CN112297371A

CN112297371A - Injection molding machine

Info

Publication number: CN112297371A
Application number: CN202011027422.XA
Authority: CN
Inventors: 王弯; 任启兰; 冯建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-02-02

Abstract

The invention relates to the field of injection molding machines, in particular to an injection molding machine, which comprises an installation seat, wherein a supporting mechanism is fixedly connected to the side wall of one side of the installation seat, a pressing mechanism is fixedly installed on the supporting mechanism, a conveying mechanism is arranged on the lower surface of the supporting mechanism, and a sealing mechanism is fixedly connected to the conveying mechanism, so that the injection molding machine has the beneficial effects that: when using, drive the threaded sleeve through driving motor and rotate, the threaded sleeve descends in the section of thick bamboo of moulding plastics through threaded rod drive recipient and carries out the operation of moulding plastics, the threaded rod rotates through drive mechanism drive lead screw simultaneously, the lead screw removes through the cooperation synchronous drive seal block with screw-nut when rotating, and then can control the closing plate and open, make the closing plate can open when the section of thick bamboo of moulding plastics need annotate the material, and the section of thick bamboo of moulding plastics closing plate can be closed when feeding, avoid the inside thermoplastic plastics of the section of thick bamboo of moulding plastics can produce and reveal.

Description

Injection molding machine

Technical Field

The invention relates to the field of injection molding machines, in particular to an injection molding machine.

Background

The injection molding machine is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by utilizing a plastic molding die, and the injection molding machine is a technological process for injecting the plasticized molten plastic of a vertical injection molding machine (namely, viscous state) into a closed die cavity by means of the thrust of a screw (or a plunger) and obtaining the products after solidification and shaping, and is widely applied to various fields of national defense, electromechanics, automobiles, transportation, building materials, packaging, agriculture, cultural and educational sanitation and daily life of people.

When the existing injection molding machine is used, thermoplastic plastics injected into the existing injection molding machine is easy to fall off at an injection port and fall down to a processing mold, and long-time thermoplastic plastics are accumulated and can be remained on the surface of the mold in a large quantity, so that the subsequent use of the mold is influenced, and the mold needs to be cleaned frequently, so that the use of equipment is complicated, and therefore, the injection molding machine is necessary to be provided.

Disclosure of Invention

The invention provides an injection molding machine aiming at the problems in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an injection molding machine, includes a mount pad, a supporting mechanism of fixedly connected with on the lateral wall of one side wherein of mount pad, fixed mounting has a mechanism of pushing down on the supporting mechanism, supporting mechanism's lower surface is provided with a conveying mechanism, last sealing mechanism of fixedly connected with of conveying mechanism, be provided with a drive mechanism jointly on conveying mechanism and the supporting mechanism, be provided with a stop gear on the mechanism of pushing down.

The supporting mechanism comprises a supporting plate, the supporting plate is fixedly connected to the side wall of one side of the mounting base, the lower surface of the supporting plate is provided with two vertical supporting rods fixedly connected with, two lower ends of the supporting rods are fixedly connected with a mounting plate, the mounting plate is fixedly provided with an injection molding barrel vertically arranged, the side wall of one side of the injection molding barrel is fixedly communicated with an inlet pipe, one end of the inlet pipe penetrates through the corresponding outer barrel wall of the injection molding barrel and extends outwards, and the lower end of the injection molding barrel is fixedly connected with an injection molding head.

Specifically, the pressing mechanism comprises a threaded sleeve, the threaded sleeve is rotatably connected to the supporting plate through a bearing, two ends of the threaded sleeve respectively penetrate through the upper surface and the lower surface of the supporting plate and extend outwards, a first bevel gear is fixedly sleeved on the outer side wall of the top end of the threaded sleeve outside the supporting plate, a driving motor is fixedly connected to the upper surface of the supporting plate on one side of the first bevel gear, the output end of the driving motor is fixedly connected with a second bevel gear through a coupler, the first bevel gear is meshed with the second bevel gear, a threaded rod is connected in the threaded sleeve in a threaded manner, two ends of the threaded rod respectively penetrate through corresponding openings of the threaded sleeve and extend outwards, a through hole is formed in the upper surface of the injection molding barrel corresponding to the position of the threaded rod, and the lower end of the threaded rod sequentially penetrates through a lower end opening and the through hole of the threaded sleeve and, one end of the threaded rod, which is positioned in the injection molding barrel, is fixedly connected with an extrusion block.

Specifically, conveying mechanism includes a spout, the lower surface at the mounting panel is seted up to the spout, it is connected with a lead screw to rotate through the bearing between the relative cell wall of spout, threaded connection has a screw-nut on the pole wall of lead screw, the fixed cover of having connect one and quart the slider on screw-nut's the lateral wall, the lower extreme of slider runs through the notch of spout and downwardly extending to outside the mounting panel.

Specifically, sealing mechanism includes a slide opening, the slide opening runs through and sets up on the outer tube wall of a section of thick bamboo wherein one side of moulding plastics, sliding connection has a closing plate in the slide opening, one of them end of closing plate runs through the corresponding drill way of slide opening and extends to in the section of thick bamboo of moulding plastics, the other end of closing plate runs through the corresponding drill way of slide opening and extends to outside the section of thick bamboo of moulding plastics, the one end fixedly connected with a first sealed piece of closing plate position in the section of thick bamboo of moulding plastics, the closing plate is located to mould plastics and fixedly cup joints a second sealed piece on the outer one end lateral wall of section of thick bamboo, the closing plate offsets with the corresponding inner tube wall of a section of thick bamboo of moulding plastics respectively with first sealed piece, the second sealed piece offsets with the outer tube wall of the section of thick bamboo of moulding plastics that corresponds the slide opening.

Specifically, the transmission mechanism comprises a transmission rod, the transmission rod is rotatably connected between the supporting plate and the mounting plate through a bearing, a driven gear is fixedly sleeved on the rod wall of the transmission rod, a driving gear is fixedly sleeved on the outer cylinder wall of the lower end of the threaded sleeve corresponding to the position of the driven gear, the driving gear is meshed with the driven gear, the lower end of the transmission rod penetrates through the mounting plate and extends into the sliding groove, a third bevel gear is fixedly connected to one end, located in the sliding groove, of the transmission rod, a fourth bevel gear is fixedly sleeved on the screw rod wall corresponding to the position of the third bevel gear, and the third bevel gear is meshed with the fourth bevel gear.

Specifically, stop gear includes a spacing hole, spacing hole is vertical form and runs through and set up in the backup pad, sliding connection has a gag lever post in the spacing hole, the both ends of gag lever post run through corresponding drill way and the outside extension in spacing hole respectively, the gag lever post is located a connecting block of fixedly connected with on the top pole wall outside the spacing hole, the one end fixed connection that the gag lever post was kept away from to the connecting block is on the top pole wall of threaded rod.

Specifically, the screw rod is provided with a thread-free area on the rod walls at two ends in the sliding groove, and the thread-free areas are matched with the length of the screw rod nut.

The invention has the beneficial effects that:

(1) the invention relates to an injection molding machine, which is provided with a supporting plate, a supporting rod, a mounting plate, an injection molding barrel, an injection molding head, a feeding pipe, a threaded sleeve, a first bevel gear, a driving motor, a second bevel gear, a threaded rod, a through hole, an extrusion block, a sliding chute, a lead screw nut, a sliding block, a sliding hole, a sealing plate, a first sealing block, a second sealing block, a driving rod, a driven gear, a driving gear, a third bevel gear and a fourth bevel gear, wherein when the injection molding machine is used, the threaded sleeve is driven to rotate by the driving motor, the extrusion block is driven to descend in the injection molding barrel by the threaded rod to perform injection molding operation, the threaded rod drives the lead screw to rotate by a transmission mechanism, the sealing block is synchronously driven to move by matching with the lead screw nut when the lead screw rotates, and then the sealing plate can be, and the sealing plate of the injection molding cylinder can be closed when charging, so that the leakage of the thermoplastic plastics in the injection molding cylinder is avoided.

(2) According to the injection molding machine, the threaded sleeve, the threaded rod, the limiting hole, the limiting rod and the connecting block are arranged, the limiting rod is connected in the limiting hole in a sliding mode and can only vertically lift in the limiting hole, meanwhile, the limiting rod limits the threaded rod through the connecting block, the threaded rod cannot rotate, and therefore the threaded rod can only vertically lift when the threaded sleeve rotates.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a charge configuration of an injection molding machine according to the present invention;

FIG. 2 is a schematic view of an injection state structure of an injection molding machine according to the present invention;

FIG. 3 is a schematic top view of a support plate of an injection molding machine according to the present invention;

FIG. 4 is a schematic bottom view of a support plate of an injection molding machine according to the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 1 of an injection molding machine according to the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 1 of an injection molding machine according to the present invention;

FIG. 7 is an enlarged schematic view of portion C of FIG. 2 of an injection molding machine according to the present invention;

fig. 8 is an enlarged schematic structural view of a portion D in fig. 2 of an injection molding machine according to the present invention.

In the figure: 1. a mounting seat; 2. a support mechanism; 21. a support plate; 22. a support bar; 23. mounting a plate; 24. an injection molding barrel; 25. an injection head; 26. a feed pipe; 3. a pressing mechanism; 31. a threaded sleeve; 32. a first bevel gear; 33. a drive motor; 34. a second bevel gear; 35. a threaded rod; 36. a through hole; 37. extruding the block; 4. a conveying mechanism; 41. a chute; 42. a screw rod; 43. a feed screw nut; 44. a slider; 5. a sealing mechanism; 51. a slide hole; 52. a sealing plate; 53. a first seal block; 54. a second seal block; 6. a transmission mechanism; 61. a transmission rod; 62. a driven gear; 63. a driving gear; 64. a third bevel gear; 65. a fourth bevel gear; 7. a limiting mechanism; 71. a limiting hole; 72. a limiting rod; 73. and (4) connecting the blocks.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-8, the injection molding machine according to the present invention includes a mounting base 1, a supporting mechanism 2 is fixedly connected to a side wall of one side of the mounting base 1, a pressing mechanism 3 is fixedly mounted on the supporting mechanism 2, a conveying mechanism 4 is disposed on a lower surface of the supporting mechanism 2, a sealing mechanism 5 is fixedly connected to the conveying mechanism 4, a transmission mechanism 6 is disposed on the conveying mechanism 4 and the supporting mechanism 2, a limiting mechanism 7 is disposed on the pressing mechanism 2, the pressing mechanism 3 presses the supporting mechanism 2 downward, so that the supporting mechanism 2 performs a material injection operation, the pressing mechanism 3 drives the conveying mechanism 4 to operate through the transmission mechanism 6, and the conveying mechanism 4 drives the sealing mechanism 5 to perform a sealing operation on the supporting mechanism 2, so as to avoid a large amount of leakage.

Specifically, the supporting mechanism 2 includes a supporting plate 21, the supporting plate 21 is fixedly connected to the side wall of one side of the mounting base 1, the lower surface of the supporting plate 21 is vertically and fixedly connected with two supporting rods 22, the lower ends of the two supporting rods 22 are jointly and fixedly connected with a mounting plate 23, a vertically arranged injection molding barrel 24 is fixedly mounted on the mounting plate 23, the side wall of one side of the injection molding barrel 24 is fixedly communicated with a feeding pipe 26, one end of the feeding pipe 26 penetrates through the corresponding outer barrel wall of the injection molding barrel 24 and extends outwards, the lower end of the injection molding barrel 24 is fixedly connected with an injection molding head 25, the pressing mechanism 3 includes a threaded sleeve 31, the threaded sleeve 31 is rotatably connected to the supporting plate 21 through a bearing, the two ends of the threaded sleeve 31 respectively penetrate through the upper surface and the lower surface of the supporting plate 21 and extend outwards, the outer side wall of the top end of the threaded sleeve 31, which, the upper surface of the supporting plate 21 positioned on one side of the first bevel gear 32 is fixedly connected with a driving motor 33, the output end of the driving motor 33 is fixedly connected with a second bevel gear 34 through a coupler, the first bevel gear 32 is meshed with the second bevel gear 34, the threaded sleeve 31 is internally threaded with a threaded rod 35, two ends of the threaded rod 35 respectively penetrate through corresponding openings of the threaded sleeve 31 and extend outwards, the upper surface of the injection cylinder 24 corresponding to the position of the threaded rod 35 is penetrated and provided with a through hole 36, the lower end of the threaded rod 35 sequentially penetrates through the lower opening of the threaded sleeve 31 and the through hole 36 and extends into the injection cylinder 24, one end of the threaded rod 35 positioned in the injection cylinder 24 is fixedly connected with an extrusion block 37, the limiting mechanism 7 comprises a limiting hole 71, the limiting hole 71 is vertically penetrated and arranged on the supporting plate 21, and a limiting rod 72 is, the two ends of the limiting rod 72 respectively penetrate through the corresponding orifices of the limiting hole 71 and extend outwards, the top rod wall of the limiting rod 72 outside the limiting hole 71 is fixedly connected with a connecting block 73, one end of the connecting block 73 far away from the limiting rod 72 is fixedly connected to the top rod wall of the threaded rod 35, the driving motor 33 is started, the driving motor 33 can drive the threaded sleeve 31 to rotate through the meshing of the first bevel gear 32 and the second bevel gear 43, the limiting rod 72 is connected in the limiting hole 71 in a sliding manner, so that the limiting rod 72 can only vertically lift in the limiting hole 71, meanwhile, the limiting rod 72 limits the threaded rod 35 through the connecting block 73, so that the threaded rod 35 cannot rotate, further, the threaded rod 35 can only vertically lift when the threaded sleeve 31 rotates, and the threaded rod 35 drives the extrusion block 37 to synchronously lift in the injection molding barrel 24 while lifting, thereby controlling the injection and charging operations of the injection cylinder 24.

Specifically, the conveying mechanism 4 includes a sliding chute 41, the sliding chute 41 is disposed on the lower surface of the mounting plate 23, a lead screw 42 is rotatably connected between the opposite walls of the sliding chute 41 through a bearing, a lead screw nut 43 is connected to the rod wall of the lead screw 42 in a threaded manner, a slider 44 is fixedly sleeved on the outer side wall of the lead screw nut 43, the lower end of the slider 44 penetrates through the notch of the sliding chute 41 and extends downwards to the outside of the mounting plate 23, the sealing mechanism 5 includes a sliding hole 51, the sliding hole 51 penetrates through the outer cylinder wall disposed on one side of the injection cylinder 24, a sealing plate 52 is slidably connected in the sliding hole 51, one end of the sealing plate 52 penetrates through the corresponding orifice of the sliding hole 51 and extends into the injection cylinder 23, the other end of the sealing plate 52 penetrates through the corresponding orifice of the sliding hole 51 and extends to the outside of the injection cylinder 23, one end of the sealing plate 52, a second sealing block 54 is fixedly sleeved on the side wall of one end of the sealing plate 52 positioned outside the injection cylinder 23, the sealing plate 52 and the first sealing block 53 are respectively abutted against the corresponding inner cylinder wall of the injection cylinder 23, the second sealing block 54 is abutted against the outer cylinder wall of the injection cylinder 23 corresponding to the position of the slide hole 51, one end of the sealing plate 52 positioned outside the injection cylinder 23 is connected with one end of the slide block 44 positioned outside the slide groove 41, the transmission mechanism 6 comprises a transmission rod 61, the transmission rod 61 is rotatably connected between the support plate 21 and the mounting plate 23 through a bearing, a driven gear 62 is fixedly sleeved on the rod wall of the transmission rod 61, a driving gear 63 is fixedly sleeved on the outer cylinder wall of the lower end of the threaded sleeve 31 corresponding to the position of the driven gear 62, the driving gear 63 is meshed with the driven gear 62, the lower end of the transmission rod 61 penetrates through the mounting plate 23 and extends into the slide groove 41, and one end of, a fourth bevel gear 65 is fixedly sleeved on the rod wall of the screw rod 42 corresponding to the position of the third bevel gear 64, the third bevel gear 64 is meshed with the fourth bevel gear 65, two end rod walls of the screw rod 42 in the sliding groove 41 are respectively provided with a thread-free area, the two thread-free areas are matched with the length of the screw rod nut 43, the threaded sleeve 31 can drive the transmission rod 61 to rotate by meshing the driving gear 63 and the driven gear 62 while rotating, the transmission rod 61 can drive the screw rod 42 to rotate by meshing the third bevel gear 64 and the fourth bevel gear 65, the slide block 44 can be driven to move by matching with the screw rod nut 43 when the screw rod 42 rotates, the slide block 44 synchronously drives the sealing plate 52 to move, and further the sealing plate 52 can be controlled to seal the opening of the injection molding barrel 24, so that the sealing plate 52 can be opened when the injection molding barrel 24 is injected, and the closing plate 52 of the injection molding barrel 24 is closed when charging, and simultaneously, because of the non-threaded areas arranged on the rod walls at the two ends of the screw rod 42, when the lifting amplitude of the closing plate 52 at the extrusion block 37 is large, the screw rod nut 43 can not rotate because of the non-threaded areas, and further the damage of the threads on the screw rod 42 can be avoided.

When the injection molding machine is used, firstly, the driving motor 33 is started, the driving motor 33 can drive the threaded sleeve 31 to rotate through the meshing of the first bevel gear 32 and the second bevel gear 43, the limiting rod 72 is connected in the limiting hole 71 in a sliding manner, so that the limiting rod 72 can only vertically lift in the limiting hole 71, meanwhile, the limiting rod 72 limits the threaded rod 35 through the connecting block 73, so that the threaded rod 35 cannot rotate, further, the threaded rod 35 can only vertically lift when the threaded sleeve 31 rotates, the threaded rod 35 drives the extrusion block 37 to synchronously lift in the injection molding barrel 24 while lifting, further, the injection and charging operations of the injection molding barrel 24 can be controlled, the threaded sleeve 31 can drive the transmission rod 61 to rotate through the meshing of the driving gear 63 and the driven gear 62 while rotating, the transmission rod 61 can drive the screw rod 42 to rotate through the meshing of the third bevel gear 64 and the fourth bevel gear 65, the screw rod 42 can drive the sliding block 44 to move through the matching with the screw rod nut 43 when rotating, the sliding block 44 synchronously drives the sealing plate 52 to move, and further the sealing of the opening of the injection cylinder 24 by the sealing plate 52 can be controlled, so that the sealing plate 52 can be opened when the injection cylinder 24 is injected, the sealing plate 52 can be closed when the injection cylinder 24 is charged, meanwhile, a thread-free area is arranged on the rod walls at two ends of the screw rod 42, so that the screw rod nut 43 cannot rotate due to the thread-free area when the lifting amplitude of the sealing plate 52 at the extrusion block 37 is large, further the damage to the thread on the screw rod 42 is avoided, and meanwhile, when the sealing plate 52 moves to the limit, the sliding hole 51 can be sealed through the first sealing block 53 and the second sealing block 54.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an injection moulding machine, includes a mount pad (1), its characterized in that, mounting pad (1) is supporting mechanism (2) of fixedly connected with on the lateral wall of one side wherein, fixed mounting has one to push down mechanism (3) on supporting mechanism (2), the lower surface of supporting mechanism (2) is provided with one conveying mechanism (4), sealing mechanism (5) of fixedly connected with are gone up in conveying mechanism (4), be provided with one drive mechanism (6) jointly on conveying mechanism (4) and supporting mechanism (2), be provided with one stop gear (7) on pushing down mechanism (2).

2. An injection molding machine according to claim 1, characterized in that: supporting mechanism (2) include a backup pad (21), backup pad (21) fixed connection is on mount pad (1) wherein lateral wall of one side, the lower surface of backup pad (21) is two spinal branch vaulting poles (22) of vertical form fixedly connected with, two the common fixedly connected with mounting panel (23) of lower extreme of bracing piece (22), fixed mounting has one to be vertical form and sets up a section of thick bamboo (24) of moulding plastics on mounting panel (23), it has an inlet pipe (26) to mould plastics fixed intercommunication on the lateral wall of a section of thick bamboo (24) wherein one side, the corresponding urceolus wall and the outside extension of a section of thick bamboo (24) of moulding plastics is run through to one of them one end of inlet pipe (26), the head (25) of moulding plastics of the lower extreme fixedly connected with of a.

3. An injection molding machine according to claim 1, characterized in that: the pressing mechanism (3) comprises a threaded sleeve (31), the threaded sleeve (31) is rotatably connected to the supporting plate (21) through a bearing, two ends of the threaded sleeve (31) penetrate through the upper surface and the lower surface of the supporting plate (21) respectively and extend outwards, a first bevel gear (32) is fixedly sleeved on the outer side wall of the top end of the threaded sleeve (31) outside the supporting plate (21), a driving motor (33) is fixedly connected to the upper surface of the supporting plate (21) on one side of the first bevel gear (32), the output end of the driving motor (33) is fixedly connected with a second bevel gear (34) through a coupler, the first bevel gear (32) is meshed with the second bevel gear (34), a threaded rod (35) is connected to the threaded sleeve (31) in a threaded manner, two ends of the threaded rod (35) penetrate through corresponding openings of the threaded sleeve (31) respectively and extend outwards, correspond a through-hole (36) has been seted up in penetrating of a section of thick bamboo (24) upper surface of moulding plastics of threaded rod (35) position, the lower extreme of threaded rod (35) runs through the lower extreme opening and through-hole (36) of threaded sleeve (31) in proper order and extends to a section of thick bamboo (24) of moulding plastics in, threaded rod (35) are located a one end fixedly connected with extrusion piece (37) in a section of thick bamboo (24) of moulding plastics.

4. An injection molding machine according to claim 1, characterized in that: the conveying mechanism (4) comprises a sliding groove (41), the sliding groove (41) is arranged on the lower surface of the mounting plate (23), a screw rod (42) is rotatably connected between the opposite groove walls of the sliding groove (41) through a bearing, a screw nut (43) is in threaded connection with the rod wall of the screw rod (42), a quart sliding block (44) is fixedly sleeved on the outer side wall of the screw nut (43), and the lower end of the sliding block (44) penetrates through a groove opening of the sliding groove (41) and extends downwards to the outside of the mounting plate (23).

5. An injection molding machine according to claim 1, characterized in that: the sealing mechanism (5) comprises a sliding hole (51), the sliding hole (51) penetrates through the outer cylinder wall on one side of the injection molding cylinder (24), a sealing plate (52) is connected in the sliding hole (51) in a sliding mode, one end of the sealing plate (52) penetrates through a corresponding orifice of the sliding hole (51) and extends into the injection molding cylinder (23), the other end of the sealing plate (52) penetrates through a corresponding orifice of the sliding hole (51) and extends out of the injection molding cylinder (23), one end, located in the injection molding cylinder (23), of the sealing plate (52) is fixedly connected with a first sealing block (53), a second sealing block (54) is fixedly sleeved on the side wall of one end, located outside the injection molding cylinder (23), of the sealing plate (52) and the first sealing block (53) respectively abut against the corresponding inner cylinder wall of the injection molding cylinder (23), and the second sealing block (54) abuts against the outer cylinder wall of the injection molding cylinder (23) corresponding to the sliding hole (51), the end of the sealing plate (52) positioned outside the injection cylinder (23) is connected with the end of the sliding block (44) positioned outside the sliding groove (41).

6. An injection molding machine according to claim 1, characterized in that: the transmission mechanism (6) comprises a transmission rod (61), the transmission rod (61) is rotatably connected between the support plate (21) and the mounting plate (23) through a bearing, a driven gear (62) is fixedly sleeved on the rod wall of the transmission rod (61), a driving gear (63) is fixedly sleeved on the outer cylinder wall at the lower end of the threaded sleeve (31) corresponding to the position of the driven gear (62), the driving gear (63) is meshed with the driven gear (62), the lower end of the transmission rod (61) penetrates through the mounting plate (23) and extends into the sliding groove (41), one end of the transmission rod (61) positioned in the sliding groove (41) is fixedly connected with a third bevel gear (64), a fourth bevel gear (65) is fixedly sleeved on the rod wall of the screw rod (42) corresponding to the position of the third bevel gear (64), and the third bevel gear (64) is meshed with the fourth bevel gear (65).

7. An injection molding machine according to claim 1, characterized in that: stop gear (7) include a spacing hole (71), spacing hole (71) are vertical form and run through and set up on backup pad (21), sliding connection has a gag lever post (72) in spacing hole (71), the both ends of gag lever post (72) run through the corresponding drill way and the outside extension of spacing hole (71) respectively, gag lever post (72) are located on the outer top pole wall of spacing hole (71) fixedly connected with a connecting block (73), the one end fixed connection that gag lever post (72) were kept away from in connecting block (73) is on the top pole wall of threaded rod (35).

8. An injection molding machine according to claim 4, characterized in that: the screw rod (42) is positioned on the rod walls at two ends in the sliding groove (41) and is provided with a thread-free area, and the thread-free areas are matched with the length of the screw rod nut (43).