Heat energy recovery mechanism of injection molding machine

Abstract

The utility model provides a heat energy recovery mechanism of an injection molding machine, and relates to the field of injection molding machine mechanisms, the heat energy recovery mechanism of the injection molding machine comprises a delivery pipe, the front end and the rear end of the delivery pipe are both sleeved with fixing rings, a plurality of cross rods are connected between the two fixing rings, and the cross rods are annularly distributed around the delivery pipe at equal angles; a rod body of each fixing ring is in sliding fit with a heating and heat preservation module. According to the heat energy recovery mechanism of the injection molding machine, the conveying pipe is arranged, the heating and heat preservation module surrounds the outer ring of the conveying pipe, the heating and heat preservation module is provided with the temperature guide block and the temperature guide rod, the heating and heat preservation module conducts heat preservation on the front end of the conveying pipe, the heat preservation effect is achieved, and excessive temperature reduction of the conveying pipe is avoided. An embedding groove is formed in the front end of the conveying pipe, the temperature guide block makes contact with the conveying pipe, and the temperature guide rod is inserted into the embedding groove formed in the conveying pipe, so that the purpose of heating the front end of the conveying pipe through recycled heat energy is achieved, the heat energy recycling effect is achieved, and the situation that the fluidity of raw materials is affected due to the large temperature difference between the two ends of the conveying pipe is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine mechanisms, specifically to a heat recovery mechanism for an injection molding machine. Background Technology

[0002] Gears are toothed mechanical parts that mesh with each other. Car window regulators require specialized window gears, which are manufactured using injection molding machines.

[0003] Existing injection molding machines inject thermoplastics into a mold. The raw material is fed into a nozzle through a conveying pipe and then injected into the mold. During operation, some heat is directly dissipated into the air, and the raw material gradually cools down along the conveying pipe, causing a temperature difference between the two ends of the pipe, which can easily affect the flowability of the raw material. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a heat recovery mechanism for injection molding machines, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a heat recovery mechanism for an injection molding machine, comprising a conveying pipe, with fixed rings fitted at both ends of the conveying pipe, and multiple crossbars connecting the two fixed rings. The multiple crossbars are distributed in a ring at equal angles around the conveying pipe, and each fixed ring has a heating and heat preservation module slidably fitted on its body. The inner side of the heating and heat preservation module is in close contact with the surface of the conveying pipe. The heating and heat preservation module is symmetrically provided with two temperature-conducting blocks, and a temperature-conducting rod is inserted into the center of each temperature-conducting block. One end of each temperature-conducting block and temperature-conducting rod can contact the fixed ring.

[0008] The front end of the delivery pipe has multiple embedded slots. When the heating and heat preservation module moves forward to its limit, the temperature guide rod is aligned with the embedded slot and can be inserted into the embedded slot.

[0009] The heating and heat preservation module is equipped with a main gear and a secondary gear on its top. The main gear is driven by a motor. The end of the temperature guide rod away from the fixed ring is connected to a support rod. The top of the support rod is bent and has a through groove. The main gear and the secondary gear mesh. A lever is connected to the side of the secondary gear and passes through the through groove.

[0010] Preferably, a heat-conducting sheet is placed on the side of the heating and heat-preserving module that contacts the fixing ring. The heating and heat-preserving module has a through-hole, and the heat-conducting block is located in the hole. A sliding groove is formed at equal angles on the inner side of the heating and heat-preserving module. A temperature sensing unit is connected at equal angles on the inner side of the heating and heat-preserving module. A groove is formed on the outer side of the heat-conducting block. The temperature sensing unit contacts the inner wall of the groove. A sliding plate is connected to the outer side of the heat-conducting block, and the sliding plate slides in conjunction with the sliding groove.

[0011] Preferably, the included angle between two adjacent mounting holes is 90°, the slide groove is located between two adjacent mounting holes, and the bottom of the heating and heat preservation module is connected to a drive slide block, which slides in cooperation with the crossbar.

[0012] Preferably, the outer side of the conveying pipe is fitted with a heat-insulating sleeve, and a fixing block is connected to the inner side of the end of the heat-insulating sleeve. The fixing block is connected to a fixing ring, and the heat-insulating sleeve covers multiple crossbars.

[0013] (III) Beneficial Effects

[0014] This utility model provides a heat recovery mechanism for an injection molding machine. It has the following beneficial effects:

[0015] 1. The heat recovery mechanism of this injection molding machine includes a conveying pipe surrounded by a heating and insulation module. This module contains a temperature-conducting block and a temperature-conducting rod. The module insulates the front end of the conveying pipe, preventing excessive temperature drop. An embedding groove is provided at the front end of the conveying pipe, where the temperature-conducting block contacts the pipe, and the temperature-conducting rod is inserted into the groove. This achieves the purpose of heating the front end of the conveying pipe with the recovered heat energy, thus recovering heat and preventing large temperature differences between the two ends of the conveying pipe, which could affect the flowability of the raw materials. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0017] Figure 2 This is an enlarged view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the thermal insulation module structure of this utility model;

[0019] Figure 4 This is an exploded view of a partial structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the heat insulation sleeve structure of this utility model.

[0021] In the diagram: 1. Conveying pipe, 11. Embedded groove, 12. Heat insulation sleeve, 121. Fixing clamp, 2. Fixing ring, 21. Crossbar, 3. Heating and heat preservation module, 31. Mounting hole, 32. Slide groove, 33. Temperature sensing unit, 34. Drive slide, 4. Temperature guiding block, 41. Slide plate, 42. Groove, 5. Temperature guiding rod, 51. Support rod, 52. Through groove, 6. Main gear, 7. Secondary gear, 71. Lever. Detailed Implementation

[0022] This utility model embodiment provides a heat recovery mechanism for an injection molding machine, such as... Figure 1-5 As shown, the device includes a conveying pipe 1. The rear end of the conveying pipe 1 is connected to the heating raw material device, and the front end of the conveying pipe 1 is connected to the nozzle. Therefore, the temperature at the rear end of the conveying pipe 1 is higher than that at the front end. Both the front and rear ends of the conveying pipe 1 are fixedly installed with fixing rings 2. Multiple crossbars 21 are welded between the two fixing rings 2. The multiple crossbars 21 are distributed in a ring at equal angles around the conveying pipe 1.

[0023] Each fixed ring 2 has a heating and heat preservation module 3 that slides together. The inner side of the heating and heat preservation module 3 is in close contact with the surface of the conveying pipe 1. The heating and heat preservation module 3 is symmetrically provided with two temperature guiding blocks 4. A temperature guiding rod 5 is inserted into the center of the temperature guiding block 4. One end of the temperature guiding block 4 and the temperature guiding rod 5 can contact the fixed ring 2.

[0024] The front end of the conveying pipe 1 has multiple embedding slots 11. When the heating and insulation module 3 moves forward to its limit, the heat-conducting rod 5 is aligned with the embedding slot 11, and the heat-conducting rod 5 can be inserted into the embedding slot 11. Inserting the heat-conducting rod 5 into the embedding slot 11 increases the contact area between the heat-conducting rod 5 and the conveying pipe 1, thereby improving the heat conduction effect.

[0025] The heating and heat preservation module 3 is equipped with a heating component inside, which keeps the heating and heat preservation module 3 at a certain temperature. The heating and heat preservation module 3 is moved to the front end of the conveying pipe 1. When the temperature of the temperature conducting block 4 and the heat conducting rod 5 drops, the heating and heat preservation module 3 assists in ensuring that the temperature at the front end of the conveying pipe 1 does not drop too low.

[0026] The heating and heat preservation module 3 is pivotally connected to the top of the main gear 6 and the auxiliary gear 7. The main gear 6 is driven by a motor. The end of the temperature guide rod 5 away from the fixed ring 2 is welded with a support rod 51. The top of the support rod 51 is bent and has a through groove 52. The main gear 6 and the auxiliary gear 7 mesh. The side of the auxiliary gear 7 is connected to a lever 71, which passes through the through groove 52.

[0027] A heat-conducting plate is fixedly installed on the side of the heating and insulation module 3 that contacts the fixing ring 2, thereby transferring the temperature to the delivery pipe 1. Since the heating and insulation module 3 is a conventional technology, its internal structure and connection method will not be described in detail.

[0028] The heating and heat preservation module 3 has a through mounting hole 31, the temperature conducting block 4 is located in the mounting hole 31, the heating and heat preservation module 3 has a sliding groove 32 at equal angles on the inner side, and the heating and heat preservation module 3 has a temperature sensing unit 33 fixedly installed at equal angles on the inner side.

[0029] During operation, when the temperature-conducting block 4 absorbs the heat released by the conveying pipe 1, the temperature sensing unit 33 is used to sense the temperature of the temperature-conducting block 4. When the temperature of the temperature-conducting block 4 rises above the preset value, the heating and heat preservation module 3 slides to the front end of the temperature-conducting block 4.

[0030] The aforementioned temperature-conducting block 4 and temperature-conducting rod 5 are made of the same temperature-conducting material.

[0031] A groove 41 is provided on the outer side of the temperature-conducting block 4. The working end of the temperature sensing unit 33 is in contact with the inner wall of the groove 41. A sliding plate 42 is welded on the outer side of the temperature-conducting block 4. The sliding plate 42 slides in conjunction with the sliding groove 32.

[0032] The included angle between two adjacent mounting holes 31 is 90°. The sliding groove 32 is located between the two adjacent mounting holes 31. A drive slide 34 is fixedly installed at the bottom of the heating and insulation module 3, and the drive slide 34 is slidably engaged with the crossbar 21. The drive slide 34 drives the heating and insulation module 3 to move along the crossbar 21. The drive slide 34 is a conventional technical means.

[0033] A heat-insulating sleeve 12 is fitted around the outside of the conveying pipe 1. A fixing block 121 is fixedly installed on the inner side of the end of the heat-insulating sleeve 12. The fixing block 121 is connected to the fixing ring 2. The heat-insulating sleeve covers multiple crossbars 21. This reduces heat loss.

[0034] Working principle: The heat-conducting block 4 and the heat-conducting rod 5 contact the conveying pipe 1 to absorb the heat released from the conveying pipe 1 to the outside. When the absorbed heat reaches the preset value, the heating and heat preservation module 3 moves forward. At the same time, the gear rotates and drives the lever 71, which drives the heat-conducting rod 5 to move inward, so that the heat-conducting rod 5 is inserted into the embedding groove 11.

[0035] In summary, the heat recovery mechanism of this injection molding machine includes a conveying pipe 1, surrounded by a heating and insulation module 3. The heating and insulation module 3 is equipped with a temperature-conducting block 4 and a temperature-conducting rod 5. The heating and insulation module 3 insulates the front end of the conveying pipe 1, preventing excessive temperature drop. An embedding groove 11 is provided at the front end of the conveying pipe 1. The temperature-conducting block 4 contacts the conveying pipe 1, and the temperature-conducting rod 5 is inserted into the embedding groove 11, achieving the purpose of heating the front end of the conveying pipe 1 with the recovered heat energy. This heat recovery function prevents large temperature differences between the two ends of the conveying pipe 1, which could affect the flowability of the raw materials.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat recovery mechanism for an injection molding machine, characterized in that: The system includes a conveying pipe (1), with fixed rings (2) fitted at both ends of the conveying pipe (1). Multiple crossbars (21) are connected between the two fixed rings (2). The multiple crossbars (21) are distributed in a ring at equal angles around the conveying pipe (1). Each fixed ring (2) has a heating and heat preservation module (3) slidably fitted on its body. The inner side of the heating and heat preservation module (3) is in close contact with the surface of the conveying pipe (1). The heating and heat preservation module (3) is symmetrically provided with two temperature-conducting blocks (4). A temperature-conducting rod (5) is inserted into the center of the temperature-conducting block (4). One end of the temperature-conducting block (4) and the temperature-conducting rod (5) can contact the fixed ring (2). The front end of the delivery pipe (1) is provided with multiple embedded slots (11). When the heating and heat preservation module (3) moves forward to the limit, the temperature guide rod (5) is aligned with the embedded slot (11) and the temperature guide rod (5) can be inserted into the embedded slot (11). The heating and heat preservation module (3) is equipped with a main gear (6) and a secondary gear (7) on its top. The main gear (6) is driven by a motor. The end of the temperature guide rod (5) away from the fixed ring (2) is connected to a support rod (51). The top of the support rod (51) is bent and has a through groove (52). The main gear (6) meshes with the secondary gear (7). The side of the secondary gear (7) is connected to a lever (71), which passes through the through groove (52).

2. The heat recovery mechanism for an injection molding machine according to claim 1, characterized in that: A heat-conducting sheet is placed on the side of the heating and heat-preserving module (3) that contacts the fixing ring (2). The heating and heat-preserving module (3) has a through mounting hole (31). The heat-conducting block (4) is located in the mounting hole (31). A sliding groove (32) is opened at equal angles on the inner side of the heating and heat-preserving module (3). A temperature sensing unit (33) is connected at equal angles on the inner side of the heating and heat-preserving module (3). A groove (41) is opened on the outer side of the heat-conducting block (4). The temperature sensing unit (33) is in contact with the inner wall of the groove (41). A sliding piece (42) is connected on the outer side of the heat-conducting block (4). The sliding piece (42) and the sliding groove (32) slide together.

3. The heat recovery mechanism for an injection molding machine according to claim 2, characterized in that: The included angle between the two adjacent mounting holes (31) is 90°, the slide groove (32) is located between the two adjacent mounting holes (31), and the bottom of the heating and heat preservation module (3) is connected to the drive slide (34), which is in sliding cooperation with the crossbar (21).

4. The heat recovery mechanism for an injection molding machine according to claim 3, characterized in that: The outer side of the conveying pipe (1) is fitted with a heat insulation sleeve (12), and a fixing block (121) is connected to the inner side of the end of the heat insulation sleeve (12). The fixing block (121) is connected to the fixing ring (2), and the heat insulation sleeve covers multiple crossbars (21).

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