Injection molding machine with replaceable injection head

Abstract

The application provides an injection molding machine with a replaceable injection molding head, and relates to the technical field of injection molding. The injection molding machine comprises a main body, a melting cavity arranged on the front top side of the main body, the melting cavity being movable forward and backward, an injection pipe fixedly arranged at the rear end of the melting cavity, a heater arranged in the injection pipe, a transmission cavity fixedly arranged on the rear top side of the main body, a mold installed on the front side of the transmission cavity, and two groups of spring rods A fixedly arranged on the front side of the mold. According to the switching sliding seat of each embodiment of the application, the structure capable of quickly switching the injection molding head is provided. The electric cylinder is started to drive the advancing rack to move, the advancing rack drives the driven gear to rotate, the driven gear drives the swing rod to move, the swing rod drives the advancing sleeve to move, the advancing sleeve drives the strip-shaped frame to move, the up-and-down movement of the switching sliding seat is realized, and bidirectional switching is realized. When one group of injection molding heads is aligned with the assembly joint, injection molding can be performed, and the problem that the existing injection molding machine lacks the structure capable of quickly switching the injection molding head is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, in particular to an injection molding machine with a function of replacing an injection molding head. Background Art

[0002] Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastic plastics or thermosetting plastics. It inserts the injection head into the mold to deliver plastic liquid for injection molding, and injection molding is achieved through the injection head.

[0003] However, the injection molding machines currently in use mainly have fixed injection heads. If a power outage occurs during the injection process, the plastic will solidify in the injection pipe. The injection molding machines currently in use lack a structure that can quickly switch the injection head, and it is inconvenient to flush and clean the injection head. Summary of the Invention

[0004] In view of this, the present invention provides an injection molding machine with a function of replacing an injection head, which has a switching slide and provides a function of switching the injection head, thereby ensuring rapid connection of injection molding.

[0005] The present invention provides an injection molding machine with a function of replacing an injection molding head, specifically comprising: a main body, a molten plastic bin is provided on the top front side of the main body, the molten plastic bin can move back and forth, an injection molding tube is fixedly provided at the rear end of the molten plastic bin, and a heater is provided inside the injection molding tube; a transmission bin is fixedly provided on the top rear side of the main body, a mold is installed on the front side of the transmission bin, and two groups of spring rods A are fixedly provided on the front side of the mold; a switching slide, an assembly joint is fixedly provided on the front end of the switching slide, and the assembly joint is fixed on the rear side of the injection molding tube; blocking blocks are fixedly provided on the upper and lower ends of the switching slide; a rotating rack, the number of which is set to two groups, and the two groups of rotating racks are fixedly provided on the switching slide In the middle of the two rear sides; a switching slide, the switching slide is slidably arranged in the switching slide; a chassis, the chassis is fixedly arranged at the bottom of the lower side block; a U-shaped channel, the U-shaped channel slides on the outside of the two sets of spring rods A, and the spring rods A are sleeved with springs and fixed with baffles through the U-shaped channel; a transmission wheel, the transmission wheel is rotatably arranged on the right side of the transmission bin, and a motor is arranged in the transmission bin to be connected to the transmission wheel; a ventilation seat, the number of the ventilation seats is set to two groups, and the two groups of ventilation seats are fixedly arranged at the upper and lower ends of the right side of the transmission bin; a connecting pipe, the number of the connecting pipe is set to two groups, and the two groups of connecting pipes are fixedly arranged on the front and back sides of the middle of the two groups of ventilation seats.

[0006] Optionally, the switching slide further comprises: an insulating block sliding in the inner walls on both sides of the switching slide, a spring rod B is fixedly arranged outside the switching slide, a baffle is fixedly arranged on the side of the spring and passes through the switching slide; a triangular electrode is fixedly arranged in the middle of the insulating block, a connecting post is connected to one side of the triangular electrode and passes through the insulating block; two groups of receiving rings are connected and arranged on the front side of the switching slide.

[0007] Optionally, the rotating frame comprises: a swing rod, a swing rod is rotatably arranged in the middle of the rear end of the rotating frame on both sides, and two groups of swing rods are rotatably arranged in the middle; a driven gear is fixedly arranged at the outer end of the rotating shaft connected with the swing rod.

[0008] Optionally, the switching slide comprises: an injection head, two groups of injection heads are integrally arranged on the rear side of the switching slide; two groups of sealing rings are embedded on the front side of the switching slide, and the centers of the sealing rings are aligned with the centers of the injection heads; a tubular heater is fixedly arranged in the middle of the tubular heater, the two sides of the tubular heater are arranged as corner structures turning to both sides, the corner structures are fixed in the switching slide, the edge ends of the corner structures are right angle structures and are consistent with the corner structures; a strip-shaped frame is fixedly arranged in the middle of the rear side of the switching slide; a push sleeve slides in the strip-shaped frame.

[0009] Optionally, the bottom frame comprises: an electric cylinder, the rear ends of the two sides of the bottom frame are protruding structures, two groups of electric cylinders are fixedly arranged on the top of the protruding structures, and a push rack is fixedly arranged on the top of the electric cylinder; the push rack is slidingly connected with the rotating frame, and the push rack is engaged with the driven gear.

[0010] Optionally, the U-shaped channel comprises: a U-shaped sleeve, a U-shaped sleeve is fixedly arranged at the end of the inner wall of the U-shaped channel, and a sliding piece is integrally arranged at the inner side of the rear end of the U-shaped sleeve; a sliding sleeve is slidingly arranged in the U-shaped sleeve; a spring is arranged in the middle of the U-shaped sleeve and the sliding sleeve; a side channel is integrally arranged on the outer side of the rear side of the sliding sleeve, and a strip-shaped air hole is formed in the front side of the side channel.

[0011] Optionally, the transmission wheel comprises: an eccentric rod, an eccentric rod is fixedly arranged on the outer side of the transmission wheel.

[0012] Optionally, the air seat comprises: a piston, two groups of air seats are connected and arranged with a piston on the adjacent side, and a strip-shaped frame is fixedly arranged at the telescopic end of the upper and lower pistons; an eccentric rod slides in the strip-shaped frame.

[0013] Optionally, the connecting pipe comprises: a one-way valve, a one-way valve is fixedly arranged at both ends of the connecting pipe; a pipeline is arranged in the middle of the front connecting pipe and connected with the U-shaped channel; a three-way pipe is connected in the middle of the rear connecting pipe, and two groups of electromagnetic valves are connected and arranged at the other two ends of the three-way pipe.

[0014] Advantages

[0015] The switching slide according to the embodiments of the present application provides a structure capable of quickly switching the injection head, the electric cylinder is started to drive the advancing rack to move, the advancing rack drives the driven gear to rotate, the driven gear drives the swing rod to move, the swing rod drives the advancing sleeve to move, the advancing sleeve drives the strip-shaped frame to move, the up-down movement of the switching slide is realized, and then bidirectional switching is realized, and the injection can be performed when a group of injection heads is aligned with the assembly joint.

[0016] In addition, the setting of the tubular heater provides the butt joint type connection melting function, when the restart is performed in the case of the breakage, the heater inside the injection pipe is started, the heater adopts a high-power heater, and the inside of the injection pipe is directly quickly melted after the heater is powered on, and the switching injection head can be controlled when the inside of the injection pipe is melted; the inside of the injection head is melted through the tubular heater; when the blocked injection head is switched to one side, the triangular electrode is in contact communication with the two sides of the tubular heater, and the melting can be performed when the electricity is connected; the accommodation ring can accommodate the injection liquid.

[0017] In addition, the setting of the piston piece provides the conveying function, the strip-shaped frame is driven to realize the reciprocating movement by rotating the motor-driven transmission wheel and the eccentric rod, and then the conveying force is generated by the repeated volume change of the piston piece, the injection head that needs to be cleaned is moved backward to contact and press the sliding sleeve, and then the water in the U-shaped channel or the injection liquid that passes through the strip-shaped air hole is input into the injection head from the middle of the sliding sleeve to realize the cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings described in the following description only relate to some embodiments of the present application, and are not a limitation on the present application.

[0020] In the drawings:

[0021] Figure 1 A perspective structural schematic view according to the embodiments of the present application is shown;

[0022] Figure 2 An axonometric structural schematic view according to the embodiments of the present application is shown;

[0023] Figure 3 A top view structural schematic view according to the embodiments of the present application is shown;

[0024] Figure 4 A perspective structural schematic view of the switching slide according to the embodiments of the present application is shown;

[0025] Figure 5A perspective view of a switching slide according to an embodiment of the present application is shown.

[0026] Figure 6 A perspective view of a switching slide according to an embodiment of the present application is shown.

[0027] Figure 7 A perspective view of a switching slide according to an embodiment of the present application is shown.

[0028] Figure 8 A perspective view of a switching slide according to an embodiment of the present application is shown.

[0029] List of reference signs

[0030] 1, main body; 101, melting bin; 102, injection tube; 103, transmission bin; 104, mold; 105, spring rod A; 2, switching slide; 201, blocking block; 202, insulating block; 203, spring rod B; 204, triangular electrode; 205, connecting pile; 206, containing ring; 207, assembly joint; 3, rotating frame; 301, swing lever; 302, advancing sleeve; 303, driven gear; 4, switching slide; 401, injection head; 402, sealing ring; 403, tubular heater; 404, insulating strip; 405, strip frame; 5, base frame; 501, electric cylinder; 502, advancing rack; 6, U-shaped channel; 601, U-shaped sleeve; 602, sliding sheet; 603, sliding sleeve; 604, side channel; 605, strip-shaped air hole; 7, transmission wheel; 701, eccentric rod; 8, air seat; 801, piston piece; 802, strip frame; 9, connecting tube; 901, one-way valve; 10, electromagnetic valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, scheme and advantages of the technical solutions of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the specific embodiments of the present application. The terms used herein have the meanings commonly used in the art unless otherwise specified. The same reference signs in the drawings represent the same components.

[0032] Embodiment: Please refer to Figures 1 to 8 :

[0033] The application provides an injection molding machine with a replaceable injection molding head function, which comprises a main body 1, a melt molding bin 101 arranged on the top front side of the main body 1, the melt molding bin 101 being capable of moving forward and backward, an injection molding pipe 102 fixedly arranged at the rear end of the melt molding bin 101, a heater arranged in the injection molding pipe 102, the heater being a high-power heater, and the heater being capable of directly rapidly melting the inside of the injection molding pipe 102 after being powered on, a transmission bin 103 fixedly arranged on the top rear side of the main body 1, a mold 104 mounted on the front side of the transmission bin 103, two groups of spring rods A 105 fixedly arranged on the front side of the mold 104, a switching sliding row 2, an assembly joint 207 fixedly arranged at the front end of the switching sliding row 2, the assembly joint 207 being fixed on the rear side of the injection molding pipe 102, blocking blocks 201 fixedly arranged on the upper and lower ends of the switching sliding row 2, two groups of rotating frames 3 fixedly arranged at the middle of the rear sides of the switching sliding row 2, a switching sliding seat 4 slidingly arranged in the switching sliding row 2, a base frame 5 fixedly arranged at the bottom of the lower blocking block 201, U-shaped channels 6 slidingly arranged outside the two groups of spring rods A 105, the spring rods A 105 being sleeved with springs and fixedly provided with flaps through the U-shaped channels 6, a transmission wheel 7 rotationally arranged on the right side of the transmission bin 103, a motor arranged in the transmission bin 103 and in transmission connection with the transmission wheel 7, two groups of air vent seats 8 fixedly arranged on the upper and lower ends of the right side of the transmission bin 103, and two groups of connecting pipes 9 fixedly arranged on the front and rear sides of the middle of the two groups of air vent seats 8.

[0034] In addition, according to the embodiment of the application, referring to Figure 6 The switching sliding row 2 further comprises: an insulating block 202 sliding in the inner walls of the two sides of the switching sliding row 2, spring rods B 203 fixedly arranged outside the switching sliding row 2, the switching sliding row 2 being sleeved with springs and fixedly provided with flaps through the edges of the switching sliding row 2, a triangular electrode 204 fixedly arranged in the middle of the insulating block 202, the triangular electrode 204 being connected with a connecting pile 205 through the insulating block 202 on one side, and two groups of containing rings 206 connected and arranged on the front side of the switching sliding row 2.

[0035] In addition, according to the embodiment of the application, referring to Figure 5 The rotating frame 3 comprises: a swing rod 301 rotationally arranged in the middle of the rear end of the two rotating frames 3, and a pushing sleeve 302 rotationally arranged in the middle of the two swing rods 301.

[0036] In addition, according to the embodiment of the application, referring to Figure 7The switching sliding seat 4 comprises: injection heads 401, two groups of which are integrally arranged on the rear side of the switching sliding seat 4; sealing rings 402, two groups of which are embedded on the front side of the switching sliding seat 4, and the centers of the sealing rings 402 are aligned with the centers of the injection heads 401; a tubular heater 403, an insulating strip 404 being fixedly arranged in the middle of the tubular heater 403, and the front ends of the two sides of the tubular heater 403 are arranged as corner structures which are turned to the two sides, the corner structures are fixed in the switching sliding seat 4, and the edge ends of the corner structures are right-angle structures and are consistent with the corner structures; a strip-shaped frame 405, which is fixedly arranged on the rear side of the switching sliding seat 4; and the advancing sleeve 302 which is slidingly arranged in the strip-shaped frame 405; the inside of the injection head 401 is melted by the tubular heater 403; when the blocked injection head 401 is switched to one side, the triangular electrode 204 is in contact communication with the two sides of the tubular heater 403, and at this time, the melting can be performed by being connected to electricity.

[0037] In addition, according to the embodiment of the present application, referring to Figure 4 The base frame 5 comprises: electric cylinders 501, two groups of which are fixedly arranged on the top of the convex structures on the two sides of the rear end of the base frame 5, and the top of each electric cylinder 501 is fixedly arranged with an advancing rack 502; the advancing rack 502 is slidingly connected with the rotating frame 3, and the advancing rack 502 is engaged with the driven gear 303; the electric cylinder 501 is started to drive the advancing rack 502 to move, the advancing rack 502 drives the driven gear 303 to rotate, the driven gear 303 drives the swing lever 301 to move, the swing lever 301 drives the advancing sleeve 302 to move, the advancing sleeve 302 drives the strip-shaped frame 405 to move, the up-and-down movement of the switching sliding seat 4 is realized, and then the bidirectional switching is realized, and the injection can be performed when one group of injection heads 401 is aligned with the assembly joint 207.

[0038] In addition, according to the embodiment of the present application, referring to Figure 8 The U-shaped channel 6 comprises: U-shaped sleeves 601, which are fixedly arranged on the inner wall ends of the upper and lower sides of the U-shaped channel 6, and the inner rear ends of the U-shaped sleeves 601 are integrally arranged with sliding sheets 602; sliding sleeves 603, which are slidingly arranged in the U-shaped sleeves 601; springs, which are arranged between the U-shaped sleeves 601 and the sliding sleeves 603; side channels 604, which are integrally arranged on the outer rear side of the sliding sleeve 603, and the front side of the side channel 604 is provided with a strip-shaped air hole 605.

[0039] In addition, according to the embodiment of the present application, referring to Figure 1 The transmission wheel 7 comprises: eccentric rods 701, which are fixedly arranged on the outer side of the transmission wheel 7.

[0040] In addition, according to the embodiment of the present application, referring to Figure 1, the ventilation seat 8 includes: piston piece 801, two groups of ventilation seat 8 adjacent sides are connected and provided with piston piece 801, the telescopic end of the upper and lower piston piece 801 is fixedly provided with strip frame 802, the eccentric rod 701 slides in the strip frame 802;The motor drive transmission wheel 7 and eccentric rod 701 rotate, the eccentric rod 701 drives the strip frame 802 to realize reciprocating motion, and then the piston piece 801 repeatedly changes the capacity to generate the conveying force.

[0041] In addition, according to the embodiment of the application, referring to Figure 1 , the connecting pipe 9 includes: one-way valve 901, both ends of the connecting pipe 9 are fixedly provided with one-way valve 901;The middle of the front connecting pipe 9 is provided with a pipeline connected with the U-shaped channel 6;The middle of the rear connecting pipe 9 is provided with a pipeline connected with a three-way pipe, and the other two ends of the three-way pipe are provided with two groups of electromagnetic valves 10.

[0042] First embodiment

[0043] As shown in the drawings, the present application provides an injection molding machine with the function of replacing injection molding head, which provides the function of switching injection molding head 401;

[0044] The specific use mode and effect of the embodiment are as follows: Figure 5 , the two sides of the chassis 5 are provided with protruding structures, and the top of the protruding structures is fixedly provided with two groups of electric cylinders 501, and the top of the electric cylinder 501 is fixedly provided with a push rack 502;The push rack 502 is slidably connected with the rotating frame 3, and the push rack 502 is engaged with the driven gear 303;

[0045] The electric cylinder 501 drives the push rack 502 to move, the push rack 502 drives the driven gear 303 to rotate, the driven gear 303 drives the swing rod 301 to move, the swing rod 301 drives the push sleeve 302 to move, the push sleeve 302 drives the strip frame 405 to move, the up and down movement of the switching sliding seat 4 is realized, and then the bidirectional switching is realized, and when one group of injection molding head 401 is aligned with the assembly joint 207, the injection molding can be carried out.

[0046] Second embodiment

[0047] As shown in the drawings, the present application provides an injection molding machine with the function of replacing injection molding head, which provides the function of eliminating plastic;

[0048] The specific use mode and effect of the embodiment are as follows: Figure 7The switching sliding seat 4 comprises: injection heads 401, two groups of which are integrally arranged on the rear side of the switching sliding seat 4; sealing rings 402, two groups of which are embedded on the front side of the switching sliding seat 4, and the centers of the sealing rings 402 are aligned with the centers of the injection heads 401; a tubular heater 403, an insulating strip 404 being fixedly arranged in the middle of the tubular heater 403, and the front ends of the two sides of the tubular heater 403 are arranged as corner structures which are turned to the two sides, the corner structures are fixed in the switching sliding seat 4, and the edge ends of the corner structures are right-angle structures and are consistent with the corner structures; a strip-shaped frame 405, which is fixedly arranged in the middle of the rear side of the switching sliding seat 4; and a pushing sleeve 302 which slides in the strip-shaped frame 405.

[0049] When the machine is restarted after the breakage, the heater inside the injection pipe 102 is started, which is a high-power heater and directly melts the inside of the injection pipe 102 after being electrified, and the switching of the injection head 401 can be controlled when the inside of the injection pipe 102 is melted; the inside of the injection head 401 is melted by the tubular heater 403; when the blocked injection head 401 is switched to one side, the triangular electrode 204 is in contact with the two sides of the tubular heater 403, and melting can be performed at this time; the accommodation ring 206 can accommodate the injection liquid.

[0050] Third embodiment

[0051] As shown in the drawings, the present application provides an injection molding machine with a replaceable injection head, which provides the functions of cleaning and flushing the injection head.

[0052] The specific use and effect of the embodiment are as follows: Figure 1 The adjacent sides of the two groups of air vent seats 8 are connected with piston members 801, the telescopic ends of the piston members 801 on the upper and lower sides are fixedly provided with strip-shaped frames 802, and the eccentric rod 701 slides in the strip-shaped frames 802; the two ends of the connecting pipe 9 are fixedly provided with one-way valves 901; the middle of the front connecting pipe 9 is provided with a pipeline which is connected with the U-shaped channel 6; the middle of the rear connecting pipe 9 is provided with a three-way pipe, and the other two ends of the three-way pipe are connected with two groups of electromagnetic valves 10.

[0053] The motor drives the transmission wheel 7 and the eccentric rod 701 to rotate, the eccentric rod 701 drives the strip-shaped frame 802 to realize reciprocating motion, and then the piston 801 repeatedly changes the volume to generate the conveying force; two groups of electromagnetic valves 10 are connected with air and water sources respectively, when water washing is needed, the electromagnetic valve 10 connected with the water source is opened, then the water passes through the electromagnetic valve 10 and enters the rear connecting pipe 9, then passes through the rear one-way valve 901 and enters the air seat 8, then passes through the front one-way valve 901 and enters the connecting pipe 9, and finally enters the U-shaped channel 6; the injection head 401 to be cleaned is moved backward to contact and press the sliding sleeve 603, then the water in the U-shaped channel 6 passes through the strip-shaped air hole 605 and enters the injection head 401 from the middle of the sliding sleeve 603 to flush, and the electromagnetic valve 10 connected with the air is opened to clean the gas.

[0054] Finally, it should be noted that, in the description of the position of each component and the cooperation relationship therebetween, etc., one pair of components is usually taken as an example, however, those skilled in the art should understand that such position and cooperation relationship are also applicable to other components or other pairs of components.

[0055] The above description is only exemplary embodiments of the present application, and is not intended to limit the protection scope of the present application, and the protection scope of the present application is determined by the appended claims.

Claims

1. An injection molding machine with a function of replacing an injection molding head, characterized in that: include: A main body (1), wherein a molten plastic bin (101) is provided on the top front side of the main body (1), the molten plastic bin (101) can move forward and backward, an injection molding tube (102) is fixedly provided on the rear end of the molten plastic bin (101), and a heater is provided inside the injection molding tube (102); a transmission bin (103) is fixedly provided on the top rear side of the main body (1), a mold (104) is installed on the front side of the transmission bin (103), and two groups of spring rods A (105) are fixedly provided on the front side of the mold (104); a switching slide (2), wherein an assembly joint (207) is fixedly provided on the front end of the switching slide (2), and the assembly joint (207) is fixed on the rear side of the injection molding tube (102); a blocking block (201) is fixedly provided on the upper and lower ends of the switching slide (2); a rotating rack (3), wherein the number of the rotating racks (3) is set to two groups, and the two groups of rotating racks (3) are fixedly provided on both sides of the rear of the switching slide (2). a switching slide (4), the switching slide (4) being slidably arranged in the switching slide (2); a bottom frame (5), the bottom frame (5) being fixedly arranged at the bottom of the lower block (201); a U-shaped channel (6), the U-shaped channel (6) slidingly arranged outside the two groups of spring rods A (105), and the spring rods A (105) being sleeved with springs and passing through the U-shaped channel (6) and being fixedly provided with a blocking piece; a transmission wheel (7), the transmission wheel (7) being rotatably arranged on the right side of the transmission bin (103), and a motor being arranged in the transmission bin (103) and being transmission-connected with the transmission wheel (7); a ventilator (8), the number of the ventilator (8) being set to two groups, and the two groups of ventilator (8) being fixedly arranged at the upper and lower ends of the right side of the transmission bin (103); a connecting pipe (9), the number of the connecting pipe (9) being set to two groups, and the two groups of connecting pipes (9) being fixedly arranged at the front and rear sides of the middle of the two groups of ventilator (8); The switching slide (2) further comprises: an insulating block (202), the insulating block (202) slides in the inner walls on both sides of the switching slide (2), a spring rod B (203) is fixedly provided on the outside of the switching slide (2), a spring is sleeved on the switching slide (2) and a blocking piece is fixedly provided through the side of the switching slide (2); a triangular electrode (204), a triangular electrode (204) is fixedly provided in the middle of the insulating block (202), and one side of the triangular electrode (204) passes through the insulating block (202) and is connected to a connecting pile (205); a receiving ring (206), two groups of receiving rings (206) are connected and provided on the upper and lower sides of the front side of the switching slide (2); The switching slide (4) comprises: an injection head (401), two groups of injection heads (401) are integrally arranged on the rear side of the switching slide (4); a sealing ring (402), two groups of sealing rings (402) are embedded on the front side of the switching slide (4), and the center of the sealing ring (402) is aligned with the center of the injection head (401); a tubular heater (403), an insulating strip (404) is fixedly arranged in the middle of the tubular heater (403), and the front ends of both sides of the tubular heater (403) are arranged as corner structures that turn to both sides, and the corner structures are fixed in the switching slide (4), and the side ends of the corner structures are right-angle structures and coincide with the corner structures; a strip frame (405), a strip frame (405) is fixedly arranged in the middle of the rear side of the switching slide (4); and the propulsion sleeve (302) slides in the strip frame (405).

2. An injection molding machine with a function of replacing an injection head as claimed in claim 1, characterized in that: The rotating frame (3) comprises: A swing rod (301) is rotatably provided in the middle of the rear ends of the rotating racks (3) on both sides, and a propulsion sleeve (302) is rotatably provided in the middle of the two sets of swing rods (301); A driven gear (303) is fixedly provided on the outer end of the rotating shaft connecting the rocker arm (301) and the rotating frame (3).

3. The injection molding machine with the function of replacing the injection head according to claim 1, characterized in that: The base frame (5) comprises: The electric cylinder (501) and the rear ends of both sides of the base frame (5) are protruding structures. Two groups of electric cylinders (501) are fixedly arranged on the top of the protruding structures. A propulsion rack (502) is fixedly arranged on the top of the electric cylinder (501); the propulsion rack (502) is slidably connected to the rotating frame (3), and the propulsion rack (502) is meshed with the driven gear (303).

4. The injection molding machine with the function of replacing the injection head according to claim 1, characterized in that: The U-shaped channel (6) includes: A U-shaped sleeve (601) is fixedly provided at the upper and lower inner wall ends of the U-shaped channel (6), and a sliding piece (602) is integrally provided at the inner rear end of the U-shaped sleeve (601); The sliding sleeve (603) is slidably arranged in the U-shaped sleeve (601); a spring is arranged between the U-shaped sleeve (601) and the sliding sleeve (603); A side channel (604) is integrally provided on the rear exterior of the sliding sleeve (603), and a strip-shaped air hole (605) is provided on the front side of the side channel (604).

5. The injection molding machine with the function of replacing the injection head according to claim 1, characterized in that: The transmission wheel (7) comprises an eccentric rod (701), and the eccentric rod (701) is fixedly arranged on the outer side of the transmission wheel (7).

6. The injection molding machine with the function of replacing the injection head according to claim 1, characterized in that: The vent seat (8) comprises a piston member (801), and the adjacent sides of the two groups of vent seats (8) are connected with the piston member (801), and the telescopic ends of the upper and lower piston members (801) are fixedly provided with a strip frame (802), and the eccentric rod (701) slides in the strip frame (802).

7. The injection molding machine with the function of replacing the injection head according to claim 1, characterized in that: The connecting pipe (9) comprises: a one-way valve (901), with the one-way valve (901) fixedly provided at both ends of the connecting pipe (9); a pipe provided in the middle of the front connecting pipe (9) connected to the U-shaped channel (6); and a pipe provided in the middle of the rear connecting pipe (9) connected to a tee, with two sets of solenoid valves (10) provided at the other two ends of the tee.

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