Injection mold capable of accurately aligning washing machine shell

Abstract

The invention discloses an injection mold capable of accurately aligning a washing machine shell, and relates to the technical field of household appliance production equipment, the injection mold comprises an injection molding machine and a mold group composed of a front mold and a rear mold, the two side surfaces of the mold group are both provided with insertion holes, and insertion rods are adaptively inserted in the insertion holes; an inserting rod is installed on the side face of the mold assembly, a distance detecting rod in a vertical state is installed at the extending end of the inserting rod, a plane part is arranged on the injection molding machine, and when the bottom end of the distance detecting rod makes contact with the plane part, an injection molding hole of the mold assembly and an injection molding machine nozzle on the injection molding machine are located on the same horizontal plane. Whether the injection molding hole of the mold set and the injection molding machine nozzle on the injection molding machine are located on the same horizontal plane or not is judged according to the contact condition of the distance detection rod and the machine table plane, and accurate butt joint of the injection molding hole of the subsequent mold set and the injection molding machine nozzle on the injection molding machine is facilitated.

Description

Technical Field

[0001] This invention relates to the field of home appliance manufacturing equipment technology, specifically to an injection mold for precisely aligning the outer shell of a washing machine. Background Technology

[0002] Injection molds are used to inject molten plastic into a precision-machined cavity under high temperature and pressure. After cooling, the desired product is formed. In the home appliance industry, the plastic casing of washing machines is made by injection molds. The weight and specifications of existing injection molds are usually positively correlated with the product volume.

[0003] Existing injection molds consist of a front mold and a rear mold arranged horizontally. When installing the injection mold on the injection molding machine, the injection hole of the mold needs to be precisely aligned with the injection nozzle on the injection molding machine, otherwise leakage will occur.

[0004] The current method involves setting a positioning ring protruding from the outer end of the rear mold of the injection mold. The positioning ring is matched with a groove on the front face of the injection molding machine to determine the position of the mold on the injection molding machine. However, the existing solution has shortcomings. Because the injection mold is bulky, it is usually moved to the mold installation position on the injection molding machine using an overhead crane. During the process of docking the injection hole of the mold with the injection nozzle on the injection molding machine, the mold and the machine are squeezed and slid against each other. The mold and the injection molding machine are prone to multiple violent collisions. On the one hand, this can easily damage the machine, and on the other hand, it can cause deformation of the mold fit, which is not conducive to subsequent normal production. Summary of the Invention

[0005] The purpose of this invention is to provide an injection mold for precisely aligning the outer casing of a washing machine, thereby overcoming the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An injection mold for precisely aligning a washing machine casing includes an injection molding machine and a mold assembly consisting of a front mold and a rear mold. The mold assembly has insertion holes on both sides, and insertion rods are fitted into each insertion hole. A vertically positioned probe rod is installed on the extended end of each insertion rod. The injection molding machine has a flat surface. When the bottom end of the probe rod contacts the flat surface, the injection hole of the mold assembly and the injection nozzle of the injection molding machine are on the same horizontal plane.

[0008] Preferably, each side of the mold assembly has two insertion holes, and the two insertion holes on each side of the mold assembly are located on the side of the front mold and the side of the rear mold, respectively.

[0009] Preferably, two parallel limiting plates are installed on the plane part, and when the opposite surfaces of the two limiting plates simultaneously contact the side surface of the distance measuring rod, the injection hole of the mold set is in the same vertical plane as the injection nozzle of the injection machine.

[0010] Preferably, a pulling rod is arranged on the side surface of the mold set, and the two ends of the pulling rod are fixed to the corresponding insertion rods.

[0011] Preferably, a hanging opening is arranged on the top of the mold set and communicates with the insertion hole, and the rod body of the insertion rod in the hanging opening can be hooked by the crane hook.

[0012] Preferably, the insertion rod is a hollow pipe column structure, the insertion rod is provided with a core rod inside, an opening is arranged at the bottom of the rod body of the insertion rod in the hanging opening, the crane hook can contact the core rod through the opening, and an elastic buffer unit is arranged between the core rod and the inner top wall of the hollow insertion rod, and the elastic buffer unit can play a buffering role when the core rod approaches the inner top wall of the hollow insertion rod.

[0013] Preferably, a notch is arranged on the protruding end of the insertion rod and communicates with the outside, and one end of the distance measuring rod is connected to the hollow pipe column of the insertion rod through the notch.

[0014] Preferably, a locking unit is arranged between the protruding end of the distance measuring rod and the inner top wall of the hollow insertion rod, and the locking unit can lock the distance measuring rod in the vertical state.

[0015] Preferably, the locking unit comprises an elastic buffer unit, a first elastic check valve is installed on the elastic buffer unit, a protruding plate is fixed to the protruding end of the distance measuring rod, and when the distance measuring rod is in the vertical state, the first elastic check valve is engaged with the protruding plate to be locked.

[0016] Preferably, the elastic buffer unit comprises a mounting groove arranged on the inner top wall of the hollow insertion rod, a lever plate is arranged in the mounting groove, the middle part of the lever plate is hinged to the mounting groove, one end of the lever plate is installed with the first elastic check valve, and the other end of the lever plate is connected to the groove bottom of the mounting groove through a spring. When the core rod contacts the inner top wall of the hollow insertion rod, the spring is compressed and deformed, and the first elastic check valve is engaged with the protruding plate to be locked.

[0017] In the technical scheme, the injection mold for precisely aligning the washing machine shell is provided, the distance probe rod is installed on the side of the mold assembly, the contact condition between the distance probe rod and the machine table is determined, whether the injection hole of the mold assembly and the injection nozzle on the injection machine are in the same horizontal plane is determined, the injection hole of the subsequent mold assembly and the injection nozzle on the injection machine are precisely connected, the collision connection between the mold assembly and the machine table is reduced, the machine table and the mold are protected, the safety and the installation efficiency of the mold assembly are improved, and the installation process is fast, convenient and accurate. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Figure 1 The schematic diagram of the injection mold for precisely aligning the washing machine shell in the present application is hung and installed on the injection machine.

[0020] Figure 2 The schematic diagram of the plug-in interface of the injection mold for precisely aligning the washing machine shell in the present application is shown.

[0021] Figure 3 The present application Figure 2 The enlarged view of A in the present application;

[0022] Figure 4 The schematic diagram of the locking structure of the injection mold for precisely aligning the washing machine shell in the present application is shown.

[0023] Figure 5 The schematic diagram of the injection mold for precisely aligning the washing machine shell in the present application is shown in a suspended state.

[0024] Explanation of reference signs:

[0025] 1, injection machine; 2, mold assembly; 3, plug-in hole; 4, plug-in rod; 5, distance probe rod; 6, flat part; 7, limiting plate; 8, pulling rod; 9, hanging opening; 10, core rod; 11, opening; 12, elastic buffer unit; 12.1, installation groove; 12.2, lever plate; 12.3, spring; 13, notch; 14, locking unit; 15, protruding plate; 16, first elastic check unit; 17, second elastic check unit; 18, horizontal bubble column; 19, recessed groove; 20, check plate; 21, return spring. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the technical solutions of the present application, further detailed description of the present application will be made below with reference to the drawings.

[0027] The washing machine shell is injection molded on an injection molding machine through an injection mold, the injection mold is composed of a front mold and a rear mold arranged horizontally, the front mold and the rear mold have two states of mold closing and mold opening, when the injection mold is installed on the injection molding machine, the front mold and the rear mold of the injection mold are in the mold closing state, then the injection mold is hoisted to the mold mounting position of the injection molding machine through the crane equipment, since the crane is connected with the injection mold through the chain hook, the injection mold is inevitably swung during the movement of the injection mold driven by the crane, since the reserved space of the mold mounting position of the injection molding machine is limited, therefore, in the actual operation process, it is very easy to cause the collision between the injection mold and the injection molding machine, especially when the injection hole of the existing injection mold is aligned with the injection nozzle on the injection molding machine, the way adopted is that a positioning ring protruding from the mold is arranged on the outer end of the rear mold of the injection mold, the positioning ring is matched with the groove on the front end face of the injection molding machine, so as to determine the position of the mold on the injection molding machine, therefore, in the actual operation, the mold needs to be directly contacted and slid to the side wall of the mounting position of the machine table, until the positioning ring is matched with the groove on the front end face of the injection molding machine, during the whole process, the mold and the machine table are mutually extruded and slid, the mold and the injection molding machine are easily collided several times, on the one hand, the machine table is easily damaged, on the other hand, the mold is also deformed, which is not conducive to the subsequent normal production, in order to solve the above problems, the present application provides an injection mold for precisely aligning the washing machine shell.

[0028] Please refer to Figure 1 - Figure 5 The injection mold for precisely aligning the washing machine shell provided by the embodiment of the present application comprises an injection molding machine 1 and a mold set 2 composed of a front mold and a rear mold, plug-in holes 3 are arranged on the two side faces of the mold set 2, plug-in rods 4 are matched and plugged into the plug-in holes 3, distance measuring rods 5 in a vertical state are installed on the protruding ends of the plug-in rods 4, a plane part 6 is arranged on the injection molding machine 1, when the bottom ends of the distance measuring rods 5 are in contact with the plane part 6, the injection hole of the mold set 2 and the injection nozzle on the injection molding machine 1 are on the same horizontal plane.

[0029] Specifically, the axis of the plug-in hole 3 is parallel to the top horizontal plane of the mold, the plug-in hole 3 and the internal waterway structure of the mold do not interfere with each other, the plug-in rod 4 is matched and plugged into the plug-in hole 3, part of the rod body of the plug-in rod 4 protrudes from the outside of the mold set 2, the axis of the rod body of the distance measuring rod 5 in a vertical state is perpendicular to the horizontal plane, the axis of the distance measuring rod 5 in a vertical state is perpendicular to the axis of the plug-in rod 4, the bottom end of the distance measuring rod 5 in a vertical state is lower than the bottom plane of the mold set 2, the top face of the plane part 6 is parallel to the horizontal plane, and the plane part 6 is located below the mold mounting position of the injection molding machine 1.

[0030] In actual use, first, the plug-in rod 4 is plugged with the corresponding plug-in hole 3, then the distance measuring rod 5 is adjusted to the vertical state, then the mold set 2 is lifted by the row of lifting equipment to the position above the mold loading position of the injection molding machine 1, after the mold set 2 is stable and does not swing, then the mold set 2 is slowly lowered, when the vertical state of the distance measuring rod 5 contacts the plane 6, the mold set 2 is immediately stopped, and the injection hole of the mold set 2 is in the same horizontal plane as the injection nozzle of the injection molding machine 1;

[0031] It needs to be additionally explained that the mode of driving the front mold and the rear mold of the mold set 2 to perform mold closing and mold opening of the injection molding machine 1 is that a mold locking mechanism is installed on the injection molding machine 1, the mold locking mechanism mainly includes a fixed plate fixed on the injection molding machine 1 and a movable plate capable of linearly moving horizontally relative to the fixed plate, the plate surfaces of the fixed plate and the movable plate are perpendicular to the horizontal plane, the front mold and the rear mold of the mold set 2 are respectively installed on the fixed plate and the movable plate, when the mold set 2 is installed, the distance between the fixed plate and the movable plate of the mold locking mechanism is in the maximum state, thereby reserving sufficient installation space for the installation of the mold set 2, the mold locking mechanism of the injection molding machine 1 is prior art, and will not be described in detail;

[0032] When the injection hole of the mold set 2 is in the same horizontal plane as the injection nozzle of the injection molding machine 1, the injection molding machine is switched to the mold closing mode, at this time, the front and rear ends of the mold set 2 are clamped by the clamping force of the mold locking mechanism of the injection molding machine 1, the two ends of the mold set 2 are clamped by the fixed plate and the movable plate, at this time, the injection hole of the mold set 2 and the injection nozzle of the injection molding machine are also completed, then the front mold and the rear mold are respectively fixed on the corresponding fixed plate and movable plate through the corresponding clamping pieces, at this time, the row of lifting equipment is lowered, the mold set 2 does not move downward, then the lifting hook of the row of lifting equipment and the plug-in rod 4 are separated from the mold set 2.

[0033] During the whole process, whether the injection hole of the mold set and the injection nozzle of the injection molding machine are in the same horizontal plane is determined by the contact between the distance measuring rod and the machine table, which is beneficial to the accurate butt joint of the injection hole of the subsequent mold set and the injection nozzle of the injection molding machine, and also reduces the collision butt joint of the mold set and the machine table, thereby protecting the machine table and the mold, and improving the safety and installation efficiency of the mold set 2.

[0034] Another embodiment provided by the present application is that the plug-in hole 3 on each side of the mold set 2 is two, the two plug-in holes 3 on each side of the mold set 2 are respectively located on the side of the front mold and the side of the rear mold, wherein the side of the mold set 2 is provided with a pulling rod 8, the two ends of the pulling rod 8 are fixed with the corresponding plug-in rod 4, and the pulling rod 8 and the plug-in rod 4 can lock the mold closing state of the mold set 2.

[0035] That is to say, in actual use, the mold set 2 in the closed state may be separated due to the extrusion force between the front mold and the rear mold concentrating on a certain part during hoisting and transportation, so that the front mold and the rear mold cannot be completely fitted, or the mold set 2 may have an uneven extrusion force problem between the front mold and the rear mold during hoisting. At this time, the pulling rod 8, the plug-in rod 4 and the plug-in hole 3 located on the side surface of the front mold and the side surface of the rear mold jointly constitute a locking structure for the mold set 3 in the hoisting state, so that the mold set 2 in the closed state is in a force-stable state in the hoisting state, and the loosening of the mold set 3 due to the hoisting force and the uneven force are avoided.

[0036] In another embodiment of the present application, a horizontal bubble column 18 is embedded and fixed on the pulling rod 8, the rod body of the pulling rod 8 is parallel to the top surface of the mold set 2, and the horizontal bubble column 18 is convenient for judging the horizontal state of the pulling rod 8. Preferably, both ends of the pulling rod 8 are screw head structures, and the two ends of the pulling rod 8 are screw-plugged with the side surface of the plug-in rod 4. In actual use, the locking force of the pulling rod 8 and the plug-in rod 4 for locking the closed state of the mold set 2 can be controlled by twisting the pulling rod 8.

[0037] In another embodiment of the present application, two parallel limiting plates 7 are installed on the plane part 6. The plane part 6 can be alternatively a frame surface structure, the frame opening forms the plane part 6, and there is a spacing space between the two limiting plates 7. The spacing distance between the two limiting plates 7 is greater than the width value of the mold set 2. The limiting plate 7 forms a stepped structure on the plane part 6. When the opposite plate surfaces of the two limiting plates 7 simultaneously contact the side surface of the distance measuring rod 5, the injection hole of the mold set 2 and the injection nozzle of the injection molding machine 1 are on the same vertical plane.

[0038] In actual use, when the vertically arranged distance measuring rod 5 approaches the plane part 6, the hoisting of the mold set 2 is immediately stopped. Since the mold set 2 is still in the hoisting state, the mold set 2 is rotated so that the end injection hole of the mold set 2 is aligned with the injection nozzle of the injection molding machine. At this time, the distance measuring rods 5 on both sides of the mold set 2 respectively contact the side surface of the corresponding limiting plate 7, so that the end injection hole of the mold set 2 is in the aligned state with the injection nozzle of the injection molding machine, and the precise butt joint of the end injection hole of the mold set 2 and the injection nozzle of the injection molding machine is facilitated.

[0039] In summary, the relative distance between the distance detection rod 5 and the plane part 6 is detected to determine whether the end injection hole of the mold set 2 and the injection nozzle on the injection molding machine are in the same horizontal plane, and then the contact between the two distance detection rods 5 and the side surface of the limiting plate 7 is detected to determine whether the end injection hole of the mold set 2 and the injection nozzle on the injection molding machine are in the same vertical plane. When the two are determined, the end injection hole and the injection nozzle on the injection molding machine are connected by the clamping of the clamping mechanism of the injection molding machine, thereby improving the installation precision and speed of the mold set 2 on the injection molding machine, and the structure is simple and easy to implement.

[0040] In another embodiment provided by the application, the rod body of the distance detection rod 5 includes a hard rod connected with the plug-in rod 4, and a flexible rod is coaxially fixed to the other end of the hard rod, so that when the lower half of the distance detection rod 5 is pressed against the side surface of the limiting plate 7, the flexible rod can be elastically bent, thereby achieving a certain collision and preventing breakage. The flexible rod is made of a material such as wood, elastic plastic or glass fiber, which has elasticity.

[0041] In another embodiment provided by the application, a hanging hole 9 is formed in the top of the mold set 2 and is in communication with the plug-in hole 3. The hanging hole 9 is a deep groove structure, the axis of the plug-in hole 3 penetrates the side wall of the hanging hole 9, and the rod body of the plug-in rod 4 located in the hanging hole 9 can be hooked by a crane hook. Further, the plug-in rod 4 is a hollow pipe column structure, which is actually a hard cylinder tube. A core rod 10 is arranged in the plug-in rod 4, and the core rod 10 is made of hard metal material, thereby enhancing the rigidity of the plug-in rod 4. An opening 11 is formed in the bottom of the rod body of the plug-in rod 4 located in the hanging hole 9, so that the crane hook can contact the core rod 10 through the opening 11. The core rod 10 can move radially in the hollow pipe column structure of the plug-in rod 4. An elastic buffer unit 12 is arranged between the core rod 10 and the inner top wall of the plug-in rod 4, and the elastic buffer unit 12 can play a buffering role when the core rod 10 approaches the inner top wall of the plug-in rod 4.

[0042] In actual use, when the plug-in rod 4 is plugged into the plug-in hole 3, the plug-in rod 4 can be seen penetrating the hanging hole 9 through the hanging hole 9. At this time, the crane hook is inserted into the hanging hole 9, so that the hook is hooked with the plug-in rod 4. The crane hook contacts the core rod 10 through the opening 11. When the crane hook rises, the core rod 10 moves vertically upward in the internal space of the plug-in rod 4 under the hooking force of the crane hook. At this time, the elastic buffer unit 12 is elastically deformed under stress, and in the deformation process of the elastic buffer unit 12, the plug-in rod 4 also moves to fit the hole wall of the plug-in hole 3, thereby avoiding the situation that the plug-in rod 4 is subjected to excessive impact force due to the too fast rising of the crane hook.

[0043] That is, the hook of the special crane is connected with the trolley through a chain, so that the whip effect of the crane in the lifting moment will also aggravate the impact between the inserting rod 4 and the inserting hole 3, and the elastic buffering unit 12 can effectively improve the impact between the inserting rod 4 and the inserting hole 3; when the top wall of the hollow pipe column of the inserting rod 4 is fully contacted with the core rod 10, the elastic buffering unit 12 is in the maximum deformation state at this time, and then the hook of the crane continues to rise, so that the mold group 2 moves with the hook of the crane.

[0044] In another embodiment of the present application, the extending end of the inserting rod 4 is provided with a gap 13 communicating with the outside, and one end of the distance measuring rod 5 is pivotally connected in the hollow pipe column of the inserting rod 4 through the gap 13. It should be particularly noted that the fan surface formed by the deflection track of the distance measuring rod 5 is perpendicular to the side surface of the mold group 2. When the distance measuring rod 5 is in the vertical state, the distance measuring rod 5 is parallel to the side surface of the mold group 2. When the distance measuring rod 5 is in the horizontal state, the distance measuring rod 5 is perpendicular to the side surface of the mold group 2. The axis of the distance measuring rod 5 is on the same straight line as the axis of the inserting rod 4.

[0045] Since the bottom end of the distance measuring rod 5 is lower than the bottom end of the mold group 2, and the mold group 2 is generally placed on a pallet or the ground, the distance measuring rod 5 is inconvenient to install on the mold group 2. Therefore, in actual use, the distance measuring rod 5 is pivotally connected with the inserting rod 4. When the mold group 2 has not been lifted, the axis of the distance measuring rod 5 is on the same straight line as the axis of the inserting rod 4. At this time, the distance measuring rod 5 is in the horizontal state, and the distance measuring rod 5 is perpendicular to the side surface of the mold group 2. When the mold group 2 is lifted, the distance measuring rod 5 is switched to the vertical state, so that the distance measuring rod 5 can be normally used on the mold group 2.

[0046] In another embodiment of the present application, a locking unit 14 is arranged between the extending end of the distance measuring rod 5 and the hollow inner top wall of the inserting rod 4. The locking unit 14 can lock the distance measuring rod 5 in the vertical state, so as to avoid the swing of the mold group 2 in the vertical state.

[0047] Further, the locking unit 14 comprises an elastic buffering unit 12, and a first elastic check unit 16 is arranged on the elastic buffering unit 12. A protruding plate 15 is fixed to the extending end of the distance measuring rod 5, and the length direction line of the protruding plate 15 is parallel to the axis of the distance measuring rod 5. When the distance measuring rod 5 is in the vertical state, the first elastic check unit 16 is engaged with the protruding plate 15 to be locked. A second elastic check unit 17 is movably arranged at the end of the core rod 10. The check direction of the first elastic check unit 16 is opposite to the check direction of the second elastic check unit 17.

[0048] It is further needed to be explained that the first elastic check unit 16 and the second elastic check unit 17 both include a recessed groove 19 hinged on the installation object, and a check plate 20 hinged in the recessed groove 19, and a reset spring 21 arranged between the check plate 20 and the recessed groove 19, and the first elastic check unit 16 and the second elastic check unit 17 are of the same structure.

[0049] Specifically, the elastic buffering unit 12 includes a mounting groove 12.1 opened on the hollow inner top wall of the plug-in rod 4, the mounting groove 12.1 is a long slot, the length direction of the mounting groove 12.1 is parallel to the axial direction of the plug-in rod 4, a lever plate 12.2 is arranged in the mounting groove 12.1, the length direction of the lever plate 12.2 is parallel to the length direction of the mounting groove 12.1, the middle part of the lever plate 12.2 is hinged with the mounting groove 12.1, the lever plate 12.2 can have lever movement in the mounting groove 12.1, one end of the lever plate 12.2 is mounted with the first elastic check unit 16, the other end of the lever plate 12.2 is connected with the groove bottom of the mounting groove 12.1 through a spring 12.3, when the core rod 10 contacts with the hollow inner top wall of the plug-in rod 4, the spring 12.3 is compressed and deformed, and the first elastic check unit 16 is engaged with the protruding plate 15 in the locked state;

[0050] In actual use, when the mold group 2 has not been lifted, the distance probe rod 5 is in the horizontal state at this time, and the elastic buffering unit 12 is also in the natural state at this time, the second elastic check unit 17 at the end of the core rod 10 is on the deflection trajectory line of the protruding plate 15, and the second elastic check unit 17 limits the protruding plate 15 in one direction, so that the distance probe rod 5 is kept in the horizontal state;

[0051] When the mold group 2 is lifted, the core rod 10 moves vertically upward in the internal space of the plug-in rod 4, at this time, the elastic buffering unit 12 is also in the deformed state, the second elastic check unit 17 at the end of the core rod 10 is separated from the deflection trajectory line of the protruding plate 15, at this time, the second elastic check unit 17 no longer limits the protruding plate 15, so that the distance probe rod 5 is switched from the horizontal state to the vertical state under the action of gravity by rotating around the hinged position;

[0052] In the process of switching the distance probe rod 5 to the vertical state, the protruding plate 15 needs to be deflected clockwise, the protruding plate 15 passes through the first elastic check unit 16 clockwise, when the distance probe rod 5 is in the vertical state, at this time, the first elastic check unit 16 prevents the distance probe rod 5 from being deflected reversely, at the same time, the rod body of the distance probe rod 5 also contacts with the edge of the notch 13, at this time, the distance probe rod 5 in the vertical state is limited by the first elastic check unit 16 and the edge of the notch 13 respectively, so that the distance probe rod 5 in the vertical state is in the locked state and cannot be deflected;

[0053] When the mold set 2 is completed on the injection molding machine, the hook of the crane is separated from the hanging opening 9, and then the core rod 10 is vertically downwardly moved in the internal space of the insertion rod 4 under the action of the gravity of the core rod 10 and the elastic restoring force of the spring 12.3, the core rod 10 drives the second elastic check unit 17 to return to the initial position, and the elastic buffer unit 12 also returns to the natural state, and since the first elastic check unit 16 is installed on the lever plate 12.2 of the elastic buffer unit 12, the first elastic check unit 16 is also retracted into the installation slot 12.1 along with the lever plate 12.2 under the action of the elastic restoring force of the spring 12.3, so that the first elastic check unit 16 is separated from the deflection track of the protruding plate 15, and the ranging rod 5 can be switched from the vertical state to the horizontal state, that is, switched to the coaxial state with the insertion rod 4, thereby facilitating the installation and use of the next time.

[0054] During the switching of the ranging rod 5 to the horizontal state, the protruding plate 15 needs to be counterclockwise deflected, and since the core rod 10 drives the second elastic check unit 17 to return to the initial position, the protruding plate 15 counterclockwise passes through the second elastic check unit 17, and at this time, the second elastic check unit 17 prevents the ranging rod 5 from being deflected in the same direction, and at the same time, the rod body of the ranging rod 5 is in contact with the other edge of the notch 13, and at this time, the ranging rod 5 in the horizontal state is limited by the second elastic check unit 17 and the other edge of the notch 13 on both sides, so that the ranging rod 5 in the horizontal state is in a locked state and cannot be deflected.

[0055] In summary, the ranging rod 5 can be deflected relative to the mold set 2 and has two positions of the vertical state and the horizontal state, the ranging rod 5 in the vertical state is in a use state, and the ranging rod 5 in the horizontal state is in a avoiding state, which facilitates the installation of the ranging rod 5 on the mold set 2 and the placement of the mold set 2; no matter the ranging rod 5 is in the vertical state or the horizontal state, the ranging rod 5 can be automatically locked, and the ranging rod 5 is switched from the horizontal state to the vertical state according to the lifting state of the mold set 2, and the process of switching from the vertical state to the horizontal state is also simple to operate, which only needs to directly rotate the ranging rod 5 clockwise.

[0056] In another embodiment of the present application, the hard rod body part of the ranging rod 5 is a telescopic scale rod, and in actual use, the overall length of the ranging rod 5 can be determined by referring to the scale, and after the length is determined, the telescopic scale rod is locked and fixed, so as to ensure that when the ranging rod 5 in the vertical state is in contact with the plane part 6, the injection hole of the mold set 2 is on the same horizontal plane as the injection nozzle of the injection molding machine 1, and the specific fixing mode can be selected as a screw sleeve mode or a bolt connection, and the specific locking and fixing mode is the prior art, which is not described in detail.

[0057] The foregoing merely illustrates some exemplary embodiments of the application, and it will be appreciated that those skilled in the art will be able to devise various modifications without departing from the spirit and scope of the application. The appended drawings and description are illustrative only, and are not intended to be limiting.

Claims

1. A precision alignment injection mold for washing machine shell, comprising an injection molding machine (1) and a mold set (2) composed of a front mold and a back mold, characterized in that, Both sides of the mold group (2) are provided with plug-in holes (3), each plug-in hole (3) is matched with a plug-in rod (4), the extending end of the plug-in rod (4) is provided with a distance measuring rod (5) in a vertical state, the plane part (6) is arranged on the injection molding machine (1), when the bottom end of the distance measuring rod (5) is in contact with the plane part (6), the injection hole of the mold group (2) is in the same horizontal plane with the injection nozzle of the injection molding machine (1).

2. The injection mold for washing machine shell according to claim 1, wherein, The plug-in hole (3) of each side of the mold group (2) is two, the two plug-in holes (3) of each side of the mold group (2) are respectively arranged on the side of the front mold and the side of the rear mold.

3. The injection mold for washing machine shell according to claim 1, wherein, The plane part (6) is provided with two limiting plates (7) parallel to each other, when the opposite plate surfaces of the two limiting plates (7) are in contact with the side of the distance measuring rod (5) at the same time, the injection hole of the mold group (2) is in the same vertical plane with the injection nozzle of the injection molding machine (1).

4. The injection mold for washing machine shell according to claim 2, wherein, The side of the mold group (2) is provided with a pulling rod (8), the two ends of the pulling rod (8) are fixed with the corresponding plug-in rod (4), and the pulling rod (8) and the plug-in rod (4) can lock the mold closing state of the mold group (2).

5. The injection mold for washing machine shell according to claim 2, wherein, The top of the mold group (2) is provided with a hanging hole (9) corresponding to the plug-in hole (3), and the rod body of the plug-in rod (4) located in the hanging hole (9) can be hooked by the crane hook.

6. The injection mold for a washing machine housing according to claim 5, wherein The plug-in rod (4) is a hollow pipe column structure, the inside of the plug-in rod (4) is provided with a core rod (10), the bottom of the rod body of the plug-in rod (4) located in the hanging hole (9) is provided with an opening (11), the crane hook can be in contact with the core rod (10) through the opening (11), and the elastic buffer unit (12) is arranged between the core rod (10) and the hollow inner top wall of the plug-in rod (4). The elastic buffer unit (12) can play a buffering role when the core rod (10) approaches the hollow inner top wall of the plug-in rod (4).

7. The injection mold for a washing machine housing according to claim 6, wherein The extending end of the plug-in rod (4) is provided with a notch (13) in communication with the outside, and one end of the distance measuring rod (5) is connected in the hollow pipe column of the plug-in rod (4) through the notch (13).

8. The injection mold for a washing machine housing according to claim 7, wherein The lock unit (14) is arranged between the extending end of the distance measuring rod (5) and the hollow inner top wall of the plug-in rod (4), and the lock unit (14) can lock the distance measuring rod (5) in a vertical state.

9. The injection mold for a washing machine housing according to claim 8, wherein, The lock unit (14) comprises an elastic buffer unit (12), a first elastic check unit (16) is arranged on the elastic buffer unit (12), the extending end of the distance measuring rod (5) is fixedly connected with a protruding plate (15), and the first elastic check unit (16) is engaged and locked with the protruding plate (15) when the distance measuring rod (5) is in a vertical state.

10. The injection mold for a washing machine housing according to claim 9, wherein, The elastic buffering unit (12) comprises a mounting slot (12.1) opened on the hollow inner top wall of the plug-in rod (4), a lever plate (12.2) is arranged in the mounting slot (12.1), the middle part of the lever plate (12.2) is hinged to the mounting slot (12.1), one end of the lever plate (12.2) is mounted with the first elastic check unit (16), the other end of the lever plate (12.2) is connected with the slot bottom of the mounting slot (12.1) through a spring (12.3), when the core rod (10) contacts with the hollow inner top wall of the plug-in rod (4), the spring (12.3) is compressed and deformed, and the first elastic check unit (16) is engaged with the protruding plate (15) in the locked state.

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