Junction box forming mold and process

Abstract

The present invention belongs to the technical field of junction box production and manufacturing, and in particular relates to a junction box molding mold and process, wherein the equipment includes: a base, a rotating groove is provided in the middle part of which; a swing assembly is rotatably arranged at the upper end of the base; a crank rocker assembly for driving the swing assembly to rotate; an injection molding lifting assembly for placing the molding mold; an injection molding reciprocating mechanism, which is composed of an intermittent transmission assembly and a sliding assembly, the sliding assembly is used to cooperate with the injection molding reciprocating mechanism to complete the molding of the junction box, and the intermittent transmission assembly is used to adjust the molding depth and drive the sliding assembly to perform vertical reciprocating motion; through the intermittent transmission assembly, when the transmission wheel rotates in a uniform circular motion, two symmetrically arranged transmission cylindrical pins respectively undergo friction transmission with the positioning shaft and the rectangular top block in sequence, thereby converting the uniform rotation into reciprocating motion of the sliding assembly in the vertical direction, thereby achieving the fixed-depth injection molding requirement for molds with different injection molding depths.

Description

Technical Field

[0001] The present invention belongs to the technical field of junction box production and manufacturing, and in particular relates to a junction box forming die and process. Background Art

[0002] A junction box is an insulated box commonly used in household appliances, automotive circuit control, and other home appliance circuits. It typically consists of a cover, a body, wiring terminals, diodes, connecting wires, and connectors. The outer box is the primary component, and its housing must be highly resistant to aging and UV rays to withstand harsh environments. It must also offer a robust, waterproof seal and robust insulation to ensure proper function of the circuit terminals and busbars. Currently, junction box housings are typically manufactured using polymer composite thermoplastic injection molding.

[0003] The patent with publication number CN109760276A discloses a top cover forming mold for an automobile engine junction box, including a panel, a runner plate, a guide column, a front mold inclined slider mechanism, a front template, a front mold core, a rear mold core, a rear template, a return spring, an ejector pin, an ejector pin plate, a pressure plate, a middle support and a bottom plate. The present invention is fixedly connected to the front mold inclined slider mechanism through the front template, and the front mold inclined slider mechanism is located below the runner plate. The runner plate is respectively connected to the front template and the rear template through guide columns, and the runner plate is fixedly connected to the panel. The runner plate can allow external rubber to enter the front mold core of the front template and the rear mold core of the rear template through the runner plate to maintain the temperature of the external rubber in the runner plate stable and unobstructed, thereby improving the yield and reducing the product molding cycle.

[0004] When molding junction boxes, the aforementioned equipment uses a hot injection molding method where the mold is aligned before material is released. Because junction boxes are typically made of polymer composite materials such as PVC and polyethylene, which are inherently fire-resistant and heat-resistant after molding, the equipment lacks the necessary components to allow the upper and lower molds to separate automatically during mold opening. Furthermore, the equipment lacks the components to allow the upper mold to move out of its original injection molding position after mold opening to facilitate manual unloading of the product. When producing junction boxes of varying sizes, the aforementioned equipment cannot adjust the vertical dimensions of the molds to accommodate different sizes. Summary of the Invention

[0005] The purpose of the present invention is to provide a junction box forming mold and process to solve the problems raised in the above background technology. To achieve the above purpose, the following technical solution is provided: a junction box forming mold and process, wherein the equipment includes:

[0006] A base, wherein a rotation slot is provided in the middle portion;

[0007] A swing assembly is rotatably arranged at the upper end of the base, and a vertical wall is provided in the middle of the swing assembly for support;

[0008] A crank rocker assembly is provided at the middle portion of the lower end surface of the base and is used to drive the swing assembly to rotate;

[0009] The injection molding lifting assembly is fixedly arranged on the left end of the upper end surface of the base and is used for placing the molding mold;

[0010] The injection molding reciprocating mechanism is composed of an intermittent transmission component and a sliding component. The sliding component is used to cooperate with the injection molding reciprocating mechanism to complete the molding of the junction box. The intermittent transmission component is used to adjust the molding depth of the sliding component and drive the sliding component to perform vertical reciprocating motion.

[0011] In the present technical solution, when performing heat accommodation of the junction box, first replace the injection mold according to the model of the junction box to be injected, then adjust the vertical distance of the injection lifting assembly according to the size specifications of the injection molded part, and then place the hot injection molding material into the injection lifting assembly; adjust the transmission connection position of the intermittent transmission assembly and the sliding assembly according to the size of the junction box injection molded part to ensure that the sliding assembly can be engaged with the injection lifting assembly when it moves down to the bottom of the stroke; then start the intermittent transmission assembly, and the intermittent transmission assembly drives the sliding assembly to perform up and down reciprocating molding in the vertical position; when the sliding assembly has completed molding and is at the upper end of the stroke, start the crank rocker assembly again, and the crank rocker assembly drives the swing assembly and the injection reciprocating mechanism arranged on the swing assembly to rotate as a whole, so that the vertical positions of the sliding assembly and the injection lifting assembly are staggered, and finally the finished product that has been molded is removed from the upper end of the injection lifting assembly.

[0012] In any of the above technical solutions, further, the intermittent transmission assembly includes:

[0013] A horizontal cylindrical shaft is rotatably connected to the left end face of the vertical wall;

[0014] The transmission wheel is fixedly connected to the horizontal cylindrical shaft and rotates coaxially with the horizontal cylindrical shaft, and threaded holes are evenly opened on the end surface of the transmission wheel along the radial direction;

[0015] There are two transmission cylindrical pins, which are respectively threadedly connected to the threaded holes on the left end surface of the transmission wheel;

[0016] A positioning shaft is fixedly connected to the upper end of the left end surface of the vertical wall;

[0017] The composite transmission rocker is rotatably mounted on the positioning shaft and is used to link the intermittent transmission assembly and the sliding assembly to complete the die pressing action;

[0018] A second motor is fixedly connected to the lower end of the left end surface of the vertical wall and is used for power output of the intermittent transmission assembly;

[0019] A drive pulley, the power is connected to the right end of the second motor;

[0020] The belt is set between the transmission pulley and the compound transmission rocker arm, and is used for transmission and overload protection of the intermittent transmission component.

[0021] In this technical solution, the second motor is started, and the second motor drives the transmission pulley to rotate counterclockwise, and drives the transmission wheel to rotate through the belt. When the transmission wheel rotates, the two transmission cylindrical pins fixedly connected to the left end of the transmission wheel rotate continuously;

[0022] When the transmission cylindrical pin rotates counterclockwise from the horizontal position to the lower end, in this process: the lower end surface of the transmission cylindrical pin contacts the sliding component, and friction occurs with it, driving the sliding component to move downward in the vertical direction to realize the compression molding injection action;

[0023] When the transmission cylindrical pin rotates from the lowest position to a position close to the wedge block of the composite transmission rocker arm, as the transmission wheel continues to rotate counterclockwise, the transmission cylindrical pin gradually rotates upward and contacts the right wedge surface of the composite transmission rocker arm, generating friction transmission with the composite transmission rocker arm, driving the composite transmission rocker arm to swing around the positioning axis, causing its left end to swing upward. During the swinging process of the composite transmission rocker arm, the sliding assembly is driven to move upward in the vertical position, thereby realizing the demoulding movement of the sliding assembly;

[0024] As the transmission wheel rotates continuously, the sliding assembly is driven to move back and forth in the vertical direction. When the connection position of the transmission cylindrical pin and the transmission wheel is changed, the friction contact position between the transmission cylindrical pin and the sliding assembly is changed, thereby changing the vertical movement stroke of the sliding assembly, so that the movement stroke can be changed for injection molded parts of different sizes.

[0025] In any of the above technical solutions, further, the lower end of the compound transmission rocker is in the shape of an oblique wedge, and a transverse socket is opened in the horizontal direction at the middle of the right end of the compound transmission rocker, and slots are fixedly opened at the upper and lower surfaces of the socket for guiding; and the oblique wedge arranged at the lower end of the compound transmission rocker can be intermittently frictionally transmitted with the transmission cylindrical pin, so as to drive the compound transmission rocker to swing intermittently.

[0026] In this technical solution, by setting a slot at one end of the composite transmission rocker arm, the force line of the friction transmission with the sliding component can always be maintained in a constant vertical plane when the composite transmission rocker arm swings, thereby increasing the stability of the transmission between the intermittent transmission component and the sliding component.

[0027] In any of the above technical solutions, further, the sliding assembly includes:

[0028] A vertical sliding rod, vertically slidably connected to the upper end of the vertical wall;

[0029] A fixed block is fixedly connected to the lower end surface of the vertical sliding rod, and a transmission groove is fixedly opened inside the fixed block. A transverse transmission rod is fixed inside the transmission groove. The transverse transmission rod and the composite transmission rocker arm are frictionally driven, and a junction box injection mold is fixedly provided at the lower end of the fixed block;

[0030] The rectangular top block is fixedly connected to the lower ends of the left and right end surfaces of the fixed block. The upper end surface of the rectangular top block can generate friction transmission with the lower end surface of the transmission cylindrical pin to drive the fixed block to move vertically downward;

[0031] The tension spring is sleeved on the vertical sliding rod, and its upper and lower ends are respectively fixedly connected to the lower end surface of the load-bearing cylindrical disk and the upper end surface of the fixed block. The initial state is an unstretched state, which is used to assist the reset of the fixed block.

[0032] In this technical solution, when the transmission cylindrical pin rotates to the arc of one-quarter of the lower left end, the transmission cylindrical pin comes into contact with the rectangular top block, and as the transmission cylindrical pin rotates counterclockwise, the rectangular top block is driven to move downward, and the downward movement of the rectangular top block drives the entire sliding assembly to move up and down in the vertical direction; when the transmission cylindrical pin rotates to the upper end arc, it drives the composite transmission rocker arm to swing up and down. In the process of the composite transmission rocker arm swinging upward, the transverse transmission rod slidingly arranged in the middle of the composite transmission rocker arm is subjected to an upward force, thereby driving the entire sliding assembly to move upward; thereby completing the reciprocating motion of the sliding assembly in the vertical direction.

[0033] In any of the above technical solutions, further, a cylindrical slider is provided on the middle rotating sleeve of the transverse transmission rod, and the cylindrical slider is always slidably embedded in the slot of the compound transmission rocker arm, and frictionally transmitted with the middle slot of the compound transmission rocker arm, so as to improve the efficiency of the friction transmission of the transverse transmission rod and the compound transmission rocker arm and the stability during transmission.

[0034] In this technical solution, a cylindrical slider is sleeved on the middle part of the transverse transmission rod. When the composite transmission rocker arm is swinging, the composite transmission rocker arm drives the transverse transmission rod to move upward. At this time, the sliding friction on the transverse transmission rod is converted into rolling friction, thereby reducing the resistance on the swinging end of the entire composite transmission rocker arm when the transverse transmission rod moves upward, thereby increasing the service life of the composite transmission rocker arm.

[0035] In any of the above technical solutions, further, the injection molding lifting component includes:

[0036] The support leg is fixedly arranged at the left end of the upper end surface of the base, and a support plate is horizontally provided at the upper end thereof, and a threaded hole is opened in the middle of the support plate along the vertical direction, and cylindrical sliding holes are evenly opened on the upper end surface thereof;

[0037] There are four positioning slide rods, which are slidably connected to the cylindrical slide holes in the support plate;

[0038] The injection mold is fixedly connected to the upper end of the positioning slide bar by screws, and the injection mold can be press-molded with the injection mold connected to the lower end of the fixed block;

[0039] The threaded screw has a middle thread connected to the threaded hole in the middle of the support plate, and the upper end is rotatably connected to the lower end surface of the support plate, which is used to adjust the vertical position of the injection mold; and a rotating handle is fixed at the lower end of the threaded screw for manual rotation of the threaded screw.

[0040] In this technical solution, a positioning slide is provided to connect the injection mold to the threaded screw, so that the injection lifting assembly changes the vertical position of the injection mold through threaded transmission, thereby achieving autonomous adjustment of the injection mold end.

[0041] In any of the above technical solutions, further, the swing assembly also includes:

[0042] The load-bearing cylindrical disc is connected to the rotating groove in horizontal rotation to increase the stability of the swing assembly's rotation and reduce the vertical force on the swing assembly when the injection molding reciprocating mechanism is vertically pressing the mold;

[0043] The support arm is fixedly connected to the middle of the load-bearing cylindrical disk and rotates coaxially with the load-bearing cylindrical disk. A vertical wall is fixedly provided at the middle of the support arm.

[0044] In this technical solution, the load-bearing cylindrical disk is provided to increase the rotation stability of the support arm when it rotates, and reduce the force acting on the support arm in the vertical axial direction when the injection molding reciprocating mechanism is vertically pressed.

[0045] In any of the above technical solutions, further, the crank rocker assembly includes:

[0046] A swing rod is fixedly connected to the lower end surface of the support arm, and a connecting rod is hingedly provided at the extended end of the swing rod;

[0047] A transmission motor is fixedly connected to the middle portion of the lower end surface of the base;

[0048] The rotating disk is fixedly connected to the rotating shaft at the lower end of the transmission motor, and a hinge pin is fixedly provided at its lower end surface. The hinge pin is hinged to the right end of the connecting rod to drive the connecting rod and the rocker arm to rotate intermittently.

[0049] In this technical solution, the transmission motor is started, and the transmission motor drives the hinge pin and the rotating disk to swing as a whole. At this time, the crank rocker mechanism is composed of the hinge pin, the connecting rod, the rocker arm and the base, and the rocker arm acts as the rocker arm in the four-bar mechanism, thereby realizing the reciprocating swing of the rocker arm, so that the injection molding reciprocating mechanism as a whole and the injection molding lifting assembly are offset in the vertical direction when unloading the injection molding lifting assembly, which facilitates the unloading of the injection molded finished parts.

[0050] A method for using a junction box forming mold:

[0051] Step 1: Replace the mold according to the type of junction box to be molded, then adjust the vertical distance of the injection molding lifting assembly according to the injection molding conditions, and place the hot injection molding material on the injection molding lifting assembly;

[0052] Step 2: Adjust the connection position of the drive cylindrical pin and the drive wheel according to the size of the junction box injection molded part to ensure that it is exactly engaged with the injection molded lifting component when the sliding component moves down to the bottom of its stroke;

[0053] Step 3: Start the intermittent transmission component, which drives the sliding component to perform up and down pressing in the vertical position;

[0054] Step 4: When the sliding assembly is completed and at the upper end of the stroke, the crank rocker assembly is started, and the crank rocker assembly drives the crank rocker assembly and the sliding assembly to rotate as a whole, and then the finished product that has been molded is removed from the upper end of the injection lifting assembly.

[0055] The beneficial effects of the present invention are as follows: when hot injection molding is performed on junction boxes of different injection molding sizes, an intermittent transmission component is provided, and a transmission structure combining a flywheel and a rocker arm is adopted. When the transmission wheel and the transmission cylindrical pin are provided, when the transmission wheel rotates in a uniform circular motion, two symmetrically provided transmission cylindrical pins respectively undergo friction transmission with the positioning shaft and the rectangular top block in turn, driving the rectangular top block downward in turn, and when the transmission cylindrical pin rotates to the upper end, the positioning shaft is moved upward by the lever principle, driving the horizontal transmission rod to move upward, thereby converting the uniform rotation of the intermittent transmission component into a reciprocating motion in the vertical direction of the sliding component, thereby achieving the injection molding requirement of a fixed depth for molds of different injection molding depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0057] Figure 2 Schematic diagram of the injection molding reciprocating mechanism of the present invention;

[0058] Figure 3 yes Figure 2 Schematic diagram of the AA position in the middle;

[0059] Figure 4 It is a parts diagram of the transmission wheel in the present invention;

[0060] Figure 5 is a three-dimensional schematic diagram of the composite transmission rocker in the present invention;

[0061] Figure 6 This invention Figure 1 An enlarged schematic diagram of the middle crank rocker assembly;

[0062] Figure 7 yes Figure 6 Schematic diagram of the middle BB.

[0063] The reference numerals in the figure are: 100, base; 101, rotating groove; 200, swing assembly; 201, load-bearing cylindrical disk; 202, support arm; 203, vertical wall; 300, crank rocker assembly; 301, rocker; 302, connecting rod; 303, transmission motor; 304, rotating disk; 305, hinge pin; 400, injection molding lifting assembly; 401, support leg; 402, support plate; 403, positioning slide; 404, injection mold; 405, threaded wire Lever; 500, injection molding reciprocating mechanism; 600, intermittent transmission assembly; 601, horizontal cylindrical shaft; 602, transmission wheel; 603, transmission cylindrical pin; 604, positioning shaft; 605, compound transmission rocker; 606, second motor; 607, transmission pulley; 608, belt; 700, sliding assembly; 701, vertical sliding rod; 702, fixed block; 703, transmission groove; 704, horizontal transmission rod; 705, rectangular top block; 706, tension spring. DETAILED DESCRIPTION

[0064] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0065] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0066] like Figure 1 As shown, this embodiment provides a junction box forming mold and process, wherein the equipment includes:

[0067] The base 100 has a rotation slot 101 defined in the middle thereof;

[0068] The swing assembly 200 is rotatably mounted on the upper end of the base 100 , and a vertical wall 203 is provided in the middle of the swing assembly 200 for support;

[0069] The crank rocker assembly 300 is provided at the middle portion of the lower end surface of the base 100 and is used to drive the swing assembly 200 to rotate;

[0070] The injection molding lifting assembly 400 is fixedly arranged on the left end of the upper end surface of the base 100 and is used to place the molding mold;

[0071] The injection molding reciprocating mechanism 500 is composed of an intermittent transmission component 600 and a sliding component 700. The sliding component 700 is used to cooperate with the injection molding reciprocating mechanism 500 to complete the molding of the junction box. The intermittent transmission component 600 is used to adjust the molding depth of the sliding component 700 and drive the sliding component 700 to perform vertical reciprocating motion.

[0072] In this technical solution, when performing heat accommodation of the junction box, first replace the injection mold according to the model of the junction box to be injected, then adjust the vertical distance of the injection molding lifting assembly 400 according to the size specifications of the injection molded part, and then put the hot injection molding material into the injection molding lifting assembly 400; adjust the transmission connection position of the intermittent transmission assembly 600 and the sliding assembly 700 according to the size of the junction box injection molded part to ensure that the sliding assembly 700 can be engaged with the injection molding lifting assembly 400 when it moves down to the bottom of the stroke; then start the intermittent transmission assembly 60 0, the intermittent transmission assembly 600 drives the sliding assembly 700 to perform up and down molding in a vertical position; when the sliding assembly 700 has completed molding and is at the upper end of its stroke, the crank rocker assembly 300 is started again. At this time, the crank rocker assembly 300 drives the swing assembly 200 and the injection reciprocating mechanism 500 provided on the swing assembly 200 to rotate as a whole, so that the vertical positions of the sliding assembly 700 and the injection molding lifting assembly 400 are staggered, and finally the finished product that has been molded is removed from the upper end of the injection molding lifting assembly 400.

[0073] like Figure 2 、 3 4. Specifically, the intermittent transmission assembly 600 includes:

[0074] A horizontal cylindrical shaft 601 is rotatably connected to the left end surface of the vertical wall 203;

[0075] The transmission wheel 602 is fixedly connected to the horizontal cylindrical shaft 601 and rotates coaxially with the horizontal cylindrical shaft 601. The end surface of the transmission wheel 602 is evenly provided with threaded holes along the radial direction.

[0076] There are two transmission cylindrical pins 603, which are respectively threadedly connected to the threaded holes at the left end surface of the transmission wheel 602;

[0077] The positioning shaft 604 is fixedly connected to the upper end of the left end surface of the vertical wall 203;

[0078] The composite transmission rocker 605 is rotatably mounted on the positioning shaft 604 and is used to link the intermittent transmission assembly 600 and the sliding assembly 700 to complete the molding operation;

[0079] The second motor 606 is fixedly connected to the lower end of the left end surface of the vertical wall 203 and is used for power output of the intermittent transmission assembly 600;

[0080] The transmission pulley 607 is powered and connected to the right end of the second motor 606;

[0081] The belt 608 is mounted between the transmission pulley 607 and the composite transmission rocker 605 and is used for transmission and overload protection of the intermittent transmission assembly 600 .

[0082] In this technical solution, the second motor 606 is started, and the second motor 606 drives the transmission pulley 607 to rotate counterclockwise, and drives the transmission wheel 602 to rotate through the belt 608. When the transmission wheel 602 rotates, the two transmission cylindrical pins 603 fixedly connected to the left end of the transmission wheel 602 continuously rotate;

[0083] When the transmission cylindrical pin 603 rotates counterclockwise from the horizontal position to the lower end, the lower end surface of the transmission cylindrical pin 603 contacts the sliding assembly 700, and friction occurs therewith, driving the sliding assembly 700 to move downward in the vertical direction to realize the compression molding injection action;

[0084] When the transmission cylindrical pin 603 rotates from the lowest end position to the position close to the wedge block of the compound transmission rocker 605, as the transmission wheel 602 continues to rotate counterclockwise, the transmission cylindrical pin 603 gradually rotates to the upper side and contacts the right wedge surface of the compound transmission rocker 605, generating friction transmission with the compound transmission rocker 605, driving the compound transmission rocker 605 to swing around the positioning shaft 604, causing its left end to swing upward. During the swinging process of the compound transmission rocker 605, the sliding assembly 700 is driven to move upward in the vertical position, thereby realizing the demoulding movement of the sliding assembly 700;

[0085] As the transmission wheel 602 continuously rotates, the sliding assembly 700 is driven to move back and forth in the vertical direction. When the connection position of the transmission cylindrical pin 603 and the transmission wheel 602 is changed, the friction contact position between the transmission cylindrical pin 603 and the sliding assembly 700 is changed, thereby changing the vertical movement stroke of the sliding assembly 700, so that the movement stroke can be changed for injection molded parts of different sizes.

[0086] like Figure 5As shown, the lower end of the compound transmission rocker 605 is in the shape of an oblique wedge, and a horizontal socket is provided in the middle of the right end of the compound transmission rocker 605 in the horizontal direction, and slots are fixedly provided on the upper and lower surfaces of the socket for guiding; and the oblique wedge provided at the lower end of the compound transmission rocker 605 can intermittently frictionally transmit with the transmission cylindrical pin 603, so as to drive the compound transmission rocker 605 to swing intermittently.

[0087] In this technical solution, by setting a slot at one end of the compound transmission rocker 605, the force line of the friction transmission with the sliding component 700 can always be maintained in a constant vertical plane when the compound transmission rocker 605 swings, thereby increasing the stability of the intermittent transmission component 600 and the sliding component 700 during transmission.

[0088] In a preferred embodiment of the present invention:

[0089] like Figure 2 、 3 As shown, specifically, the sliding assembly 700 includes:

[0090] A vertical sliding rod 701 is vertically slidably connected to the upper end of the vertical wall 203;

[0091] The fixed block 702 is fixedly connected to the lower end surface of the vertical sliding rod 701, and a transmission groove 703 is fixedly provided inside the fixed block 702. A transverse transmission rod 704 is fixed inside the transmission groove 703. The transverse transmission rod 704 and the composite transmission rocker 605 are frictionally driven. The lower end of the fixed block 702 is fixedly provided with a junction box injection mold;

[0092] The rectangular top block 705 is fixedly connected to the lower ends of the left and right end surfaces of the fixed block 702. The upper end surface of the rectangular top block 705 can generate friction transmission with the lower end surface of the transmission cylindrical pin 603 to drive the fixed block 702 to move vertically downward;

[0093] The tension spring 706 is sleeved on the vertical sliding rod 701, and its upper and lower ends are fixedly connected to the lower end surface of the load-bearing cylindrical disk 201 and the upper end surface of the fixed block 702 respectively. The initial state is an unstretched state, which is used to assist the reset of the fixed block 702.

[0094] In the present technical solution, when the transmission cylindrical pin 603 rotates to the arc of one quarter of the lower left end, the transmission cylindrical pin 603 comes into contact with the rectangular top block 705, and as the transmission cylindrical pin 603 rotates counterclockwise, the rectangular top block 705 is driven to move downward, and the downward movement of the rectangular top block 705 drives the sliding assembly 700 as a whole to move up and down in the vertical direction; when the transmission cylindrical pin 603 rotates to the arc of the upper end, it drives the composite transmission rocker 605 to swing up and down. In the process of the composite transmission rocker 605 swinging upward, the horizontal transmission rod 704 slidingly arranged in the middle of the composite transmission rocker 605 is subjected to an upward force, thereby driving the sliding assembly 700 to move upward as a whole; thereby completing the reciprocating motion of the sliding assembly 700 in the vertical direction.

[0095] like Figure 5 As shown, preferably, a cylindrical slider is rotatably sleeved on the middle part of the transverse transmission rod 704, and the cylindrical slider is always slidably embedded in the slot of the compound transmission rocker 605, and frictionally transmitted with the middle slot of the compound transmission rocker 605, so as to improve the efficiency of the friction transmission between the transverse transmission rod 704 and the compound transmission rocker 605 and the stability during transmission.

[0096] In the present technical solution, a cylindrical slider is sleeved on the middle part of the transverse transmission rod 704. When the compound transmission rocker arm 605 swings, the compound transmission rocker arm 605 drives the transverse transmission rod 704 to move upward. At this time, the sliding friction on the transverse transmission rod 704 is converted into rolling friction, thereby reducing the resistance on the swinging end of the entire compound transmission rocker arm 605 when the transverse transmission rod 704 moves upward, thereby increasing the service life of the compound transmission rocker arm 605.

[0097] In a preferred embodiment of the present invention:

[0098] like Figure 1 As shown, specifically, the injection molding lifting assembly 400 includes:

[0099] The support leg 401 is fixedly mounted on the left end of the upper end surface of the base 100, and a support plate 402 is horizontally provided at the upper end thereof. A threaded hole is provided in the middle of the support plate 402 in the vertical direction, and cylindrical sliding holes are uniformly provided on the upper end surface thereof;

[0100] There are four positioning slide rods 403, which are slidably connected to the cylindrical slide holes in the support plate 402;

[0101] The injection mold 404 is fixedly connected to the upper end of the positioning slide 403 by screws. The injection mold 404 can be used for compression molding with the injection mold connected to the lower end of the fixed block 702;

[0102] The threaded screw 405 is threadedly connected to the threaded hole in the middle of the support plate 402 in the middle, and the upper end is rotatably connected to the lower end surface of the support plate 402, which is used to adjust the vertical position of the injection mold 404; and a rotating handle is fixed at the lower end of the threaded screw 405 for manual rotation of the threaded screw 405.

[0103] In this technical solution, the positioning slide rod 403 is set to connect the injection mold 404 to the threaded screw 405, so that the injection lifting assembly 400 changes the vertical position of the injection mold 404 through threaded transmission, thereby achieving autonomous adjustment of the injection mold end.

[0104] In a preferred embodiment of the present invention:

[0105] like Figure 1 As shown, specifically, the swing assembly 200 further includes:

[0106] The load-bearing cylindrical disk 201 is horizontally rotatably connected to the rotating groove 101 to increase the rotation stability of the swing assembly 200 and reduce the vertical force applied to the swing assembly 200 when the injection reciprocating mechanism 500 is vertically pressing the mold;

[0107] The support arm 202 is fixedly connected to the middle of the load-bearing cylindrical disk 201 and rotates coaxially with the load-bearing cylindrical disk 201 . A vertical wall 203 is fixedly provided at the middle of the support arm 202 .

[0108] In this technical solution, the load-bearing cylindrical disk 201 is provided to increase the rotation stability of the support arm 202 when it rotates, and reduce the force acting on the support arm 202 in the vertical axial direction when the injection molding reciprocating mechanism 500 is vertically pressed.

[0109] In a preferred embodiment of the present invention:

[0110] like Figure 6 、 7 As shown, specifically, the crank rocker assembly 300 includes:

[0111] The swing rod 301 is fixedly connected to the lower end surface of the support arm 202, and the extended end of the swing rod 301 is hingedly provided with a connecting rod 302;

[0112] The transmission motor 303 is fixedly connected to the middle portion of the lower end surface of the base 100;

[0113] The rotating disk 304 is fixedly connected to the lower end shaft of the transmission motor 303, and a hinge pin 305 is fixedly provided on its lower end surface. The hinge pin 305 is hinged to the right end of the connecting rod 302 to drive the connecting rod 302 and the rocker arm 301 to rotate intermittently.

[0114] In the present technical solution, the transmission motor 303 is started, and the transmission motor 303 drives the hinge pin 305 and the rotating disk 304 to swing as a whole. At this time, the hinge pin 305, the connecting rod 302, the rocker arm 301 and the base 100 form a crank rocker mechanism, and the rocker arm 301 acts as the rocker arm in the four-bar mechanism, thereby realizing the reciprocating swing of the rocker arm 301, so that the injection molding reciprocating mechanism 500 as a whole and the injection molding lifting assembly 400 are offset in the vertical direction when the injection molding lifting assembly 400 is unloaded, which facilitates the unloading of the injection molded finished parts.

[0115] A method for using a junction box forming mold:

[0116] Step 1: Replace the mold according to the model of the junction box to be molded, then adjust the vertical distance of the injection molding lifting assembly 400 according to the injection molding conditions, and place the hot injection molding material on the injection molding lifting assembly 400;

[0117] Step 2: Adjust the connection position of the transmission cylindrical pin 603 and the transmission wheel 602 according to the size of the junction box injection molded part to ensure that the sliding assembly 700 is exactly engaged with the injection molding lifting assembly 400 when it moves down to the bottom of the stroke;

[0118] Step 3: Start the intermittent transmission assembly 600, which drives the sliding assembly 700 to perform up and down pressing in a vertical position;

[0119] Step 4: When the sliding assembly 700 is completed and at the upper end of the stroke, the crank rocker assembly 300 is started, and the crank rocker assembly 300 drives the crank rocker assembly 300 and the sliding assembly 700 to rotate as a whole, and then the finished product that has been completed by molding is removed from the upper end of the injection lifting assembly 400.

[0120] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A junction box forming mold, characterized in that: include: A base (100) having a rotation groove (101) formed in the middle thereof; A swing assembly (200) is rotatably arranged at the upper end of the base (100), and a vertical wall (203) is provided at the middle of the swing assembly (200) for support; A crank rocker assembly (300) is provided at the middle portion of the lower end surface of the base (100) and is used to drive the swing assembly (200) to rotate; An injection molding lifting assembly (400) is fixedly arranged on the left end of the upper end surface of the base (100) and is used for placing the molding mold; An injection molding reciprocating mechanism (500) is composed of an intermittent transmission assembly (600) and a sliding assembly (700), wherein the sliding assembly (700) is used to cooperate with the injection molding reciprocating mechanism (500) to complete the die pressing of the junction box, and the intermittent transmission assembly (600) is used to adjust the die pressing depth of the sliding assembly (700) and drive the sliding assembly (700) to perform vertical reciprocating motion; The intermittent transmission assembly (600) comprises: a horizontal cylindrical shaft (601) rotatably connected to the left end surface of the vertical wall (203); A transmission wheel (602) is fixedly connected to the horizontal cylindrical shaft (601) and rotates coaxially with the horizontal cylindrical shaft (601), and threaded holes are uniformly opened on the end surface of the transmission wheel (602) along the radial direction; There are two transmission cylindrical pins (603), which are respectively threadedly connected to the threaded holes at the left end surface of the transmission wheel (602); A positioning shaft (604) is fixedly connected to the upper end of the left end surface of the vertical wall (203); A composite transmission rocker (605) is rotatably mounted on the positioning shaft (604) and is used to link the intermittent transmission assembly (600) and the sliding assembly (700) to complete the molding operation; A second motor (606) is fixedly connected to the lower end of the left end surface of the vertical wall (203) and is used for power output of the intermittent transmission assembly (600); A transmission pulley (607) is connected to the right end of the second motor (606); A belt (608) is sleeved between the transmission pulley (607) and the composite transmission rocker (605) for transmission and overload protection of the intermittent transmission assembly (600); The lower end of the composite transmission rocker (605) is in the shape of an oblique wedge, and a transverse socket is provided in the horizontal direction at the middle of the right end of the composite transmission rocker (605), and slots are fixedly provided on the upper and lower sides of the socket for guiding; and the oblique wedge provided at the lower end of the composite transmission rocker (605) can intermittently frictionally transmit with the transmission cylindrical pin (603), so as to drive the composite transmission rocker (605) to intermittently swing; The sliding assembly (700) comprises: a vertical sliding rod (701) vertically slidably connected to the upper end of the vertical wall (203); A fixed block (702) is fixedly connected to the lower end surface of the vertical sliding rod (701), and a transmission groove (703) is fixedly provided inside the fixed block (702), a transverse transmission rod (704) is fixedly provided inside the transmission groove (703), and the transverse transmission rod (704) and the composite transmission rocker (605) are frictionally driven, and a junction box injection mold is fixedly provided at the lower end of the fixed block (702); A rectangular top block (705) is fixedly connected to the lower ends of the left and right end surfaces of the fixed block (702), and the upper end surface of the rectangular top block (705) can generate friction transmission with the lower end surface of the transmission cylindrical pin (603) to drive the fixed block (702) to move vertically downward; The tension spring (706) is sleeved on the vertical sliding rod (701), and its upper and lower ends are respectively fixedly connected to the lower end surface of the load-bearing cylindrical disk (201) and the upper end surface of the fixed block (702). The initial state is an unstretched state, and is used to assist the reset of the fixed block (702).

2. A junction box forming mold according to claim 1, characterized in that: A cylindrical slider is rotatably sleeved on the middle portion of the transverse transmission rod (704), and the cylindrical slider is always slidably embedded in the slot of the composite transmission rocker (605), and frictionally transmits the friction transmission with the middle slot of the composite transmission rocker (605), thereby improving the efficiency of the friction transmission between the transverse transmission rod (704) and the composite transmission rocker (605) and the stability during transmission.

3. The junction box forming mold according to claim 1, characterized in that: The injection molding lifting assembly (400) comprises: a support leg (401) fixedly arranged at the left end of the upper end surface of the base (100), a support plate (402) being horizontally provided at the upper end thereof, a threaded hole being provided in the middle of the support plate (402) in the vertical direction, and cylindrical sliding holes being uniformly provided at the upper end surface thereof; There are four positioning slide rods (403), which are respectively slidably connected to the cylindrical slide holes in the support plate (402); An injection mold (404) is fixedly connected to the upper end of the positioning slide bar (403) by screws, and the injection mold (404) can be used for compression molding with the injection mold connected to the lower end of the fixed block (702); A threaded screw (405) is threadedly connected at its middle portion to a threaded hole in the middle portion of the support plate (402), and its upper end is rotatably connected to the lower end surface of the support plate (402) for adjusting the vertical position of the injection mold (404); and a rotating handle is fixedly provided at the lower end of the threaded screw (405) for manual rotation of the threaded screw (405).

4. The junction box forming mold according to claim 1, characterized in that: The swing assembly (200) further comprises: a load-bearing cylindrical disc (201) horizontally rotatably connected in the rotation groove (101) for increasing the rotation stability of the swing assembly (200) and reducing the vertical force applied to the swing assembly (200) when the injection molding reciprocating mechanism (500) is vertically pressing the mold; The support arm (202) is fixedly connected to the middle of the load-bearing cylindrical disk (201) and rotates coaxially with the load-bearing cylindrical disk (201), and the vertical wall (203) is fixedly provided at the middle of the support arm (202).

5. The junction box forming mold according to claim 4, characterized in that: The crank rocker assembly (300) comprises: a rocker (301) fixedly connected to the lower end surface of the support arm (202), and a connecting rod (302) is hingedly provided at the extended end of the rocker (301); A transmission motor (303) is fixedly connected to the middle portion of the lower end surface of the base (100); The rotating disk (304) is fixedly connected to the rotating shaft at the lower end of the transmission motor (303), and a hinge pin (305) is fixedly provided at the lower end surface of the rotating disk. The hinge pin (305) is hinged to the right end of the connecting rod (302) and is used to drive the connecting rod (302) and the rocker arm (301) to rotate intermittently.

6. A process for forming a junction box mold according to any one of claims 1 to 5, characterized in that: Step 1: Replace the mold according to the model of the junction box to be molded, then adjust the vertical distance of the injection molding lifting component (400) according to the injection molding conditions, and place the hot injection molding material on the injection molding lifting component (400); Step 2: Adjust the connection position of the transmission cylindrical pin (603) and the transmission wheel (602) according to the size of the junction box injection molded part to ensure that the sliding component (700) is exactly engaged with the injection molding lifting component (400) when it moves down to the bottom of the stroke; Step 3: Start the intermittent transmission component (600), which drives the sliding component (700) to perform up and down pressing in a vertical position; Step 4: When the sliding assembly (700) is completed and at the upper end of the stroke, the crank rocker assembly (300) is started, and the crank rocker assembly (300) drives the crank rocker assembly (300) and the sliding assembly (700) to rotate as a whole, and then the finished product that has been completed by the molding is removed from the upper end of the injection molding lifting assembly (400).

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