A weight plate counterweight device for mold frame

Abstract

The present invention discloses a weight plate counterweight device for a mold frame, comprising a base, a top plate fixedly connected to the upper side of the base through a plurality of support rods, a funnel fixedly connected inside the top plate, a rotating ring rotatably connected to the lower side of the funnel, a hose fixedly connected to the lower side of the rotating ring, a workbench rotatably connected to the upper side of the base, a center rod rotatably connected to the upper side of the workbench, a center frame provided on the upper side of the center rod, a threaded groove provided on the lower side of the center frame, the center rod and the threaded groove are threadedly connected, a moving frame is provided inside the center frame, the moving frame is penetrated by the center frame, and a threaded barrel is slidably sleeved up and down inside the moving frame. When the present invention needs to carry out canning operation, the material is poured into the funnel, the discharge pipe is rotated as a whole, and the material adding operation is started, the adding effect is better, the overall operation is automated, and the practical effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of weight plate processing, in particular to a weight plate counterweight device for a mold frame. Background Art

[0002] The interior of the counterweight plate for the formwork is filled with yellow sand mixed with cement. Currently, the sand filling operation is mainly carried out manually. First, the corresponding mold is fixed, and the yellow sand is poured into the mold. Then, operations such as leveling, drying, and weighing are performed. The overall operation is simple, but in the actual working process, the sand filling operation is mainly carried out manually, which is time-consuming and labor-intensive, and the overall work effect is low. In addition, the two processes of sand filling and leveling are carried out separately, which further reduces the overall work efficiency. Therefore, a counterweight device for a counterweight plate for a formwork is provided. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: using manual methods to carry out sand filling operations, which is time-consuming and labor-intensive, and the overall work effect is low, and the two processes of sand filling and leveling are carried out separately, further reducing the overall work efficiency, and a counterweight device for a formwork counterweight plate is proposed.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A counterweight device for a mold frame, comprising a base, a top plate fixedly connected to the upper side of the base through a plurality of support rods, a funnel fixedly connected in the top plate, a rotating ring rotatably connected to the lower side of the funnel, a hose fixedly connected to the lower side of the rotating ring, a workbench rotatably connected to the upper side of the base, a center rod rotatably connected to the upper side of the workbench, a center frame provided on the upper side of the center rod, a threaded groove provided on the lower side of the center frame, the center rod and the threaded groove are threadedly connected, a moving frame is provided in the center frame, the moving frame penetrates the center frame, a threaded barrel is slidably sleeved up and down in the moving frame, the threaded barrel penetrates the moving frame, a contact rod is slidably sleeved on the lower side of the threaded barrel, the contact rod penetrates the threaded barrel and the threaded barrel is slidably connected, one end of the contact rod is fixedly connected to a contact plate, a limit plate is fixedly connected to the side wall of the moving frame, a discharge pipe is fixedly connected to the side of the limit plate away from the moving frame, and a control device for the discharge pipe is provided on the upper side of the limit plate.

[0006] Preferably, both sides of the central frame are provided with limiting grooves, and limiting blocks are slidably connected in the two limiting grooves, and the limiting blocks are fixedly connected to the movable frame.

[0007] Preferably, two thread grooves are provided on the outer side of the threaded barrel, a slide plate is slidably connected inside the two thread grooves, and the slide plate is fixedly connected to the inner side wall of the movable frame.

[0008] Preferably, the outer thread sleeve of the threaded barrel is provided with two nuts, and the two nuts are located at the upper and lower sides of the moving frame and are in contact with the moving frame.

[0009] Preferably, the control device includes a control box fixedly connected to the side wall of the discharge pipe, a baffle is provided in the control box, the baffle runs through the discharge pipe and the control box, a discharge plate is fixedly connected in the discharge pipe, the discharge plate is located at the lower side of the discharge pipe, a plurality of through holes are provided on the upper sides of the discharge plate and the baffle, the plurality of through holes are arranged relative to each other, the baffle is fixedly connected to a metal plate in the control box, the metal plate is connected to the side wall of the control box through a third spring, a power supply is fixedly connected to the inner side wall of the control box, a variable resistance plate is fixedly connected in the control box, a conductive sheet is provided in the control box, the conductive sheet is located at the lower side of the variable resistance plate and the variable resistance plate The resistance plates are arranged relatively to each other, and the power supply, variable resistance plate and conductive sheet are connected by wires. An iron rod is fixedly connected in the control box, and the wire and the iron rod are wound around each other. A control rod is fixedly connected to the lower side of the conductive sheet, and a positioning ring is fixedly connected to the lower side of the control rod, and a positioning rod is slidingly sleeved in the positioning ring. A positioning plate is fixedly connected to the side of the positioning rod close to the moving frame, and the positioning ring is connected to the positioning plate through a first spring, and the positioning plate and the moving frame are fixedly connected. An extension rod is fixedly connected to the upper side of the contact rod, and moving rings are sleeved on the outer sides of the extension rod and the control rod, and the two moving rings are fixedly connected by a moving rod.

[0010] Preferably, a center plate is fixedly connected to the upper side of the center frame, an iron block is fixedly connected to the side of the center plate away from the movable frame, a square rod is fixedly connected to the side of the center plate close to the control box, the square rod passes through the control box, a plurality of through slots are provided on the upper and lower sides of the square rod, two clamping rods are fixedly connected to the side of the metal plate close to the iron rod, and clamping plates are fixedly connected to the sides of the two clamping rods close to the iron rod, the clamping plates pass through the through slots and are arranged opposite to the through slots.

[0011] Preferably, a regulating cylinder is provided in a threaded sleeve inside the center plate, and the regulating cylinder is arranged to pass through the center plate. A regulating rod is provided in a sliding sleeve inside the regulating cylinder, and the regulating rod passes through the designer of the regulating cylinder. A regulating plate is fixedly connected to one side of the regulating rod close to the control box, and the regulating plate is connected to the regulating cylinder through a second spring.

[0012] Preferably, two fixing plates are symmetrically fixedly connected on the upper side of the base, and threaded rods are threadedly sleeved on the side walls of the two fixing plates. The threaded rods penetrate the fixing plates, and an arc plate is rotatably connected to the side of the threaded rods close to the workbench. The arc plate is located on the upper side of the workbench and is in contact with the workbench. A plurality of spherical grooves are provided on the side of the arc plates close to each other, and a plurality of metal balls are installed in the plurality of spherical grooves.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when canning operation is required, the material is poured into the funnel, the discharge pipe is rotated as a whole, and the material adding operation is started, the adding effect is better, and at the same time, under the action of the contact plate, a simple smoothing operation of the material is completed, and the excess material is moved to both sides of the contact plate, and the material discharge rate is reduced at the same time, so that the smoothing operation can be better completed, and then when there is a lot of material, the discharge pipe as a whole moves horizontally for a distance, and the material adding operation continues, and the above operation is repeated to complete the material adding operation for molds of different sizes. Secondly, it can also be adjusted according to the actual working conditions to meet more different work needs, and the overall automation is carried out with good practical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a weight balancing device for a mold frame provided by the present invention;

[0015] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0016] Figure 3 This is a schematic structural diagram of an arc plate in a weight balancing device for a mold frame proposed by the present invention;

[0017] Figure 4 This is a schematic diagram of the connection between the center frame and the discharge pipe in a weight plate counterweight device for a mold frame proposed by the present invention;

[0018] Figure 5 It is a cross-sectional connection schematic diagram of a control box in a weight plate counterweight device for a mold frame proposed by the present invention;

[0019] Figure 6 It is a cross-sectional connection diagram of a center frame and a discharge pipe in a weight plate counterweight device for a mold frame proposed by the present invention;

[0020] Figure 7 for Figure 6 A magnified view of the structure at B in the middle;

[0021] Figure 8 This is a cross-sectional connection schematic diagram of another angle of a disc discharge pipe of a center frame in a counterweight device for a counterweight plate for a mold frame proposed by the present invention.

[0022] In the figure: 1 base, 2 top plate, 3 funnel, 4 workbench, 5 center rod, 6 center frame, 7 rotating ring, 8 hose, 9 contact plate, 10 fixed plate, 11 threaded rod, 12 arc plate, 13 moving frame, 14 threaded barrel, 15 nut, 16 extension rod, 17 moving ring, 18 moving rod, 19 positioning plate, 20 positioning rod, 21 positioning ring, 22 first spring, 23 control rod, 24 control box, 25 limit plate, 26 discharge pipe, 27 square rod, 28 through slot, 29 regulating tube, 30 regulating rod, 31 regulating plate, 32 second spring, 33 slide slot, 34 spherical slot, 35 metal ball, 36 center plate, 37 iron block, 38 contact rod, 39 limit slot, 40 limit block, 41 threaded slot, 42 baffle, 43 through hole, 44 discharge plate, 45 metal plate, 46 third spring, 47 clamping rod, 48 clamping plate, 49 power supply, 50 variable resistance plate, 51 conductive sheet, 52 iron rod, 53 wire, 54 slide plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-Figure 8 A weight plate counterweight device for a mold frame includes a base 1, a top plate 2 is fixedly connected to the upper side of the base 1 through a plurality of support rods, a funnel 3 is fixedly connected inside the top plate 2, a rotating ring 7 is rotatably connected to the lower side of the funnel 3, a hose 8 is fixedly connected to the lower side of the rotating ring 7, a workbench 4 is rotatably connected to the upper side of the base 1, a center rod 5 is rotatably connected to the upper side of the workbench 4, the center rod 5 can automatically rotate at a uniform speed when the center rod 5 is started, a center frame 6 is provided on the upper side of the center frame 6, a threaded groove 41 is provided on the lower side of the center rod 5, and the center rod 5 and the threaded groove 41 are threadedly connected. A moving frame 13 is provided in the center frame 6, and the moving frame 13 is provided with a threaded barrel 14 which is slidably sleeved up and down in the moving frame 13, and the threaded barrel 14 is provided to be slidably sleeved at the lower side of the threaded barrel 14, and the contact rod 38 is provided to be slidably sleeved at the lower side of the threaded barrel 14, and the contact rod 38 is provided to be slidably connected with the threaded barrel 14 and the threaded barrel 14, and one end of the contact rod 38 is fixedly connected with a contact plate 9, and a side wall of the moving frame 13 is fixedly connected with a limiting plate 25, and a side of the limiting plate 25 away from the moving frame 13 is fixedly connected with a discharge pipe 26, and a control device for the discharge pipe 26 is provided on the upper side of the limiting plate 25;

[0025] Limiting grooves 39 are provided on both sides of the center frame 6. Limiting blocks 40 are slidably connected in the two limiting grooves 39. The limiting blocks are fixedly connected to the moving frame 13 to determine and limit the movement trajectory of the moving frame 13.

[0026] Two thread grooves 41 are provided on the outer side of the threaded barrel 14, and a slide plate 54 is slidably connected inside the two thread grooves 41. The slide plate 54 is fixedly connected to the inner wall of the moving frame 13, thereby completing the operation of limiting the movement trajectory of the threaded barrel 14;

[0027] The outer thread sleeve of the threaded barrel 14 is provided with two nuts 15, which are located at the upper and lower sides of the moving frame 13 and are in contact with the moving frame 13. The nuts 15 are used to complete the limiting and fixing operation between the threaded barrel 14 and the moving frame 13.

[0028] The control device includes a control box 24 fixedly connected to the side wall of the discharge pipe 26, a baffle 42 is provided in the control box 24, the baffle 42 runs through the discharge pipe 26 and the control box 24, a discharge plate 44 is fixedly connected in the discharge pipe 26, the discharge plate 44 is located at the lower side of the discharge pipe 26, a plurality of through holes 43 are provided on the upper sides of the discharge plate 44 and the baffle 42, and the plurality of through holes 43 are arranged relative to each other, the baffle 42 is moved to change the gap between the through holes 43 between the baffle 42 and the discharge plate 44, thereby completing the adjustment operation of the opening of the discharge pipe 26, the baffle 42 is located in the control box 24 and is fixedly connected to a metal plate 45, the metal plate 45 is connected to the side wall of the control box 24 through a third spring 46, a power supply 49 is fixedly connected to the inner side wall of the control box 24, a variable resistor plate 50 is fixedly connected in the control box 24, a conductive sheet 51 is provided in the control box 24, and the conductive sheet 51 is located at the variable The lower side of the resistance plate 50 is arranged opposite to the variable resistance plate 50, and the conductive sheet 51 and the variable resistance plate 50 can be approximately regarded as a sliding rheostat. The power supply 49, the variable resistance plate 50, and the conductive sheet 51 are connected by a wire 53. An iron rod 52 is fixedly connected in the control box 24, and the wire 53 and the iron rod 52 are wound around. A control rod 23 is fixedly connected to the lower side of the conductive sheet 51, and a positioning ring 21 is fixedly connected to the lower side of the control rod 23. A positioning rod 20 is slidably sleeved in the positioning ring 21. A positioning plate 19 is fixedly connected to the side of the positioning rod 20 close to the moving frame 13. The positioning ring 21 is connected to the positioning plate 19 through a first spring 22. The positioning plate 19 and the moving frame 13 are fixedly connected. An extension rod 16 is fixedly connected to the upper side of the contact rod 38. A moving ring 17 is sleeved on the outer side of the extension rod 16 and the control rod 23. The two moving rings 17 are fixedly connected by a moving rod 18.

[0029] A center plate 36 is fixedly connected to the upper side of the center frame 6, and an iron block 37 is fixedly connected to the side of the center plate 36 away from the moving frame 13. A square rod 27 is fixedly connected to the side of the center plate 36 close to the control box 24. The square rod 27 runs through the control box 24. A plurality of through slots 28 are provided on the upper and lower sides of the square rod 27. Two clamping rods 47 are fixedly connected to the side of the metal plate 45 close to the iron rod 52. A clamping plate 48 is fixedly connected to the side of the two clamping rods 47 close to the iron rod 52. The clamping plate 48 runs through the through slot 28 and is arranged opposite to the through slot 28. The through slot 28 and the clamping plate 48 cooperate to complete the overall clamping and fixing device of the control box 24. When the magnetic force of the electromagnet composed of the iron rod 52 and the wire 53 gradually increases, the connection between the clamping plate 48 and the through slot 28 is disconnected, thereby automatically driving the control box 24 to move as a whole, thereby better completing the material adding operation and completing the automatic material adding operation.

[0030] The central plate 36 is provided with a regulating tube 29 in the inner thread sleeve, and the regulating tube 29 is provided through the central plate 36. A regulating rod 30 is provided in the regulating tube 29 for sliding sleeve, and the regulating rod 30 is provided through the regulating tube 29. A regulating plate 31 is fixedly connected to the side of the regulating rod 30 close to the control box 24. The regulating plate 31 is connected to the regulating tube 29 through a second spring 32. The regulating plate 31 cooperates with the regulating tube 29 to complete the operation of limiting the movement trajectory of the control box 24, and then it can be adjusted according to the actual size of the mold, so as to better complete the corresponding material adding operation;

[0031] Two fixing plates 10 are symmetrically fixedly connected on the upper side of the base 1, and threaded rods 11 are threadedly sleeved on the side walls of the two fixing plates 10. The threaded rods 11 are arranged through the fixing plates 10, and an arc plate 12 is rotatably connected to the side of the threaded rods close to the workbench 4. The arc plate 12 is located on the upper side of the workbench 4 and is connected to the workbench 4 in contact. A plurality of spherical grooves 34 are provided on the side of the arc plate 12 close to each other, and a plurality of metal balls 35 are installed in the plurality of spherical grooves 34. The arc plate 12, the threaded rods 11 and the metal balls 35 cooperate with each other to complete the clamping and fixing operation of the corresponding mold.

[0032] In the present invention, when the weight plate needs to be processed, the specific operation is as follows: put the corresponding mold on the center rod 5, rotate the threaded rod 11, the threaded rod 11 drives the arc plate 12 to move, and the arc plate 12 drives the multiple metal balls 35 to move until the metal balls 35 and the mold are tightly contacted and connected together, rotate the center frame 6 as a whole, screw the center rod 5 into the thread groove 41, move the threaded cylinder 14 up and down, the threaded cylinder 14 drives the contact plate 9 to move through the contact rod 38 until the position of the contact plate 9 meets the working requirements, rotate the nut 15 until the nut 15 and the moving frame 13 are tightly contacted and connected together, rotate the regulating cylinder 29, and the regulating cylinder 29 drives the regulating rod 30 and the regulating plate 31 to move as a whole until the regulating plate 3 1 until the position meets the working needs, pour the corresponding materials into the funnel 3, and the materials inside the funnel 3 enter the mold through the rotating ring 7, the hose 8 and the discharge pipe 26, start the center rod 5, the center rod 5 rotates, and the center rod 5 drives the discharge pipe 26 to rotate around the center rod 5 through the center frame 6 and the limit plate 25, and start the filling operation. When the material inside the movement space of the discharge pipe 26 gradually increases, the contact plate 9 will gradually contact the material and push the material to both sides of the contact plate 9. The contact area between the contact plate 9 and the material gradually increases, and the resistance gradually increases. At the same time, the contact plate 9 drives the contact rod 38 to move, and the contact rod 38 cooperates with the moving ring 17 and the moving rod 18 to drive the control rod 23 The control rod 23 drives the positioning ring 21 to move. The positioning ring 21 compresses the first spring 22 and drives the conductive sheet 51 to move. The circuit composed of the conductive sheet 51, the variable resistor plate 50, the wire 53 and the power supply 49 is closed. During the material adding process, the resistance of the conductive sheet 51 and the variable resistor plate 50 in the circuit composed of the power supply 49 and the wire 53 gradually decreases, thereby causing the current inside the wire 53 to gradually increase. The magnetic force of the electromagnet composed of the wire 53 and the iron rod 52 gradually increases, thereby attracting the metal plate 45 to move. While the metal plate 45 stretches the third spring 46, it drives the baffle 42 to move. The gap between the through hole 43 of the baffle 42 and the discharge pipe 26 gradually decreases, thereby causing the material discharge rate to gradually decrease. In this process, the metal plate 4 5 will also drive the card plate 48 to move through the card rod 47 until the card plate 48 is moved out of the through slot 28. At this time, under the attraction of the iron rod 52 and the wire 53, the control box 24 is attracted to move as a whole in the direction close to the center plate 36, thereby driving the limit plate 25, the moving frame 13 and the discharge pipe 26 to move as a whole, and the contact area between the contact plate 9 and the material becomes smaller, and the resistance is reduced. At this time, under the action of the first spring 22, the control rod 23 and the contact rod 38 return to their original positions, and the resistance of the variable resistance plate 50 and the conductive sheet 51 in the circuit increases. Then, under the action of the third spring 46, the baffle 42 returns to its original position, and the gap between the through hole 43 between the baffle 42 and the discharge plate 44 gradually increases, and the material discharge rate gradually increases, and the above operation begins to be repeated.Until the control box 24 and the contact plate 9 are in contact and connected together, the second spring 32 is compressed to complete the overall material adding operation.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A weight plate counterweight device for a mold frame, comprising a base (1), characterized in that: The upper side of the base (1) is fixedly connected with a top plate (2) via a plurality of support rods, a funnel (3) is fixedly connected inside the top plate (2), a rotating ring (7) is rotatably connected to the lower side of the funnel (3), a hose (8) is fixedly connected to the lower side of the rotating ring (7), a workbench (4) is rotatably connected to the upper side of the base (1), a center rod (5) is rotatably connected to the upper side of the workbench (4), a center frame (6) is provided on the upper side of the center rod (5), a threaded groove (41) is provided on the lower side of the center frame (6), the center rod (5) and the threaded groove (41) are threadedly connected, a movable frame (13) is provided inside the center frame (6), and the movable frame (13) is provided on the upper side of the workbench (4). 3) penetrating the central frame (6), the movable frame (13) having a threaded cylinder (14) slidingly sleeved up and down, the threaded cylinder (14) penetrating the movable frame (13), the lower sliding sleeve of the threaded cylinder (14) being provided with a contact rod (38), the contact rod (38) penetrating the threaded cylinder (14) and being slidably connected to the threaded cylinder (14), one end of the contact rod (38) being fixedly connected with a contact plate (9), the side wall of the movable frame (13) being fixedly connected with a limit plate (25), the side of the limit plate (25) away from the movable frame (13) being fixedly connected with a discharge pipe (26), and the upper side of the limit plate (25) being provided with a control device for the discharge pipe (26); The outer thread sleeve of the threaded barrel (14) is provided with two nuts (15), and the two nuts (15) are located at the upper and lower sides of the moving frame (13) and are in contact with and connected to the moving frame (13); The control device comprises a control box (24) fixedly connected to the side wall of the discharge pipe (26), a baffle (42) being provided in the control box (24), the baffle (42) being arranged to penetrate the discharge pipe (26) and the control box (24), a discharge plate (44) being fixedly connected in the discharge pipe (26), the discharge plate (44) being arranged at the lower side of the discharge pipe (26), a plurality of through holes (43) being provided on the upper sides of the discharge plate (44) and the baffle (42), the plurality of through holes (43) ), the baffle (42) is located in the control box (24) and is fixedly connected to a metal plate (45), the metal plate (45) is connected to the side wall of the control box (24) via a third spring (46), a power source (49) is fixedly connected to the inner side wall of the control box (24), a variable resistance plate (50) is fixedly connected to the control box (24), a conductive sheet (51) is provided in the control box (24), and the conductive sheet (51) is located on the lower side of the variable resistance plate (50) and the variable resistance plate (50). 0) are arranged relatively to each other, the power source (49), the variable resistance plate (50), and the conductive sheet (51) are connected by a wire (53), an iron rod (52) is fixedly connected inside the control box (24), the wire (53) and the iron rod (52) are arranged in a winding manner, a control rod (23) is fixedly connected to the lower side of the conductive sheet (51), a positioning ring (21) is fixedly connected to the lower side of the control rod (23), a positioning rod (20) is slidably sleeved inside the positioning ring (21), and the positioning rod (20) ) A positioning plate (19) is fixedly connected to one side close to the moving frame (13); the positioning ring (21) is connected to the positioning plate (19) via a first spring (22); the positioning plate (19) and the moving frame (13) are fixedly connected; an extension rod (16) is fixedly connected to the upper side of the contact rod (38); a moving ring (17) is sleeved on the outer sides of the extension rod (16) and the control rod (23); and the two moving rings (17) are fixedly connected via a moving rod (18); A center plate (36) is fixedly connected to the upper side of the center frame (6); an iron block (37) is fixedly connected to the side of the center plate (36) away from the moving frame (13); a square rod (27) is fixedly connected to the side of the center plate (36) close to the control box (24); the square rod (27) penetrates the control box (24); a plurality of through slots (28) are provided on the upper and lower sides of the square rod (27); two clamping rods (47) are fixedly connected to the side of the metal plate (45) close to the iron rod (52); a clamping plate (48) is fixedly connected to the side of the two clamping rods (47) close to the iron rod (52); the clamping plates (48) penetrate the through slots (28) and are arranged opposite to the through slots (28); The central plate (36) is internally threadedly sleeved with a regulating tube (29), the regulating tube (29) being arranged to penetrate the central plate (36), a regulating rod (30) being slidably sleeved in the regulating tube (29), the regulating rod (30) being arranged to penetrate the regulating tube (29), a regulating plate (31) being fixedly connected to a side of the regulating rod (30) close to the control box (24), the regulating plate (31) being connected to the regulating tube (29) via a second spring (32); Two fixing plates (10) are symmetrically fixedly connected on the upper side of the base (1), and threaded sleeves are provided on the side walls of the two fixing plates (10) with threaded rods (11). The threaded rods (11) are arranged to penetrate the fixing plates (10), and a curved plate (12) is rotatably connected to the side of the threaded rod close to the workbench (4). The curved plate (12) is located on the upper side of the workbench (4) and is connected to the workbench (4). A plurality of spherical grooves (34) are provided on the side of the curved plate (12) close to the other side, and a plurality of metal balls (35) are installed in the plurality of spherical grooves (34).

2. A weight plate counterweight device for a mold frame according to claim 1, characterized in that: Limiting grooves (39) are provided on both sides of the central frame (6), and limiting blocks (40) are slidably connected in the two limiting grooves (39), and the limiting blocks and the movable frame (13) are fixedly connected.

3. A weight plate counterweight device for a mold frame according to claim 1, characterized in that: Two thread grooves (41) are provided on the outer side of the threaded barrel (14), a slide plate (54) is slidably connected inside the two thread grooves (41), and the slide plate (54) is fixedly connected to the inner side wall of the movable frame (13).

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