Crank sliding block pressure maintaining device of mechanical press

Abstract

The utility model belongs to the technical field of press machines, and particularly relates to a mechanical press crank sliding block pressure maintaining device which comprises a crank mechanism, a connecting rod and a pressing piece, one end of the connecting rod is connected with the crank mechanism, the pressing piece is arranged at the bottom end of the connecting rod, and the mechanical press crank sliding block pressure maintaining device is characterized in that a lifting mechanism is arranged in the connecting rod; the lifting mechanism comprises a lead screw, a worm gear, a worm and a sliding rod, the lead screw is connected to the top of the inner wall of the connecting rod through a bearing, the worm gear sleeves the top of the surface of the lead screw, the worm is engaged with one side of the worm gear, one end of the worm is connected to the inner wall of the connecting rod through a bearing, and the other end of the worm penetrates to the outer side of the connecting rod; the sliding rod is in threaded connection with the surface of the lead screw. The utility model provides a mechanical press crank sliding block holding and pressing retaining device which can adjust a connecting rod and ensure that a workpiece has enough pressing force in the forming process in the process of stamping a formed part.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of press machine, concretely relates to a mechanical press machine crank slider pressure holding device. BACKGROUND

[0002] The press machine is a kind of mechanical equipment for exerting pressure to shape or process material, and common press machine can be divided into mechanical press machine, hydraulic press machine, pneumatic press machine and electric press machine, and is widely used in metal processing, plastic forming, wood processing and other industries.

[0003] The crank slider is the key component in mechanical press machine, it is converted into the linear motion of slider by the rotary motion of crank, and common crank eccentricity is fixed, when crank drives connecting rod and lower pressure piece in the stamping process, the pressure will be weakened with the distance far away after slider reaches the lowest point, and it cannot guarantee that workpiece obtains enough pressing force in the forming process, so the mechanical press machine crank slider pressure holding device is provided to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of mechanical press machine crank slider pressure holding device, can adjust connecting rod, guarantee workpiece in the forming process has enough pressing force in the process of stamping forming piece.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of mechanical press machine crank slider pressure holding device, including crank mechanism, connecting rod and lower pressure piece, the one end of connecting rod is connected with crank mechanism, the lower pressure piece is set to the bottom of connecting rod, the inside of connecting rod is provided with lifting mechanism;The lifting mechanism includes screw rod, worm wheel, worm and sliding rod, the screw rod is connected to the top of connecting rod inner wall by bearing, the worm wheel is set to the top of the surface of screw rod, the worm is engaged to be connected on one side of worm wheel, one end of the worm is connected to the inner wall of connecting rod by bearing, the other end of the worm is penetrated to the outside of connecting rod, the sliding rod is screw connected to the surface of screw rod, the sliding rod is slidingly connected to the inside of connecting rod, the bottom of sliding rod is penetrated to the bottom of connecting rod and is connected with lower pressure piece.

[0007] Preferably, the front side and the back side of the inner wall of the sliding rod are fixedly connected with limit blocks, and the front side and the back side of the inner wall of the connecting rod are provided with limit grooves matched with the limit blocks.

[0008] Preferably, the end of the worm is sleeved with a knob, and the knob is circular in shape.

[0009] Preferably, the inner wall of the knob is fixedly connected with a protrusion, the surface of the worm is provided with a sliding groove, and the protrusion is slidably connected in the sliding groove.

[0010] Preferably, the inner wall of the knob is fixedly connected with a protrusion, the surface of the worm is provided with a sliding groove, and the protrusion is slidably connected in the sliding groove.

[0011] Preferably, the surface of the screw rod is sleeved with a supporting piece, and the supporting piece is fixedly connected in the inner portion of the sliding rod.

[0012] Preferably, the surface of the screw rod is sleeved with a limiting ring, and the limiting ring is located at the top and the bottom of the worm respectively.

[0013] The utility model discloses the technical effect achieved is:

[0014] The utility model discloses the lifting mechanism cooperation uses, when staff uses the press, the crank mechanism will drive connecting rod rotation around the crank block and rotate, and can make connecting rod cyclically move up and down under the limiting of the limiting mechanism to the down pressure piece, when connecting rod moves, simultaneously can drive sliding rod and down pressure piece and move up and down, when the crank drives connecting rod and down pressure piece and stamping to accessory, to prevent the crank block from driving connecting rod from reaching the most lower point after the insufficient pressure, staff can adjust the length of sliding rod in connecting rod, when adjusting, can rotate the worm, and worm rotation will drive the meshed worm wheel rotation, and worm wheel rotation will drive screw rod rotation simultaneously, and screw rod rotation can drive the sliding rod of screw connection in the inside of connecting rod and move down, and sliding rod moves down, can lengthen the distance of connecting rod and move down, make the crank block drive connecting rod and down pressure piece and keep enough pressure, thereby can optimize the stamping process.

[0015] The utility model discloses the protrusion and sliding groove cooperation uses, can make the knob flexible sliding on the surface of the worm, and also can limit the knob on the surface of the worm under the cooperation of the protrusion and the sliding groove, prevent the knob from rotating and slipping on the surface of the worm, and affect the normal operation of the lifting mechanism.

[0016] The utility model discloses the fixed block and fixed slot are set, when adjusting the length of sliding rod, staff can connect the fixed block in the inside of fixed slot in the inner side of the knob, thereby can limit the knob, and also fix and limit the worm under the cooperation of the protrusion and the sliding groove, prevent the knob and the worm from rotating when the press works, and automatically adjust the sliding rod and affect the normal operation of the machine. ACCURACY

[0017] Figure 1 It is the whole structure three-dimensional schematic diagram of the utility model;

[0018] Figure 2Is the utility model side view cross section three-dimensional schematic diagram;

[0019] Figure 3 Is the utility model Figure 2 Enlarged three-dimensional schematic view of A in the middle;

[0020] Figure 4 Is the utility model knob and worm split three-dimensional schematic diagram.

[0021] In the drawings, the component list represented by each sign is as follows:

[0022] 1, crank mechanism;2, connecting rod;201, screw;202, worm wheel;203, worm;204, sliding rod;205, knob;206, limit block;207, limit groove;3, down pressure piece;301, protruding block;302, sliding slot;401, fixed block;402, fixed slot;5, support piece;6, limit ring. Specific embodiments

[0023] In order to make the purpose and the advantage of the utility model more clearly, the following is specifically explained to the utility model with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model specifically requested.

[0024] For example, the utility model discloses a kind of crank mechanism, including fixed block 401, fixed slot 402, support piece 5, limit ring 6, connecting rod 2, sliding rod 204, worm 203, worm wheel 202, screw 201, knob 205, limit block 206, down pressure piece 3, limit groove 207 and protruding block 301, it is characterized in that: the fixed block 401 is fixedly connected on the support piece 5, the fixed slot 402 is formed in the fixed block 401, the connecting rod 2 is pivotally connected on the fixed block 401, the sliding rod 204 is pivotally connected on the connecting rod 2, the worm 203 is pivotally connected on the sliding rod 204, the worm wheel 202 is pivotally connected on the worm 203, the screw 201 is pivotally connected on the worm wheel 202, the knob 205 is pivotally connected on the screw 201, the limit block 206 is pivotally connected on the connecting rod 2, the down pressure piece 3 is pivotally connected on the connecting rod 2, the limit groove 207 is formed in the connecting rod 2, the protruding block 301 is pivotally connected on the connecting rod 2. Figures 1-4As shown, a mechanical press crank slider holding device, including crank mechanism 1, connecting rod 2 and lower pressure piece 3, one end of connecting rod 2 is connected with crank mechanism 1, lower pressure piece 3 is arranged at the bottom end of connecting rod 2, the inside of connecting rod 2 is provided with lifting mechanism; the lifting mechanism comprises screw rod 201, worm gear 202, worm 203, sliding rod 204 and knob 205, screw rod 201 is connected to the top of the inner wall of connecting rod 2 through bearing, worm gear 202 is sleeved on the top of the surface of screw rod 201, worm 203 is engaged with one side of worm gear 202, one end of worm 203 is connected to the inner wall of connecting rod 2 through bearing, the other end of worm 203 penetrates to the outside of connecting rod 2, sliding rod 204 is threadedly connected to the surface of screw rod 201, sliding rod 204 is slidingly connected to the inside of connecting rod 2, the bottom end of sliding rod 204 penetrates to the bottom of connecting rod 2 and is connected with lower pressure piece 3, when the staff uses the press, the crank mechanism 1 will drive the connecting rod 2 to rotate around the crank block, and under the limiting of the limiting mechanism to the lower pressure piece 3, the connecting rod 2 can be moved up and down circularly, the connecting rod 2 will drive the sliding rod 204 and the lower pressure piece 3 to move up and down at the same time when the connecting rod 2 moves, when the crank drives the connecting rod 2 and the lower pressure piece 3 to stamp the fittings, in order to prevent the crank block from driving the connecting rod 2 to have insufficient pressure after reaching the lowest point, the staff can adjust the length of the sliding rod 204 in the connecting rod 2, when adjusting, the worm 203 can be rotated, the rotation of the worm 203 will drive the engaged worm gear 202 to rotate, the rotation of the worm gear 202 will drive the screw rod 201 to rotate at the same time, the rotation of the screw rod 201 can drive the threadedly connected sliding rod 204 to move downward in the connecting rod 2, the downward movement of the sliding rod 204 can lengthen the downward movement distance of the connecting rod 2, and can adjust the pressure applied to the workpiece, adapt to different materials and processing requirements, make the crank block drive the connecting rod 2 and the lower pressure piece 3 to maintain sufficient pressure, so as to optimize the stamping process.

[0025] As shown in Figures 2-3 the front side and the rear side of the inner wall of the sliding rod 204 are fixedly connected with limiting blocks 206, the front side and the rear side of the inner wall of the connecting rod 2 are provided with limiting grooves 207 matched with the limiting blocks 206, when the screw rod 201 drives the sliding rod 204 to slide in the connecting rod 2, the sliding rod 204 can be vertically moved under the cooperation of the limiting blocks 206 and the limiting grooves 207, preventing the sliding rod 204 from deviating when moving.

[0026] As shown in Figures 2-4 the end of the worm 203 is sleeved with the knob 205, the knob 205 is circular in shape, which can provide a comfortable and convenient grip point for the staff, facilitating the staff to rotate the worm 203 through the knob 205.

[0027] As shown in Figure 4As shown, the inner wall of the knob 205 is fixedly connected with a protrusion 301, the surface of the worm 203 is provided with a sliding groove 302, the protrusion 301 is slidingly connected in the inside of the sliding groove 302, the cooperation of the protrusion 301 and the sliding groove 302 can make the knob 205 flexibly slide on the surface of the worm 203, and at the same time, under the cooperation of the protrusion 301 and the sliding groove 302, the knob 205 can also be limited on the surface of the worm 203, preventing the knob 205 from rotating and slipping on the surface of the worm 203, and affecting the normal operation of the lifting mechanism.

[0028] As shown in the Figure 4 , the inner side of the knob 205 is fixedly connected with a fixed block 401, one side of the connecting rod 2 is provided with a fixed slot 402, and the fixed slot 402 is used in cooperation with the fixed block 401. When the length of the sliding rod 204 is adjusted, the staff can clamp the fixed block 401 on the inside of the fixed slot 402, thereby limiting the knob 205, and at the same time, under the cooperation of the protrusion 301 and the sliding groove 302, the worm 203 is fixedly limited, preventing the knob 205 and the worm 203 from rotating when the press is working, and automatically adjusting the sliding rod 204 to affect the normal operation of the machine.

[0029] As shown in the Figures 2-3 , the surface of the screw rod 201 is sleeved with a support 5, and the support 5 is fixedly connected in the inside of the sliding rod 204. It can enhance the connection stability of the screw rod 201 and the connecting rod 2, and assist in supporting the screw rod 201, preventing the screw rod 201 from shaking in the inside of the connecting rod 2 when rotating.

[0030] As shown in the Figures 2-3 , the surface of the screw rod 201 is sleeved with a limiting ring 6, and the limiting ring 6 is located at the top and bottom of the worm 203 respectively. When the worm 202 drives the screw rod 201 to rotate at the same time, in order to prevent the worm 202 and the screw rod 201 from being worn out after long time connection and rotation, the worm 202 can be assisted and limited on the surface of the screw rod 201 under the action of the limiting ring 6, avoiding the displacement of the worm 202 on the surface of the screw rod 201.

[0031] The utility model discloses a working principle is: when staff uses the press, the crank mechanism 1 will drive connecting rod 2 rotation around the crank block and can make connecting rod 2 cyclically move up and down under the limiting of the limiting mechanism to down pressure piece 3, when connecting rod 2 moves, simultaneously can drive sliding rod 204 and down pressure piece 3 move up and down, when the crank drives connecting rod 2 and down pressure piece 3 stamping to the accessory, to prevent the crank block drive connecting rod 2 from reaching the most point after the insufficient pressure, staff can adjust the length of sliding rod 204 in connecting rod 2, when adjusting, can rotate worm 203, and worm 203 rotation will drive meshed worm wheel 202 rotation, and worm wheel 202 rotation will drive lead screw 201 rotation simultaneously, and screw rod 201 rotation can drive the sliding rod 204 of screw connection in the inside of connecting rod 2 and move down, and sliding rod 204 moves down, can lengthen the distance of connecting rod 2 and move down, make the crank block drive connecting rod 2 and down pressure piece 3 keep enough pressure, to be able to optimize the stamping process.

[0032] The above is only the preferred implementation of the utility model, it should be pointed out that for the ordinary skill of the prior art, on the premise of not departing from the principle of the utility model, still can make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the utility model. The structure, device and operating method not specifically described and explained in the utility model, are implemented according to conventional means in the field, unless specifically stated and limited.

Claims

1. A crank slider pressure holding device of a mechanical press, comprising a crank mechanism (1), a connecting rod (2) and a lower presser (3), one end of the connecting rod (2) is connected with the crank mechanism (1), the lower presser (3) is arranged at the bottom end of the connecting rod (2), characterized in that: The inside of the connecting rod (2) is provided with a lifting mechanism; The lifting mechanism comprises a lead screw (201), a worm wheel (202), a worm (203) and a sliding rod (204), the lead screw (201) is connected to the top of the inner wall of the connecting rod (2) through a bearing, the worm wheel (202) is sleeved on the top surface of the lead screw (201), the worm (203) is engaged on one side of the worm wheel (202), one end of the worm (203) is connected to the inner wall of the connecting rod (2) through a bearing, the other end of the worm (203) penetrates to the outside of the connecting rod (2), the sliding rod (204) is threadedly connected to the surface of the lead screw (201), the sliding rod (204) is slidingly connected to the inside of the connecting rod (2), and the bottom end of the sliding rod (204) penetrates to the bottom of the connecting rod (2) and is connected with the pressing piece (3).

2. A mechanical press crank slider hold-down retaining device according to claim 1, characterized in that: The front side and the rear side of the inner wall of the sliding rod (204) are fixedly connected with limit blocks (206), and the front side and the rear side of the inner wall of the connecting rod (2) are provided with limit grooves (207) matched with the limit blocks (206).

3. A mechanical press crank slider hold-down device according to claim 1, characterized in that: The end of the worm (203) is sleeved with a knob (205), and the knob (205) is circular in shape.

4. A mechanical press crank and slider hold-down retaining device according to claim 3, characterized in that: The inner wall of the knob (205) is fixedly connected with a protruding block (301), the surface of the worm (203) is provided with a sliding groove (302), and the protruding block (301) is slidingly connected in the sliding groove (302).

5. A mechanical press crank slider hold-down device according to claim 3, characterized in that: The inner side of the knob (205) is fixedly connected with a fixed block (401), one side of the connecting rod (2) is provided with a fixed groove (402), and the fixed groove (402) is matched with the fixed block (401).

6. A mechanical press crank slider hold-down device according to claim 1, characterized in that: The surface of the lead screw (201) is sleeved with a supporting piece (5), and the supporting piece (5) is fixedly connected to the inside of the sliding rod (204).

7. A mechanical press crank slider hold-down device according to claim 1, characterized in that: The surface of the lead screw (201) is sleeved with a limiting ring (6), and the limiting ring (6) is located at the top and the bottom of the worm (203) respectively.

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