Rotational molding mold provided with simple mold frame

Abstract

The utility model discloses a rotational molding mold provided with a simple mold frame, and relates to the field of rotational molding process machining, the rotational molding mold comprises an upper mold shell, a lower mold shell, a locking assembly and the mold frame, the edge of the upper mold shell and the edge of the lower mold shell are each provided with a flange used for connection, and the locking assembly is installed on the flanges and used for fixing the two flanges; the mold frame comprises an upper mold frame and a lower mold frame, the upper mold frame comprises an upper plane frame and a plurality of vertical frames, the vertical frames are arranged along the contour of the upper mold shell, one end of each vertical frame is fixed on the plane frame, and the other end of each vertical frame is fixed on a flange of the upper mold shell; the lower die frame comprises a lower plane frame and a plurality of vertical frames, the vertical frames are arranged along the outline of the lower die shell, one end of each vertical frame is fixed to the lower plane frame, and the other end of each vertical frame is fixed to the flange of the lower die shell. The upper mold frame and the lower mold frame are respectively fixed on the flanges of the upper mold shell and the lower mold shell through the screws, and only the upper mold shell and the lower mold shell need to be assembled and disassembled, so that the process of repeatedly assembling the mold frames is omitted, and the overall assembling efficiency of the rotational molding mold is improved.

Description

Technical Field

[0001] The present invention relates to the field of rotational molding technology, and more particularly to a rotational molding mold equipped with a simple mold frame. Background Art

[0002] Rotomolding, also known as rotational molding, rotational molding, or rotational molding, is a method for hollow-molding thermoplastics. The plastic material is first placed in a mold, which is then continuously rotated along two perpendicular axes and heated. Under the influence of gravity and heat, the plastic material in the mold gradually and evenly spreads, melts, and adheres to the entire surface of the mold cavity, forming the desired shape. The final product is then cooled and fixed. Rotomolding molds are primarily secured using quick-release latches.

[0003] In the related art, a mold frame is required to fix the rotomolding mold while the mold is continuously rotating and heating. The mold frame includes an upper mold frame and a lower mold frame. The lower mold frame is usually a frame made of metal profiles that corresponds to the contour of the rotomolding mold. The rotomolding mold is placed in the lower mold frame, and then the upper mold frame is covered to press the rotomolding mold tightly. Multiple quick locks are set along the circumference between the upper and lower mold frames, and the quick locks are used to fix the upper and lower mold frames. The mold frame is set to correspond to the mold contour. Different mold contours will cause the circumference of the mold frame to be undulating and winding. The operator needs to spend a long time to operate the quick locks around the mold frame. The mold frame assembly is very cumbersome and time-consuming, affecting the efficiency of rotomolding production.

[0004] In view of the above-mentioned related technologies, in order to make the assembly of the rotational molding mold more efficient, the applicant designed a rotational molding mold equipped with a simple mold frame. Utility Model Content

[0005] In order to improve the assembly efficiency of rotational molding molds and mold frames, the present application provides a rotational molding mold equipped with a simple mold frame, which has the effect of saving time and being convenient in mold assembly operation.

[0006] The present application provides a rotational molding mold equipped with a simple mold frame adopts the following technical solution:

[0007] A rotational molding mold equipped with a simple mold frame includes an upper mold shell, a lower mold shell, a locking assembly and a mold frame, and is characterized in that: the edges of the upper mold shell and the lower mold shell are both provided with flanges for connection, and the locking assembly is installed on the flanges and is used to fix the two flanges; the mold frame includes an upper mold frame and a lower mold frame, the upper mold frame includes an upper plane frame and a vertical frame, and multiple vertical frames are arranged along the outline of the upper mold shell, one end of the vertical frame is fixed to the upper plane frame, and the other end of the vertical frame is fixed to the flange of the upper mold shell; the lower mold frame includes a lower plane frame and a vertical frame, and multiple vertical frames are arranged along the outline of the lower mold shell, one end of the vertical frame is fixed to the lower plane frame, and the other end of the vertical frame is fixed to the flange of the lower mold shell.

[0008] By adopting the above technical solution, flanges are set on the edges of the upper mold shell and the lower mold shell to facilitate the fixed connection between the upper mold shell and the lower mold shell. The locking assembly can also be directly installed on the flange, and there is no need to reserve installation space for the locking assembly on the mold frame, which helps to reduce the volume of the mold frame; the upper mold frame and the lower mold frame are both composed of a plane frame and a vertical frame. The vertical frame corresponding to the contour setting of the upper mold shell and the lower mold shell helps to reduce the volume of the mold frame. The vertical frame is fixedly connected to the flange to fix the upper mold frame and the lower mold frame on the upper mold shell and the lower mold shell respectively. The upper mold frame and the lower mold frame move with the upper mold shell and the lower mold shell respectively, eliminating the process of repeated assembly of the mold frame and improving the overall assembly efficiency of the rotational molding mold.

[0009] Optionally, the locking assembly includes a sleeve, a sliding rod and an elastic member; the sleeve is fixed on the flange of the upper mold shell, and the sleeve is located on the side of the flange away from the lower mold shell; the sliding rod is slidably installed in the sleeve, and a T-shaped clip joint is provided at one end of the sliding rod close to the flange, and the T-shaped clip joint is larger than the end profile of the sleeve, and the elastic member is provided between the sliding rod and the sleeve to make the T-shaped clip joint press against the end of the sleeve, and the end of the sliding rod away from the T-shaped clip joint extends from the other end of the sleeve; a straight through hole is provided on the flange corresponding to the T-shaped clip joint.

[0010] By adopting the above technical solution, in the initial state, the elastic member supports the sliding rod, the T-shaped clamping joint is clamped at the end of the sleeve and located in the through-hole of the upper mold shell flange, and the upper and lower mold shells are in an unfixed state. When the upper and lower mold shells need to be fixed, the sliding rod is first pressed downward, and the T-shaped clamping joint passes through the straight through-holes on the two flanges. The sliding rod is rotated 90 degrees, and the T-shaped clamping joint and the straight T through-hole form a cross structure, so that the T-shaped clamping joint cannot pass through the straight through-hole. The sliding rod is released, and the sliding rod rises under the action of the elastic member. The sleeve cooperates with the T-shaped clamping joint to clamp and fix the two flanges, thereby fixing the upper and lower mold shells. By pressing and rotating the sliding rod, the flanges can be quickly fixed, which is convenient and quick to operate, helping to improve the assembly efficiency of the mold.

[0011] Optionally, the locking assembly further includes a handle, which is fixed on the sliding rod; a guiding bevel which gradually rises in a clockwise direction along the circumference is provided on the top of the sleeve; when the T-shaped clamping joint is clamped with the bottom of the flange of the lower mold shell, the handle abuts against the end face of the sleeve away from the lower mold shell.

[0012] By adopting the above technical solution, a handle is provided in the locking assembly, and the handle is fixedly connected to the sliding rod. The worker can conveniently control the movement or rotation of the sliding rod through the handle; a guiding bevel is provided on the top of the sleeve, which gradually rises in a clockwise direction along the circumference. When the handle is rotated clockwise, the handle will rise along the bevel, and the rising handle will synchronously drive the sliding rod and the T-shaped clamping joint to rise; when the handle rises to the highest point of the bevel, that is, when the handle is attached to the end face of the sleeve away from the lower mold shell, the T-shaped clamping joint rises to the bottom of the flange of the lower mold shell and clamps, and the two flanges and the sleeve are clamped and fixed between the handle and the T-shaped clamping joint to complete the fixation of the upper mold shell and the lower mold shell.

[0013] Optionally, a socket is provided through one end of the handle, a connecting column that cooperates with the socket socket is provided at the end of the sliding rod away from the T-shaped card joint, a second screw hole connected to the socket is provided through the side wall of the handle, and a screw is installed in the second screw hole to tighten the connecting column; a threaded column is provided on the connecting column away from the end of the sliding rod, a nut is screwed on the threaded column, and the nut abuts the handle.

[0014] By adopting the above technical solution, a socket is opened at one end of the handle to sleeve the sliding rod, and a second screw hole is opened through the side wall of the handle at a position corresponding to the socket, and a screw is used to pass through the second screw hole to abut the connecting column to fix the handle and the connecting column, thereby fixing the axial position of the handle; the connecting column and the handle are plugged together to form a reliable circumferential fixation, so that the handle drives the connecting column and the sliding rod to rotate; the nut is screwed on the threaded column, and the nut abuts the handle. The nut can limit the height of the handle to ensure that the axial position of the handle will not change, thereby ensuring that the handle and the T-shaped clamping joint clamp the two flanges tightly.

[0015] Optionally, the elastic member is a spring, and the spring is sleeved on the sliding rod; a fixing ring is fixed on the sliding rod, and the elastic member is tightly arranged between the fixing ring and the bottom of the sleeve.

[0016] By adopting the above technical solution, a fixing ring is fixedly provided on the sliding rod, and an elastic member is tightly arranged between the fixing ring and the bottom of the sleeve. When there is no external force acting on the sliding rod, the elastic member can abut the fixing ring to make the sliding rod rise, so that the T-shaped clamping joint abuts against the end of the sleeve; a spring is selected as the elastic member, and the spring is horizontally sleeved on the sliding rod along the length direction of the sliding rod. The spring can maintain a stable shape and performance under constantly changing heavy loads and deformations. As an elastic member, it is highly reliable and durable.

[0017] Optionally, the fixing ring is slidingly sleeved on the sliding rod, and a first screw hole is penetrated through the peripheral side wall of the fixing ring. A screw is installed in the first screw hole, and the screw abuts against the side wall of the sliding rod.

[0018] By adopting the above technical solution, workers can loosen the screws to slide and adjust the position of the fixing ring, thereby adjusting the compression length of the elastic part to change the force of the elastic part. The force of the elastic part can be adjusted according to different usage scenarios and needs.

[0019] Optionally, one end of the vertical frame is fixed to the planar frame, and a connecting plate is fixed to the other end of the vertical frame, and the connecting plate is fixed to the flange with screws.

[0020] By adopting the above technical solution, one end of the vertical frame is welded to the plane frame and a connecting plate is set at the other end. The connecting plate is fixed to the flange with screws. The mold frame can be detachably fixed to the flange. The mold frame can be used for molds with similar flange contours, which can improve the utilization rate of the mold frame.

[0021] Optionally, it further includes a lifting ear, which is fixed to a side of the planar frame of the upper mold frame away from the upper mold shell.

[0022] By adopting the above technical solution, a lifting lug is provided on the side of the plane frame of the upper mold frame away from the upper mold shell, so as to facilitate the lifting and transportation of the entire rotational molding mold.

[0023] Optionally, an abutment plate is provided on the abutment surface between the lower mold shell flange and the T-shaped clamping joint. When the T-shaped clamping joint and the abutment plate are clamped, the handle abuts against the end surface of the sleeve away from the lower mold shell.

[0024] By adopting the above technical solution, an abutment plate is set on the flange of the lower mold shell to abut against the T-shaped clip joint, avoiding direct contact between the flange and the T-shaped clip joint, and preventing wear of the flange; the abutment plate can be made of high-strength metal that is not easy to wear, ensuring a longer service life.

[0025] Optionally, a fixing plate is provided on the flange side of the sleeve close to the upper mold shell, and the fixing plate is fixed to the flange with screws.

[0026] By adopting the above technical solution, a fixing plate is provided on the sleeve to be connected with the upper mold shell flange, and the fixing plate and the upper mold shell flange are fixed and installed conveniently with screws.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The present application provides flanges on the edges of the upper mold shell and the lower mold shell, which is convenient for fixing and connecting the upper mold shell and the lower mold shell; the locking assembly is directly installed on the flange, and there is no need to reserve installation space for the locking assembly on the mold frame, which helps to reduce the volume of the mold frame; the upper mold frame and the lower mold frame are both composed of a plane frame and a vertical frame, and the vertical frames of the upper mold frame and the lower mold frame respectively correspond to the contours of the upper mold shell and the lower mold shell, which helps to reduce the volume of the mold frame, and the vertical frame is fixedly connected to the flange to fix the upper mold frame and the lower mold frame on the upper mold shell and the lower mold shell respectively. The upper mold frame and the lower mold frame move with the upper mold shell and the lower mold shell respectively, which facilitates the transportation of the mold shell on the one hand and eliminates the process of repeated assembly of the mold frame and the mold shell on the other hand, thereby improving the overall assembly efficiency of the rotational molding mold;

[0029] 2. In the initial state, the elastic part holds up the sliding rod, the T-shaped clip joint is stuck in the end of the sleeve and is located in the through hole of the upper mold shell flange, and the upper mold shell and the lower mold shell are in an unfixed state; when the upper mold shell and the lower mold shell need to be fixed, first press the sliding rod downward, and the T-shaped clip joint passes through the I-shaped through holes on the two flanges. Rotate the sliding rod 90 degrees, and the T-shaped clip joint and the I-shaped T through hole form a cross structure, and the T-shaped clip joint cannot pass through the I-shaped through hole; loosen the sliding rod, and the sliding rod rises under the action of the elastic part, and the sleeve cooperates with the T-shaped clip joint to clamp and fix the two flanges to fix the upper mold shell and the lower mold shell; by pressing and rotating the sliding rod, the flange can be quickly fixed, which is convenient and quick to operate, and helps to improve the assembly efficiency of the mold;

[0030] 3. The present application provides a guiding bevel at the top of the sleeve which gradually rises in a clockwise direction along the circumference. When the handle is rotated clockwise, the handle will rise along the bevel, and the rising handle will synchronously drive the sliding rod and the T-shaped clip joint to rise; when the handle rises to the highest point of the bevel, that is, when the handle is attached to the end face of the sleeve away from the lower mold shell, the T-shaped clip joint rises to the bottom of the flange of the lower mold shell and clamps it. The two flanges and the sleeve are clamped and fixed between the handle and the T-shaped clip joint, completing the fixation of the upper mold shell and the lower mold shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the overall structure of the mold shell in an embodiment of the present application;

[0033] Figure 3 is a schematic diagram of the structure of the locking assembly;

[0034] Figure 4 is a schematic cross-sectional view of a locking assembly;

[0035] Figure 5 yes Figure 4 Enlarged view of area A in the middle;

[0036] Figure 6 It is a schematic diagram of the T-shaped card connector clamping action.

[0037] Description of the drawings: 1. Upper mold shell; 2. Lower mold shell; 3. Flange; 31. Through hole; 4. Locking assembly; 41. Sleeve; 411. Fixed plate; 412. Guide bevel; 413. Sliding hole; 42. Sliding rod; 421. Threaded column; 422. Connecting column; 423. T-shaped card joint; 43. Fixed ring; 431. First screw hole; 44. Elastic member; 45. Handle; 451. Socket; 452. Weight reduction groove; 453. Second screw hole; 46. Nut; 5. Abutment plate; 6. Mold frame; 61. Upper mold frame; 62. Lower mold frame; 63. Vertical frame; 631. Connecting plate; 64. Upper plane frame; 65. Lower plane frame; 66. Lifting ear. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] refer to Figure 1 The present application discloses a rotational molding mold equipped with a simple mold frame, including an upper mold shell 1, a lower mold shell 2, a locking assembly 4 and a mold frame 6. The splicing edges of the upper mold shell 1 and the lower mold shell 2 are both provided with flanges 3. The locking assembly 4 is installed on the flange 3 of the upper mold shell 1 and clamps the two flanges 3 to fix them.

[0040] The mold frame 6 includes an upper mold frame 61 and a lower mold frame 62. The upper mold frame 61 is composed of an upper planar frame 64 and a vertical frame 63. The vertical frame 63 is arranged between the upper planar frame 64 and the flange 3 of the upper mold shell 1 for connection and fixation. The upper planar mold frame 64 is a hexagonal frame made of welded profiles. The hexagonal frame leaves space at the four corners of the upper mold shell 1, leaving more room for operation of the locking assembly 4. The vertical frame 63 of the upper mold frame 61 is arranged along the contour of the upper mold shell 1 to help reduce the volume of the upper mold frame 61. One end of the vertical frame 63 of the upper mold frame 61 is welded to the upper planar frame 64, and the other end of the vertical frame 63 of the upper mold frame 61 is integrally formed with a connecting plate 631. The connecting plate 631 is fixed to the flange 3 of the upper mold shell 1 with screws, thereby removably fixing the upper mold frame and the upper mold shell. The upper mold frame 61 also includes a lifting lug 66, which is arranged on the side of the upper planar frame 64 away from the upper mold shell 1.

[0041] The lower mold frame 62 includes a lower plane frame 65 and a vertical frame 63. The lower plane frame 65 is a rectangular frame welded from profiles. The vertical frame 63 of the lower mold frame 62 is arranged along the contour of the lower mold shell 2 to reduce the volume of the lower mold frame 62. One end of the vertical frame 63 of the lower mold frame 62 is welded and fixed to the lower plane frame 65, and the other end of the vertical frame 63 of the lower mold frame 62 is fixed to the flange 3 on the lower mold shell 2 with screws so that the lower mold frame 62 and the lower mold shell 2 are detachably fixed.

[0042] Reference Figure 2 and Figure 3 , a straight through hole 31 is provided on the flange 3 of the upper mold shell 1 and the lower mold shell 2 corresponding to the installation position of the locking assembly 4. The locking assembly 4 includes a handle 45, a sleeve 41 and a sliding rod 42. A fixing plate 411 is welded and fixed to the bottom of the sleeve 41, and the fixing plate 411 is connected to the flange 3 of the upper mold shell 1 with screws. The sliding rod 42 is coaxially rotatably installed in the sleeve 41, and the handle 45 is fixed to the upper end of the sliding rod 42; a guide bevel 412 is provided on the top of the sleeve 41, and the guide bevel 412 is arranged clockwise along the circumferential direction. Press down the handle 45, and the handle 45 abuts against the bottom of the guide bevel 412. Turn the handle 45, and the handle 45 rotates and rises along the bevel until it abuts against the top of the bevel.

[0043] refer to Figure 4 and Figure 5 A T-shaped clip joint 423 is integrally provided at one end of the sliding rod 42 close to the I-shaped through hole 31, and the T-shaped clip joint 423 is clearance-matched with the I-shaped through hole 31; a connecting column 422 and a threaded column 421 are coaxially provided in sequence at one end of the sliding rod 42 away from the T-shaped clip joint 423, and the connecting column 422 is a quadrangular column; the cross-sectional profile of the connecting column 422 is smaller than that of the sliding rod 42, and the cross-sectional profile of the threaded column 421 is located within the cross-sectional profile of the connecting column 422. A socket 451 is provided through the end of the handle 45, and the socket 451 is a quadrilateral hole that is plugged into the connecting column 422; a second screw hole 453 that is connected to the socket 451 is provided through the side wall of the handle 45, and the second screw hole 453 is a threaded hole. A screw is screwed into the second screw hole 453 to tighten the connecting column 422; a nut 46 is screwed onto the threaded column 421, and the nut 46 is used to tighten the end face of the handle 45; a weight-reducing groove 452 is provided on the lower side of the main body of the handle 45 to facilitate operation.

[0044] The locking assembly also includes an elastic member 44, which is a spring. The elastic member 44 and the sliding rod 42 are arranged in the sleeve 41, and the spring is sleeved on the sliding rod 42; a sliding hole 413 is provided at the bottom of the sleeve 41 for sliding cooperation with the sliding rod 42, and a fixing ring 43 is provided on the sliding rod 42. The elastic member 44 is abutted between the fixing ring 43 and the bottom of the sleeve 41, and the elastic member 44 provides an upward support force for the sliding rod 42; the fixing ring 43 is sleeved on the sliding rod 42, and a first screw hole 431 is provided on the side wall of the fixing ring 43. A screw is screwed into the first screw hole 431 to abut the sliding rod 42 to fix the relative position of the fixing ring 43 and the sliding rod 42. After loosening the screw, the axial position of the fixing ring 43 can be adjusted to change the supporting force of the elastic member 44.

[0045] The flange 3 of the lower mold shell 2 is provided with an abutting plate 5, which is fixed to the flange 3 of the lower mold shell 2 by screws, and is made of a wear-resistant metal plate. The abutting plate 5 is clamped with the T-shaped clamping joint 423 to slow down the wear of the flange 3 of the lower mold shell 2.

[0046] With reference to Figure 4 and Figure 6 , the assembly process of the roto-molding mold provided by the present application is as follows:

[0047] In the initial state, the elastic member 44 props up the sliding rod 42, the T-shaped clamping joint 423 is clamped at the end of the sleeve 41 and in the through hole 31 of the flange 3 of the upper mold shell 1, and the upper mold shell 1 and the lower mold shell 2 are in an unfixed state. The upper mold frame 61 and the upper mold shell 1 are fixed by screws, and the lower mold frame 62 and the lower mold shell 2 are fixed by screws.

[0048] When the upper mold shell 1 and the lower mold shell 2 are fixed, the handle 45 is held and pressed downward first, so that the T-shaped clamping joint 423 is pressed downward and penetrates through the linear through hole 31 of the two flanges 3, and the elastic member 44 is compressed. After the handle 45 is pressed to the bottom, the handle 45 is rotated clockwise, and the handle 45 is rotated upward along the guide bevel 412. The T-shaped clamping joint 423 is synchronously rotated upward. When the handle 45 reaches the highest point and abuts against the top plane of the sleeve 41, the T-shaped clamping joint 423 is cross-clamped with the linear through hole 31 of the flange 3, and the T-shaped clamping joint 423 abuts against the abutting plate 5. The handle 45 is released, and the two flanges 3 and the sleeve 41 are clamped and fixed between the handle 45 and the T-shaped clamping joint 423, thereby completing the fixing of the upper mold shell 1 and the lower mold shell 2. The compressed elastic member 44 provides a pre-tightening force, and the locking structure is not easy to loosen.

[0049] When the upper mold shell 1 and the lower mold shell 2 are separated, the handle 45 is held and rotated counterclockwise. After being rotated by ninety degrees, the T-shaped clamping joint 423 is aligned with the linear through hole 31 of the two flanges 3, the elastic member 44 provides an upward force, and the sliding rod 42 is automatically lifted, thereby efficiently releasing the locking.

[0050] The upper mold frame 61 and the upper mold shell 1 are fixed by screws, and the lower mold frame 62 and the lower mold shell 2 are fixed by screws, so that only the assembly of the upper mold shell 1 and the lower mold shell 2 needs to be completed in the assembly process of the roto-molding mold, and the mold frame 6 and the mold shell do not need to be repeatedly assembled, which helps to greatly improve the assembly efficiency.

[0051] The working principle of this embodiment is as follows: flanges 3 are provided on the edges of the upper mold shell 1 and the lower mold shell 2 to facilitate the fixed connection between the upper mold shell 1 and the lower mold shell 2. The locking assembly 4 can also be directly installed on the flange 3, without reserving a mounting structure for the locking assembly on the mold frame. The flange 3 cooperates with the T-shaped clamping joint 423 on the sliding rod 42. The T-shaped clamping joint 423 is located within the through hole 31 of the flange 3. When the mold is in the separated state, the sliding rod 42 is pressed down and then rotated. The T-shaped clamping joint 423 passes through the through hole 31 and rotates to engage with the flange 3, thereby securing the mold. By controlling the movement of the sliding rod 42, the T-shaped clamping joint 423 can be placed in two different states: within the through hole 31 or through the through hole 31 to engage with the flange 3. The upper mold frame 61 is composed of an upper planar frame 64 and a vertical frame 63, and the lower mold frame 62 is composed of a lower planar frame 65 and a vertical frame 63. The upper mold frame 61 and the lower mold frame 62 are respectively fixed to the flanges 3 of the upper mold shell 1 and the lower mold shell 2 with screws. During the assembly process of the rotational molding mold, the upper mold frame 61 and the lower mold frame 62 move with the upper mold shell 1 and the lower mold shell 2 respectively, eliminating the repeated assembly process of the mold frame 6 and improving the overall assembly efficiency of the rotational molding mold.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rotational molding mold equipped with a simple mold frame, comprising an upper mold shell (1), a lower mold shell (2), a locking assembly (4) and a mold frame (6), characterized in that: The edges of the upper mold shell (1) and the lower mold shell (2) are both provided with flanges (3) for connection, and the locking assembly (4) is installed on the flanges and is used to fix the two flanges; the mold frame (6) includes an upper mold frame (61) and a lower mold frame (62), the upper mold frame (61) includes an upper plane frame (64) and a vertical frame (63), a plurality of vertical frames (63) are provided along the outline of the upper mold shell (1), one end of the vertical frame (63) is fixed to the upper plane frame (64), and the other end of the vertical frame (63) is fixed to the flange (3) of the upper mold shell (1); the lower mold frame (62) includes a lower plane frame (65) and a vertical frame (63), a plurality of vertical frames (63) are provided along the outline of the lower mold shell (2), one end of the vertical frame (63) is fixed to the lower plane frame (65), and the other end of the vertical frame (63) is fixed to the flange (3) of the lower mold shell (2).

2. A rotational molding mold equipped with a simple mold frame according to claim 1, characterized in that: The locking assembly (4) includes a sleeve (41), a sliding rod (42) and an elastic member (44); the sleeve (41) is fixed on the flange (3) of the upper mold shell (1), and the sleeve (41) is located on the side of the flange (3) away from the lower mold shell (2); the sliding rod (42) is slidably installed in the sleeve (41), and a T-shaped card joint (423) is provided at one end of the sliding rod (42) close to the flange (3). 23) is larger than the end profile of the sleeve (41), the elastic member (44) is arranged between the sliding rod (42) and the sleeve (41) so that the T-shaped clamping joint (423) is pressed against the end of the sleeve (41), and one end of the sliding rod (42) away from the T-shaped clamping joint (423) extends from the other end of the sleeve (41); a straight through hole (31) is provided on the flange (3) corresponding to the T-shaped clamping joint (423).

3. A rotational molding mold equipped with a simple mold frame according to claim 2, characterized in that: The locking assembly (4) further includes a handle (45), which is fixed on the sliding rod (42); a guiding bevel (412) which gradually rises in a clockwise direction along the circumference is provided on the top of the sleeve (41); when the T-shaped clamping joint (423) is clamped with the bottom of the flange (3) of the lower mold shell (2), the handle (45) abuts against the end face of the sleeve (41) away from the lower mold shell (2).

4. A rotational molding mold equipped with a simple mold frame according to claim 3, characterized in that: A socket (451) is provided through one end of the handle (45); a connecting column (422) is provided at one end of the sliding rod (42) away from the T-shaped card joint (423) and is engaged with the socket (451) socket; a second screw hole (453) is provided through the side wall of the handle (45) and is connected to the socket (451); a screw is installed in the second screw hole (453) to press against the connecting column (422); a threaded column (421) is provided at one end of the connecting column (422) away from the sliding rod (42); a nut (46) is screwed onto the threaded column (421), and the nut (46) abuts against the handle (45).

5. The rotational molding mold equipped with a simple mold frame according to claim 2, characterized in that: The elastic member (44) is a spring, which is sleeved on the sliding rod (42); a fixing ring (43) is fixed on the sliding rod (42), and the elastic member (44) is tightly arranged between the fixing ring (43) and the bottom of the sleeve (41).

6. A rotational molding mold equipped with a simple mold frame according to claim 5, characterized in that: The fixing ring (43) is slidingly sleeved on the sliding rod (42), and a first screw hole (431) is provided through the peripheral side wall of the fixing ring (43), and a screw is installed in the first screw hole (431) to abut against the side wall of the sliding rod (42).

7. The rotational molding mold equipped with a simple mold frame according to claim 1, characterized in that: One end of the vertical frame (63) is fixed to the plane frame, and the other end of the vertical frame (63) is fixed with a connecting plate (631), and the connecting plate (631) is detachably fixed to the flange (3) by screws.

8. A rotational molding mold equipped with a simple mold frame according to claim 1, characterized in that; It also includes a lifting lug (66), which is fixed to a side of the upper plane frame (64) away from the upper mold shell.

9. A rotational molding mold equipped with a simple mold frame according to claim 4, characterized in that: An abutting plate (5) is provided between the abutting surface of the flange (3) of the lower mold shell (2) and the T-shaped clamping joint (423). When the T-shaped clamping joint (423) and the abutting plate (5) are clamped, the handle (45) abuts against the end surface of the sleeve (41) away from the lower mold shell (2).

10. The rotational molding mold equipped with a simple mold frame according to claim 4, characterized in that: A fixing plate (411) is provided on one side of the sleeve (41) close to the flange (3) of the upper mold shell (1), and the fixing plate (411) and the flange (3) are fixed with screws.

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