Injection molding machine for production workshop

Abstract

The invention discloses an injection molding machine for a production workshop, and relates to the technical field of injection molding machines, the injection molding machine comprises a workbench, an injection system, a fixed mold and a movable mold, and further comprises a fixed plate, a telescopic piece, a connecting plate, a fixed rod and an ejection mechanism, and the ejection mechanism comprises an ejection rod, a sliding plate, a first elastic piece, an ejection block and an air cavity buffer assembly. During demolding, the ejector block is firstly driven to move towards the side away from the injection molding part, a buffer air cavity space is generated between the ejector block and the injection molding part, when the ejector block ejects the injection molding part, the air cavity space buffers the jacking force, and the situation that the ejector block makes direct contact with the injection molding part in the early stage of ejection, and consequently the injection molding part is damaged is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to an injection molding machine used in a production workshop. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] Injection molding machines in the prior art mostly use ejectors to lift the molded parts to achieve the unloading of the molded parts. However, the ejectors are in direct contact with the molded parts. If the connection between the molded parts and the movable mold is tight, the molded parts may be damaged or have ejection marks during the lifting process. Therefore, an injection molding machine for production workshops is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an injection molding machine for a production workshop to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An injection molding machine for a production workshop, comprising a workbench, an injection system is arranged on the workbench, the workbench is connected to a fixed mold, the fixed mold is connected to the inside of the injection system, the fixed mold abuts against a movable mold, and a ejection hole is opened on the movable mold, and further comprising:

[0007] A fixed plate connected to the workbench;

[0008] A telescopic member, one end of which is connected to the fixed plate;

[0009] A connecting plate connected to the other end of the telescopic member, wherein a through hole is formed in the middle of the connecting plate;

[0010] A fixed rod, one end of which is connected to the connecting plate, and the other end of which is connected to the moving die;

[0011] The ejector mechanism has one end connected to the connecting plate and the other end connected to the movable mold, and is used to eject the injection molded part. The ejector mechanism includes:

[0012] A push rod connected to the fixing plate and located on the same horizontal line as the through hole on the connecting plate;

[0013] A sliding plate, slidably connected to the fixed rod;

[0014] An elastic member 1, one end of which is connected to the sliding plate, and the other end of which is connected to the movable mold;

[0015] The ejector block is located in the ejector hole of the moving die;

[0016] The air cavity buffer component is connected to the top block at one end and to the fixed plate at the other end, and is used to drive the top block to move and form a buffer air cavity between the top block and the injection molded part.

[0017] As a further solution of the present invention: the air cavity buffer assembly includes:

[0018] A fixed cylinder 1 connected to the sliding plate;

[0019] A sliding rod is slidably connected to the fixed cylinder and one end of the sliding rod is connected to the top block;

[0020] An air inlet pipe is connected to an end of the fixed cylinder 1 close to the sliding plate, and a one-way valve 1 is provided in the air inlet pipe;

[0021] Piston 1 is located inside the fixed cylinder 1 and is slidably connected to the inner wall thereof, and the piston 1 is connected to the other end of the sliding rod;

[0022] A connecting tube 1, one end of which is connected to an end of a fixed tube 1 close to the sliding plate;

[0023] An air bag, one end of which is connected to the other end of the connecting pipe;

[0024] Connecting pipe 2, connected to the interior of the other end of the airbag;

[0025] A cavity is provided inside the movable mold and is connected to the inside of the second connecting pipe. The cavity is provided with an air outlet hole connected to the ejection hole.

[0026] The power component has one end connected to the fixing cylinder and the other end connected to the fixing plate, and is used to drive the sliding rod to move.

[0027] As a further solution of the present invention: the power assembly comprises:

[0028] A sliding block, slidably connected to the connecting plate;

[0029] A support plate, one end of which is rotatably connected to the sliding block;

[0030] A connecting tube, rotatably connected to the other end of the support plate;

[0031] A connecting rod, one end of which is connected to the connecting tube;

[0032] Piston 2, connected to the other end of the connecting rod;

[0033] A second fixed cylinder, the inner wall of which is slidably connected to the second piston, and the second fixed cylinder is connected to the fixed plate;

[0034] A connecting pipe 3, one end of which is connected to the interior of the fixed cylinder 2, and the other end of which is connected to an end of the fixed cylinder 1 away from the sliding plate;

[0035] The motion sequencing component has one end connected to the sliding block and the other end connected to the connecting plate, and is used to limit the motion of the sliding block.

[0036] As a further solution of the present invention: the motion sequencing component comprises:

[0037] Magnet 1, connected to the sliding block;

[0038] Magnet 2 is connected to the connecting plate, and the magnetism of the magnet 2 is opposite to that of the magnet 1;

[0039] The second elastic member has one end connected to the sliding block and the other end connected to the connecting plate;

[0040] A positioning component, one end of which is connected to the second piston, and the other end of which is connected to the second fixing cylinder, is used to position the second piston.

[0041] As a further solution of the present invention: the positioning component includes:

[0042] Magnet three is connected to a side of piston two close to connecting pipe three;

[0043] Magnet four is connected to the inner wall of the fixing cylinder two, and the magnet four has opposite magnetic properties to the magnet three.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] When demoulding, the present invention first drives the top block to move toward the side away from the injection molded part, and a buffer air cavity space is generated between the top block and the injection molded part. When the top block ejects the injection molded part, the air cavity space buffers the lifting force, thereby preventing the top block from directly contacting the injection molded part in the early stage of ejection and causing damage to the injection molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic structural diagram of an injection molding machine for use in a production workshop according to an embodiment of the present invention.

[0047] Figure 2 Schematic diagram of the structure of the mold system in an embodiment of the present invention.

[0048] Figure 3 for Figure 2 Structural cross-section view.

[0049] Figure 4 for Figure 2 Schematic diagram of the structural decomposition.

[0050] Figure 5 Schematic diagram of the structure of the air cavity buffer assembly in an embodiment of the present invention.

[0051] Figure 6 It is a structural cross-sectional view of the air cavity buffer assembly in an embodiment of the present invention.

[0052] Figure 7 Schematic diagram of the structure of the power assembly in an embodiment of the present invention.

[0053] In the figure: 1, workbench; 2, injection system; 3, fixed mold; 4, fixed plate; 5, telescopic member; 6, connecting plate; 7, fixed rod; 8, movable mold; 9, ejector mechanism; 91, ejector rod; 92, sliding plate; 93, elastic member 1; 94, ejector block; 95, air cavity buffer assembly; 951, fixed cylinder 1; 952, sliding rod; 953, air intake pipe; 954, piston 1; 955, connecting pipe 1; 956, air bag; 957, connecting pipe 2; 958, cavity; 9 59. Power assembly; 9591. Sliding block; 9592. Support plate; 9593. Connecting cylinder; 9594. Connecting rod; 9595. Piston 2; 9596. Fixed cylinder 2; 9597. Connecting tube 3; 9598. Motion sequencing assembly; 95981. Magnet 1; 95982. Magnet 2; 95983. Elastic part 2; 95984. Positioning assembly; 959841. Magnet 3; 959842. Magnet 4; 10. Limit rod; 11. Storage slot. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the embodiment of the present invention, please refer to Figures 1 to 7 , an injection molding machine for a production workshop, comprising a workbench 1, an injection system 2 is provided on the workbench 1, the workbench 1 is connected to a fixed mold 3, the fixed mold 3 is connected to the inside of the injection system 2, the fixed mold 3 is in contact with a movable mold 8, and a top-feeding hole is provided on the movable mold 8, and further comprising:

[0056] A fixed plate 4 connected to the workbench 1;

[0057] The telescopic member 5 has one end connected to the fixed plate 4;

[0058] A connecting plate 6 is connected to the other end of the telescopic member 5, and a through hole is formed in the middle of the connecting plate 6;

[0059] A fixed rod 7, one end of which is connected to the connecting plate 6, and the other end of which is connected to the movable mold 8;

[0060] The ejection mechanism 9 is connected to the connecting plate 6 at one end and to the movable mold 8 at the other end, and is used to eject the injection molded part. The ejection mechanism 9 includes:

[0061] The top rod 91 is connected to the fixing plate 4 and is on the same horizontal line as the through hole on the connecting plate 6;

[0062] The sliding plate 92 is slidably connected to the fixing rod 7;

[0063] An elastic member 93, one end of which is connected to the sliding plate 92, and the other end of which is connected to the movable mold 8;

[0064] The ejector block 94 is located in the ejector hole of the movable mold 8;

[0065] The air cavity buffer component 95 is connected to the top block 94 at one end and to the fixing plate 4 at the other end, and is used to drive the top block 94 to move and form a buffer air cavity between the top block 94 and the injection molded part.

[0066] In the mold closing state, the sliding plate 92 is in contact with the connecting plate 6, the top block 94 is in the ejection hole, and the top block 94 and the surface of the movable mold 8 are in the same horizontal plane. After the injection molding is completed, the telescopic member 5 moves, driving the connecting plate 6 to move, and then driving the movable mold 8 to move and separate from the fixed mold 3. During the movement of the movable mold 8, the air cavity buffer component 95 is driven to move, and the air cavity buffer component 95 drives the top block 94 to move to the side close to the fixed plate 4, so that an air cavity space is generated between the top block 94 and the injection molded part. After the top block 94 moves a certain distance, Stop the movement, the connecting plate 6 drives the moving mold 8 to continue to move, so that the connecting plate 6 abuts against the ejector rod 91, and the connecting plate 6 stops moving. At this time, the moving mold 8 continues to move, so that the ejector block 94 is ejected from the ejection hole. During the ejection process, due to the existence of the air cavity space, there is a buffer space between the ejector block 94 and the injection molded part. After the injection molded part is lifted, the air cavity space disappears, the ejector block 94 contacts the injection molded part and completely ejects it to achieve demolding. The setting of the elastic member 93 ensures that when the mold is closed, the connecting plate 6 and the ejector block 94 return to their original positions. The telescopic member 5 can be an electric telescopic rod, a cylinder, etc. The elastic member 93 can be a spring, a spring, etc.

[0067] As an embodiment of the present invention, please refer to Figures 1 to 7 , the air cavity buffer component 95 includes:

[0068] A fixed cylinder 951 connected to the sliding plate 92;

[0069] The sliding rod 952 is slidably connected to the fixed cylinder 951, and one end of the sliding rod is connected to the top block 94;

[0070] The air inlet pipe 953 is connected to one end of the fixed cylinder 951 close to the sliding plate 92, and a one-way valve 1 is provided in the air inlet pipe 953;

[0071] A piston 954 is located inside the fixed cylinder 951 and is slidably connected to the inner wall thereof. The piston 954 is connected to the other end of the sliding rod 952;

[0072] A connecting tube 955, one end of which is connected to an end of a fixed tube 951 close to the sliding plate 92;

[0073] One end of the air bag 956 is connected to the other end of the connecting pipe 955;

[0074] A second connecting pipe 957 is connected to the inside of the other end of the air bag 956;

[0075] The cavity 958 is provided inside the movable mold 8 and communicated with the interior of the second connecting pipe 957. The cavity 958 is provided with an air outlet hole communicated with the ejection hole;

[0076] The power assembly 959 has one end connected to the fixed cylinder 951 and the other end connected to the fixed plate 4, and is used to drive the sliding rod 952 to move.

[0077] In the closed mold state, the ejector block 94 blocks the air outlet. When the injection molded part is ejected, the telescopic member 5 drives the connecting plate 6 to move, the connecting plate 6 drives the power assembly 959 to move, the power assembly 959 drives the piston 954 to move toward the side close to the fixed plate 4, the piston 954 drives the sliding rod 952 to move, the sliding rod 952 drives the ejector block 94 to move, and at the same time, the piston 954 moves to squeeze the air inside the fixed cylinder 951 near the fixed plate 4, so that the gas passes through the connecting pipe 95 5 enters the interior of the airbag 956. Since the air outlet is blocked by the top block 94 at this time, the gas cannot flow out, causing the airbag 956 to expand and the top block 94 to continue to move. When the top block 94 moves to the point where the air outlet is exposed, the power assembly 959 cannot drive the top block 94 to continue moving. The top block 94 is fixed in the top hole. At this time, the gas inside the airbag 956 enters the interior of the cavity 958 through the connecting pipe 957, and then flows out through the air outlet to between the top block 94 and the injection molded part, forming a buffer air cavity.

[0078] In this example, if the outflow rate of the air flow is large, the injection molded part will be lifted up, causing the buffer air cavity to disappear. The air flow will lift up the injection molded part, creating a gap between the injection molded part and the movable mold 8, ensuring that the injection molded part will not be damaged when the ejector block 94 lifts up the injection molded part.

[0079] In this embodiment, a second one-way valve is provided in the air outlet.

[0080] As an embodiment of the present invention, please refer to Figures 1 to 7 , the power assembly 959 includes:

[0081] Sliding block 9591 is slidably connected to the connecting plate 6;

[0082] The support plate 9592 has one end rotatably connected to the sliding block 9591;

[0083] The connecting tube 9593 is rotatably connected to the other end of the supporting plate 9592;

[0084] A connecting rod 9594, one end of which is connected to the connecting tube 9593;

[0085] Piston 2 9595, connected to the other end of connecting rod 9594;

[0086] The inner wall of the second fixed cylinder 9596 is slidably connected with the second piston 9595, and the second fixed cylinder 9596 is connected with the fixed plate 4;

[0087] The connecting tube 3 9597 has one end connected to the interior of the fixed tube 2 9596 and the other end connected to the end of the fixed tube 1 951 away from the sliding plate 92;

[0088] A motion sequencing component 9598, one end of which is connected to the sliding block 9591 and the other end of which is connected to the connecting plate 6, is used to limit the motion of the sliding block 9591;

[0089] The motion sequencing component 9598 includes:

[0090] A magnet 95981 is connected to a sliding block 9591;

[0091] The second magnet 95982 is connected to the connecting plate 6, and the second magnet 95982 has opposite magnetic properties to the first magnet 95981;

[0092] The second elastic member 95983 has one end connected to the sliding block 9591 and the other end connected to the connecting plate 6;

[0093] Positioning assembly 95984, one end of which is connected to piston 2 9595, and the other end of which is connected to fixing cylinder 2 9596, for positioning piston 2 9595;

[0094] The positioning assembly 95984 includes:

[0095] Magnet three 959841 is connected to one side of piston two 9595 close to connecting pipe three 9597;

[0096] Magnet four 959842 is connected to the inner wall of fixed cylinder two 9596, and the magnet four 959842 and magnet three 959841 have opposite magnetic properties.

[0097] In the mold closing state, magnet 1 95981 and magnet 2 95982 are magnetically attracted together, and magnet 3 959841 and magnet 4 959842 are in a separated state. When demoulding, telescopic member 5 drives connecting plate 6 to move toward the side close to fixed plate 4, thereby driving movable mold 8 to move synchronously, connecting plate 6 squeezes sliding block 9591, and since magnet 1 95981 and magnet 2 95982 are magnetically attracted together, sliding block 9591 moves synchronously with connecting plate 6, and sliding block 9591 drives support plate 9592 to move, and support plate 9592 moves synchronously with connecting plate 6. Plate 9592 drives connecting cylinder 9593 and connecting rod 9594 to move, and connecting rod 9594 drives piston 2 9595 to move, and presses the air inside fixed cylinder 2 9596 into fixed cylinder 1 951 through connecting pipe 3 9597, so that the space pressure on the side of fixed cylinder 1 951 close to movable mold 8 increases, and piston 1 954 moves toward the side close to fixed plate 4, thereby driving top block 94 to move, and piston 2 9595 drives magnet 3 959841 to move. When top block 94 moves to expose the air outlet, magnet 3 9598 41 is in contact with magnet four 959842 and is magnetically attracted together. At this time, connecting plate 6 continues to move to squeeze sliding block 9591. Since magnet three 959841 is in contact with magnet four 959842, piston two 9595 cannot continue to move. Under the squeezing force of connecting plate 6, magnet one 95981 is separated from magnet two 95982, and top block 94 stops moving in the ejection hole. At this time, connecting plate 6 continues to move, sliding block 9591 moves linearly along connecting plate 6, elastic member two 95983 undergoes elastic deformation, and when sliding block 9591 is in contact with magnet three 959841 and magnet four 959842, piston two 9595 cannot continue to move. Under the squeezing force of connecting plate 6, magnet one 95981 is separated from magnet two 95982, and ejection block 94 stops moving in the ejection hole. When the movable plate 92 moves to abut against the ejector pin 91, the movement of the sliding plate 92 stops, the position of the ejector block 94 is fixed, and the movable mold 8 continues to move, so that the buffer air cavity space between the ejector block 94 and the injection molded part is reduced, and the air pressure is increased, so that when the ejector block 94 pushes up the injection molded part, there is no direct contact between the two. After the injection molded part is pushed up, the injection molded part and the movable mold 8 are displaced, and the bonding strength is weakened. When the ejector block 94 directly contacts the injection molded part and completely ejects the injection molded part, the injection molded part can be prevented from being damaged due to the tight fit between the injection molded part and the movable mold 8. The elastic member 95983 can be a spring, a spring, etc.

[0098] As an embodiment of the present invention, please refer to Figures 1 to 4 , also includes:

[0099] The limiting rod 10 is connected to the connecting plate 6 , and the limiting rod 10 passes through the fixing plate 4 and is slidably connected thereto.

[0100] The limiting rod 10 is provided to ensure the lateral stable movement of the connecting plate 6 .

[0101] As an embodiment of the present invention, please refer to Figure 1 The workbench 1 is provided with a storage groove 11, which is located at the bottom of the movable mold 8 and is used to place an injection molded part storage box.

[0102] The injection molded parts storage box is placed in the storage groove 11, and the ejected injection molded parts fall into the injection molded parts storage box for collection.

[0103] The working principle of the present invention is: in the closed mold state, the magnet 1 95981 and the magnet 2 95982 are magnetically attracted together, the magnet 3 959841 and the magnet 4 959842 are in a separated state, the sliding plate 92 is in contact with the connecting plate 6, the top block 94 is in the ejection hole, and the top block 94 and the surface of the movable mold 8 are in the same horizontal plane, and the top block 94 blocks the air outlet hole;

[0104] When demoulding, the telescopic member 5 drives the connecting plate 6 to move toward the side close to the fixed plate 4, thereby driving the movable mold 8 to move synchronously, and the connecting plate 6 squeezes the sliding block 9591. Since the magnet 1 95981 and the magnet 2 95982 are magnetically adsorbed together, the sliding block 9591 moves synchronously with the connecting plate 6, and the sliding block 9591 drives the support plate 9592 to move, and the support plate 9592 drives the connecting cylinder 9593 and the connecting rod 9594 to move, and the connecting rod 9594 drives the piston 2 9595 to move, and the air inside the fixed cylinder 2 9596 is pressed into the fixed cylinder 1 9596 through the connecting pipe 3 9597. 51, so that the space pressure on the side of the fixed cylinder 951 close to the movable mold 8 increases, the piston 954 moves toward the side close to the fixed plate 4, the piston 954 drives the sliding rod 952 to move, the sliding rod 952 drives the top block 94 to move, and at the same time, the movement of the piston 954 squeezes the air inside the side of the fixed cylinder 951 close to the fixed plate 4, so that the gas enters the air bag 956 through the connecting pipe 955. Since the air outlet is blocked by the top block 94 at this time, the gas cannot flow out, so that the air bag 956 expands, and the piston 2 9595 drives the magnet 3 959841 to move;

[0105] When the top block 94 moves to expose the air outlet, the magnet three 959841 and the magnet four 959842 contact and are magnetically attracted together. At this time, the connecting plate 6 continues to move to squeeze the sliding block 9591. Since the magnet three 959841 and the magnet four 959842 contact, the piston two 9595 cannot continue to move. Under the squeezing force of the connecting plate 6, the magnet one 95981 and the magnet two 95982 are separated, and the top block 94 stops moving in the ejection hole. At this time, the gas inside the airbag 956 enters the cavity 958 through the connecting pipe two 957, and then flows out through the air outlet to the space between the top block 94 and the injection molded part to form a buffer air cavity. At this time, the connecting pipe 957 The plate 6 continues to move, the sliding block 9591 moves linearly along the connecting plate 6, and the elastic member 95983 undergoes elastic deformation. When the sliding plate 92 moves to abut against the ejector rod 91, the sliding plate 92 stops moving, the ejector block 94 is fixed, and the movable mold 8 continues to move, so that the buffer air cavity space between the ejector block 94 and the injection molded part is reduced, and the air pressure is increased, so that when the ejector block 94 pushes up the injection molded part, there is no direct contact between the two. After the injection molded part is pushed up, displacement occurs between the injection molded part and the movable mold 8, and the bonding strength is weakened. When the ejector block 94 directly contacts the injection molded part and completely ejects the injection molded part, damage to the injection molded part due to the tight fit between the injection molded part and the movable mold 8 can be avoided.

[0106] When the mold is closed, the telescopic member 5 drives the connecting plate 6 to move toward the side away from the fixed plate 4, and the connecting plate 6 drives the sliding block 9591 to move. At this time, since the magnet three 959841 and the magnet four 959842 are magnetically adsorbed together, under the reaction force of the elastic member two 95983, the sliding block 9591 moves in the opposite direction along the connecting plate 6. When the connecting plate 6 drives the magnet one 95981 to move to be magnetically adsorbed with the magnet two 95982, the connecting plate 6 continues to move and drives the piston two 9595 to move in the opposite direction through the support plate 9592. The magnet three 959841 and the magnet four 959842 are separated, and the piston two 9595 moves in the opposite direction to draw the internal gas of the fixed cylinder one 951 back to the fixed cylinder two 9596, so that the piston one 954 moves in the opposite direction, driving the top block 94 to move in the opposite direction to the position in the mold closing state. At the same time, the piston one 954 draws the outside air into the fixed cylinder one 951 through the air inlet pipe 953 for the next demolding.

[0107] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0108] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An injection molding machine for a production workshop, comprising a workbench, an injection system is arranged on the workbench, the workbench is connected to a fixed mold, the fixed mold is connected to the inside of the injection system, the fixed mold abuts against a movable mold, and a ejection hole is opened on the movable mold, characterized in that: Also includes: A fixed plate connected to the workbench; A telescopic member, one end of which is connected to the fixed plate; A connecting plate connected to the other end of the telescopic member, wherein a through hole is formed in the middle of the connecting plate; A fixed rod, one end of which is connected to the connecting plate, and the other end of which is connected to the moving die; The ejector mechanism has one end connected to the connecting plate and the other end connected to the movable mold, and is used to eject the injection molded part. The ejector mechanism includes: A push rod connected to the fixing plate and located on the same horizontal line as the through hole on the connecting plate; A sliding plate, slidably connected to the fixed rod; An elastic member 1, one end of which is connected to the sliding plate, and the other end of which is connected to the movable mold; The ejector block is located in the ejector hole of the moving die; The air cavity buffer component is connected to the top block at one end and to the fixed plate at the other end, and is used to drive the top block to move and form a buffer air cavity between the top block and the injection molded part.

2. The injection molding machine for production workshop according to claim 1, characterized in that: The air cavity buffer assembly comprises: A fixed cylinder 1 connected to the sliding plate; A sliding rod is slidably connected to the fixed cylinder and one end of the sliding rod is connected to the top block; An air inlet pipe is connected to an end of the fixed cylinder 1 close to the sliding plate, and a one-way valve 1 is provided in the air inlet pipe; Piston 1 is located inside the fixed cylinder 1 and is slidably connected to the inner wall thereof, and the piston 1 is connected to the other end of the sliding rod; A connecting tube 1, one end of which is connected to an end of a fixed tube 1 close to the sliding plate; An air bag, one end of which is connected to the other end of the connecting pipe; Connecting pipe 2, connected to the inside of the other end of the airbag; A cavity is provided inside the movable mold and is connected to the inside of the second connecting pipe. The cavity is provided with an air outlet hole connected to the ejection hole. The power component has one end connected to the fixing cylinder and the other end connected to the fixing plate, and is used to drive the sliding rod to move.

3. The injection molding machine for production workshop according to claim 2, characterized in that: The power assembly comprises: A sliding block, slidably connected to the connecting plate; A support plate, one end of which is rotatably connected to the sliding block; A connecting tube, rotatably connected to the other end of the support plate; A connecting rod, one end of which is connected to the connecting tube; Piston 2, connected to the other end of the connecting rod; A second fixed cylinder, the inner wall of which is slidably connected to the second piston, and the second fixed cylinder is connected to the fixed plate; A connecting pipe 3, one end of which is connected to the interior of the fixed cylinder 2, and the other end of which is connected to an end of the fixed cylinder 1 away from the sliding plate; The motion sequencing component has one end connected to the sliding block and the other end connected to the connecting plate, and is used to limit the motion of the sliding block.

4. The injection molding machine for production workshop according to claim 3, characterized in that: The motion sequencing component includes: Magnet 1, connected to the sliding block; Magnet 2 is connected to the connecting plate, and the magnetism of the magnet 2 is opposite to that of the magnet 1; The second elastic member has one end connected to the sliding block and the other end connected to the connecting plate; A positioning component, one end of which is connected to the second piston, and the other end of which is connected to the second fixing cylinder, is used to position the second piston.

5. The injection molding machine for production workshop according to claim 4, characterized in that: The positioning component comprises: Magnet three is connected to a side of piston two close to connecting pipe three; Magnet four is connected to the inner wall of the fixing cylinder two, and the magnet four has opposite magnetic properties to the magnet three.

6. The injection molding machine for production workshop according to claim 1, characterized in that: Also includes: The limiting rod is connected with the connecting plate, and the limiting rod passes through the fixing plate and is slidably connected with the fixing plate.

7. The injection molding machine for production workshop according to claim 1, characterized in that: The workbench is provided with a storage groove, which is located at the bottom of the movable mold and is used for placing the injection molded parts storage box.

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