Electric hoist box body, mold and machining process of electric hoist box body

Abstract

The invention discloses an electric hoist box body, a die and a machining process thereof, and relates to the technical field of die-casting dies. The device comprises a shell, two partition plates are arranged in the middle of the shell, a middle cavity with an opening facing the outer side is formed between the two partition plates, and a shallow inlet cavity and a deep inlet cavity are formed between the two opposite sides of the partition plates and the shell respectively; and the rotating shaft mounting part comprises a square cavity and a round cavity which are constructed in the deep cavity, a first shaft pipe which protrudes outwards is constructed in the square cavity, and a plurality of second shaft pipes which are consistent with the protruding direction of the first shaft pipe are constructed in the round cavity. The lugs are arranged on the side faces of the box body of the electric hoist, the side faces of the box body of the electric hoist are arranged on the upper side and the lower side of the die during die casting, bubbles can float upwards during material injection and filling, accordingly, the bubbles are gathered at the lugs, waste materials at the lugs are cut off through operations such as finish machining and deburring after follow-up cooling forming, and the production efficiency is improved. Therefore, the whole product has no or few pores and bubbles.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting molds, and in particular to an electric hoist box, a mold and a processing technology thereof. Background Art

[0002] Electric hoists are a common type of lifting equipment in industrial production, and the manufacturing quality of their housings directly impacts the performance and service life of the equipment. Traditional manufacturing techniques often result in insufficient structural strength, low processing efficiency, and significant material waste, leading to the use of die-casting for these housings.

[0003] Existing die-casting molds mostly adopt a vertical molding structure. When the electric hoist is formed in the mold, bubbles will form in the side wall of its top, affecting the overall strength of the product. Such electric hoists pose a safety hazard when lifting. In addition, existing die-casting molds are prone to incomplete filling at their edge corners when injecting materials. Existing molds cannot avoid this problem, and a large number of defective products will be produced during production and processing.

[0004] In order to improve product production quality, the present invention proposes an electric hoist box, a mold and a processing technology thereof. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the above-mentioned background technology, and to provide an electric hoist box, a mold and a processing technology thereof.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: Electric hoist box, including: A housing, wherein two partition plates are constructed in the middle of the housing, an intermediate cavity with an opening facing outward is constructed between the two partition plates, and a shallow cavity and a deep cavity are respectively constructed between two opposite sides of the partition plates and the housing; The rotating shaft mounting portion includes a square cavity and a circular cavity constructed in the deep cavity. The square cavity is configured with a shaft tube 1 protruding outward. The circular cavity is configured with multiple shaft tubes 2 protruding in the same direction as the shaft tube 1. The shallow cavity is configured with a shaft tube 3 coaxially arranged with the shaft tubes 1 and 2 and protruding in the opposite direction. Reinforcement ribs are provided in the shallow cavity, the square cavity and the round cavity; Lugs are protruding structures on the sides of the housing.

[0007] Furthermore, the reinforcing ribs in the circular cavity are all in the form of triangular inclined plate structures, and the reinforcing ribs in the shallow cavity are all in the form of square plate structures.

[0008] Furthermore, a side opening is constructed on one side of the square cavity in the same direction as the opening of the middle cavity, the reinforcing rib between the shaft tube 1 and the side opening is in the shape of a straight plate, the reinforcing rib between the shaft tube 1 and the other side of the square cavity is in the shape of a triangular inclined plate, and some of the lugs are constructed on the side of the shell and are located at the edge of the side opening and the middle cavity.

[0009] The electric hoist box mold is used to process the above-mentioned electric hoist box, including: A mold base, wherein a mounting groove is configured in the middle of the mold base, a bottom mold is connected in the mounting groove, and an inner mold plug-in block protruding upward is installed on the bottom mold; A left mold and a right mold, wherein a transverse groove penetrating the upper side of the bottom mold is constructed in the mold base, and the left mold and the right mold are slidably mounted in the transverse groove, and a driving member is mounted on the mold base at both ends of the transverse groove and used to push the left mold and the right mold to move toward the bottom mold; The mold cover is buckled on the upper side of the mold base. The mold cover is configured with a connecting groove arranged above and below the mounting groove. The top mold is detachably mounted in the connecting groove. A horizontal molding cavity is formed between the top mold, the bottom mold, the left mold, the right mold, and the inner mold insert. A pressing piece is connected to the die cover, and an end of the pressing piece is inserted into the die base and communicated with the bottom die; The overflow part includes a residual material receiving block installed on the mold base and the mold cover and arranged opposite to the pressing piece, and the bottom mold is configured with an overflow groove connected to the residual material receiving block and the molding cavity; The corner suction piece is arranged on the mold base and is connected to the overflow groove, and is used to suck the residual material at the edge of the molding cavity.

[0010] Furthermore, the pressing piece includes a feeding column inserted at one end of the bottom mold, an L-shaped pressing hole is constructed in the feeding column, and a feeding trough connected to the L-shaped pressing hole is constructed on the bottom mold.

[0011] Furthermore, the feed trough is fan-shaped and has a plurality of feed holes connected to the forming cavity at the wide end, an inverted V-shaped buffer cavity connected to the feed holes is constructed on the top mold, and a U-shaped filling trough is constructed on the side of the feed trough, which is located on one side of the forming cavity and connected to it.

[0012] Furthermore, the overflow trough includes a plurality of straight discharge troughs and two U-shaped discharge troughs. The straight discharge troughs are constructed on the bottom mold and are connected to the molding cavity and the residual material receiving block. The U-shaped discharge troughs are constructed between the bottom mold and the top mold and are located on both sides of the molding cavity. One of the U-shaped discharge troughs is arranged opposite to the U-shaped filling trough. Buffer pressure troughs connected to the molding cavity are constructed at both ends of the U-shaped filling trough, the middle of the straight discharge trough, and both sides of the U-shaped discharge trough.

[0013] Furthermore, the corner suction piece includes a suction pipe installed on the mold base, one end of the suction pipe is connected to the middle of the U-shaped discharge chute and the other end is inserted with a pulling rod.

[0014] Furthermore, a plurality of ejector pins inserted into the feed trough, the molding cavity and the buffer pressure groove are installed through the bottom mold, and the ejector pins located in the molding cavity abut against the end surface of the opening of the middle cavity of the shell.

[0015] The electric hoist box processing technology uses the above-mentioned electric hoist box mold, including: S1: The hydraulic press drives the entire die cover to move downward through the guide column until it engages with the die base. The lower surface of the top die contacts and connects with the upper surface of the bottom die. The inner die insert is inserted into the top die. The left and right dies are pushed into the space between the bottom and top dies by the driving member to form a molding cavity. The feed column is inserted into the bottom die. The L-shaped pressing hole, feed trough, and feed trough are connected to the molding cavity. S2: Inject an appropriate amount of die-casting raw materials into the feed column, and use external force to quickly press the die-casting raw materials into the molding cavity through the feed trough and the U-shaped filling trough; S3: The die-casting raw materials overflow from the straight discharge chute and the U-shaped discharge chute in sequence. The raw materials in the straight discharge chute enter the residual material receiving block, and the raw materials in the U-shaped discharge chute stay in the inverted V-shaped buffer cavity; S4: The cylinder drives the pull rod to move, forming a negative pressure in the suction pipe, guiding the die-casting raw materials into the suction pipe, so that the die-casting raw materials fill the U-shaped discharge trough; S5: When opening the mold, the mold cover is lifted up first, and then the left and right molds are withdrawn from the range of the bottom mold at the same time, cutting off the material in the suction tube, and ejecting the product through the ejector pin. At the same time, the pull rod is pulled out to eject the remaining material in the suction tube.

[0016] The beneficial effects of the present invention are as follows: The present invention provides lugs on the sides of the electric hoist case, and arranges the sides on the upper and lower sides of the mold during die-casting, so that bubbles can float upward during filling, thereby gathering the bubbles at the lugs. After subsequent cooling and molding, the waste material at the lugs is removed through fine processing and burring, thereby achieving the purpose of having no or few pores and bubbles in the entire product. At the same time, the lugs can also be used as an additional expansion of the injection margin, thereby avoiding lack of injection material on the side walls of the electric hoist case and ensuring product processing quality.

[0017] The present invention transforms the traditional vertical mold into a horizontal mold by arranging a mold base and a mold cover, uses the left mold and the right mold to position the shallow cavity and the deep cavity of the electric hoist box, and places the side walls within the top mold and the bottom mold, so that the bubbles are gathered in the lugs on the side walls, reducing the amount of bubbles in the product body. At the same time, the corner suction piece is arranged at the corner edge of the molding cavity, and negative pressure suction can be used to guide the die-casting raw materials into this area, thereby ensuring the filling accuracy of the injection material and improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the electric hoist box of the present invention; Figure 2 This invention Figure 1 Another perspective three-dimensional structure diagram; Figure 3 This invention Figure 1 Another perspective of the three-dimensional structure diagram; Figure 4 This is a three-dimensional structural diagram of the electric hoist box mold of the present invention; Figure 5 This invention Figure 4 Half-section view of the three-dimensional structure in the middle mold closing state; Figure 6 This invention Figure 4 Partial three-dimensional structure diagram; Figure 7 This is a three-dimensional structural diagram of the bottom mold and top mold of the present invention; Figure 8 This is a three-dimensional structural diagram of the bottom mold of the present invention; Figure 9 It is a three-dimensional structural diagram of the top mold of the present invention.

[0019] Figure numerals: 1, housing; 101, partition plate; 102, middle cavity; 103, shallow cavity; 104, deep cavity; 2, shaft mounting portion; 201, square cavity; 2011, side opening; 202, round cavity; 203, shaft tube 1; 204, shaft tube 2; 205, shaft tube 3; 3, reinforcing rib; 4, lug; 5, mold base; 501, mounting groove; 502, transverse groove; 6, bottom mold; 7, inner mold insert; 8, left mold; 9, right mold; 10, driving member; 11, mold cover; 1101, connecting groove ; 12. Top mold; 13. Pressing piece; 1301. Feed column; 1302. L-shaped pressing hole; 1303. Feed trough; 1304. Feed hole; 1305. Inverted V-shaped buffer chamber; 1306. U-shaped filling trough; 14. Overflow piece; 1401. Residual material receiving block; 1402. Overflow trough; 14021. Flat discharge trough; 14022. U-shaped discharge trough; 14023. Buffer pressure trough; 15. Corner suction piece; 1501. Suction tube; 1502. Pull rod; 16. Ejector pin. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] like Figure 1-Figure 3 As shown, an electric hoist box provided in one embodiment of the present invention includes: The housing 1 has two partition plates 101 in the middle thereof, an intermediate cavity 102 with an opening toward the outside is formed between the two partition plates 101, and a shallow cavity 103 and a deep cavity 104 are respectively formed between the two opposite sides of the partition plates 101 and the housing 1; The shaft mounting portion 2 includes a square cavity 201 and a circular cavity 202 constructed within the deep cavity 104. The square cavity 201 is configured with an outwardly protruding shaft tube 1 203. The circular cavity 202 is configured with multiple shaft tubes 204 protruding in the same direction as the shaft tubes 1 203. The shallow cavity 103 is configured with a shaft tube 3 205 coaxially arranged with the shaft tubes 1 203 and 204 and protruding in the opposite direction. The reinforcing rib 3 is arranged in the shallow cavity 103, the square cavity 201 and the circular cavity 202; A lug 4 protruding from the side of the housing 1; The electric hoist box body is mainly composed of an outer shell 1, a shaft mounting part 2, reinforcement ribs 3 and lugs 4. The square cavity 201 and the circular cavity 202 of the shaft mounting part 2 are respectively used to install shafts of different shapes and sizes. The setting of the reinforcement rib 3 is used to increase the structural strength of shaft tube 1 203 and shaft tube 2 204 on the one hand, and on the other hand, the cavity in this area can be used as a buffer groove for the main cavity of the outer shell 1 when the die-cast raw material is impacted and injected. The lug 4 is protruding from the side of the outer shell 1. It should be noted that the lug 4 includes two parts. One part is the reserved lifting lug of the electric hoist box body itself. The lifting lug part is set upward during die-casting, which can make the bubbles float to the edge of the part. The part containing bubbles can be removed during fine processing to ensure the quality and structural strength of the overall product. The other part is the material surplus expansion component of the outer shell 1, which can be cut off during fine processing to ensure the integrity of the main filling of the outer shell 1 during die-casting and improve the product molding rate.

[0022] like Figure 1-Figure 3As shown, the specific forms of the reinforcing ribs 3 in the circular cavity 202 and the shallow cavity 103 of the present invention are disclosed. The reinforcing ribs 3 in the circular cavity 202 are all in a triangular inclined plate structure, and the reinforcing ribs 3 in the shallow cavity 103 are all in a square plate structure. The depth of the shallow cavity 103 is less than the depth of the deep cavity 104. Therefore, the reinforcing ribs 3 therein are set as square plates, which can increase the injection amount during die casting. The reinforcing ribs 3 in the circular cavity 202 are in the shape of triangular inclined plates. On the one hand, they are used to ensure the structural strength of the shaft tube 204. On the other hand, they cooperate with the shallow cavity 103 to balance the feed amount, ensure the pressure balance during injection impact, and thus ensure the filling integrity of the die-casting raw material.

[0023] like Figure 1-Figure 3 As shown, the specific structure of the square cavity 201 of the present invention and the specific structure of the reinforcing rib 3 therein are disclosed. A side opening 2011 is constructed on one side of the square cavity 201 in the same direction as the opening of the middle cavity 102. The reinforcing rib 3 between the shaft tube 1 203 and the side opening 2011 is in the shape of a straight plate. The reinforcing rib 3 on the other side of the shaft tube 1 203 and the square cavity 201 is in the shape of a triangular oblique plate. Part of the lug 4 is constructed on the side of the shell 1 and is located at the edge of the side opening 2011 and the middle cavity 102. The side opening 2011 is provided for the structural requirements of the electric hoist box itself and can reduce the subsequent precision processing. The processing steps of the process are simplified, and the processing cost is saved. At the same time, this part can be used to reduce the amount of filler around the square cavity 201, and balance it with the amount of filler in the shallow cavity 103 to ensure the integrity of the filler during injection impact. It should be noted that the above-mentioned lug 4 is constructed at the edge of the side opening 2011 and the middle cavity 102. The lug 4 is a reserved part for the margin. At the same time, it is installed on the bottom side of the mold, facing downward, to ensure the filling integrity of the die-casting raw material. At the same time, setting it in this position can facilitate subsequent processing and cutting operations. The other part of the lug 4 is set on the top and used as a lifting lug.

[0024] like Figure 4-Figure 9 As shown, an electric hoist box mold proposed in one embodiment of the present invention includes: The mold base 5 has a mounting groove 501 in the middle thereof, the mounting groove 501 is connected to the bottom mold 6, and the bottom mold 6 is installed with an inner mold insert 7 protruding upward; The left mold 8 and the right mold 9 are provided with a transverse groove 502 extending through the upper side of the bottom mold 6 in the mold base 5. The left mold 8 and the right mold 9 are slidably mounted in the transverse groove 502. The mold base 5 is provided with a driving member 10 located at both ends of the transverse groove 502 and used to push the left mold 8 and the right mold 9 toward the bottom mold 6. The driving member 10 is a hydraulic push rod used to synchronously dock the left mold 8 and the right mold 9 on the mold base 5. The mold cover 11 is fastened to the upper side of the mold base 5. The mold cover 11 is constructed with a connecting groove 1101 arranged vertically opposite to the mounting groove 501. The top mold 12 is detachably mounted in the connecting groove 1101. A horizontal molding cavity is formed between the top mold 12, the bottom mold 6, the left mold 8, the right mold 9, and the inner mold insert 7. It should be noted that the mold base 5 is provided with four guide columns arranged obliquely toward the center, which can be plugged and guided with the mold cover 11 to facilitate accurate fastening of the mold cover 11. The pressing piece 13 is connected to the mold cover 11, and the end of the pressing piece 13 is inserted into the mold base 5 and communicated with the bottom mold 6; The overflow member 14 includes a residual material receiving block 1401 mounted on the die base 5 and the die cover 11 and arranged opposite to the pressing member 13. The bottom die 6 is provided with an overflow groove 1402 connected to the residual material receiving block 1401 and the molding cavity. The corner suction piece 15 is provided on the mold base 5 and is connected to the overflow groove 1402, and is used to suck the residual material at the edge of the molding cavity; This mold mainly consists of a mold base 5, a bottom mold 6, an inner mold plug-in block 7, a left mold 8, a right mold 9, a mold cover 11, a top mold 12, a pressing piece 13, an overflow piece 14 and a corner suction piece 15, wherein the mold base 5 serves as a bearing component, and the mold cover 11 is driven by a hydraulic press to engage with the mold base 5, the bottom mold 6 and the top mold 12 installed therein are detachably installed in the mounting groove 501 and the connecting groove 1101 respectively by bolts, and the inner mold plug-in block 7 is detachably connected to the bottom mold 6, the inner mold plug-in block 7 is used to position and form the middle cavity 102 and the side opening 2011 in the shell 1, and the left mold 8 and the right mold 9 are used to position and form the shallow cavity 103 and the deep cavity 104 in the shell 1. It can be seen that the pressing piece 13 and the overflow piece 14 are mainly connected to the side wall end of the shell 1, and the upper and lower parts of the side wall are the structure of the lug 4, that is, located in the bottom mold 6 and the top mold 12; When the mold is closing, the cylinder is first required to drive the mold cover 11 to move downward as a whole through the guide column until it engages with the mold base 5, and the lower surface of the top mold 12 is in contact with the upper surface of the bottom mold 6. The inner mold block 7 is inserted into the top mold 12, and the left mold 8 and the right mold 9 are pushed into the slot between the bottom mold 6 and the top mold 12 through the driving part 10 to form a horizontal molding cavity of the electric hoist. At this time, the pressing piece 13 is inserted into the bottom mold 6 and connected to the molding cavity to facilitate the injection operation of the die-casting raw material. When the die-casting raw material injection operation is performed, the corner suction piece 15 needs to run at the same time to facilitate the suction of the raw material into the edge of the molding cavity first, to ensure the filling integrity during injection, and to improve the product yield.

[0025] like Figure 4-Figure 5As shown, the specific structure of the pressing piece 13 of the present invention is disclosed. The pressing piece 13 includes a feed column 1301 inserted at one end of the bottom mold 6, and an L-shaped pressing hole 1302 is constructed in the feed column 1301. The bottom mold 6 is provided with a feed trough 1303 connected to the L-shaped pressing hole 1302. The setting of the L-shaped pressing hole 1302 can make the die-casting raw material enter the molding cavity from the feed column 1301. Initial buffering is performed at the turning point, avoiding excessive flow rate that causes most of the die-casting raw material to rush into the overflow piece 14, thereby ensuring the product molding rate.

[0026] like Figure 5 and Figure 8 As shown, the specific structure of the feed trough 1303 of the present invention is disclosed to ensure uniform feeding and secondary buffering of feeding speed. The feed trough 1303 is fan-shaped and the wide end is constructed with a plurality of feed holes 1304 connected to the molding cavity. The top mold 12 is constructed with an inverted V-shaped buffer cavity 1305 connected to the feed hole 1304. The side of the feed trough 1303 is constructed with a U-shaped charging trough 1306 located on one side of the molding cavity and connected thereto. By setting a plurality of feed holes 1304, these feed holes 1304 are connected to different areas of the molding cavity, so that the die-casting raw materials can enter these areas of the molding cavity at the same time, ensuring filling efficiency and quality. At the same time, the inverted V-shaped buffer cavity 1305 is provided to secondary buffer the feeding speed, avoid the excessive impact force of the die-casting raw materials from overflowing from the connecting gap, and ensure product molding quality.

[0027] like Figure 8-Figure 9As shown, the specific structure of the overflow trough 1402 of the present invention is disclosed. The overflow trough 1402 includes a plurality of straight discharge troughs 14021 and two U-shaped discharge troughs 14022. The straight discharge trough 14021 is constructed on the bottom mold 6 and is connected to the molding cavity and the residual material receiving block 1401. The U-shaped discharge trough 14022 is constructed between the bottom mold 6 and the top mold 12 and is located on both sides of the molding cavity, that is, the U-shaped discharge trough 14022 is arranged on the side of the shallow cavity 103 and the deep cavity 104 of the shell 1 to ensure sufficient filling margin on the end face of the product. One of the U-shaped discharge troughs 14022 is arranged opposite to the U-shaped filling trough 1306. The two ends of the U-shaped filling trough 1306, the middle of the straight discharge trough 14021 and the U-shaped discharge trough 14022 Buffer pressure grooves 14023 connected to the molding cavity are constructed on both sides. It should be noted that the opening size of the straight discharge groove 14021 is smaller than the opening size of the U-shaped discharge groove 14022. During the injection operation, after the die-casting raw material is filled in the molding cavity, the remaining material will first flow toward the straight discharge groove 14021 closest to the feed groove 1303. By distinguishing the opening sizes of the two, the die-casting raw material will encounter resistance at the straight discharge groove 14021, thereby causing part of the raw material to flow toward the U-shaped filling groove 1306, so as to balance the flow range and direction of the raw material, ensure the filling rate, and improve the product molding quality. The buffer pressure groove 14023 is mainly used to increase the carrying space of the remaining material and ensure the product molding effect.

[0028] like Figure 4-Figure 6 As shown, the specific structure of the corner suction piece 15 of the present invention is disclosed, which uses negative pressure to guide the direction of the die-casting raw material. The corner suction piece 15 includes a suction pipe 1501 installed on the mold base 5, and one end of the suction pipe 1501 is connected to the middle part of the U-shaped discharge trough 14022 and the other end is inserted with a pulling rod 1502. It should be noted that the driving force of the pulling rod 1502 is mainly driven by external force such as a hydraulic push rod. While the die-casting raw material is being injected, the pulling rod 1502 is started to be pulled toward the outside of the suction pipe 1501, so as to generate negative pressure in the U-shaped discharge trough 14022, guiding part of the raw material to enter it first, so that the die-casting raw material can fill the edge corners of the product completely, thereby ensuring the molding quality of the product.

[0029] like Figure 5-Figure 6As shown in the figure, the position of the ejector pin 16 of the present invention is disclosed to ensure the quality of demolding. A plurality of ejector pins 16 inserted into the feed groove 1303, the molding cavity and the buffer pressure groove 14023 are installed on the bottom mold 6. The ejector pin 16 located in the molding cavity abuts against the end face of the opening of the middle cavity 102 of the shell 1. It should be noted that a cutting allowance will be reserved on this end face when the product is molded. The ejector pin 16 is arranged at this position to avoid affecting the product precision. At the same time, the remaining ejector pins 16 are arranged in the feed groove 1303 and the buffer pressure groove 14023, so that the product can be evenly stressed when being ejected without touching the body of the product, thereby ensuring product quality.

[0030] like Figures 1-9 As shown, an electric hoist box processing process proposed in one embodiment of the present invention includes: S1: The hydraulic press drives the die cover 11 to move downward as a whole through the guide column until it engages with the die base 5. The lower surface of the top die 12 is in contact with the upper surface of the bottom die 6. The inner die insert 7 is inserted into the top die 12. The left die 8 and the right die 9 are pushed into between the bottom die 6 and the top die 12 by the driving member 10 to form a molding cavity. The feed column 1301 is inserted into the bottom die 6. The L-shaped pressing hole 1302, the feed trough 1303 and the feed trough 1303 are connected to the molding cavity. S2: inject an appropriate amount of die-casting raw material into the feed column 1301, and use external force to quickly press the die-casting raw material into the molding cavity through the feed trough 1303 and the U-shaped charging trough 1306; S3: The die-casting raw materials overflow from the straight discharge chute 14021 and the U-shaped discharge chute 14022 in sequence. The raw materials in the straight discharge chute 14021 enter the residual material receiving block 1401, and the raw materials in the U-shaped discharge chute 14022 stay in the inverted V-shaped buffer cavity 1305; S4: The cylinder drives the pulling rod 1502 to move, forming a negative pressure in the suction pipe 1501, guiding the die-casting raw material into the suction pipe 1501, so that the die-casting raw material fills the U-shaped discharge trough 14022; S5: When the mold is opened, the mold cover 11 is first lifted upward, and then the left mold 8 and the right mold 9 are withdrawn from the range of the bottom mold 6 at the same time, cutting off the material in the suction tube 1501, and the product is ejected by the ejector pin 16. At the same time, the pull rod 1502 is pulled out to eject the remaining material in the suction tube 1501.

[0031] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Electric hoist box, characterized in that, include: A housing (1), wherein two partition plates (101) are constructed in the middle of the housing (1), an intermediate cavity (102) with an opening facing outward is constructed between the two partition plates (101), and a shallow cavity (103) and a deep cavity (104) are respectively constructed between two opposite sides of the partition plate (101) and the housing (1); The rotating shaft mounting portion (2) comprises a square cavity (201) and a circular cavity (202) constructed in the deep cavity (104); the square cavity (201) is provided with an outer protruding shaft tube (203); the circular cavity (202) is provided with a plurality of second shaft tubes (204) protruding in the same direction as the first shaft tube (203); the shallow cavity (103) is provided with a third shaft tube (205) coaxially arranged with the first shaft tube (203) and the second shaft tube (204) and protruding in the opposite direction; Reinforcing ribs (3) are arranged in the shallow cavity (103), the square cavity (201) and the circular cavity (202); The lug (4) is protruding from the side of the housing (1).

2. The electric hoist box according to claim 1, characterized in that: The reinforcing ribs (3) in the circular cavity (202) are all in the form of a triangular inclined plate structure, and the reinforcing ribs (3) in the shallow cavity (103) are all in the form of a square plate structure.

3. The electric hoist housing according to claim 1, characterized in that: One side of the square cavity (201) is constructed with a side opening (2011) in the same direction as the opening of the middle cavity (102); the reinforcing rib (3) between the shaft tube (203) and the side opening (2011) is in the shape of a straight plate; the reinforcing rib (3) between the shaft tube (203) and the other side of the square cavity (201) is in the shape of a triangular oblique plate; part of the lug (4) is constructed on the side of the shell (1) and is located at the edge of the side opening (2011) and the middle cavity (102).

4. Electric hoist housing mold, used for processing the electric hoist housing according to any one of claims 1 to 3, characterized in that: include: A mold base (5), wherein a mounting groove (501) is formed in the middle of the mold base (5), a bottom mold (6) is connected to the mounting groove (501), and an inner mold insert (7) protruding upward is installed on the bottom mold (6); A left mold (8) and a right mold (9), wherein a transverse groove (502) penetrating the upper side of the bottom mold (6) is constructed in the mold base (5), and the left mold (8) and the right mold (9) are slidably mounted in the transverse groove (502), and a driving member (10) is mounted on the mold base (5) and is located at both ends of the transverse groove (502) and is used to push the left mold (8) and the right mold (9) to move toward the bottom mold (6); The mold cover (11) is buckled on the upper side of the mold base (5), and the mold cover (11) is constructed with a connecting groove (1101) arranged opposite to the mounting groove (501) in the upper and lower directions. The top mold (12) is detachably mounted in the connecting groove (1101), and a horizontal molding cavity is formed between the top mold (12), the bottom mold (6), the left mold (8), the right mold (9), and the inner mold insert (7); A pressing piece (13) is connected to the mold cover (11), and an end of the pressing piece (13) is inserted into the mold base (5) and communicated with the bottom mold (6); The overflow member (14) comprises a residual material receiving block (1401) mounted on the die base (5) and the die cover (11) and arranged opposite to the pressing member (13); the bottom die (6) is provided with an overflow groove (1402) connected to the residual material receiving block (1401) and the molding cavity; A corner suction piece (15) is provided on the mold base (5) and is connected to the overflow groove (1402), and is used to suck the residual material at the edge of the molding cavity.

5. The electric hoist box mold according to claim 4, characterized in that: The pressing piece (13) comprises a feeding column (1301) inserted at one end of the bottom die (6), an L-shaped pressing hole (1302) is constructed in the feeding column (1301), and a feeding trough (1303) connected to the L-shaped pressing hole (1302) is constructed on the bottom die (6).

6. The electric hoist box mold according to claim 5, characterized in that: The feed trough (1303) is fan-shaped and has a plurality of feed holes (1304) connected to the forming cavity at its wide end. An inverted V-shaped buffer cavity (1305) connected to the feed holes (1304) is constructed on the top mold (12). A U-shaped charging trough (1306) located on one side of the forming cavity and connected thereto is constructed on the side of the feed trough (1303).

7. The electric hoist box mold according to claim 6, characterized in that: The overflow trough (1402) comprises a plurality of straight discharge troughs (14021) and two U-shaped discharge troughs (14022), wherein the straight discharge troughs (14021) are constructed on the bottom mold (6) and are connected to the molding cavity and the residual material receiving block (1401), and the U-shaped discharge troughs (14022) are constructed between the bottom mold (6) and the top mold (12) and are located on both sides of the molding cavity, wherein one of the U-shaped discharge troughs (14022) is arranged opposite to the U-shaped charging trough (1306), and buffer pressure troughs (14023) connected to the molding cavity are constructed at both ends of the U-shaped charging trough (1306), the middle of the straight discharge trough (14021), and both sides of the U-shaped discharge trough (14022).

8. The electric hoist box mold according to claim 7, characterized in that: The corner suction piece (15) comprises a suction pipe (1501) mounted on the mold base (5), one end of the suction pipe (1501) being connected to the middle of the U-shaped discharge chute (14022) and the other end of the suction pipe being inserted with a pulling rod (1502).

9. The electric hoist box mold according to claim 7, characterized in that: The bottom mold (6) is penetrated by a plurality of ejector pins (16) inserted into the feed groove (1303), the molding cavity, and the buffer pressure groove (14023). The ejector pins (16) located in the molding cavity abut against the end surface of the opening of the middle cavity (102) of the shell (1).

10. A process for processing an electric hoist housing, using the electric hoist housing mold according to any one of claims 4 to 9, characterized in that: include: S1: The hydraulic press drives the mold cover (11) to move downward as a whole through the guide column until it engages with the mold base (5), the lower surface of the top mold (12) contacts and connects with the upper surface of the bottom mold (6), the inner mold insert (7) is inserted into the top mold (12), the left mold (8) and the right mold (9) are pushed into between the bottom mold (6) and the top mold (12) through the driving member (10), forming a molding cavity, the feed column (1301) is inserted into the bottom mold (6), and the L-shaped pressing hole (1302), the feed trough (1303) and the feed trough (1303) are connected to the molding cavity; S2: injecting an appropriate amount of die-casting raw material into the feed column (1301), and quickly pressing the die-casting raw material into the molding cavity through the feed trough (1303) and the U-shaped charging trough (1306) by external force; S3: The die-casting raw materials overflow from the straight discharge trough (14021) and the U-shaped discharge trough (14022) in sequence. The raw materials in the straight discharge trough (14021) enter the residual material receiving block (1401), and the raw materials in the U-shaped discharge trough (14022) stay in the inverted V-shaped buffer cavity (1305); S4: The cylinder drives the pulling rod (1502) to move, forming a negative pressure in the suction pipe (1501), guiding the die-casting raw material into the suction pipe (1501), so that the die-casting raw material fills the U-shaped discharge trough (14022); S5: When the mold is opened, the mold cover (11) is first lifted upward, and then the left mold (8) and the right mold (9) are simultaneously withdrawn from the range of the bottom mold (6), cutting off the material in the suction tube (1501), and the product is ejected through the ejector pin (16), and at the same time, the pull rod (1502) is pulled out to eject the remaining material in the suction tube (1501).

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