A domestic plastic part injection molding machine

Abstract

This utility model relates to the field of plastic injection molding technology and discloses a household plastic parts injection molding machine, including an electric push rod. A main injection tube is provided at the top of the electric push rod, and a replacement mechanism is provided at the front of the electric push rod. The replacement mechanism is used to quickly replace the household plastic parts injection mold. An injection mechanism is provided at the bottom of the main injection tube. The injection mechanism is used to quickly adjust the injection material and conveniently add molding material. The replacement mechanism includes a rear limiting frame, the rear side of which is fixedly connected to the front side of the electric push rod. A main placement plate is fixedly connected to the bottom of the rear limiting frame, and a pushing component is provided at the front side of the rear limiting frame. In this utility model, the electric push rod at the rear of the device, together with two limiting rods, constitutes a mold pushing mechanism, eliminating the cumbersome steps of bolt disassembly and position calibration during traditional mold changing processes.

Description

Technical Field

[0001] This utility model relates to the field of plastic injection molding technology, and in particular to an injection molding machine for household plastic parts. Background Technology

[0002] The home furnishing plastic parts injection molding machine is a special molding equipment for processing plastic parts in the home furnishing field. Its core structure includes an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, and a mold installation assembly. The equipment uses thermoplastic and thermosetting plastics as raw materials. The plastic raw materials are melted into a fluid state by a heating device, and then the molten plastic is injected at high speed into the special mold cavity pre-installed in the mold clamping system by the pressure of the injection system.

[0003] In modern home furnishing manufacturing, injection molding machines for plastic parts enable standardized production of these parts. By precisely controlling injection temperature, pressure, and time parameters, they ensure high consistency in dimensional accuracy, appearance quality, and physical properties across batches, meeting the requirements for component versatility in home furnishing products. This also improves production efficiency. Compared to traditional manual molding and other processing methods, this equipment, utilizing molds with different structures, can produce complex shapes and multiple sizes of plastic parts, providing technical support for structural innovation and functional upgrades in home furnishing products.

[0004] Currently, mainstream injection molding machines for household plastic parts on the market have significant limitations in their mold fixing structure design. Their fixing structure is relatively simple, using a fixed mold mounting platform and bolt fastening to fix the mold. This design limits the mold installation position and method. When it is necessary to replace the mold to produce different specifications of household plastic parts, the operator must first use special tools to disassemble the bolts connecting the original mold to the fixed platform one by one. The entire mold replacement process involves many tedious steps. Because the fixing structure cannot adapt to the rapid positioning requirements of molds of different sizes, the operator also needs to spend a lot of time calibrating the alignment accuracy between the mold and the injection system, reducing the overall utilization rate of the equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a household plastic parts injection molding machine, which aims to improve the problem of the cumbersome process of changing injection molds in the existing technology, which affects the overall production process of plastic parts injection molding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a household plastic parts injection molding machine, including an electric push rod, a main injection tube provided at the top of the electric push rod, a replacement mechanism provided at the front side of the electric push rod, the replacement mechanism being used to quickly replace the household plastic parts injection mold, and an injection mechanism provided at the bottom of the main injection tube, the injection mechanism being used to quickly adjust the injection material and conveniently add molding material;

[0007] The replacement mechanism includes a rear limiting frame, the rear side of which is fixedly connected to the front side of the electric push rod. A main placement plate is fixedly connected to the bottom of the rear limiting frame. A pushing assembly is provided on the front side of the rear limiting frame. Two sliding limiting rods are fixedly connected to the top of the main placement plate. A mold assembly is provided on the top of each of the two sliding limiting rods. A locking assembly is provided on the left and right sides of the top of the main placement plate. A bottom connecting frame is fixedly connected to the bottom of the main placement plate. A front limiting frame is fixedly connected to the front side of the top of the main placement plate.

[0008] As a further description of the above technical solution:

[0009] The injection molding mechanism includes an upper connecting rod, the bottom of which is fixedly connected to the top of the main injection tube. A main connecting frame is fixedly connected to the front side of the upper connecting rod, and a main support frame is fixedly connected to the bottom of the main connecting frame. A lower injection tube is slidably connected to the bottom of the main injection tube. A feeding component is provided on the right side inside the main support frame, and an infeed component is provided on the bottom side inside the main support frame. A bottom support frame is fixedly connected to the bottom of the main support frame.

[0010] As a further description of the above technical solution:

[0011] The pushing assembly includes a main pushing block, the rear side of which is fixedly connected to the front side of the rear limiting frame, and a front limiting block is fixedly connected to the front side of the main pushing block.

[0012] As a further description of the above technical solution:

[0013] The mold assembly includes a lower mold block, the bottom of which is slidably connected to the top of a sliding limit rod, and an upper mold block is fixedly connected to the top of the lower mold block.

[0014] As a further description of the above technical solution:

[0015] The positioning assembly includes a side connecting frame, the bottom of which is fixedly connected to the top of the main placement plate, and a positioning rod is fixedly connected to the left side of the side connecting frame.

[0016] As a further description of the above technical solution:

[0017] The feeding assembly includes a feeding trough, the right side of which is located inside the right side of the main support frame, and a discharge port is fixedly connected to the bottom of the feeding trough.

[0018] As a further description of the above technical solution:

[0019] The feeding assembly includes a funnel-shaped feeding port, the left side of which is fixedly connected to the inside left side of the main support frame, and the bottom of which is fixedly connected to a lower injection port.

[0020] As a further description of the above technical solution:

[0021] The bottom of the electric push rod is provided with a lower support frame, and multiple item placement plates are fixedly connected to the rear side of the lower support frame.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, an electric push rod is provided on the rear side of the device, and together with two limiting rods, they form a mold pushing mechanism. When it is necessary to change injection molds of different specifications, the operator does not need to manually move the connection structure between the mold and the main body of the equipment. He only needs to start the electric push rod through the electrical control system. During the operation of the electric push rod, its push rod end can directly act on the back of the mold. At the same time, the two limiting rods can accurately guide the movement trajectory of the mold, avoid the mold from deviating during the pushing process, and ensure that the mold can be pushed out of the device smoothly and steadily along the preset path to the operating area. The entire mold pushing process does not rely on manual force and eliminates the tedious steps of bolt disassembly and position calibration in the traditional mold changing process, reducing the labor intensity of the operator and adapting to the rapid production changeover needs in the production scenarios of various types of home furnishing plastic parts.

[0024] 2. In this utility model, the top structure of the device is optimized to enable convenient replacement and rapid addition of injection molding materials. When different types of injection molding raw materials need to be replaced, the operator can directly remove the original material receiving component from the top of the equipment without disassembling the internal feeding pipe, thus avoiding the impact of raw material residue on the purity of the new material. At the same time, it simplifies the operation steps of material replacement, reduces the risk of cross-contamination of raw materials, and the design of the feeding port does not rely on special feeding equipment, adapting to the operation habits of manual feeding. Material replenishment can be completed quickly during equipment operation intervals, avoiding equipment downtime due to insufficient material supply, ensuring the continuity of the production process of household plastic parts, and further improving the overall production efficiency of the equipment. Attached Figure Description

[0025] Figure 1 This is a perspective view of a household plastic parts injection molding machine proposed in this utility model.

[0026] Figure 2This is a left view of an injection molding machine for household plastic parts proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the replacement mechanism in a household plastic parts injection molding machine proposed in this utility model.

[0028] Figure 4 This is a structural disassembly diagram of a mold assembly in a household plastic parts injection molding machine, as proposed in this utility model.

[0029] Figure 5 This is a schematic diagram of the injection molding mechanism in a household plastic parts injection molding machine proposed in this utility model.

[0030] Legend:

[0031] 1. Electric push rod; 2. Main injection tube; 3. Replacement mechanism; 31. Rear limit frame; 32. Main placement plate; 33. Pushing assembly; 331. Main push block; 332. Front limit block; 34. Sliding limit rod; 35. Mold assembly; 351. Lower mold block; 352. Upper mold block; 36. Positioning assembly; 361. Side connecting frame; 362. Positioning rod; 37. Bottom connecting frame; 38. Front limit frame; 4. Injection mechanism; 41. Upper connecting rod; 42. Main connecting frame; 43. Main support frame; 44. Lower injection tube; 45. Feeding assembly; 451. Feeding trough; 452. Discharge port; 46. Feeding assembly; 461. Funnel inlet; 462. Lower injection port; 47. Bottom support frame; 5. Lower support frame; 6. Item placement plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 3-4 An embodiment of this utility model is provided: a household plastic parts injection molding machine, including an electric push rod 1, a main injection tube 2 is provided at the top of the electric push rod 1, a replacement mechanism 3 is provided at the front side of the electric push rod 1, the replacement mechanism 3 is used to quickly replace the household plastic parts injection mold, and an injection mechanism 4 is provided at the bottom of the main injection tube 2, the injection mechanism 4 is used to quickly adjust the injection material and conveniently add molding material.

[0034] The replacement mechanism 3 includes a rear limiting frame 31, the rear side of which is fixedly connected to the front side of the electric push rod 1. The bottom of the rear limiting frame 31 is fixedly connected to a main placement plate 32. A pushing component 33 is provided on the front side of the rear limiting frame 31. Two sliding limiting rods 34 are fixedly connected to the top of the main placement plate 32. A mold component 35 is provided on the top of each of the two sliding limiting rods 34. A locking component 36 is provided on the left and right sides of the top of the main placement plate 32. A bottom connecting frame 37 is fixedly connected to the bottom of the main placement plate 32. A front limiting frame 38 is fixedly connected to the front side of the top of the main placement plate 32.

[0035] Specifically, during operation, this home furnishing plastic parts injection molding machine achieves injection molding of home furnishing plastic parts and convenient replacement of molds and materials through the coordinated action of electric push rod 1, main injection tube 2, replacement mechanism 3 and injection mechanism 4. Among them, the stroke of electric push rod 1 is set to 100mm, which can drive the mold assembly 35 to complete the reciprocating movement from the internal working position of the equipment to the external operating area along the sliding limit rod 34.

[0036] The electric push rod 1 serves as the power output component at the rear of the equipment. Its front side is fixedly connected to the rear limit frame 31 in the replacement mechanism 3. When it is necessary to replace the injection mold, the electric push rod 1 can transmit thrust to the replacement mechanism 3 through its extension and retraction. This thrust acts directly on the rear limit frame 31, thereby driving the rear limit frame 31 to move forward.

[0037] The bottom of the rear limiting frame 31 is fixedly connected to the main placement plate 32. As the rear limiting frame 31 moves forward, it will simultaneously drive the main placement plate 32 to move forward in the horizontal direction. The top of the main placement plate 32 is fixedly connected to two sliding limiting rods 34. When the main placement plate 32 moves, it will drive the two sliding limiting rods 34 to move together. The two sliding limiting rods 34 constrain the movement trajectory of the mold assembly 35, ensuring that the mold assembly 35 can only move along the extension direction of the sliding limiting rods 34, and preventing the mold assembly 35 from deviating during the movement.

[0038] The mold assembly 35 is placed on top of the main placement plate 32 and located between two sliding limit rods 34. The movement of the main placement plate 32 will directly drive the mold assembly 35 from inside the equipment to the operating area, so that the operator can replace the mold assembly 35. The top left and right sides of the main placement plate 32 are provided with locking components 36. The locking components 36 can abut against the side of the mold assembly 35 when the mold assembly 35 is in the working position, thereby fixing the mold assembly 35 in the preset position of the main placement plate 32 and preventing the mold assembly 35 from shifting during the injection molding process.

[0039] The bottom of the main placement plate 32 is fixedly connected to a bottom connecting frame 37. The bottom connecting frame 37 cooperates with the frame structure of the equipment to provide stable support for the entire replacement mechanism 3, ensuring that the replacement mechanism 3 maintains structural stability during movement and operation. A pushing component 33 is provided on the front side of the rear limit frame 31. When the electric push rod 1 drives the rear limit frame 31 to move, the pushing component 33 can assist in pushing the mold assembly 35, further ensuring that the mold assembly 35 can move smoothly from the main placement plate 32 to the designated position.

[0040] Reference Figures 4-5 The injection molding mechanism 4 includes an upper connecting rod 41, the bottom of which is fixedly connected to the top of the main injection tube 2. A main connecting frame 42 is fixedly connected to the front side of the upper connecting rod 41. A main support frame 43 is fixedly connected to the bottom of the main connecting frame 42. A lower injection tube 44 is slidably connected to the bottom of the main injection tube 2. A feeding component 45 is provided on the right side inside the main support frame 43. A feeding component 46 is provided on the bottom side inside the main support frame 43. A bottom support frame 47 is fixedly connected to the bottom of the main support frame 43.

[0041] Specifically, the bottom of the upper connecting rod 41 in the injection molding mechanism 4 is fixedly connected to the top of the main injection tube 2. The upper connecting rod 41 can form a rigid connection between the main connecting frame 42 and the main injection tube 2, so that the main connecting frame 42 can obtain stable support. The front side of the upper connecting rod 41 is fixedly connected to the main connecting frame 42. The main connecting frame 42 is kept in a fixed relative position with the main injection tube 2 by the support of the upper connecting rod 41. At the same time, the bottom of the main connecting frame 42 is fixedly connected to the main support frame 43, which can stably fix the main support frame 43 at a preset height, ensuring that the internal components of the main support frame 43 are in a reasonable working position.

[0042] The main support frame 43 provides an installation carrier for the feeding assembly 45 and the infeed assembly 46. The feeding assembly 45 on the right side inside the main support frame 43 can store the injection molding material to be added. When it is necessary to replenish the molding material to the equipment, the feeding assembly 45 can transport the molding material to the infeed assembly 46. After receiving the molding material from the feeding assembly 45, the infeed assembly 46 on the bottom side inside the main support frame 43 can guide the molding material to the main injection tube 2, thereby realizing the transportation of the molding material to the main injection tube 2.

[0043] The bottom of the main support frame 43 is fixedly connected to the bottom support frame 47. The bottom support frame 47 can enhance the bottom support strength of the main support frame 43 and prevent the main support frame 43 from shifting when bearing the weight of the feeding component 45, the feeding component 46 and the molding material. The bottom of the main injection tube 2 is slidably connected to the lower injection tube 44. The position of the lower injection tube 44 can be adjusted along the sliding trajectory of the bottom of the main injection tube 2 so that the discharge end of the lower injection tube 44 can be accurately connected with the inlet of the mold component 35, ensuring that the molding material is smoothly injected into the cavity of the mold component 35 from the main injection tube 2 through the lower injection tube 44.

[0044] When the injection molding mechanism 4 needs to change the injection molding material, the operator can operate the feeding component 45 to empty the original material in the feeding component 45 and then load the new type of material. The new material is conveyed to the feeding component 46 through the feeding component 45 and then fed into the main injection tube 2 by the feeding component 46. The material replacement can be completed without disassembling the connecting parts between the main injection tube 2 and the injection molding mechanism 4.

[0045] When the remaining molding material in the main injection tube 2 decreases, the feeding component 45 can directly feed the molding material to the feeding component 46. The feeding component 46 continuously replenishes the molding material to the main injection tube 2, ensuring that there is always a sufficient supply of molding material in the main injection tube 2. The bottom support frame 47 is fixedly connected to the bottom of the main support frame 43. It can cooperate with the equipment frame structure to further enhance the overall stability of the injection mechanism 4 and prevent the injection mechanism 4 from shifting its position due to vibration during material transportation.

[0046] The main injection tube 2 forms a stable structural connection with the main support frame 43 through the upper connecting rod 41, the main connecting frame 42, and the main support frame 43, ensuring that the relative positions of each component of the injection mechanism 4 and the main injection tube 2 are fixed. The feeding component 45 and the feeding component 46 achieve precise docking with the main injection tube 2 through the support of the main support frame 43. The lower injection tube 44 adapts to the positional changes of the mold component 35 through the sliding connection with the main injection tube 2. All components work together to achieve stable delivery and convenient replenishment of injection molding materials.

[0047] Reference Figures 1-2 The pushing component 33 includes a main pushing block 331, the rear side of which is fixedly connected to the front side of the rear limiting frame 31. A front limiting block 332 is fixedly connected to the front side of the main pushing block 331. The mold component 35 includes a lower mold block 351, the bottom of which is slidably connected to the top of the sliding limiting rod 34. An upper mold block 352 is fixedly connected to the top of the lower mold block 351. The locking component 36 includes a side connecting frame 361, the bottom of which is fixedly connected to the top of the main placement plate 32. The left side of the side connecting frame 361 is fixedly connected to the top of the main placement plate 32. The feeding assembly 45 includes a feeding trough 451, with the right side of the feeding trough 451 located inside the right side of the main support frame 43. The bottom of the feeding trough 451 is fixedly connected to a discharge port 452. The feeding assembly 46 includes a funnel inlet 461, with the left side of the funnel inlet 461 fixedly connected to the left side of the main support frame 43. The bottom of the funnel inlet 461 is fixedly connected to a lower injection port 462. The bottom of the electric push rod 1 is provided with a lower support frame 5, and the rear side of the lower support frame 5 is fixedly connected to multiple item placement plates 6.

[0048] Specifically, the rear side of the main push block 331 in the push assembly 33 is fixedly connected to the front side of the rear limit frame 31. When the rear limit frame 31 moves forward under the action of the electric push rod 1, it will drive the main push block 331 to move forward synchronously. The front side of the main push block 331 is fixedly connected to the front limit block 332. When the main push block 331 moves forward, it will drive the front limit block 332 to move together. The front limit block 332 can form an abutment with the rear side of the mold assembly 35. The thrust transmitted by the main push block 331 pushes the mold assembly 35 to move along the sliding limit rod 34, ensuring that the mold assembly 35 can smoothly disengage from the equipment after the movement of the limit frame 31. Working area; the bottom of the lower mold block 351 in the mold assembly 35 is slidably connected to the top of the sliding limit rod 34. The sliding limit rod 34 provides a guide path for the movement of the lower mold block 351, so that the lower mold block 351 can only move along the extension direction of the sliding limit rod 34; the top of the lower mold block 351 is fixedly connected to the upper mold block 352. The lower mold block 351 and the upper mold block 352 together form an injection cavity. After the molding material is injected into the cavity, it can form a pre-shaped household plastic part. When the lower mold block 351 moves, it will drive the upper mold block 352 to move synchronously, ensuring the structural stability of the mold assembly 35 during the overall movement.

[0049] The bottom of the side connecting frame 361 in the positioning assembly 36 is fixedly connected to the top of the main placement plate 32, and the main placement plate 32 provides stable support for the side connecting frame 361; the left side of the side connecting frame 361 is fixedly connected to the positioning rod 362. When the mold assembly 35 moves to the working position, the positioning rod 362 can abut against the right side of the lower mold block 351, restricting the horizontal displacement of the lower mold block 351 and ensuring that the mold assembly 35 remains in a fixed position during the injection molding process;

[0050] The feeding trough 451 in the feeding assembly 45 is located on the right side inside the main support frame 43, which provides installation space and support for the feeding trough 451. The bottom of the feeding trough 451 is fixedly connected to the discharge port 452. The injection molding material stored in the feeding trough 451 can be conveyed downward through the discharge port 452 by its own gravity, realizing the transfer of the molding material to the feeding assembly 46. The left side of the funnel inlet 461 in the feeding assembly 46 is fixedly connected to the left side inside the main support frame 43, which provides a stable installation base for the funnel inlet 461. The funnel inlet 461 can receive the molding material from the discharge port 452 of the feeding trough 451, and its funnel-shaped structure can guide the molding material to flow downward in a concentrated manner. The bottom of the funnel inlet 461 is fixedly connected to the lower injection port 462. The concentrated molding material can be conveyed to the main injection tube 2 through the lower injection port 462, completing the precise replenishment of the molding material to the main injection tube 2.

[0051] The electric push rod 1 is equipped with a lower support frame 5 at its bottom. The lower support frame 5 can provide bottom support for the electric push rod 1, enhance the stability of the electric push rod 1 during operation, and prevent the electric push rod 1 from shifting its position due to its own weight and vibration. Multiple item placement plates 6 are fixedly connected to the rear side of the lower support frame 5. The item placement plates 6 can be used to store tools, spare parts, and injection molding materials needed in the injection molding process, so that operators can quickly access them when needed and reduce production interruptions caused by searching for items.

[0052] When it is necessary to replace the mold assembly 35, the electric push rod 1 drives the rear limit frame 31 to move forward. The rear limit frame 31 drives the main push block 331 and the front limit block 332 to move forward. The front limit block 332 abuts against the rear side of the lower mold block 351 and pushes it forward along the sliding limit rod 34 until the mold assembly 35 moves to the operating area. After the operator replaces the mold assembly 35 with a new one, the electric push rod 1 drives the rear limit frame 31 to move backward. The main push block 331 and the front limit block 332 then move backward, driving the new mold assembly 35 to move backward along the sliding limit rod 34. When the mold assembly 35 reaches the working position, the locking rod 362 abuts against the right side of the lower mold block 351, fixing the mold assembly 35 in the preset position.

[0053] Working principle: When it is necessary to change the mold assembly 35 of different specifications to produce corresponding household plastic parts, the electric push rod 1 is activated. The electric push rod 1 outputs power to drive the rear limit frame 31 fixed at the rear to move forward. The rear limit frame 31 simultaneously drives the main placement plate 32 fixed at the bottom and the pushing assembly 33 set at the front to move. When the main placement plate 32 moves, the two sliding limit rods 34 fixed at the top move together with it. The main push block 331 in the pushing assembly 33 and the front limit block 332 abut against the rear side of the lower mold block 351 of the mold assembly 35, pushing the lower mold block 351 along the top of the sliding limit rod 34. The electric push rod 1 moves backward until the mold assembly 35 moves to the operating area. After the new mold assembly 35 is replaced, the electric push rod 1 moves in the reverse direction, driving the rear limit frame 31, the main placement plate 32 and the push assembly 33 to move backward. The new mold assembly 35 is reset along the sliding limit rod 34. When it reaches the working position, in the locking assembly 36 on the left and right sides of the top of the main placement plate 32, the locking rod 362 on the left side of the side connecting frame 361 abuts against the right side of the lower mold block 351 to limit its displacement. At the same time, the front limit frame 38 on the front side of the top of the main placement plate 32 prevents the mold assembly 35 from shifting forward, and the bottom connecting frame 37 enhances the support stability of the main placement plate 32.

[0054] The electric push rod 1 drives the rear limit frame 31, the main placement plate 32 and the push component 33 to move in tandem. With the guidance of the sliding limit rod 34 and the fixing effect of the locking component 36 and the front limit frame 38, the mold component 35 can be moved smoothly and positioned accurately. No manual handling is required, which greatly simplifies the mold changing operation steps.

[0055] When replenishing injection molding material, the operator adds injection molding material to the feeding trough 451 of the feeding component 45 of the injection molding mechanism 4. The feeding trough 451 is stably supported by the main support frame 43 on the right side. Under the action of gravity, the molding material in the trough flows into the funnel inlet 461 of the feeding component 46 through the bottom-fixed outlet 452. The funnel inlet 461 is kept in a stable position by the fixed connection with the main support frame 43 on the left side. Its funnel-shaped structure guides the molding material to flow to the bottom-fixed lower injection port 462. The lower injection port 462 delivers the molding material to the main injection pipe 2. When it is necessary to change the injection molding material, after emptying the original material in the feeding trough 451, the new type of molding material is directly poured into the feeding trough 451. The new material follows the same path through the outlet 452, the funnel inlet 461, and the lower injection port 462. 62 enters the main injection tube 2; during this process, the upper connecting rod 41 is fixedly connected to the main injection tube 2 at the bottom, and the main connecting frame 42 fixed at the front is rigidly connected to the main injection tube 2. The main support frame 43 fixed at the bottom of the main connecting frame 42 provides a stable installation base for the feeding component 45 and the feeding component 46. The bottom support frame 47 fixed at the bottom of the main support frame 43 further enhances the overall support strength and avoids component displacement during material handling. This process achieves the technical effect of convenient replacement of injection molding materials and rapid addition of molding material. Material replacement does not require complicated disassembly operations, reducing the risk of cross-contamination of raw materials. The rapid addition process avoids equipment downtime due to insufficient material supply, ensuring the continuity of household plastic parts production. At the same time, the stable support structure ensures accurate material conveying path and reduces raw material spillage and waste.

[0056] After mold installation and material replenishment are completed, the equipment is started to enter the injection molding stage. The molding material in the main injection tube 2 flows downward under the drive of the equipment. The lower injection tube 44, which is slidably connected to the bottom of the main injection tube 2, slides and adjusts along the bottom of the main injection tube 2 according to the position of the mold assembly 35, so that the discharge end of the lower injection tube 44 is precisely aligned with the injection cavity formed by the upper mold block 352 and the lower mold block 351 in the mold assembly 35. After the molding material is injected into the cavity through the lower injection tube 44, the equipment remains in the mold-closed state until the molding material inside the cavity cools and solidifies. During this process, the lower support frame 5 set at the bottom of the electric push rod 1 provides bottom support for the electric push rod 1, preventing the electric push rod 1 from shifting due to equipment vibration and ensuring the stability of the mold assembly 35. The bottom connecting frame 37 enhances the connection stability between the main placement plate 32 and the equipment frame, further ensuring that the mold assembly 35 does not shift during the injection process and ensuring that the molding material is evenly distributed inside the cavity.

[0057] During the overall operation of the equipment, when a mold needs to be changed, the injection molding operation is first paused, and the electric push rod 1 and replacement mechanism 3 are operated according to the mold change procedure to complete the mold change. After the mold change, if the injection molding material needs to be adjusted, it is changed according to the material handling procedure. After the material is ready, the injection molding process is started to produce household plastic parts. During this process, the replacement mechanism 3 and the injection molding mechanism 4 are linked through the equipment control system. After the mold change is completed, the lower injection pipe 44 automatically adjusts its position to connect with the new mold cavity. After the material is changed, the main injection pipe 2 automatically receives the new material and enters the injection state. At the same time, the operating status of the electric push rod 1, the amount of injection molding material delivered, and the injection temperature parameters are coordinated and controlled by the equipment control system to ensure that each link is connected in an orderly manner.

[0058] By coordinating the replacement mechanism 3, injection mechanism 4, electric push rod 1, and main injection tube 2, and coordinating the parameter adjustment of the equipment control system, seamless connection of mold replacement, material processing, and injection molding is achieved.

[0059] This process achieves the technical effect of high overall equipment efficiency. The coordinated operation of each link reduces production waiting time, improves the overall utilization rate of equipment, adapts to the production needs of multiple varieties and batches of home furnishing plastic parts, and ensures stable product quality by precise parameter control, reducing the defect rate in the production process and providing reliable technical support for the large-scale production of home furnishing plastic parts.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A household plastic parts injection molding machine, comprising an electric push rod (1), characterized in that: The electric push rod (1) is provided with a main injection tube (2) at the top, and a replacement mechanism (3) is provided on the front side of the electric push rod (1). The replacement mechanism (3) is used to quickly replace the injection mold of the plastic parts for home furnishings. The main injection tube (2) is provided with an injection mechanism (4) at the bottom. The injection mechanism (4) is used to quickly adjust the injection material and conveniently add molding material. The replacement mechanism (3) includes a rear limiting frame (31), the rear side of which is fixedly connected to the front side of the electric push rod (1). The bottom of the rear limiting frame (31) is fixedly connected to a main placement plate (32). A pushing component (33) is provided on the front side of the rear limiting frame (31). Two sliding limiting rods (34) are fixedly connected to the top of the main placement plate (32). A mold component (35) is provided on the top of each of the two sliding limiting rods (34). A locking component (36) is provided on the left and right sides of the top of the main placement plate (32). A bottom connecting frame (37) is fixedly connected to the bottom of the main placement plate (32). A front limiting frame (38) is fixedly connected to the front side of the top of the main placement plate (32).

2. The injection molding machine for household plastic parts according to claim 1, characterized in that: The injection molding mechanism (4) includes an upper connecting rod (41), the bottom of which is fixedly connected to the top of the main injection tube (2), a main connecting frame (42) is fixedly connected to the front side of the upper connecting rod (41), a main support frame (43) is fixedly connected to the bottom of the main connecting frame (42), a lower injection tube (44) is slidably connected to the bottom of the main injection tube (2), a feeding component (45) is provided on the right side inside the main support frame (43), a feeding component (46) is provided on the bottom side inside the main support frame (43), and a bottom support frame (47) is fixedly connected to the bottom of the main support frame (43).

3. The injection molding machine for household plastic parts according to claim 1, characterized in that: The pushing component (33) includes a main pushing block (331), the rear side of which is fixedly connected to the front side of the rear limiting frame (31), and the front side of the main pushing block (331) is fixedly connected to a front limiting block (332).

4. The injection molding machine for household plastic parts according to claim 1, characterized in that: The mold assembly (35) includes a lower mold block (351), the bottom of which is slidably connected to the top of the sliding limit rod (34), and the top of which is fixedly connected to an upper mold block (352).

5. The injection molding machine for household plastic parts according to claim 1, characterized in that: The positioning assembly (36) includes a side connecting frame (361), the bottom of which is fixedly connected to the top of the main placement plate (32), and a positioning rod (362) is fixedly connected to the left side of the side connecting frame (361).

6. The injection molding machine for household plastic parts according to claim 2, characterized in that: The feeding assembly (45) includes a feeding trough (451), the right side of which is located inside the main support frame (43), and the bottom of the feeding trough (451) is fixedly connected to a discharge port (452).

7. The injection molding machine for household plastic parts according to claim 2, characterized in that: The feeding assembly (46) includes a funnel inlet (461), the left side of which is fixedly connected to the inside left side of the main support frame (43), and the bottom of which is fixedly connected to a lower injection port (462).

8. The injection molding machine for household plastic parts according to claim 1, characterized in that: The electric push rod (1) is provided with a lower support frame (5) at its bottom, and a number of item placement plates (6) are fixedly connected to the rear side of the lower support frame (5).

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