Combined cam stretcher

Abstract

A combined cam stretcher comprises a base, an upper beam, a stand column, a main shaft, a driving mechanism, a cam transmission mechanism and a sliding block, the stand column is detachably connected between the base and the upper beam, and the two ends of the main shaft are rotationally supported by the upper beam; the cam transmission mechanism is detachably mounted on the main shaft; one end of the main shaft is connected with a driving mechanism and is driven by the driving mechanism; the sliding blocks comprise the upper sliding block and the lower sliding block, the upper sliding block is detachably connected with the cam transmission mechanism, the lower sliding block is fixed to the bottom plane of the upper sliding block, and the upper die is installed on the lower sliding block. Due to the fact that the base, the upper beam, the stand column, the main shaft, the driving mechanism, the cam transmission mechanism and the sliding block are all detachable, the stand column, the main shaft, the driving mechanism, the cam transmission mechanism, the sliding block and the like are changed according to actual conditions, and the adaptability of products is improved.

Description

Technical Field

[0001] This invention relates to a cam stretching machine. Background Technology

[0002] A cam stretching machine is a mechanical device that uses a cam mechanism to stretch materials. Existing cam stretching machines generally include a machine base and a cam stretching mechanism. The cam stretching mechanism is fixed on the machine base. Due to the fixed connection, its applicability is limited by factors such as the height of the machine base, the height of the fixed die, and the cam stretching mechanism. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a combined cam stretching machine with strong adaptability.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A combined cam stretching machine is characterized by comprising a base, an upper beam, a column, a main shaft, a drive mechanism, a cam transmission mechanism, and a slider. The column is detachably connected between the base and the upper beam, and both ends of the main shaft are rotatably supported by the upper beam. The cam transmission mechanism is detachably mounted on the main shaft. One end of the main shaft is connected to and driven by the drive mechanism. The slider includes an upper slider and a lower slider. The upper slider is detachably connected to the cam transmission mechanism, and the lower slider is fixed on the bottom plane of the upper slider, on which the upper mold is mounted.

[0005] More specifically, the upper end of the column is screwed with an upper nut and the lower end is screwed with a lower nut. Tightening the upper and lower nuts tightens the upper beam and the base.

[0006] Furthermore, a protruding end is provided in the middle of the column, and the protruding end face fits against the lower part of the upper beam and supports the upper beam. In this way, the mold height of the cam press can be adjusted by changing the height of the middle section of the column and changing the distance between the slider and the base.

[0007] Furthermore, a shim is provided between the protruding end face and the upper beam. By adjusting the thickness of the shim, the mold closing height of the press can be changed, and the parallelism of the upper beam can be better guaranteed.

[0008] Furthermore, the drive mechanism includes a planetary reducer, a flywheel, an intermediate transmission mechanism, and a motor mounted on the main shaft. The motor is mounted on the upper beam, and the intermediate transmission mechanism is mounted on its output shaft. The intermediate transmission mechanism is a pulley, which is connected to the flywheel via a belt. The planetary reducer is connected to the main shaft, and the flywheel is connected to the planetary reducer.

[0009] Furthermore, the drive mechanism may also include a planetary reducer and a servo motor, with the servo motor mounted on the upper beam and its output shaft connected to the planetary reducer, which is connected to the main shaft.

[0010] Furthermore, the cam transmission mechanism includes a cam, an upper follower wheel, and a lower follower wheel. The cam is mounted on a main shaft, and the upper and lower follower wheels are located at the upper and lower parts of the cam, respectively. The upper and lower follower wheels are supported by a slider. The follower wheels are always in contact with the cam, thereby driving the slider to move up and down to complete the stretching action.

[0011] Furthermore, the cam transmission mechanism includes a conjugate cam, an upper follower wheel, a rocker arm, a first lower follower wheel, and a second lower follower wheel. The conjugate cam includes a driving cam and a driven cam, which are mounted on a main shaft. The upper follower wheel is rotatably supported by a slider and is located above the driven cam, maintaining constant contact with it. The lower part of the rocker arm is rotatably supported by a slider, and two fixed shafts are mounted on its upper part. The first and second lower follower wheels are rotatably supported by fixed shafts and are located below the driving cam, maintaining constant contact with it. The two lower follower wheels are symmetrically arranged relative to the centerline of the driving cam.

[0012] Compared with the prior art, the advantages of this invention are as follows: Since the base, upper beam, column, main shaft, drive mechanism, cam transmission mechanism, and slider are all detachable, the die height of the cam stretching machine can be changed by altering the height of the column, resulting in strong adaptability; by changing the size and structure of the lower slider, different production requirements can be met, demonstrating strong adaptability and good versatility, which is conducive to modular production; by setting different drive mechanisms, it helps to meet the different needs of different customers; and by adopting a conjugate cam and setting two lower following wheels, the load-bearing capacity of the mechanism is increased. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a combined cam stretching machine according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of a combined cam stretching machine drive mechanism according to an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of another embodiment of a combined cam stretching machine drive mechanism according to an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of another embodiment of the cam transmission mechanism of a combined cam stretching machine according to an embodiment of the present invention.

[0017] Figure 5 for Figure 4 The right view. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, a combined cam stretching machine includes: a base 1, an upper beam 2, and a column 3.

[0020] The upper beam 2 is installed on the base 1, and the two are connected by columns 3. Each upper beam 2 has a column 3 at each of its four corners. One end of the column 3 extends out of the upper beam 2 and the other end extends into the base 1. The upper end of the column 3 is screwed with an upper nut 4 and the lower end is screwed with a lower nut 5. By tightening the upper nut 4 and the lower nut 5, the upper beam 2 and the base 1 are tightened together.

[0021] The protruding end face 301 in the middle of the column fits against the lower part of the upper beam 2 and supports the upper beam 2. In this way, by changing the height of the middle section 302 of the column 3, the distance between the slider and the base 1 can be changed, thereby adjusting the mold height of the cam press and making it more adaptable.

[0022] To better ensure the parallelism of the upper beam 2, a shim is placed between the end face 301 and the upper beam 2. By adjusting the thickness of the shim, the mold closing height of the press can be changed, and the parallelism of the upper beam 2 can be better ensured.

[0023] The two ends of the main shaft 6 are rotatably supported by the upper beam 2. A cam transmission mechanism 7 is installed on the main shaft 6. The cam transmission mechanism 7 is connected to the slider. The slider is an upper slider 80 and a lower slider 81. The upper slider 80 is connected to the cam transmission mechanism 7. The lower slider 81 is fixed on the bottom plane of the upper slider 80, and the upper mold is installed on it.

[0024] This way, when the mold equipped on the cam press changes, only the lower slide block 81 needs to be removed and replaced with another lower slide block 81 that matches the mold, instead of replacing the entire slide block. This makes it more adaptable and convenient. At the same time, because of the split slide block design, the manufacturing of the slide block is also much easier, which is also conducive to modular production.

[0025] One end of the main shaft 6 is connected to the drive mechanism, which includes a planetary reducer 601, a flywheel 602, an intermediate transmission mechanism 603, and a motor 604 mounted on the main shaft 6. The motor 604 is mounted on the upper beam 2, and the intermediate transmission mechanism 603 is mounted on its output shaft. The intermediate transmission mechanism 603 is a pulley, which is connected to the flywheel 602 by a belt. The planetary reducer 601 is connected to the main shaft 6, and the flywheel 602 is connected to the planetary reducer 601. In this way, the motor 604 drives the pulley to rotate, which in turn drives the flywheel 602 to rotate via the belt. The increased torque is then transmitted to the main shaft 6 through the planetary reducer 601, causing the main shaft 6 to rotate. This, in turn, drives the cam transmission mechanism 7 to move the slider up and down, completing the stretching action.

[0026] The drive mechanism may also include a planetary reducer 601 and a servo motor 605. The servo motor 605 is mounted on the upper beam 2, and its output shaft is connected to the planetary reducer 601. The planetary reducer 601 is connected to the main shaft 6, so that the servo motor 605 directly drives the main shaft 6 to rotate through the planetary reducer 601.

[0027] The above structure allows for the selection of different drive mechanisms to meet varying needs, including cost requirements and accuracy requirements.

[0028] When the spindle 6 is particularly long, a set of drive mechanisms can be connected to each end of the spindle 6, which helps to ensure the accuracy and tensile force of the equipment.

[0029] The cam transmission mechanism 7 includes a cam 701, an upper follower wheel 702, and a lower follower wheel 703. The cam 701 is mounted on the main shaft 6. The upper follower wheel 702 and the lower follower wheel 703 are located at the upper and lower parts of the cam 701, respectively. The upper and lower follower wheels are supported by the slider. The follower wheels are always in contact with the cam 701, thereby driving the slider to move up and down to complete the stretching action.

[0030] To enhance load-bearing capacity, such as Figure 4 and 5 As shown, the cam transmission mechanism 7 includes a conjugate cam, an upper follower wheel 702, a rocker arm 704, a first lower follower wheel 703, and a second lower follower wheel 703'.

[0031] The conjugate cam includes a driving cam 701 and a driven cam 701', which are mounted on the main shaft 6. The upper follower wheel 702 is rotatably supported by a slider, located above the driven cam 701' and in constant contact with it. The lower part of the rocker arm 704 is rotatably supported by a slider, and two fixed shafts 7031 and 7032 are mounted on its upper part. The first lower follower wheel 703 and the second lower follower wheel 703' are rotatably supported by the fixed shafts 7031 and 7032, respectively, located below the driving cam 701 and in constant contact with it. The two lower follower wheels 703 and 703' are symmetrically arranged relative to the center line of the driving cam 701. Thus, by adjusting the center distance L, the upper and lower follower wheels can be pressed tightly against their respective cam profiles, thereby ensuring the accuracy and reliability of the transmission.

[0032] During operation, as the slider descends, the first lower follower wheel 703 and the second lower follower wheel 703' simultaneously serve as power transmission elements of the cam drive mechanism. The simultaneous operation of the two lower follower wheels increases the load-bearing capacity of the mechanism.

Claims

1. A combined cam stretching machine, characterized in that: The system includes a base, an upper beam, a column, a main shaft, a drive mechanism, a cam transmission mechanism, and a slider. The column is detachably connected between the base and the upper beam. The two ends of the main shaft are rotatably supported by the upper beam. The cam transmission mechanism is detachably mounted on the main shaft. One end of the main shaft is connected to and driven by the drive mechanism. The slider includes an upper slider and a lower slider. The upper slider is detachably connected to the cam transmission mechanism, and the lower slider is fixed on the bottom plane of the upper slider, on which the upper mold is mounted.

2. The combined cam stretching machine as described in claim 1, characterized in that: The upper end of the column is screwed with an upper nut, and the lower end is screwed with a lower nut. Tightening the upper and lower nuts tightens the upper beam and the base.

3. The combined cam stretching machine as described in claim 1, characterized in that: The column has a protruding end in the middle, and the protruding end face fits against the lower part of the upper beam and supports the upper beam.

4. The combined cam stretching machine as described in claim 1, characterized in that: The drive mechanism includes a planetary reducer, a flywheel, an intermediate transmission mechanism, and a motor mounted on the main shaft. The motor is mounted on the upper beam, and the intermediate transmission mechanism is mounted on its output shaft. The intermediate transmission mechanism is a pulley, which is connected to the flywheel via a belt. The planetary reducer is connected to the main shaft, and the flywheel is connected to the planetary reducer.

5. The combined cam stretching machine as described in claim 1, characterized in that: The drive mechanism includes a planetary reducer and a servo motor. The servo motor is mounted on the upper beam, and its output shaft is connected to the planetary reducer. The planetary reducer is connected to the main shaft.

6. The combined cam stretching machine as described in claim 1, characterized in that: The cam transmission mechanism includes a cam, an upper follower wheel, and a lower follower wheel. The cam is mounted on a main shaft. The upper and lower follower wheels are located at the upper and lower parts of the cam, respectively. The upper and lower follower wheels are supported by a slider. The follower wheels are always in contact with the cam, thereby driving the slider to move up and down to complete the stretching action.

7. The combined cam stretching machine as described in claim 1, characterized in that: The cam transmission mechanism includes a conjugate cam, an upper follower wheel, a rocker arm, a first lower follower wheel, and a second lower follower wheel. The conjugate cam includes a driving cam and a driven cam, which are mounted on a main shaft. The upper follower wheel is rotatably supported by a slider and is located above the driven cam, maintaining constant contact with it. The lower part of the rocker arm is rotatably supported by a slider, and two fixed shafts are mounted on its upper part. The first and second lower follower wheels are rotatably supported by fixed shafts and are located below the driving cam, maintaining constant contact with it. The two lower follower wheels are symmetrically arranged relative to the center line of the driving cam.

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