Clamp for injection molding machine

Abstract

The utility model discloses a clamp for an injection molding machine. The clamp comprises a rack, a first driving unit, a second driving unit, a lifting unit, a linkage mechanism and a clamping mechanism, the machine frame comprises a main machine frame and an auxiliary machine frame, and the auxiliary machine frame is connected to a bottom plate of the main machine frame in a sleeved mode. The first driving unit is arranged on the main frame; the second driving unit is arranged on the auxiliary rack; a connecting plate is arranged in the first driving unit, and a lifting frame and a lifting push rod are arranged in the lifting unit; the linkage mechanism is arranged on the lifting frame, and the lifting push rod drives the lifting frame to vertically slide on the connecting plate; a first clamping jaw and a second clamping jaw are arranged in the clamping mechanism, and the linkage mechanism drives clamping of the first clamping jaw and the second clamping jaw. The clamp provided by the technical scheme can be used for clamping plastic-coated metal pieces or small molds with different heights and widths; and the applicable categories are increased, the universality is enhanced, the manufacturing time consumption of the clamp for production is reduced, and the comprehensive production cost of the plastic-coated metal part is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding equipment, and in particular relates to a clamp used for an injection molding machine. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics; however, the clamps used in injection molding machines for plastic-coated metal parts or small molds for switch buttons on the market can only fix and clamp metal parts or molds of a single size, and the operation is cumbersome, with many fixing parts, and the height and width of the injection molding clamp cannot be freely adjusted after fixing; the small application range of injection molding machine clamps will increase production costs and prolong production cycles. Summary of the invention

[0003] The present invention aims to solve the above problems and provides a clamp for an injection molding machine.

[0004] A clamp for an injection molding machine comprises: a frame 1, a first drive unit, a second drive unit, a lifting unit, a linkage mechanism, and a clamping mechanism; the frame 1 comprises: a main frame 11 and a sub-frame 12, the sub-frame 12 being sleeved on a bottom plate of the main frame 11; the first drive unit is arranged on the main frame 11; the second drive unit is arranged on the sub-frame 12; a connecting plate is arranged in the first drive unit, and a lifting frame and a lifting push rod are arranged in the lifting unit; the linkage mechanism is arranged on the lifting frame, and the lifting push rod drives the lifting frame to slide vertically on the connecting plate; the clamping mechanism is provided with a first clamping jaw and a second clamping jaw, and the linkage mechanism drives the clamping of the first clamping jaw and the second clamping jaw.

[0005] The first driving unit is a double-helix screw motion mechanism; the first driving unit is provided with a double-helix integrated screw 21, a first slide rail 22, a first servo motor 26, a left connecting plate 27 and a right connecting plate 28; the left connecting plate 27 and the right connecting plate 28 are respectively connected to the double-helix integrated screw 21 and the first slide rail 22 through left-hand and right-hand screw nuts and sliders; the output shaft of the first servo motor 26 is fixedly connected to the double-helix integrated screw 21; the left connecting plate 27 and the right connecting plate 28 are symmetrical and identical; the first servo motor 26 drives the left connecting plate 27 and the right connecting plate 28 to move relative to each other.

[0006] The lifting unit is provided with a lifting frame, a connecting rod connecting block and a linkage sleeve, a lifting frame connecting rod and a lifting push rod; the left connecting plate 27 and the right connecting plate 28 are both provided with a lifting frame, a connecting rod connecting block and a linkage sleeve; the left and right lifting frames are symmetrical and the same; a lifting slide bar is provided at the lower part of the lifting frame, and the connecting rod connecting block is arranged at one end of the lifting frame; the lifting frame is provided with a second sleeve through hole, and the linkage sleeve is arranged at the second sleeve through hole; the left and right connecting plates are both provided with a first sleeve through hole; the left and right lifting frames are provided with a second sleeve through hole; the axial center lines of the first sleeve through hole, the second sleeve through hole and the linkage sleeve coincide; the connecting rod connecting block is connected to the lifting push rod through the lifting frame connecting rod; the left and right lifting frames are lifted and lowered along the vertical direction of the left and right connecting plates through the lifting push rod.

[0007] The second drive unit is a single screw motion mechanism; the second drive unit is provided with: a second servo motor 35, a linkage connecting plate 36, and a linkage slider groove is provided on the linkage connecting plate 36; the linkage slider groove is linearly reciprocated by the second servo motor 35.

[0008] The linkage mechanism comprises: a linkage shaft, a linkage shaft sheet, and a linkage spline shaft; the left and right lifting frames are both provided with symmetrical and identical linkage shafts, linkage shaft sheets, and linkage spline shafts; the upper end of the linkage shaft is a spline sleeve; the lower end of the linkage shaft is provided with a linkage arm, and the lower end of the end of the linkage arm is axially connected with a linkage slider; the left and right linkage sliders are sleeved in the linkage slider grooves on the linkage connecting plate 36; the spline sleeve is axially connected in the linkage shaft sleeve; the linkage shaft sheet is provided with a spline through hole; the linkage spline shaft is sleeved with the spline through hole, the linkage shaft sleeve and the spline sleeve in sequence; when the lifting frame drives the linkage spline shaft to rise and fall, the linkage spline shaft slides up and down synchronously in the spline sleeve.

[0009] The clamping mechanism is also provided with a linkage rod and an adjustable linkage rod; the ends of the left and right lifting frames are both axially connected with a first clamping jaw and a second clamping jaw; the other end of the first clamping jaw and the other end of the second clamping jaw are axially connected to the two ends of the linkage shaft piece through the linkage rod and the adjustable linkage rod respectively; the linkage shaft piece and the linkage shaft 51 are synchronously deflected in the same direction to drive one end of the first clamping jaw and one end of the second clamping jaw to engage with each other.

[0010] The technical scheme provides a clamp for an injection molding machine, which includes: a frame 1, a first drive unit, a second drive unit, a lifting unit, a linkage mechanism, and a clamping mechanism; the frame 1 includes: a main frame 11, a sub-frame 12, and the sub-frame 12 is sleeved on the bottom plate of the main frame 11; the first drive unit is arranged on the main frame 11; the second drive unit is arranged on the sub-frame 12; the first drive unit is provided with a connecting plate, and the lifting unit is provided with a lifting frame and a lifting push rod; the linkage mechanism is arranged on the lifting frame, and the lifting push rod drives the lifting frame to slide vertically on the connecting plate; the clamping mechanism is provided with a first clamp and a second clamp, and the linkage mechanism drives the clamping of the first clamp and the second clamp. The clamp provided by the technical scheme can clamp plastic-coated metal parts or small molds of different heights and widths; the applicable categories are increased, the versatility is enhanced, the manufacturing time consumption of the clamp used for production is reduced, and the comprehensive production cost of plastic-coated metal parts is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall clamping state of a clamp for an injection molding machine of the utility model;

[0012] Figure 2 This is a schematic diagram of a clamping state of a clamp used for an injection molding machine of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of a frame and a drive unit of a clamp for an injection molding machine according to the utility model;

[0014] Figure 4 This is a schematic diagram of the connection between the linkage arm and the upper connecting plate of a clamp for an injection molding machine of the utility model;

[0015] Figure 5 This is a schematic diagram of the connection between a lifting unit and a clamping mechanism of a clamp for an injection molding machine of the utility model;

[0016] In the figure: 1, frame, 11, main frame, 12, auxiliary frame, 21, double spiral integrated screw, 211, left spiral screw, 212, right spiral screw, 213, midpoint limit, 22, first slide rail, 23, left spiral nut, 24, right spiral nut, 25, first slider, 251, left first slider, 252, right first slider, 26, first servo motor, 27, left connecting plate, 271, left first shaft sleeve through hole, 272, left first linkage shaft sleeve, 273, left rectangular slide rod hole, 28, right connecting plate, 282, right first linkage shaft sleeve, 31, single spiral screw, 32, second slide rail, 33, nut, 34, second slider, 35, second servo motor, 36, linkage connecting plate, 361, left linkage slider slot, 362, right linkage slider slot, 41, left lifting frame, 411, left lifting slide bar, 412, left second shaft sleeve through hole, 42, left connecting rod connecting block, 43, left linkage shaft sleeve, 44, right lifting frame, 45, right connecting rod connecting block, 46, right linkage shaft sleeve, 47, lifting frame connecting rod, 48, lifting push rod, 481, telescopic rod, 51, left linkage shaft, 511, left spline sleeve, 512, left linkage arm, 513, left linkage slider, 5 14. Left sleeve, 52. Left linkage shaft, 53. Left linkage spline shaft, 54. Right linkage shaft, 542. Right linkage arm, 55. Right linkage shaft, 56. Right linkage spline shaft, 61. Left connecting rod, 62. Left adjustable connecting rod, 63. Left first clamping jaw, 64. Left second clamping jaw, 65. Right connecting rod, 66. Right adjustable connecting rod, 67. Right first clamping jaw, 68. Right second clamping jaw. DETAILED DESCRIPTION

[0017] The technical scheme will be further described clearly and completely below in conjunction with the accompanying drawings of the technical scheme. The described embodiments are only a part of the technical scheme, not all of the embodiments. Based on the technical scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0018] See also Figures 1 to 5 As shown, a clamp for an injection molding machine comprises: a frame 1, a first drive unit, a second drive unit, a lifting unit, a linkage mechanism, and a clamping mechanism;

[0019] The frame 1 comprises: a main frame 11 and a sub-frame 12, wherein the main frame 11 and the sub-frame 12 are two U-shaped frames of different sizes; the sub-frame 12 is sleeved on the bottom plate of the main frame 11; the extension line of the side plate of the sub-frame 12 is perpendicular to the side plate of the main frame 11;

[0020] The first driving unit includes: a double-helix integrated lead screw 21, a first slide rail 22, a left-helix screw nut 23, a right-helix screw nut 24, a first slider 25, a first servo motor 26, a left connecting plate 27, and a right connecting plate 28; the double-helix integrated lead screw 21 is axially connected to the side panels on both sides of the main frame 11; the first slide rail 22 is fixed to the side panels on both sides of the main frame 11; the double-helix integrated lead screw 21, the first slide rail 22 and the side panels of the auxiliary frame 12 are spatially parallel to each other; spatial parallelism here means that the double-helix integrated lead screw 21 and the first slide rail 22 are in the same plane, and the side panels of the auxiliary frame 12 and the double-helix integrated lead screw 21 and the first slide rail 22 are not in the same plane, but in a top-down view; the double-helix integrated lead screw 21, the first slide rail 22 are parallel to the side panels of the auxiliary frame 12;

[0021] The first servo motor 26 is fixed to a side plate of the main frame 11 and is drivingly connected to the double-helix integrated lead screw 21 through a coupling;

[0022] The double-helix integrated screw 21 is provided with a left screw 211, a right screw 212, and a midpoint limit 213; the left screw 211 and the right screw 212 are arranged on both sides of the midpoint limit 213; the central axes of the left screw 211, the right screw 212 and the midpoint limit 213 coincide; the left screw nut 23 is sleeved on the left screw 211; the right screw nut 24 is sleeved on the right screw 212; the first slider is provided with two left first sliders 251 and right first sliders 252; the left first slider 251 and the right first slider 252 are sleeved on the first slide rail 22;

[0023] The left connecting plate 27 and the right connecting plate 28 are symmetrical in structure; the left spiral nut 23 and the left first slider 251 are fixed to both ends of the left connecting plate 27 by bolts; the right spiral nut 24 and the right second slider 252 are fixed to both ends of the right connecting plate 28 by bolts.

[0024] A left first shaft sleeve through hole 271 is provided in the middle of the left connecting plate 27; a left first linkage shaft sleeve 272 is provided at the lower end of the left first shaft sleeve through hole 271, and the left first linkage shaft sleeve 272 is fixed to the left first shaft sleeve through hole 271 by bolts, and the axis of the left first linkage shaft sleeve 272 coincides with the axis of the left first shaft sleeve through hole 271;

[0025] A right first shaft sleeve through hole is provided in the middle of the right connecting plate 28; a right first linkage shaft sleeve 282 is provided at the lower end of the right first shaft sleeve through hole, and the right first linkage shaft sleeve 282 is fixed to the right first shaft sleeve through hole by bolts, and the axis of the right first linkage shaft sleeve 282 coincides with the axis of the right first shaft sleeve through hole;

[0026] That is, the first driving unit is a double-helical screw motion mechanism; the left spiral nut 23 and the right spiral nut 24 are respectively sleeved on the left spiral screw 211 and the right spiral screw 212 on the double-helical integrated screw 21; there are two first sliders, and the two first sliders are sleeved on the first slide rail 22; the left connecting plate 27 is fixedly connected to the left spiral nut 23 and one of the first sliders; the right connecting plate 28 is fixedly connected to the right spiral nut 24 and the other first slider; the output shaft of the first servo motor 26 is fixedly connected to the double-helical integrated screw 21; the first servo motor 26 drives the left connecting plate 27 and the right connecting plate 28 to move relative to each other;

[0027] The left connecting plate 27 is also provided with a left rectangular slide hole 273; the right connecting plate 28 is also provided with a rectangular slide hole; the positions of the rectangular slide holes provided on the left and right connecting plates can be set at any optimal position of the connecting plate without motion interference based on the analysis of the force borne by the lifting slide bar during lifting.

[0028] The second driving unit includes: a single screw screw 31, a second slide rail 32, a screw nut 33, a second slider 34, a second servo motor 35, and a linkage connecting plate 36;

[0029] The single spiral screw 31 is axially connected to the side plates on both sides of the auxiliary frame 12; there are two second slide rails 32, and the two ends of the second slide rails 32 are fixed to the side plates on both sides of the auxiliary frame 12; the nut 33 is sleeved on the single spiral screw 31; the two second slide rails 32 are each provided with a second slider 34; the nut 33 is locked at the lower end of the middle part of the linkage connecting plate 36; the two second sliders 34 are locked at both ends of the linkage connecting plate 36; the single spiral screw 31, the second slide rail 32, the left connecting plate 27 and the right connecting plate 28 are parallel to each other in space; the spatial parallelism here means that the single spiral screw 31 and the second slide rail 32 are in the same plane, the left connecting plate 27 and the right connecting plate 28 and the second slide rail 32 are not in the same plane, but in a top view; the single spiral screw 31, the second slide rail 32, the left connecting plate 27 and the right connecting plate 28 are parallel;

[0030] The linkage connecting plate 36 is provided with two symmetrical linkage slider grooves, a left linkage slider groove 361 and a right linkage slider groove 362. The left and right linkage slider grooves can also be made into through holes as required.

[0031] The lifting unit is provided with a lifting frame, a connecting rod connecting block and a connecting shaft sleeve; the lifting frame is divided into a left lifting frame 41 and a right lifting frame 44; the connecting rod connecting block is divided into a left connecting rod connecting block 42 and a right connecting rod connecting block 45; the connecting shaft sleeve is divided into a left connecting shaft sleeve 43 and a right connecting shaft sleeve 46; the lifting unit is also provided with a lifting frame connecting rod 47 and a lifting push rod 48;

[0032] The left lifting frame 41 and the right lifting frame 45 are symmetrical in structure; the left connecting rod connecting block 42 and the right connecting rod connecting block 45 are symmetrical in structure; the left connecting shaft sleeve 43 and the right connecting shaft sleeve 46 are symmetrical in structure;

[0033] The left lifting frame 41 has a left lifting slide bar 411 at the lower part; the left lifting slide bar 411 can slide up and down in the left rectangular slide bar hole 273; the left connecting rod connecting block 42 is fixed to the other end of the left lifting frame 41; the left lifting frame 41 has a left second shaft sleeve through hole 412 at the middle part; the left connecting shaft sleeve 43 is fixed at the left second shaft sleeve through hole 412;

[0034] A right lifting slide bar 421 is provided at the lower part of one end of the right lifting frame 41; the right lifting slide bar 421 can slide up and down in the rectangular slide bar hole on the right connecting plate 28; the right connecting frame rod connecting block 45 is fixed to the other end of the right lifting frame 44; a right second shaft sleeve through hole is provided in the middle of the right lifting frame 44; the right linkage shaft sleeve 46 is fixed at the right second shaft sleeve through hole;

[0035] The left connecting rod connecting block 42 and the right connecting rod connecting block 45 are connected through a lifting frame connecting rod 47; the lower end of a lifting push rod 48 is fixed to the bottom plate of the main frame 11; a telescopic rod 481 is provided on the lifting push rod 48, and the top of the telescopic rod 481 is sleeved on the lifting frame connecting rod 47; the left lifting frame 41 and the right lifting frame 45 are lifted and lowered in the vertical direction along the left and right connecting plates through the lifting push rod 48.

[0036] The linkage mechanism is provided with: a linkage shaft, a linkage shaft sheet, and a linkage spline shaft; the linkage shaft is divided into a left linkage shaft 51 and a right linkage shaft 54 ​​of the same structure; the linkage shaft sheet is divided into a left linkage shaft sheet 52 and a right linkage shaft sheet 55 of the same structure; the linkage spline shaft is divided into a left linkage spline shaft 53 and a right linkage spline shaft 56 of the same structure;

[0037] The left linkage shaft 51 and the right linkage shaft 54 ​​are symmetrical in structure; the left linkage spline shaft 53 and the right linkage spline shaft 56 are two components with the same structure; the left linkage shaft piece 53 and the right linkage shaft piece 56 are two components with the same structure;

[0038] The upper end of the left linkage shaft 51 is a left spline sleeve 511; the lower end of the left linkage shaft 51 is provided with a left linkage arm 512, and the lower end of the left linkage arm 512 is axially connected with a left linkage slider 513; the left linkage slider 513 is sleeved in the left linkage slider groove 361; the left linkage slider 513 slides in the left linkage slider groove 361; the top of the left linkage shaft 51 is provided with a left hoop 514; the left hoop 514 limits the left linkage shaft 51 from moving up and down;

[0039] The left spline sleeve 511 is axially connected to the left first linkage sleeve 272; the left linkage shaft piece 52 is provided with a spline through hole 521; both ends of the left linkage shaft piece 52 are provided with connecting rod shaft connection holes;

[0040] The left linkage spline shaft 53 is sleeved with the spline through hole 521, the left linkage sleeve 43 and the left spline sleeve 511 in sequence; the left linkage shaft piece 52 and the left linkage shaft 51 are synchronously deflected and linked in the same direction;

[0041] When the left lifting frame 41 drives the left linkage spline shaft 53 to rise and fall, the left linkage spline shaft 53 slides up and down synchronously in the left spline sleeve 511;

[0042] The upper end of the right linkage shaft 54 ​​is a right spline sleeve; the lower end of the right linkage shaft 54 ​​is provided with a right linkage arm 542, and the lower end of the right linkage arm 542 is axially connected with a right linkage slider; the right linkage slider is sleeved in the left linkage slider groove 362 and slides; a hoop is provided on the top of the right linkage shaft 54; the hoop limits the right linkage shaft 54 ​​from moving up and down;

[0043] The right spline sleeve is axially connected to the right first linkage sleeve 282; the right linkage shaft piece 55 is provided with a spline through hole; both ends of the right linkage shaft piece 55 are provided with connecting rod shaft connection holes;

[0044] The right linkage shaft piece 55 and the right linkage shaft 54 ​​are synchronously deflected and linked in the same direction;

[0045] When the right lifting frame 44 drives the right linkage spline shaft 56 to rise and fall, the right linkage spline shaft 56 slides up and down synchronously in the right spline sleeve.

[0046] The clamping mechanism is provided with a connecting rod, an adjustable connecting rod, a first clamping jaw and a second clamping jaw; the connecting rod is divided into a left connecting rod 61 and a right connecting rod 65 with the same symmetry in structure; the adjustable connecting rod is divided into a left adjustable connecting rod 62 and a right adjustable connecting rod 66 with the same symmetry in structure; the first clamping jaw is divided into a left first clamping jaw 63 and a right first clamping jaw 67 with the same symmetry in structure; the first clamping jaw is divided into a left second clamping jaw 64 and a right second clamping jaw 68 with the same symmetry in structure;

[0047] The left first clamping jaw 63 and the left second clamping jaw 64 are axially connected to the end of the left lifting frame 41; one end of the left first clamping jaw 63 and one end of the left second clamping jaw 64 can be meshed with each other; the other end of the left first clamping jaw 63 and the other end of the left second clamping jaw 64 are axially connected to the two ends of the left linkage shaft piece 52 through the left connecting rod 61 and the left adjustable connecting rod 62 respectively;

[0048] The right first clamping jaw 67 and the right second clamping jaw 68 are axially connected to the end of the right lifting frame 41; one end of the right first clamping jaw 67 and one end of the right second clamping jaw 68 can be meshed with each other; the other end of the right first clamping jaw 67 and the other end of the right second clamping jaw 68 are axially connected to the two ends of the right linkage shaft piece 55 through the right connecting rod 65 and the right adjustable connecting rod 66 respectively;

[0049] The left first clamping jaw 63 and the right first clamping jaw 67 have the same structure; the left second clamping jaw 64 and the right second clamping jaw 68 have the same structure; the left connecting rod 61 and the right connecting rod 65 have the same structure; the left adjustable connecting rod 62 and the right adjustable connecting rod 66 have the same structure;

[0050] That is, the linkage connecting plate moves linearly through the second driving unit; the left and right linkage sliders provided at the lower ends of the left and right linkage shafts slide in the linkage slider grooves provided on the linkage connecting plate; the linkage shaft drives the rotation of the linkage shaft piece; two linkage rods, a first clamping jaw and a second clamping jaw are provided on the lifting frames on both sides, and clamping teeth are provided on the first clamping jaw and the second clamping jaw; the clamping teeth of the first clamping jaw and the second clamping jaw can mesh with each other; the two linkage rods drive the first clamping jaw and the second clamping jaw to clamp through the rotation of the linkage shaft piece.

Claims

1. A clamp for an injection molding machine, comprising: A frame (1), a first drive unit, a second drive unit, a lifting unit, a linkage mechanism, and a clamping mechanism; the characteristics are: the frame (1) comprises: a main frame (11), a sub-frame (12), the sub-frame (12) being sleeved on a bottom plate of the main frame (11); the first drive unit is arranged on the main frame (11); the second drive unit is arranged on the sub-frame (12); the first drive unit is provided with a connecting plate, and the lifting unit is provided with a lifting frame and a lifting push rod; the linkage mechanism is provided on the lifting frame, and the lifting push rod drives the lifting frame to slide vertically on the connecting plate; the clamping mechanism is provided with a first clamping claw and a second clamping claw, and the linkage mechanism drives the first clamping claw and the second clamping claw to clamp.

2. A clamp for an injection molding machine according to claim 1, characterized in that: The first drive unit is a double-helix screw motion mechanism; the first drive unit is provided with a double-helix integrated screw (21), a first slide rail (22), a first servo motor (26), a left connecting plate (27) and a right connecting plate (28); the left connecting plate (27) and the right connecting plate (28) are respectively connected to the double-helix integrated screw (21) and the first slide rail (22) via left-hand and right-hand screw nuts and sliders; the output shaft of the first servo motor (26) is fixedly connected to the double-helix integrated screw (21); the left connecting plate (27) and the right connecting plate (28) are symmetrical and identical; the first servo motor (26) drives the left connecting plate (27) and the right connecting plate (28) to move relative to each other.

3. A clamp for an injection molding machine according to claim 2, characterized in that: The lifting unit is provided with a lifting frame, a connecting rod connecting block and a linkage sleeve, a lifting frame connecting rod and a lifting push rod; the left connecting plate (27) and the right connecting plate (28) are both provided with a lifting frame, a connecting rod connecting block and a linkage sleeve; the left and right lifting frames are symmetrical and the same; a lifting slide bar is provided at the lower part of the lifting frame, and the connecting rod connecting block is arranged at one end of the lifting frame; a second sleeve through hole is provided on the lifting frame, and the linkage sleeve is arranged at the second sleeve through hole; the left and right connecting plates are both provided with a first sleeve through hole; the left and right lifting frames are provided with a second sleeve through hole; the axis center lines of the first sleeve through hole, the second sleeve through hole and the linkage sleeve coincide; the connecting rod connecting block is connected to the lifting push rod through the lifting frame connecting rod; the left and right lifting frames are lifted and lowered along the vertical direction of the left and right connecting plates through the lifting push rod.

4. A clamp for an injection molding machine according to claim 3, characterized in that: The second drive unit is a single screw screw motion mechanism; the second drive unit is provided with: a second servo motor (35), a linkage connection plate (36), and a linkage slide groove is provided on the linkage connection plate (36); the linkage slide groove is linearly reciprocated by the second servo motor (35).

5. A clamp for an injection molding machine according to claim 4, characterized in that: The linkage mechanism comprises: a linkage shaft, a linkage shaft sheet, and a linkage spline shaft; the left and right lifting frames are both provided with symmetrical and identical linkage shafts, linkage shaft sheets, and linkage spline shafts; the upper end of the linkage shaft is a spline sleeve; the lower end of the linkage shaft is provided with a linkage arm, and the lower end of the end of the linkage arm is axially connected to a linkage slider; the left and right linkage sliders are sleeved in the linkage slider grooves on the linkage connecting plate (36); the spline sleeve is axially connected to the linkage shaft sleeve; the linkage shaft sheet is provided with a spline through hole; the linkage spline shaft is sleeved with the spline through hole, the linkage shaft sleeve and the spline sleeve in sequence; when the lifting frame drives the linkage spline shaft to rise and fall, the linkage spline shaft slides up and down synchronously in the spline sleeve.

6. A clamp for an injection molding machine according to claim 5, characterized in that: The clamping mechanism is also provided with a linkage rod and an adjustable linkage rod; the ends of the left and right lifting frames are both axially connected with a first clamping jaw and a second clamping jaw; the other end of the first clamping jaw and the other end of the second clamping jaw are axially connected to the two ends of the linkage shaft piece through the linkage rod and the adjustable linkage rod respectively; the linkage shaft piece and the linkage shaft (51) are synchronously deflected in the same direction to drive one end of the first clamping jaw and one end of the second clamping jaw to mesh with each other.

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