CN114211690B

CN114211690B - Injection molding machine for terminal molding

Info

Publication number: CN114211690B
Application number: CN202111408743.9A
Authority: CN
Inventors: 周如勇; 宋进军; 梅雯雯
Original assignee: Yueqing Famfull Electronic Co ltd
Current assignee: Yueqing Famfull Electronic Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2024-03-29
Anticipated expiration: 2041-11-24
Also published as: CN114211690A

Abstract

The utility model relates to a technical field of terminal production facility discloses an injection molding machine for terminal shaping, and it includes the injection molding machine body, be equipped with the discharge gate that is used for the ejection of compact on the injection molding machine body, be provided with the receipts work or material rest that is located the discharge gate below on the injection molding machine body, receive the work or material rest including the bottom plate, be located the locating plate of bottom plate top and be fixed in the riser between bottom plate and the locating plate, offer the hole of stepping down that is located the discharge gate directly under on the locating plate, slide along vertical direction in the hole of stepping down and be provided with the backup pad that is used for placing the containing box, be connected with the elastic component that can produce deformation along vertical direction on the bottom plate; the locating plate is inclined and is fixedly connected with a baffle on the upper side, and when the elastic piece is in a natural state, the top surface of the supporting plate is flush with the top surface of the locating plate, and the baffle is abutted to the lower part of the storage box placed on the supporting plate. The application has the effect that intensity of labour is little when changing the containing box.

Description

Injection molding machine for terminal molding

Technical Field

The application relates to the technical field of terminal production equipment, in particular to an injection molding machine for terminal molding.

Background

The wiring terminal is an accessory product for realizing electric connection, and is widely applied to the field of automatic control and electronic engineering. With the increasing demands of industrial automation and control, the amount and variety of the connecting terminals are also increasing.

At present, the wiring terminal on the market mainly comprises a conducting strip for communicating a circuit and a plastic shell for inserting the conducting strip, wherein the plastic shell is generally formed by an injection molding machine in an injection molding processing mode, and the formed plastic shell is discharged from a discharge hole of the injection molding machine.

For collecting the molded plastic shell, a storage box is often placed under a discharge hole of the injection molding machine, so that the plastic shell discharged from the discharge hole falls into the storage box. However, when the existing injection molding machine works, after the plastic shell of one of the storage boxes is full, workers are required to manually move the full storage box, and then the other empty storage box is placed below the discharge port of the injection molding machine, so that the labor intensity is high and the improvement is required.

Disclosure of Invention

In order to reduce the labor intensity when changing the containing box, the application provides an injection molding machine for terminal molding.

The application provides an injection molding machine for terminal shaping adopts following technical scheme:

the utility model provides an injection molding machine for terminal shaping, includes the injection molding machine body, be equipped with the discharge gate that is used for the ejection of compact on the injection molding machine body, be provided with the receipts work or material rest that is located the discharge gate below on the injection molding machine body, receive the work or material rest and include the bottom plate, be located the locating plate of bottom plate top and be fixed in the riser between bottom plate and the locating plate, offer the hole of stepping down that is located the discharge gate under on the locating plate, slide along vertical direction in the hole of stepping down and be provided with the backup pad that is used for placing the containing box, be connected with the elastic component that can produce deformation along vertical direction on the bottom plate; the locating plate is inclined and is fixedly connected with a baffle on the upper side, and when the elastic piece is in a natural state, the top surface of the supporting plate is flush with the top surface of the locating plate, and the baffle is abutted to the lower part of the storage box placed on the supporting plate.

Through adopting above-mentioned technical scheme, the plastic envelope after injection molding machine body machine-shaping is discharged from the discharge gate, when collecting the plastic envelope, can place a plurality of containing boxes on the locating plate in step for the containing box is along the locating plate gliding under self action of gravity, until the containing box and the baffle butt of bottommost, above-mentioned containing box is located the discharge gate this moment under, can fall into the containing box after the discharge gate is discharged and be collected.

Along with the continuous increase of the quantity of plastic shells in the storage box, the sum of the weight of the storage box and the weight of the plastic shells can be continuously increased, and the pressure generated by the storage box on the supporting plate can be continuously increased, so that the supporting plate is driven to gradually compress the elastic piece and move downwards. After the containing box moves to be separated from the positioning plate, the containing box filled with the plastic shell can slide downwards along the supporting plate under the action of self gravity until the containing box is separated from the supporting plate due to the inclination of the top surface of the supporting plate. At this time, the elastic piece can drive the supporting plate to reset into the yielding hole so as to receive the next storage box which moves down gradually on the positioning plate, thereby completing the replacement of the storage box. The replacement process is realized by means of the gravity of the storage box and the plastic shell and the elastic action of the elastic piece, and workers are not required to manually move the storage box filled with the plastic shell during the replacement, so that the time and the labor are saved, and the labor intensity is low.

Optionally, the elastic piece comprises a first spring group, a second spring group and a third spring group which are arranged between the bottom plate and the supporting plate in an abutting manner, and the first spring group, the second spring group and the third spring group are distributed at equal intervals along the inclination direction of the positioning plate; and in a natural state, the lengths of the first spring group, the second spring group and the third spring group are sequentially increased.

Through adopting above-mentioned technical scheme, the length of first spring group, second spring group and third spring group is gradual change, helps the backup pad to keep inclined state to the collecting box shifts out the backup pad under the action of gravity.

Optionally, the first spring group, the second spring group and the third spring group all include many positioning springs, fixedly connected with and the same reference column of positioning spring quantity on the bottom plate, each reference column wears to establish respectively in different positioning springs.

Through adopting above-mentioned technical scheme, the base post wears to establish in the bottom of positioning spring, plays the effect that hinders positioning spring's bottom and take place bending deformation along the horizontal direction, helps backup pad and the hole of stepping down to align.

Optionally, the downside fixedly connected with of backup pad is equal with the uide bushing of foundation column quantity, the top slip setting of foundation column is in rather than adjacent uide bushing, and each uide bushing overlaps respectively and establishes in the outside of different positioning spring.

Through adopting above-mentioned technical scheme, the uide bushing cover is established on the top of positioning spring, plays the effect that hinders the top of positioning spring to take place to buckle deformation along the horizontal direction, has further ensured positioning spring's deformation direction for the backup pad is difficult for along with the containing box removal and influences the backup pad and the alignment of hole of stepping down.

Optionally, a pushing member for pushing the storage box out of the supporting plate is arranged on the positioning plate, and the pushing member comprises a pushing cylinder arranged on the positioning plate, a connecting rod fixed on a piston rod of the pushing cylinder and a push rod fixed on one side of the connecting rod facing the supporting plate; when the elastic piece is in the maximum compression state, the storage box on the supporting plate is aligned with the push rod.

Through adopting above-mentioned technical scheme, after the containing box in the backup pad moves to and the locating plate separation, can be with pushing the piston rod extension of cylinder to utilize the push rod to promote the containing box to the one side of keeping away from the backup pad, thereby accelerate the removal speed of containing box in the backup pad, improve and change efficiency.

Optionally, the connecting rod is provided with the bearing board that is located the push rod top towards one side of backup pad fixedly, the bearing board can move to the below of giving way the hole under the effect of pushing the cylinder.

Through adopting above-mentioned technical scheme, when pushing the piston rod of cylinder and elongating, the connecting rod can drive the bearing board and remove to the one side that is close to the backup pad for the bearing board moves to the below of hole of stepping down. At the moment, the supporting plate plays a role of supporting the empty storage box sliding downwards from the positioning plate, so that the empty storage box cannot fall above the storage box provided with the plastic shell along the yielding hole.

Optionally, a stop groove extending along the vertical direction is formed in the top surface of the connecting rod, a stop block is slidably arranged in the stop groove, and a stop spring is arranged between the stop block and the bottom wall of the stop groove; the locating plate is provided with a through hole higher than the abdication hole, the top end of the stop block can extend out of the through hole under the action of the stop spring, and one end, close to the abdication hole, of the top of the stop block is provided with a guide inclined plane.

Through adopting above-mentioned technical scheme, when the stop spring is in natural state, the top of stop block stretches out the through-hole, plays the effect that stops the empty containing box on the locating plate and moves to the hole of stepping down to avoid empty containing box to produce pressure to the containing box that is loading.

Optionally, a sliding groove communicated with the through hole is formed in the bottom surface of the positioning plate, the sliding groove is located between the abdication hole and the through hole, and the extending direction of the sliding groove is parallel to the extending direction of the piston rod of the pushing cylinder; when the piston rod of the pushing cylinder stretches, the top end of the stop block can horizontally slide along the sliding groove.

By adopting the technical scheme, when the piston rod of the pushing cylinder stretches, the guide inclined surface is contacted with the hole wall of the through hole first, so that the stop block compresses the stop spring and moves to one side close to the stop groove; when the guide inclined plane is separated from the hole wall of the through hole, the top end of the stop block can extend into the sliding groove and horizontally move along the sliding groove under the driving of the pushing cylinder. The sliding groove plays a role in guiding when the stop block moves, and is beneficial to improving the stability of the pushing piece during movement and the structural compactness of the device.

Optionally, a conveying frame is installed on the bottom plate, and a conveying belt and a power piece for driving the conveying belt to drive are arranged on the conveying frame; when the elastic piece is in the maximum compression state, the bottom end of the supporting plate is flush with the top end of the conveying belt.

Through adopting above-mentioned technical scheme, the containing box that is equipped with the plastic case can fall to the conveyer belt after removing from the backup pad to by the conveyer belt to the one side conveying of keeping away from the backup pad, in order to avoid containing the case and pile up in one side of backup pad and influence the receipts material.

Optionally, the upside of locating plate is fixed and is provided with two guide rails that are parallel to each other, the extending direction of guide rail is on a parallel with the incline direction of locating plate, two be formed with between guide rail and the locating plate and supply the containing box bottom to the direction passageway that the hole of stepping down slided.

Through adopting above-mentioned technical scheme, the guide rail plays the effect of direction when the hole slides to stepping down of empty containing box on the locating plate for the containing box is difficult for removing along the direction of perpendicular to locating plate slope, helps the containing box to move to between discharge gate and the backup pad, thereby ensures receiving machine's orderly work.

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

when the molded plastic shell is collected, a plurality of empty storage boxes can be synchronously arranged on the positioning plate, so that each storage box can be gradually moved to the upper part of the supporting plate along the positioning plate, and the automatic replacement of the storage boxes is realized by utilizing the gravity of the plastic shell and the storage boxes and the elasticity of the elastic piece, so that the labor and time are saved, and the labor intensity is low;

the base column and the guide sleeve play a role in preventing the positioning spring from bending deformation along the horizontal direction, so that the supporting plate is prevented from moving horizontally along with the storage box, and the supporting plate is helped to be aligned with the yielding hole;

when a piston rod of the pushing cylinder stretches, the push rod can push the storage box with the plastic shell to the side far away from the supporting plate, so that the replacement speed of the storage box is improved; at the moment, the bearing plate is positioned below the abdication hole, and plays a role in bearing the empty storage box sliding to the abdication hole.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present application.

Fig. 2 is a schematic partial cross-sectional view showing a shortened state of a piston rod of a pushing cylinder in the embodiment of the present application.

Fig. 3 is a schematic partial cross-sectional view showing an extended state of a piston rod of a pushing cylinder in the embodiment of the present application.

Fig. 4 is an enlarged schematic view at a in fig. 3.

Reference numerals illustrate:

1. an injection molding machine body; 11. a discharge port; 2. a material receiving frame; 21. a bottom plate; 211. a base column; 22. a positioning plate; 221. a guide rail; 222. a guide channel; 223. a relief hole; 224. a baffle; 225. a guide sleeve; 226. a through hole; 227. a sliding groove; 23. a riser; 231. a through hole; 3. an elastic member; 31. a first spring set; 32. a second spring set; 33. a third spring group; 34. a positioning spring; 4. a conveying frame; 41. a conveyor belt; 42. a power member; 421. a driving motor; 422. a drive roll; 423. driven roller; 5. a pusher shoe; 51. a pushing cylinder; 52. a connecting rod; 521. a stop groove; 522. a stopper; 523. a stop spring; 524. a guide slope; 53. a push rod; 54. a bearing plate; 6. a storage box; 7. and a support plate.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses an injection molding machine for terminal molding. Referring to fig. 1, the injection molding machine for molding the terminal includes an injection molding machine body 1, a discharge port 11 is provided on the injection molding machine body 1, and molded plastic cases can be discharged from the discharge port 11. Because the structure of the injection molding machine body 1 is the prior art, the description is omitted in this embodiment.

Referring to fig. 1 and 2, a receiving rack 2 is fixedly connected to an injection molding machine body 1, and the receiving rack 2 includes a bottom plate 21 horizontally arranged, a positioning plate 22 obliquely arranged, and two risers 23 fixed between the bottom plate 21 and the positioning plate 22, wherein the positioning plate 22 is located right above the bottom plate 21, and the two risers 23 are respectively located at two ends of the bottom plate 21. In this embodiment, the bottom plate 21 and the positioning plate 22 are fixedly connected to the injection molding machine body 1 by welding, and in other embodiments, the bottom plate 21 and the positioning plate 22 may be connected to the injection molding machine body 1 by bolting or the like, so that the two may be relatively fixed.

Referring to fig. 1, two guide rails 221 parallel to each other are integrally formed at the upper side of the positioning plate 22, the extending direction of the guide rails 221 is parallel to the tilting direction of the positioning plate 22, a guide channel 222 is formed between the positioning plate 22 and the two guide rails 221, and the width of the guide channel 222 is greater than the width of the storage box 6 for collecting plastic cases. When the storage box 6 is placed in the guide channel 222, it can slide downward along the positioning plate 22 under the action of its own weight.

Referring to fig. 2 and 3, the positioning plate 22 is provided with a yielding hole 223 located right below the discharge hole 11, the yielding hole 223 is located at the bottom end of the guide channel 222, and the size of the yielding hole 223 is slightly larger than that of the storage box 6, so that the storage box 6 can fall into the yielding hole 223 after moving to the bottom end of the guide channel 222. In order to prevent the storage box 6 from moving out of the guide channel 222 under the inertia effect, a baffle 224 is integrally formed on the upper side of the positioning plate 22, and the baffle 224 is arranged at the lower ends of the two guide rails 221 in an abutting manner.

Referring to fig. 1 and 2, an elastic member 3 is provided on the upper side of the bottom plate 21, a support plate 7 is provided on the top of the elastic member 3, and the size of the support plate 7 is the same as the size of the relief hole 223. The area formed by the enclosing of the hole walls of the yielding holes 223 coincides with the projection of the support plate 7 in the vertical direction, so that the support plate 7 can vertically slide along the yielding holes 223.

Referring to fig. 1 and 2, the elastic member 3 includes a first spring group 31, a second spring group 32 and a third spring group 33 which are equidistantly distributed along the inclination direction of the positioning plate 22, the first spring group 31, the second spring group 32 and the third spring group 33 each include a plurality of positioning springs 34, the bottom end of each positioning spring 34 is abutted on the bottom plate 21, the top end is abutted on the supporting plate 7, the length of the positioning spring 34 in the first spring group 31 in the natural state is smaller than the length of the positioning spring 34 in the second spring group 32 in the natural state, the length of the positioning spring 34 in the second spring group 32 in the natural state is smaller than the length of the positioning spring 34 in the third spring group 33 in the natural state, the supporting plate 7 is obliquely arranged under the action of the elastic member 3, and the inclination angle of the supporting plate 7 is the same as the inclination angle of the positioning plate 22. When each positioning spring 34 in the elastic member 3 is in a natural state, the top surface of the support plate 7 is flush with the top surface of the positioning plate 22 so that the storage box 6 in the guide passage 222 slides down onto the support plate 7.

Referring to fig. 1 and 2, after the previous storage box 6 moves to the supporting plate 7, the injection molding machine body 1 is started, so that molded plastic shells fall from the discharge hole 11 to the storage box 6 to be collected, the sum of the weights of the storage box 6 and the plastic shells continuously increases along with the continuous increase of the quantity of the plastic shells in the material receiving process, and the supporting plate 7 compresses the elastic piece 3 and gradually moves downwards until the previous storage box 6 is separated from the positioning plate 22. At this time, the storage box 6 is not contacted by the side wall of the yielding hole 223, and slides downwards along the supporting plate 7 to move out of the supporting plate 7, so that the former storage box 6 is moved out.

Referring to fig. 1 and 2, in order to control the extension and retraction directions of the positioning springs 34 in the elastic member 3, a base column 211 equal to the total number of the positioning springs 34 is fixedly connected to the upper side of the bottom plate 21, and a guide sleeve 225 equal to the total number of the positioning springs 34 is fixedly connected to the lower side of the support plate 7, wherein the base column 211 is cylindrical, the guide sleeve 225 is hollow cylindrical, and the inner diameter of the guide sleeve 225 is larger than the diameter of Yu Jizhu. Each base column 211 is respectively penetrated at the bottom ends of different positioning springs 34, and each guide sleeve 225 is respectively sleeved at the top ends of different positioning springs 34, so as to prevent the positioning springs 34 from bending deformation along the horizontal direction, thereby enabling the support plate 7 to move vertically only and facilitating the alignment of the support plate 7 with the yielding holes 223.

Referring to fig. 1 and 2, in order to prevent the storage box 6 from being stacked on the bottom plate 21 after moving out of the support plate 7, a transfer frame 4 is fixedly provided on the upper side of the bottom plate 21, a through hole 231 for moving out the storage box 6 from the material receiving frame 2 is provided on one of the risers 23, and the transfer frame 4 is located on a side of the lower end of the support plate 7 away from the upper end. The conveying frame 4 is provided with a conveying belt 41 and a power piece 42 for driving the conveying belt 41 to transmit, the power piece 42 comprises a driving motor 421 fixedly arranged on the conveying frame 4 and a driving roller 422 and a driven roller 423 rotatably arranged on the conveying frame 4, the driving roller 422 and the driven roller 423 are respectively sleeved at two ends of the conveying belt 41, and an output shaft of the driving motor 421 is fixedly connected with the driving roller 422. When the driving motor 421 is operated, the driving roller 422 rotates with the output shaft of the driving motor 421 to move the upper half of the conveyor belt 41 to a side away from the support plate 7. When the elastic member 3 is in the maximum compression state, the lower end of the support plate 7 is flush with the top end of the conveyor belt 41, facilitating the movement of the storage box 6 onto the conveyor belt 41.

Referring to fig. 2 and 3, the bottom of the positioning plate 22 is provided with a pusher shoe 5 for pushing the storage box 6 out of the support plate 7, and the pusher shoe 5 includes a pusher cylinder 51 mounted on the bottom surface of the positioning plate 22, a connecting rod 52 fixed to a piston rod of the pusher cylinder 51, and a push rod 53 fixed to a side of the connecting rod 52 facing the support plate 7, the push rod 53 being located on a side of the support plate 7 away from the conveyor belt 41. When the elastic member 3 is in the maximum compression state, the storage box 6 on the support plate 7 is aligned with the push rod 53, and at this time, if the piston rod of the pushing cylinder 51 is extended, the push rod 53 can push the storage box 6 to a side far away from the support plate 7, so as to help to increase the moving speed of the storage box 6.

Referring to fig. 3 and 4, a vertically extending stop groove 521 is formed in the top surface of the link 52, a stop block 522 is slidably disposed in the stop groove 521, and a stop spring 523 is fixedly disposed between the stop block 522 and the bottom wall of the stop groove 521, and the expansion and contraction direction of the stop spring 523 is a vertical direction. When the stop spring 523 is in a natural state, the top of the stop block 522 protrudes out of the stop groove 521. The top of the stop block 522 is provided with a guide inclined plane 524 at one end thereof close to the relief hole 223, and the guide inclined plane 524 is positioned at the junction of the top surface of the stop block 522 and the side surface of the stop block 522 close to the relief hole 223.

Referring to fig. 3 and 4, the upper end surface of the positioning plate 22 is provided with a through hole 226, the height of the through hole 226 is larger than the height of the relief hole 223, and the size of the through hole 226 is slightly larger than the size of the stop block 522. When the piston rod of the pushing cylinder 51 is contracted, the tip of the stopper 522 is extended out of the through hole 226 by the stopper spring 523, and the guide slope 524 abuts against the wall of the through hole 226. At this time, the stop block 522 protrudes from the positioning plate 22, and plays a role of blocking the following storage box 6 from sliding toward the yielding hole 223, so as to prevent the following storage box 6 from interfering with the aggregate of the preceding storage box 6.

Referring to fig. 3 and 4, a sliding groove 227 communicating with the through hole 226 is formed in the bottom surface of the positioning plate 22, the sliding groove 227 is located between the relief hole 223 and the through hole 226, and the width of the sliding groove 227 is slightly larger than the width of the connecting rod 52. When the piston rod of the pushing cylinder 51 is extended, the guiding inclined plane 524 is pressed by the wall of the through hole 226 to gradually move downwards, so that the stop block 522 compresses the stop spring 523, and the stop block 522 does not influence the horizontal movement of the connecting rod 52. The sliding groove 227 plays a guiding role when the connecting rod 52 moves, and helps to ensure the stability of the pusher shoe 5 during operation.

Referring to fig. 3 and 4, a support plate 54 is fixedly provided at a side of the link 52 facing the support plate 7, the support plate 54 is positioned at an upper side of the push rod 53, and the size of the support plate 54 is slightly larger than that of the relief hole 223. When the piston rod of the pushing cylinder 51 is extended, the supporting plate 54 is pushed to the lower side of the relief hole 223 to receive the next storage box 6.

The implementation principle of the injection molding machine for terminal molding in the embodiment of the application is as follows: when collecting the molded plastic shell, a plurality of empty containing boxes 6 can be arranged in the guide channel 222, so that the empty containing boxes 6 slide downwards along the positioning plate 22, and the plastic shell discharged from the discharge hole 11 can fall into the containing boxes 6 on the supporting plate 7. Along with the continuous discharge of the plastic shell, the total weight of the storage box 6 and the plastic shell on the supporting plate 7 is continuously increased, so that the elastic piece 3 is compressed and deformed, and the storage box 6 on the supporting plate 7 is gradually moved downwards. At this time, the piston rod of the pushing cylinder 51 is in a shortened state, and the top of the stop block 522 extends out of the positioning plate 22 to block the lower slide of the subsequent storage box 6.

When the storage box 6 on the supporting plate 7 is separated from the positioning plate 22, the piston rod of the pushing cylinder 51 is extended to push the previous storage box 6 from the supporting plate 7 to the conveyor belt 41, at this time, the stop block 522 is separated from the through hole 226, and the next storage box 6 is not blocked any more and slides into the yielding hole 223 to be received by the supporting plate 54. After the previous storage box 6 is completely separated from the supporting plate 7, the piston rod of the pushing cylinder 51 is shortened, the stop block 522 is reset to the through hole 226, the supporting plate 54 is reset to be separated from the storage box 6, and at this time, the supporting plate 7 is reset under the action of the elastic piece 3 so as to receive the next storage box 6. The receiving process does not need workers to manually move the storage box 6 filled with the plastic shell, and the storage box 6 is replaced with the receiving box with the advantages of time saving, labor saving and low labor intensity.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides an injection molding machine for terminal shaping, includes injection molding machine body (1), be equipped with on injection molding machine body (1) and be used for discharge gate (11), its characterized in that: the plastic injection machine comprises an injection machine body (1), and is characterized in that a receiving frame (2) positioned below a discharge hole (11) is arranged on the injection machine body (1), the receiving frame (2) comprises a bottom plate (21), a positioning plate (22) positioned above the bottom plate (21) and a vertical plate (23) fixed between the bottom plate (21) and the positioning plate (22), a yielding hole (223) positioned right below the discharge hole (11) is formed in the positioning plate (22), a supporting plate (7) for placing a containing box (6) is slidably arranged in the yielding hole (223) along the vertical direction, and an elastic piece (3) capable of deforming along the vertical direction is connected onto the bottom plate (21); the positioning plate (22) is obliquely arranged, the upper side of the positioning plate is fixedly connected with the baffle plate (224), when the elastic piece (3) is in a natural state, the top surface of the supporting plate (7) is flush with the top surface of the positioning plate (22), and the baffle plate (224) is abutted to the lower part of the storage box (6) placed on the supporting plate (7);

the positioning plate (22) is provided with a pushing piece (5) for pushing the storage box (6) out of the supporting plate (7), and the pushing piece (5) comprises a pushing cylinder (51) arranged on the positioning plate (22), a connecting rod (52) fixed on a piston rod of the pushing cylinder (51) and a push rod (53) fixed on one side of the connecting rod (52) facing the supporting plate (7); when the elastic piece (3) is in the maximum compression state, the storage box (6) on the supporting plate (7) is aligned with the push rod (53); one side of the connecting rod (52) facing the supporting plate (7) is fixedly provided with a bearing plate (54) positioned above the push rod (53), and the bearing plate (54) can move to the lower part of the yielding hole (223) under the action of the pushing cylinder (51).

2. The injection molding machine for molding terminals according to claim 1, wherein: the elastic piece (3) comprises a first spring group (31), a second spring group (32) and a third spring group (33) which are arranged between the bottom plate (21) and the supporting plate (7) in a butt joint way, and the first spring group (31), the second spring group (32) and the third spring group (33) are distributed at equal intervals along the inclination direction of the positioning plate (22); in a natural state, the lengths of the first spring group (31), the second spring group (32) and the third spring group (33) are sequentially increased.

3. The injection molding machine for terminal molding according to claim 2, wherein: the first spring group (31), the second spring group (32) and the third spring group (33) comprise a plurality of positioning springs (34), base columns (211) with the same number as the positioning springs (34) are fixedly connected to the bottom plate (21), and the base columns (211) are respectively arranged in different positioning springs (34) in a penetrating mode.

4. An injection molding machine for molding a terminal according to claim 3, wherein: the lower side of backup pad (7) fixedly connected with and guide sleeve (225) that foundation column (211) quantity equals, the top slip setting of foundation column (211) is in guide sleeve (225) rather than adjacent, and each guide sleeve (225) overlaps respectively and establishes in different positioning spring (34) outsides.

5. The injection molding machine for molding terminals according to claim 1, wherein: a stop groove (521) extending along the vertical direction is formed in the top surface of the connecting rod (52), a stop block (522) is slidably arranged in the stop groove (521), and a stop spring (523) is arranged between the stop block (522) and the bottom wall of the stop groove (521); the locating plate (22) is provided with a through hole (226) higher than the yielding hole (223), the top end of the stop block (522) can extend out of the through hole (226) under the action of the stop spring (523), and the top of the stop block (522) is provided with a guide inclined plane (524) at one end of the stop block, which is close to the yielding hole (223).

6. The injection molding machine for molding terminals according to claim 5, wherein: a sliding groove (227) communicated with the through hole (226) is formed in the bottom surface of the positioning plate (22), the sliding groove (227) is positioned between the yielding hole (223) and the through hole (226), and the extending direction of the sliding groove (227) is parallel to the extending direction of a piston rod of the pushing cylinder (51); when the piston rod of the pushing cylinder (51) is extended, the top end of the stop block (522) can horizontally slide along the sliding groove (227).

7. The injection molding machine for molding terminals according to claim 1, wherein: the conveying frame (4) is arranged on the bottom plate (21), and a conveying belt (41) and a power piece (42) for driving the conveying belt (41) to drive are arranged on the conveying frame (4); when the elastic piece (3) is in the maximum compression state, the bottom end of the supporting plate (7) is flush with the top end of the conveyor belt (41).

8. The injection molding machine for molding terminals according to claim 1, wherein: two guide rails (221) which are parallel to each other are fixedly arranged on the upper side of the positioning plate (22), the extending direction of the guide rails (221) is parallel to the inclined direction of the positioning plate (22), and a guide channel (222) for sliding the bottom of the storage box (6) towards the yielding hole (223) is formed between the two guide rails (221) and the positioning plate (22).