231 and rotate together, horizontal awl tooth 9231 drives vertical awl tooth 9222 and rotates, realize turning to, when vertical awl tooth 9222 rotates, vertical transmission shaft 9223 takes place to rotate simultaneously, and drive specially annotate tooth 9221 and rotate, specially annotate tooth 9221 and drive gyration tooth 921 and rotate, the gyration axle 31 slides along the direction of keeping away from die holder 1 on the gyration axle fixed plate 3 when rotating, and drive ejector pin 21 rebound, thereby ejecting the product, when the separation of cope match-plate pattern and bed die is accomplished, the drawing of patterns can be accomplished to the product, it is consuming time to have shortened the drawing of patterns, and the production efficiency is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automatic demoulding mechanism for injection mold which characterized in that: including setting up demoulding assembly in the bed die, setting up rack (62) and the gear drive group (9) that link to each other with demoulding assembly and rack (62) at last mould one end, demoulding assembly includes revolving axle (31) and wears to establish ejector pin (21) in revolving axle (31), gear drive group (9) are including being located bed die one end and range adjusting gear train (91) and being connected with rack (62) transmission and being located inside and the steering gear train (92) of being connected with revolving axle (31) transmission of bed die, range adjusting gear train (91) and steering gear train (92) transmission are connected.

2. The automatic demolding mechanism for an injection mold according to claim 1, characterized in that: transfer range gear group (91) including with drive tooth (911) of rack (62) meshing, with the transfer range tooth subassembly that drive tooth (911) transmission is connected and with transfer range tooth driven tooth (912) that the transmission of range tooth subassembly is connected, transfer range tooth subassembly include one-level gear (913) with drive tooth (911) meshing and with one-level gear (913) and driven tooth (912) gear secondary gear (914) that all mesh, secondary gear (914) are including connecting tooth (9141) and transfer range tooth (9142) of coaxial setting, connect tooth (9141) and one-level gear (913) meshing, transfer range tooth (9142) and driven tooth (912) meshing, the reference circle diameter of transfer range tooth (9142) is greater than the reference circle diameter of connecting tooth (9141).

3. The automatic demolding mechanism for an injection mold according to claim 2, characterized in that: the range adjusting gear set (91) is provided with a gear mounting plate (915), and a transverse deep groove ball bearing (916) used for mounting each gear of the range adjusting gear set (91) is arranged on the gear mounting plate (915).

4. The automatic demolding mechanism for an injection mold according to claim 3, characterized in that: the top end of the gear mounting plate (915) is provided with an inflatable jig (9111).

5. The automatic demolding mechanism for an injection mold according to claim 2, characterized in that: turn to gear train (92) including establishing gyration tooth (921) on revolving axle (31) and the transmission group that turns to that is connected with gyration tooth (921) transmission, turn to the transmission group and be connected with driven tooth (912) transmission, turn to the transmission group including vertical transmission group (922) and horizontal transmission group (923), vertical transmission group (922) include with special notes tooth (9221) of gyration tooth (921) meshing, establish vertical awl tooth (9222) of special notes tooth (9221) below and connect the vertical transmission shaft (9223) of special notes tooth (9221) and vertical awl tooth (9222), horizontal transmission group (923) include with horizontal awl tooth (9231) of vertical awl tooth (9222) meshing and connect horizontal awl tooth (9231) and the horizontal transmission axle (9232) of driven tooth (912).

6. The automatic demolding mechanism for an injection mold according to claim 5, characterized in that: the longitudinal transmission shaft (9223) is provided with a longitudinal deep groove ball bearing (9224), and the transverse transmission shaft (9232) is provided with a bearing with a seat (9233).

7. The automatic demolding mechanism for an injection mold according to claim 5, characterized in that: the rotating shaft (31) comprises a lifting section (311) and an ejector rod mounting section (312), the lifting section (311) is arranged in a step shape, an external thread end (3111) is arranged at the bottom end of the lifting section (311), a corresponding internal thread hole (32) is formed in the rotating shaft fixing plate (3), the ejector rod (21) is connected with the ejector rod mounting section (312), and the rotating teeth (921) are fixed on the lifting section (311).

8. The automatic demolding mechanism for an injection mold according to claim 7, characterized in that: the top end of the ejector rod mounting section (312) is provided with a counter bore (3121), the ejector rod (21) penetrates through the rotating shaft (31), the ejector rod (21) is connected with the ejector rod mounting section (312) through a fixing block (211), and the fixing block (211) is located in the counter bore (3121).