Injection molding machine for terminal processing

Abstract

The present application relates to the field of injection molding machines, and in particular to an injection molding machine for terminal processing, which includes a base, an upper mold base is arranged on the base, a lower mold base is also slidably arranged on the base, an upper mold is installed on the upper mold base, a lower mold for covering the upper mold is installed on the lower mold base, an injection hole for injection molding is provided on the upper mold base and the upper mold, a slide groove is provided on the inner wall of the injection hole of the upper mold base, a slider for sealing the injection hole opening slides in the slide groove, a control groove for controlling the sliding of the slider is provided through the upper mold base, and the control groove is connected to the slide groove. The present application has the effect of reducing the probability that drooling from the injection hole affects the covering of the upper mold and the lower mold.

Description

Technical Field

[0001] The present application relates to the field of injection molding machines, and in particular to an injection molding machine for terminal processing. Background Art

[0002] When terminals are manufactured, injection molding machines are often used.

[0003] The injection molding machine includes a base, a lower mold base is slidably arranged on the base, an upper mold base is arranged on the base, an upper mold is installed on the upper mold base, a lower mold for covering the upper mold is installed on the lower mold base, an injection cavity for injection molding is formed when the upper mold and the lower mold are covered, and an injection hole for injecting materials into the injection cavity is opened on the upper mold.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: after the material molded in the injection cavity is taken out, the injection hole on the upper mold is prone to drooling, and the drooling material cools and hardens on the upper mold, making it difficult to close the upper mold and the lower mold again. Summary of the invention

[0005] In order to improve the problem that the injection holes on the upper mold are prone to drooling after the material molded in the injection cavity is taken out, the present application provides an injection molding machine for terminal processing.

[0006] The present application provides an injection molding machine for terminal processing, which adopts the following technical solution:

[0007] An injection molding machine for terminal processing includes a base, an upper mold base is arranged on the base, a lower mold base is also slidably arranged on the base, an upper mold is installed on the upper mold base, a lower mold for covering the upper mold is installed on the lower mold base, injection holes for injection molding are provided on the upper mold base and the upper mold, a slide groove is provided on the inner wall of the injection hole of the upper mold base, a slider for sealing the injection hole opening slides in the slide groove, a control through groove is provided on the upper mold base for controlling the sliding of the slider, and the control through groove is connected to the slide groove.

[0008] By adopting the above technical scheme, after the injection molding of the injection cavity formed between the upper mold and the lower mold is completed through the injection hole, the injection hole opening can be closed by the slider, thereby disconnecting the injection liquid flowing inside the injection hole from the injection liquid in the injection cavity, reducing the probability of the injection liquid in the injection hole exchanging with the injection liquid in the injection cavity, thereby reducing the probability of the injection liquid in the injection hole solidifying at a lower speed, and making it easier and faster for the injection liquid in the injection cavity to solidify and mold. At the same time, when the injection liquid in the injection hole of the upper mold connected to the injection liquid in the injection cavity solidifies, the lower mold base is opened to take out the material. At this time, the injection hole opening is closed and it is difficult to produce drooling, and the injection liquid in the injection hole between the closed part of the injection hole of the upper mold base and the injection cavity is solidified together with the injection liquid in the injection cavity and then taken out, thereby reducing the probability of drooling affecting the stability of the cover between the upper mold and the lower mold, and improving the sealing of the cover between the upper mold and the lower mold.

[0009] Optionally, the slide groove includes a main groove and a sub-groove for sliding of the slider, the sub-groove being connected between the inner wall of the main groove and the inner wall of the injection hole, an interference block sliding in the sub-groove, a first guide groove being provided on the end of the interference block, the inner wall of the first guide groove being inclined and used to cooperate with the end of the slider to control the sliding of the interference block, the interference block being used to close the opening surface of the injection hole, a second spring being provided between the interference block and the bottom wall of the sub-groove, the second spring being extended and retracted along the sliding direction of the interference block.

[0010] By adopting the above technical solution, when the sliding of the resistance block is controlled by the sliding slider, and the resistance block slides in the groove and the injection hole, when the resistance block slides into the injection hole, the channel in the injection hole for the injection liquid to flow is closed, and the second spring is used to provide an external force to the resistance block in the direction of sliding in the injection hole, so that the state of the resistance block is more stable.

[0011] Optionally, an elastic sealing layer is provided on the inner wall of the sub-slot, and the elastic sealing layer seals the opening of the sub-slot. The abutment block pushes the elastic sealing layer to deform to seal the opening of the injection hole.

[0012] By adopting the above technical scheme, the opening connecting the sub-groove and the injection hole is sealed by the elastic sealing layer, thereby reducing the probability of the injection liquid flowing into the sub-groove and solidifying, making it difficult for the resistance block to slide, and improving the sliding stability of the resistance block. At the same time, the resistance block pushes the elastic sealing layer to deform the elastic sealing layer to close the injection hole opening. The elastic sealing layer has the ability to deform, so that the elastic sealing layer can fill the gap outside the side wall of the resistance block in a sealed state, thereby enhancing the sealing effect.

[0013] Optionally, a control rod is telescopically provided on the base, a slot for inserting the end of the control rod is opened on the lower mold base, a fixing rod is rotatably provided on the lower mold base, a locking rod is provided on the end of the fixing rod, and the end of the locking rod is used to be inserted into the control groove and abut against the slider.

[0014] By adopting the above technical solution, the control rod is used to guide the sliding of the lower mold base, so that the lower mold base slides along the extension and retraction direction of the control rod, thereby improving the stability of the lower mold base when sliding, and the locking rod is used to apply pressure to the upper mold base, so that the contact between the lower mold base and the upper mold base is tighter through the reaction force, thereby improving the stability between the upper mold and the lower mold during injection molding.

[0015] Optionally, the end of the control rod slides in the slot, and a first spring is arranged between the end of the control rod and the bottom wall of the slot, and the first spring is extended and retracted along the sliding direction of the control rod. A top block is arranged on the control rod, and the top block is used to interfere with the side wall of the fixed rod to control the rotation of the fixed rod.

[0016] By adopting the above technical scheme, when the control rod is extended and slid, the control rod will compress the first spring, and the first spring will generate a restoring elastic force on the bottom wall of the slot, thereby pushing the lower die seat to slide, so that there is a gap between the control rod and the slot, and the control rod can still drive the lower die seat to slide. When the lower die seat is fixed in contact with the upper die seat, the first spring will find it difficult to push the lower die seat, and the control rod will continue to extend at this time, so that the first spring is continuously compressed, so that the lower die seat is more tightly in contact with the upper die seat, and at the same time, a relative displacement occurs between the control rod and the lower die seat, so that the push block slides and pushes on the fixed rod, causing the fixed rod to rotate, so that the control rod controls the fixed rod to rotate only when the lower die seat is fixed in contact with the upper die seat, thereby reducing the probability of the fixed rod affecting the sliding of the lower die seat.

[0017] Optionally, a clearance groove for the top block to be inserted and slide is provided on the side wall of the fixed rod, a limiting groove is provided on the inner wall of the clearance groove, the clearance groove and the limiting groove both extend along the telescopic direction of the control rod, and a limiting block for being inserted into the limiting groove and sliding is provided on the top block.

[0018] By adopting the above technical scheme, the top block is inserted into and slides in the give way groove, and the limit block is inserted into and slides in the limit groove, so that the top block is always in the give way groove, reducing the probability of the top block escaping from the give way groove due to the extension and retraction of the control rod, and improving the stability of the top block. At the same time, the rotation of the fixed rod is controlled by the limit block sliding in the limit groove, and the rotation of the fixed rod is controlled while limiting it, reducing the probability of the fixed rod rotating incorrectly due to the acceleration received by the lower mold base when sliding, and improving the stability of the rotation of the fixed rod.

[0019] Optionally, a second guide groove is provided on the slider, the second guide groove is connected to the control through groove, the inner wall of the second guide groove is inclined, and the inclined inner wall of the second guide groove is used to contact with the locking rod to control the sliding of the slider.

[0020] By adopting the above technical scheme, when the locking rod is inserted into the second guide groove through the control groove, the end of the locking rod will contact with the inclined inner wall of the second guide groove, so that the slider slides in the main groove under the guidance of the inclined inner wall of the second guide groove, and when the slider slides to the bottom, the locking rod will contact with the bottom wall of the second guide groove, causing a pressure on the slider to approach the lower mold base, thereby causing a clamping stabilizing force between the upper mold base and the lower mold base, thereby improving the stability between the lower mold base and the upper mold base; and the slider slides into the injection hole under the elastic force of the second spring to close the injection hole opening, and the sliding of the slider will contact with the inclined inner wall of the first guide groove, and under the guidance of the inclined inner wall of the first guide groove, the slider will withdraw from the injection hole, thereby opening the injection hole for injection molding.

[0021] Optionally, a resistance rod is rotatably provided on the fixed rod, the resistance rod is used to resist on the upper die seat, a torsion spring is provided on the rotation axis of the resistance rod, and the torsion spring rotates and retracts along the direction in which the resistance rod resists the side wall of the upper die seat.

[0022] By adopting the above technical solution, the resistance rod resists against the upper die base, causing a pressure on the upper die base in the direction of approaching the lower die base, and the reaction force of the resistance rod on the fixed rod will cause a pressure on the lower die base in the direction of approaching the upper die base, and when the fixed rod continues to rotate, the torsion spring will twist, and the torsion spring will generate a restoring force, so that the pressure of the resistance rod on the upper die base is greater, thereby making the resistance between the upper die base and the lower die base tighter.

[0023] Optionally, a third spring is provided between the slider and the inner wall of the main groove, and the third spring expands and contracts along the sliding direction of the slider.

[0024] By adopting the above technical solution, the third spring is used to automatically reset the slider, and the slider slides in the direction close to the injection hole under the elastic force of the third spring, so that the end of the slider is inserted into the first guide groove, and the resistance block slides into the injection hole under the guidance of the inclined inner wall of the first guide groove to close the injection hole opening, and when the locking rod is inserted into the second guide groove, the slider slides in the direction away from the injection hole under the guidance of the inclined inner wall of the second guide groove, so that the end of the slider withdraws from the first guide groove, and at this time, the resistance block will withdraw from the injection hole under the elastic force of the second spring, so that the injection hole is opened.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The exchange between the injection liquid in the injection hole and the injection liquid in the injection cavity is reduced, thereby reducing the probability of the injection liquid in the injection cavity solidifying at a lower speed, making the injection liquid in the injection cavity easier and faster to solidify and form, reducing the probability of drooling affecting the stability of the cover between the upper mold and the lower mold, and improving the sealing of the cover between the upper mold and the lower mold.

[0027] 2. The elastic sealing layer has the ability to deform, so that the elastic sealing layer can fill the gap outside the side wall of the resistance block in the sealed state, thereby enhancing the sealing effect, improving the stability between the upper mold and the lower mold during injection molding, reducing the probability of the fixed rod affecting the sliding of the lower mold base, reducing the probability of the fixed rod rotating incorrectly due to the acceleration received when the lower mold base slides, and improving the stability of the fixed rod rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an injection molding machine used for terminal processing in Example 1 of the present application.

[0029] Figure 2 It is a schematic diagram of the exploded structure of the highlight slider.

[0030] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0032] Figure 5 It is a schematic diagram of the exploded structure highlighting the top block.

[0033] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure at point C in the middle.

[0034] Figure 7 yes Figure 5 Schematic diagram of the enlarged structure at D in the middle.

[0035] Figure 8 is along Figure 2 Schematic diagram of the cross section along line EE.

[0036] Fig. 9 It is a schematic diagram of the exploded structure of a protruding slider of an injection molding machine used for terminal processing in Example 2 of the present application.

[0037] Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure at F in the middle.

[0038] Fig.11 is along Fig. 9 Schematic diagram of the cross section of the GG line.

[0039] Explanation of the accompanying drawings: 1. base; 11. upper mold base; 12. lower mold base; 13. upper mold; 14. lower mold; 2. injection hole; 21. slide groove; 22. slider; 23. control through groove; 3. main groove; 31. sub-groove; 32. interference block; 33. first guide groove; 34. elastic sealing layer; 35. second spring; 4. control rod; 41. slot; 42. fixing rod; 43. locking rod; 44. first spring; 5. top block; 51. clearance groove; 52. limit groove; 53. limit block; 6. second guide groove; 61. interference rod; 62. torsion spring; 7. first limit ring block; 71. second limit ring block; 72. trigger block; 73. third spring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-11 This application is described in further detail.

[0041] Embodiment 1 of the present application discloses an injection molding machine for terminal processing. Figure 1 The injection molding machine for terminal processing includes a base 1, an upper mold base 11 is fixedly connected to the base 1, a lower mold base 12 is also slidably arranged on the base 1, an upper mold 13 is installed on the upper mold base 11, a guide rod is fixedly connected to the base 1, the end of the guide rod is fixedly connected to the upper mold base 11, a lower mold 14 for covering the upper mold 13 is installed on the lower mold base 12, the guide rod passes through the lower mold base 12, the lower mold base 12 slides on the guide rod, and the upper mold 13 and the lower mold 14 are covered to form an injection cavity for injection molding.

[0042] Reference Figure 1 and Figure 2 and Figure 3 An injection hole 2 for injection molding is provided on the upper mold base 11 and the upper mold 13. The injection hole 2 on the upper mold 13 penetrates the side wall of the upper mold 13, so that the injection cavity is connected with the injection hole 2 on the upper mold base 11. An injection molding mechanism for injecting molding liquid into the injection molding cavity is installed on the upper mold base 11, and the injection hole 2 is used for the injection molding mechanism to inject molding liquid into the injection molding cavity.

[0043] Reference Figure 3 and Figure 4 A slide groove 21 is provided on the inner wall of the injection hole 2 of the upper mold base 11, and a slider 22 slides in the slide groove 21 for sealing the opening of the injection hole 2. A control through groove 23 for controlling the sliding of the slider 22 is provided through the upper mold base 11, and the control through groove 23 is connected to the slide groove 21.

[0044] Reference Figure 5 and Figure 6The base 1 is fixedly connected with a driving cylinder, and two control rods 4 are telescopically slidable on the base 1. The control rods 4 are fixedly connected with the telescopic rods of the driving cylinder, so that the telescopic rods of the driving cylinder control the telescopic extension of the control rods 4. Two slots 41 are provided on the side wall of the lower die base 12 facing away from the upper die base 11. The two slots 41 are symmetrically located at the two ends of the side wall of the lower die base 12. The slots 41 correspond to the control rods 4 one by one, and the slots 41 are used for inserting the ends of the control rods 4.

[0045] Reference Figure 6 , a first limiting ring block 7 is fixedly connected to the inner wall of the slot 41, the first limiting ring block 7 is circumferentially fixed on the inner wall of the slot 41, and the first limiting ring block 7 is located on the inner wall of the slot 41 near the opening surface of the slot 41. A second limiting ring block 71 is fixedly connected to the end of the control rod 4 located in the slot 41, the second limiting ring block 71 is circumferentially around the end of the control rod 4, and the second limiting ring block 71 slides between the first limiting ring block 7 and the bottom wall of the slot 41. The side wall of the first limiting ring block 7 is in contact with the outer side wall of the control rod 4, and the second limiting ring block 71 is in contact with the inner wall of the slot 41. The thickness, inner circle diameter and outer circle diameter of the first limiting ring block 7 and the second limiting ring block 71 are the same, and the diameter of the control rod 4 plus the thickness of the second limiting ring block 71 is equal to the cross-sectional diameter of the slot 41.

[0046] Reference Figure 1 and Figure 6 When the control rod 4 slides too far toward the outside of the slot 41, the sliding of the control rod 4 will drive the second limit ring block 71 to abut against the inner wall of the first limit ring block 7. A first spring 44 is fixedly connected between the end side wall of the control rod 4 located in the slot 41 and the bottom wall of the slot 41 facing its own opening surface. The first spring 44 is retracted along the sliding direction of the control rod 4. The first spring 44 is used to make the upper die seat 11 abut against the lower die seat 12 so that the upper die 13 and the lower die 14 are covered. The control rod 4 can also compress the first spring 44 to slide in the slot 41, providing a margin space for the sliding of the control rod 4.

[0047] Reference Figure 3 and Figure 4 and Figure 6 Two pairs of hinged ears are fixedly connected to the lower die base 12, and the two pairs of hinged ears are symmetrically distributed on both sides of the lower die base 12. A fixed rod 42 is hinged between the pair of hinged ears. The length direction of the fixed rod 42 extends along the length direction of the control rod 4, and the rotation axis of the fixed rod 42 is perpendicular to the length direction of the fixed rod 42. The hinge axis of the fixed rod 42 on the hinged ear is the rotation axis, and the rotation axis of the fixed rod 42 is located in the middle section of the fixed rod 42. A locking rod 43 is fixedly connected to the side wall of the end of the fixed rod 42, and the end of the locking rod 43 is used to be rotated and inserted into the control slot 23 and abut against the slider 22.

[0048] Reference Figure 5 and Figure 6 , a top block 5 is fixedly connected to the control rod 4, and the top block 5 corresponds to the fixed rod 42 one by one. A clearance groove 51 for inserting and sliding the top block 5 is provided on the side wall of the fixed rod 42 facing the top block 5, and the clearance groove 51 extends along the length direction of the fixed rod 42. Limiting grooves 52 are provided on the inner walls on both sides of the clearance groove 51 facing each other, and the limiting groove 52 extends along the length direction of the fixed rod 42, that is, the clearance groove 51 and the limiting groove 52 both extend along the telescopic direction of the control rod 4. Limiting blocks 53 for inserting and sliding into the limiting groove 52 are fixedly connected on the side walls on both sides of the top block 5 facing away from each other, and the inner wall of the limiting groove 52 is in contact with the side wall of the limiting block 53. The limiting groove 52 and the locking rod 43 are respectively located at the two ends of the rotation axis of the fixed rod 42, and the limiting groove 52 is located on the side of the rotation axis of the fixed rod 42 away from the upper die seat 11.

[0049] Reference Figure 6 The height of the top block 5 is greater than the shortest distance between the rotation axis of the corresponding fixed rod 42 and the inner wall of the corresponding slot 41 plus the thickness of the first limit ring block 7, that is, the limit block 53 slides in the limit slot 52 by sliding the top block 5, thereby controlling a point in the limit slot 52 to be at the height of the limit block 53, and the height of the limit block 53 is constant, and the angle of the fixed rod 42 is controlled by controlling the distance between the limit block 53 and the rotation axis of the fixed rod 42.

[0050] Reference Figure 4 and Figure 7 The fixed rod 42 is also rotatably connected with a resisting rod 61, which is located at a position of the fixed rod 42 close to the locking rod 43. The resisting rod 61 is used to resist the side wall of the upper die base 11 facing away from the lower die base 12 as the fixed rod 42 rotates. A torsion spring 62 is sleeved on the rotating shaft of the resisting rod 61, one end of the torsion spring 62 is fixedly connected to the resisting rod 61, and the other end of the torsion spring 62 is fixedly connected to the fixed rod 42. When the torsion spring 62 is in a balanced state, the length direction of the resisting rod 61 is perpendicular to the length direction of the fixed rod 42, and the torsion spring 62 rotates and retracts along the direction in which the resisting rod 61 resists the side wall of the upper die base 11.

[0051] Reference Figure 3 The slide groove 21 includes a main groove 3 for the slider 22 to slide and a sub-groove 31. There are two sub-grooves 31. The two sub-grooves 31 are symmetrically opened on the inner wall of the injection hole 2. The sub-grooves 31 are connected between the inner wall of the main groove 3 and the inner wall of the injection hole 2. The length of the cross section of the sub-groove 31 is equal to the cross-sectional diameter of the injection hole 2. An elastic sealing layer 34 is fixedly connected to the inner wall of the sub-groove 31. The elastic sealing layer 34 is located on the inner wall of the sub-groove 31 near the injection hole 2, and the elastic sealing layer 34 is used to close the opening of the sub-groove 31. In the embodiment of the present application, the elastic sealing layer 34 is made of a flexible material with high temperature resistance and corrosion resistance.

[0052] Reference Figure 3 , a resisting block 32 slides in each of the two slots 31, the height direction of the resisting block 32 extends along the depth direction of the slot 31, and the resisting block 32 slides along the depth direction of the slot 31, the length of the resisting block 32 is equal to the diameter of the cross section of the injection hole 2, the outer wall of the resisting block 32 is in contact with the inner wall of the slot 31, and the two resisting blocks 32 slide from the slot 31 into the injection hole 2, at which time the resisting block 32 pushes the elastic sealing layer 34 to deform to close the opening of the injection hole 2, thereby achieving the closure of the cross section of the injection hole 2. The elastic sealing layer 34 is thicker at the position where it contacts the resisting block 32 first, which is used to provide deformation stretching margin during stretching.

[0053] Reference Figure 3 A second spring 35 is fixedly connected between the end side wall of the resistance block 32 away from the injection hole 2 and the bottom wall of the sub-slot 31 away from its own opening surface. The length direction of the second spring 35 extends along the depth direction of the sub-slot 31, that is, the second spring 35 expands and contracts along the sliding direction of the resistance block 32. A first guide groove 33 is provided on the side wall of the resistance block 32 at a position corresponding to the opening surface of the main groove 3. Two trigger blocks 72 are fixedly connected to the end side wall of the slider 22 close to the injection hole 2. The trigger blocks 72 are symmetrically distributed at both ends of the side wall of the slider 22, and the two trigger blocks 72 correspond to the two resistance blocks 32 one by one. The trigger block 72 is used to penetrate from the main groove 3 to the inner wall of the first guide groove 33 in the sub-slot 31. The inner wall of the first guide groove 33 is inclined and is used to cooperate with the end of the trigger block 72. The trigger block 72 abuts against the inclined inner wall of the first guide groove 33. Under the guidance of the inclined inner wall of the first guide groove 33, the abutment block 32 slides in the sub-groove 31. The abutment block 32 is used to close the opening surface of the injection hole 2.

[0054] Reference Figure 8 A second guide groove 6 is provided on the side wall of the slider 22 facing the control groove 23, and the second guide groove 6 is connected to the control groove 23. The inner wall of the second guide groove 6 is inclined, and the inclined inner wall of the second guide groove 6 is used to contact the end of the locking rod 43 to control the sliding of the slider 22.

[0055] Reference Figure 2 and Figure 3 The second spring 35 is always in a compressed state in the slot 31, that is, when the resistance block 32 is in a balanced state, the resistance block 32 pushes the elastic sealing layer 34 to deform under the elastic force of the second spring 35 to close the opening of the injection hole 2, and the first guide groove 33 is inclined toward the inner wall of the injection hole 2, and the closer the inner wall of the inclined first guide groove 33 is to its own opening surface, the farther it is from the injection hole 2, that is, the inner wall of the first guide groove 33 facing the injection hole 2 is inclined in the direction away from the injection hole 2.

[0056] Reference Figure 2 and Figure 3 and Figure 8The side wall of the second guide groove 6 facing away from the injection hole 2 is inclined, and the closer the inclined second guide groove 6 is to its own opening surface, the closer it is to the injection hole 2, that is, the inner wall of the second guide groove 6 facing away from the injection hole 2 is inclined toward the injection hole 2.

[0057] Reference Figure 2 and Figure 3 and Figure 4 There are two control slots 23, and the two control slots 23 correspond one to one with the locking rods 43 on the two fixing rods 42, but there is only one slide slot 21, and the slide slot 21 is also only connected to one control slot 23 (hereinafter referred to as the first control slot 23 to represent this control slot 23), and the other control slot 23 (hereinafter referred to as the second control slot 23 to represent this control slot 23) only serves to allow the locking rod 43 to be inserted and stabilized, and the depth of the second control slot 23 is equal to the distance between the opening surface of the first control slot 23 and the bottom wall of the second guide slot 6.

[0058] The implementation principle of the injection molding machine for terminal processing in Example 1 of the present application is as follows: when the control rod 4 is extended under the control of the telescopic rod of the driving cylinder, the control rod 4 will push the first spring 44, and the first spring 44 will push the lower mold base 12 to slide in the direction close to the upper mold base 11. When the upper mold 13 and the lower mold 14 are covered, the control rod 4 continues to extend under the control of the telescopic rod of the driving cylinder. At this time, it is difficult to continue to push and slide due to the conflict between the upper mold base 11 and the lower mold base 12. At this time, the first spring 44 will be compressed under the action of the control rod 4, and the control rod 4 will go deep into the slot 41. direction, at this time, the top block 5 slides in the direction close to the rotation axis of the fixed rod 42, so that the limit block 53 slides in the limit groove 52 in the direction close to the rotation axis of the fixed rod 42, so that the end of the fixed rod 42 rotates in the direction close to the upper die base 11, so that the resistance rod 61 resists the side wall of the upper die base 11 facing away from the lower die base 12. When the fixed rod 42 continues to rotate, the resistance rod 61 is difficult to rotate due to the resistance on the side wall of the upper die base 11, thereby causing the torsion spring 62 to rotate, and the restoring force of the torsion spring 62 will increase the pressure of the resistance rod 61 against the side wall of the upper die base 11.

[0059] At the same time, the locking rod 43 will be inserted into the control slot 23, and the end of the locking rod 43 will be inserted into the second guide slot 6 through the control slot 23 and abut against the inclined inner wall of the second guide slot 6. As the fixing rod 42 continues to rotate, the locking rod 43 penetrates into the second guide slot 6. At this time, the slider 22 will slide in the main slot 3 in the direction close to the sub-slot 31 under the guidance of the inclined inner wall of the second guide slot 6. At this time, the trigger block 72 will be inserted into the sub-slot 31 and inserted into the first guide slot 33 through the opening surface of the sub-slot 31 and abut against the inclined inner wall of the first guide slot 33. As the trigger block 72 penetrates deeper, the abutment block 32 will slide in the sub-slot 31 in the direction away from the injection hole 2 under the guidance of the inclined inner wall of the first guide slot 33, and finally the two abutment blocks 32 slide into the sub-slot 31, so that the injection hole 2 opening is opened.

[0060] After the injection molding is completed, the control rod 4 is first controlled to retract, so that the push block 5 slides in the clearance groove 51, thereby controlling the fixed rod 42 to rotate, so that the locking rod 43 withdraws from the second guide groove 6, so that the resistance block 32 pushes the elastic sealing layer 34 to deform and close the injection hole 2 under the elastic force of the second spring 35. However, the retraction distance of the control rod 4 is less than the sliding distance of the control rod 4 in the slot 41, so that the lower mold base 12 still resists the upper mold base 11, and the resistance rod 61 still resists the upper mold base 11.

[0061] Embodiment 2:

[0062] Different from Example 1, Fig. 9 and Fig.10 The second spring 35 is always in a balanced state in the sub-slot 31, that is, when the resistance block 32 is in a balanced state, the resistance block 32 is completely retracted in the sub-slot 31 under the elastic state of the second spring 35, so that the injection hole 2 is in an open state, and the inner wall of the first guide groove 33 facing away from the injection hole 2 is inclined, and the closer the inner wall of the inclined first guide groove 33 is to its own opening surface, the closer it is to the injection hole 2, that is, the inner wall of the first guide groove 33 facing away from the injection hole 2 is inclined toward the direction close to the injection hole 2.

[0063] Reference Fig.10 and Fig.11 , and the side wall of the second guide groove 6 is inclined toward the injection hole 2. The closer the inclined second guide groove 6 is to its own opening surface, the farther it is from the injection hole 2, that is, the inner wall of the second guide groove 6 toward the injection hole 2 is inclined in the direction away from the injection hole 2. A third spring 73 is fixedly connected between the outer side wall of the slider 22 away from the injection hole 2 and the bottom wall of the main groove 3 away from the injection hole 2. The third spring 73 is always in a compressed state, that is, the slider 22 is inserted into the first guide groove 33 under the elastic force of the third spring 73.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection molding machine for terminal processing, comprising a base (1), an upper mold base (11) being arranged on the base (1), a lower mold base (12) being slidably arranged on the base (1), an upper mold (13) being mounted on the upper mold base (11), a lower mold (14) being mounted on the lower mold base (12) for covering the upper mold (13), an injection hole (2) for injection molding being provided on the upper mold base (11) and the upper mold (13), characterized in that: A slide groove (21) is provided on the inner wall of the injection hole (2) of the upper mold base (11), a slider (22) slides in the slide groove (21) for sealing the opening of the injection hole (2), a control through groove (23) is provided through the upper mold base (11) for controlling the sliding of the slider (22), and the control through groove (23) is connected to the slide groove (21); The base (1) is telescopically provided with a control rod (4), the lower die base (12) is provided with a slot (41) for inserting the end of the control rod (4), the lower die base (12) is rotatably provided with a fixing rod (42), the end of the fixing rod (42) is provided with a locking rod (43), the end of the locking rod (43) is used to be inserted into the control slot (23) and abut against the slider (22); The end of the control rod (4) slides in the slot (41), a first spring (44) is arranged between the end of the control rod (4) and the bottom wall of the slot (41), the first spring (44) is extended and retracted along the sliding direction of the control rod (4), and a top block (5) is arranged on the control rod (4), the top block (5) is used to contact the side wall of the fixed rod (42) to control the rotation of the fixed rod (42); A clearance groove (51) for the top block (5) to be inserted and slide is provided on the side wall of the fixing rod (42), and a limiting groove (52) is provided on the inner wall of the clearance groove (51). Both the clearance groove (51) and the limiting groove (52) extend along the telescopic direction of the control rod (4), and a limiting block (53) for being inserted into the limiting groove (52) and sliding is provided on the top block (5).

2. The injection molding machine for terminal processing according to claim 1, characterized in that: The slide groove (21) comprises a main groove (3) for sliding the slider (22) and a sub-groove (31); the sub-groove (31) is connected between the inner wall of the main groove (3) and the inner wall of the injection hole (2); a resistance block (32) slides in the sub-groove (31); a first guide groove (33) is provided at the end of the resistance block (32); the inner wall of the first guide groove (33) is inclined and is used to resist and cooperate with the end of the slider (22) to control the sliding of the resistance block (32); the resistance block (32) is used to close the opening surface of the injection hole (2); a second spring (35) is provided between the resistance block (32) and the bottom wall of the sub-groove (31); the second spring (35) is extended and retracted along the sliding direction of the resistance block (32).

3. The injection molding machine for terminal processing according to claim 2, characterized in that: An elastic sealing layer (34) is provided on the inner wall of the sub-groove (31), and the elastic sealing layer (34) seals the opening of the sub-groove (31). The abutment block (32) pushes the elastic sealing layer (34) to deform and seal the opening of the injection hole (2).

4. The injection molding machine for terminal processing according to claim 2, characterized in that: The slider (22) is provided with a second guide groove (6), the second guide groove (6) being connected to the control through groove (23), the inner wall of the second guide groove (6) being inclined, and the inclined inner wall of the second guide groove (6) being used to contact with the locking rod (43) to control the sliding of the slider (22), so that the slider (22) is inserted into the first guide groove (33) to open the injection hole (2).

5. The injection molding machine for terminal processing according to claim 1, characterized in that: A resisting rod (61) is also rotatably provided on the fixed rod (42), and the resisting rod (61) is used to resist the upper die seat (11). A torsion spring (62) is provided on the rotating shaft of the resisting rod (61), and the torsion spring (62) rotates and retracts in the direction in which the resisting rod (61) resists the side wall of the upper die seat (11).

6. The injection molding machine for terminal processing according to claim 4, characterized in that: A third spring (73) is provided between the slider (22) and the inner wall of the main groove (3), and the third spring (73) is retracted and contracted along the sliding direction of the slider (22).

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