Pre-screwing machine for compressor cylinder cover

Abstract

The utility model discloses a compressor cylinder cover pre-screwing machine, which belongs to the technical field of compressors and comprises a machine frame, a bit cover plate, an upper mounting plate and a lower mounting plate are sequentially mounted on the machine frame from top to bottom, a driving element is mounted on the lower mounting plate, and a gear box connected with an output shaft of the driving element is detachably mounted on the upper mounting plate. A plurality of output shafts are arranged on the gear box, and bits are mounted on the plurality of output shafts on the gear box, extend out of the bit cover plate and extend outwards; and a height adjusting block which can be adjusted up and down relative to the screwdriver head cover plate is also mounted on the rack. According to the pre-screwing device, compressor cylinder covers of different sizes can be pre-screwed at the same time, manual labor is relieved, only a gearbox and a bit cover plate need to be integrally replaced according to compressors of different sizes, and remodeling is fast and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a compressor cylinder cover pre-tightening machine. Background Art

[0002] The compressor is a major component of household appliances such as air conditioners and water dispensers that use a refrigeration cycle system. There are many types of compressors, resulting in a large number of installation sizes for the compressor valve groups. During the assembly process of these compressors, a pre-tightening device is often required to pre-tighten the cylinder head. However, since the sizes of different types of compressors are also different, there is an urgent need for a pre-tightening device that can be used for multiple models of compressors at the same time. Utility Model Content

[0003] The purpose of the utility model is to provide a compressor cylinder head pre-tightening machine, which can pre-tighten compressor cylinder heads of different sizes at the same time, reducing manual labor. For compressors of different sizes, only the gear box and the screwdriver cover need to be replaced as a whole, and the changeover is quick and convenient.

[0004] In order to achieve the purpose of the utility model, the technical solution adopted is: a compressor cylinder head pre-tightening machine, comprising a frame, on which a screwdriver bit cover, an upper mounting plate, and a lower mounting plate are installed in sequence from top to bottom, a driving element is installed on the lower mounting plate, and a gear box connected to the output shaft of the driving element is detachably installed on the upper mounting plate, and the gear box has multiple output shafts, and screwdriver bits are installed on the multiple output shafts on the gear box, and the screwdriver bits extend outward from the screwdriver bit cover; the frame is also equipped with a height adjustment block that can be adjusted up and down relative to the screwdriver bit cover.

[0005] Furthermore, the frame includes a chassis body and a chassis cover, the upper mounting plate, the lower mounting plate and the gear box are all installed in the chassis body, and the height adjustment block and the bit cover are both installed on the chassis cover.

[0006] Furthermore, at least two bolts are installed on the height adjustment block, the bolts pass through the box cover and extend downward, and nuts are installed on the extended ends of the bolts; a spring is also sleeved on the bolts, and the two ends of the spring are respectively pressed against the box cover and the height adjustment block.

[0007] Furthermore, a beam switch is installed on the box cover, and the beam switch is located on the outside of the bit cover.

[0008] Furthermore, the box cover and the upper mounting plate, and the upper mounting plate and the lower mounting plate are connected via connecting rods.

[0009] Furthermore, the output shaft of the driving element is connected to the input shaft of the gear box through a coupling.

[0010] Furthermore, grooves are provided on opposite sides of the gear box or around the four sides of the gear box.

[0011] Furthermore, the box cover is provided with a through hole adapted to the gear box, and opposite sides of the through hole are provided with avoidance grooves.

[0012] Furthermore, the gearbox includes a first mounting plate and a second mounting plate stacked in sequence from bottom to top, the input shaft and the output shaft of the gearbox are both rotatably mounted on the first mounting plate, and the transmission structure between the input shaft and the output shaft of the gearbox is jointly accommodated in the first mounting plate and the second mounting plate, and the output shaft of the gearbox extends outward through the second mounting plate.

[0013] Furthermore, the gear box is further stacked with at least a third mounting plate and a fourth mounting plate from the bottom, and the bit is provided with a plug sleeve that is plugged into the output shaft of the gear box, and the plug sleeve is rotatably mounted in the third mounting plate and the fourth mounting plate.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model can pre-tighten the cylinder heads of compressors of different sizes at the same time, which reduces manual labor. Moreover, for compressors of different sizes, only the gear box and the screwdriver cover need to be replaced as a whole, and the changeover is quick and convenient.

[0016] 2. By installing a beam switch on the box cover, the beam switch can timely detect the installation status of the compressor cylinder head to be pre-tightened, thereby facilitating the control of the start and stop of the driving element, so that the start and stop of the driving element no longer need to be controlled manually, thereby improving the pre-tightening efficiency of the compressor cylinder head.

[0017] 3. By installing a height adjustment block on the box cover, it can support compressor cylinder heads of different sizes, making it easier to pre-tighten the compressor cylinder head later. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and are included in and constitute a part of this specification.

[0019] Figure 1 This is a structural diagram of the compressor cylinder cover pre-tightening machine provided by the utility model;

[0020] Figure 2 This is the installation diagram of the box cover and gear box;

[0021] Figure 3 It is a structural diagram of the gearbox;

[0022] Figure 4 is a cross-sectional schematic diagram of the gearbox;

[0023] Figure 5 This is a schematic diagram of the installation of the height adjustment block.

[0024] Markings and corresponding parts names in the accompanying drawings:

[0025] 1. Frame, 2. Bit cover, 3. Upper mounting plate, 4. Lower mounting plate, 5. Connecting rod, 6. Driving element, 7. Coupling, 8. Gear box, 9. Bit, 10. Connector sleeve, 11. Height adjustment block, 12. Bolt, 13. Nut, 14. Spring, 15. Optical switch;

[0026] 101, chassis body, 102, chassis cover, 103, through hole, 104, avoidance groove;

[0027] 801, first mounting plate, 802, second mounting plate 802, 803, third mounting plate, 804, fourth mounting plate, 805, groove. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present invention. It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] like Figures 1 to 5As shown, the present invention provides a compressor cylinder head pre-tightening machine, comprising a frame 1, on which is mounted a bit cover 2, an upper mounting plate 3, and a lower mounting plate 4. The bit cover 2, upper mounting plate 3, and lower mounting plate 4 are arranged sequentially from top to bottom, with a certain distance between the bit cover 2 and the upper mounting plate 3, and between the upper mounting plate 3 and the lower mounting plate 4. The lower mounting plate 4 is mounted with a drive element 6, which can be a servo motor. The upper mounting plate 3 is mounted with a detachable gearbox 8, the input shaft of which is connected to the output shaft of the drive element 6, and the output shaft of the gearbox 8 extends outward through the gearbox 8. The gearbox 8 has multiple output shafts, each of which is mounted with a bit 9. It should be noted that the specific number of output shafts of the gearbox 8 can be selected according to actual conditions. For example, if three bits 9 are required for pre-tightening the compressor cylinder head, the number of output shafts of the gearbox 8 is three; if four bits 9 are required for pre-tightening the compressor cylinder head, the number of output shafts of the gearbox 8 is four. The bit 9 extends outward through the bit cover 2. Since the bit 9 needs to rotate when the compressor cylinder head is pre-tightened, the bit cover 2 is prevented from affecting the rotation of the bit 9. The hole on the bit cover 2 for the bit 9 to pass through is clearance-matched with the bit 9.

[0031] A height adjustment block 11 is also installed on the frame 1. The height adjustment block 11 is located on one side of the screwdriver head cover 2, and the height adjustment block 11 can be adjusted in height relative to the screwdriver head cover 2 on the frame 1, so that when compressor cylinder heads of different sizes are pre-tightened, the height adjustment block 11 can support the compressor cylinder heads of corresponding sizes, so that the utility model can achieve pre-tightening of compressor cylinder heads of different sizes.

[0032] like Figure 1 As shown, the frame 1 in the present invention includes a chassis body 101 and a chassis cover 102, the chassis cover 102 is fixed on the chassis body 101, and the chassis body 101 has a switchable door; the upper mounting plate 3, the lower mounting plate 4, the driving element 6 and the gear box 8 are all installed in the chassis, and the height adjustment block 11 and the screwdriver head cover 2 are both installed on the chassis cover 102, so that the surface of the pre-tightening machine is more neat, making the pre-tightening of the compressor cylinder head more convenient.

[0033] In the present invention, since the driving element 6 is installed in the chassis, a cooling fan is also installed on the chassis to facilitate heat dissipation in the chassis.

[0034] like Figure 5As shown, in the present invention, in order to meet the requirements of automatic adjustment of the height adjustment block 11, at least two bolts 12 are installed on the height adjustment block 11. Multiple bolts 12 are symmetrically arranged along the middle of the height adjustment block 11. The bolts 12 can move up and down on the box cover 102. The lower ends of the bolts 12 pass through the box cover 102 and extend into the chassis body 101. To prevent the bolts 12 from detaching from the box cover 102, a nut 13 is installed at one end of the bolt 12 extending into the chassis body 101. A spring 14 is also sleeved on the bolt 12. One end of the spring 14 is tightly pressed against the height adjustment block 11, and the other end of the spring 14 is tightly pressed against the box cover 102.

[0035] Since the shape of the compressor cylinder head is irregular, in order to keep the compressor cylinder head stable, when the compressor cylinder head is placed on the bit cover plate 2, one side of the compressor cylinder head is directly placed on the bit cover plate 2, and the other side of the compressor cylinder head is directly supported on the height adjustment block 11. When the compressor cylinder head is placed on the height adjustment block 11, the height adjustment block 11 will first move downward under the force of the compressor cylinder head, and the height adjustment block 11 will be supported by the reaction force of the spring 14 to prevent the compressor cylinder head placed on the bit cover plate 2 from tilting, so that the height adjustment block 11 can meet the needs of supporting compressor cylinder heads of different sizes.

[0036] like Figure 1 、 Figure 2 As shown, in the present invention, in order to prevent staff from misoperating when the compressor cylinder head is not properly placed, a beam switch 15 is also installed on the box cover 102. The transmitter and receiver in the beam switch 15 are located on opposite sides of the screwdriver cover 2. When the compressor cylinder head to be pre-tightened is placed on the screwdriver cover 2, the red light emitted by the transmitter in the beam switch 15 of the compressor cylinder head is blocked. At this time, the receiver in the beam switch 15 cannot receive the red light, thereby detecting the installation status of the compressor cylinder head and further controlling the automatic start and stop of the drive element 6. This makes the start and stop of the drive element 6 no longer need to be manually controlled, thereby improving the pre-tightening efficiency of the compressor cylinder head. The beam switch 15 in the present invention can directly adopt an existing beam type photoelectric sensor.

[0037] In the present utility model, although the start and stop of the driving element 6 is determined based on the detection result of the shooting switch 15, there may be a situation where the compressor cylinder head is not completely and accurately installed on the screwdriver cover 2 and the driving element 6 is started, but because the screwdriver 9 has a certain guiding property during the pre-tightening of the compressor cylinder head, even if the driving element 6 is started in this case, it will not affect the pre-tightening result of the compressor cylinder head.

[0038] like Figure 3 、 Figure 4As shown, in the present invention, in order to facilitate the upper mounting plate 3 and the lower mounting plate 4, at least two connecting rods 5 can be installed on the upper mounting plate 3, and the upper ends of the connecting rods 5 can be fixed to the box cover 102; similarly, at least two connecting rods 5 can be installed on the lower mounting plate 4, and the upper ends of the connecting rods 5 can be fixed to the upper mounting plate 3, so that the installation of the upper mounting plate 3 and the lower mounting plate 4 is more convenient.

[0039] In the present invention, the output shaft of the driving element 6 is connected to the input shaft of the gear box 8 via a coupling 7 .

[0040] In the present invention, in order to facilitate the replacement of the gear box 8, as shown in FIG. Figure 3 As shown, grooves 805 are provided on opposite sides of the gear box 8 or around the gear box 8, so that the gear box 8 can be conveniently grasped through the grooves 805 when it needs to be replaced; at the same time, a through hole 103 adapted to the gear box 8 is also provided on the box cover 102, and avoidance grooves 104 are provided on opposite sides of the through hole 103, so that when the gear box 8 needs to be replaced, the bit cover 2 is removed, and the gear box 8 can be grasped with both hands through the avoidance grooves 104 and then directly taken out, so that the replacement of the gear box 8 is quick and convenient.

[0041] like Figure 3 、 Figure 4 As shown, in the present invention, the gearbox 8 includes a first mounting plate 801 and a second mounting plate 802 stacked in sequence from bottom to top. The input shaft of the gearbox 8 and the output shaft of the gearbox 8 are both rotatably mounted on the first mounting plate 801 through bearings, and the input shaft of the gearbox 8 and the output shaft of the gearbox 8 are connected by gear transmission; the lower surface of the second mounting plate 802 has a cavity structure, so that after the second mounting plate 802 is installed on the first mounting plate 801, the gear transmission structure is accommodated in the cavity structure on the lower surface of the second mounting plate 802. At the same time, the output shaft of the gearbox 8 extends outward through the second mounting plate 802.

[0042] At least a third mounting plate 803 and a fourth mounting plate 804 are stacked on the gear box 8 from the bottom, and the screwdriver bit 9 has a plug sleeve 10 that is plugged into the output shaft of the gear box 8. The third mounting plate 803 and the fourth mounting plate 804 are both provided with through holes 103 that are clearance-matched with the plug sleeve 10, so that the plug sleeve 10 can fully rotate within the third mounting plate 803 and the fourth mounting plate 804.

[0043] In the present invention, the first mounting plate 801, the second mounting plate 802, the third mounting plate 803 and the fourth mounting plate 804 can be fixed as a whole. At this time, in order to facilitate the grasping of the gear box 8, the grooves 805 can be opened on the opposite sides of the fourth mounting plate 804 or the opposite sides of the fourth mounting plate 804; it should be noted that when only the opposite sides of the fourth mounting plate 804 or the opposite sides of the gear box 8 have grooves 805, the avoidance grooves 104 located on the opposite sides of the through hole 103 need to correspond to the two grooves 805, so that the gear box 8 can be grasped through the two avoidance grooves 104 when replaced.

[0044] When the compressor cylinder head needs to be pre-tightened, the compressor cylinder head is placed on the screwdriver cover plate 2, with one side of the compressor cylinder head directly placed on the screwdriver cover plate 2, and the other side of the compressor cylinder head is directly supported on the height adjustment block 11. At this time, the height adjustment block 11 will first move downward under the force of the compressor cylinder head, and the height adjustment block 11 will be supported by the reaction force of the spring 14 to prevent the compressor cylinder head from tilting.

[0045] When the compressor cylinder head is placed on the screwdriver head cover plate 2, the red light emitted by the transmitter in the compressor cylinder head shooting switch 15 is blocked, and the receiver in the shooting switch 15 cannot receive the red light. It is detected that the compressor cylinder head is placed on the screwdriver head cover plate 2, and the driving element 6 is automatically started. The driving element 6 drives the input shaft of the gear box 8 to rotate through the coupling 7, and the input shaft of the gear box 8 drives the output shaft of the gear box 8 to rotate, so that the input shaft installed on the gear box 8 drives the screwdriver head 9 to rotate, thereby realizing the pre-tightening of the compressor cylinder head.

[0046] When it is necessary to pre-tighten the compressor cylinder heads of different sizes, remove the screwdriver cover 2 from the box cover 102, loosen the fixation of the gear box 8 and the upper mounting plate 3, and the staff put their hands through the avoidance groove 104 to grasp the gear box 8 and take it out from the through hole 103. Finally, install the gear box 8 and screwdriver cover 2 of corresponding size.

[0047] In the present invention, since the frame 1 is a chassis structure, electrical components such as the controller for controlling the drive element 6 can be directly mounted within the chassis body 101. Furthermore, in the present invention, the output of the beamforming switch 15 is electrically connected to the input of the controller, and the output of the controller is electrically connected to the input of the drive element 6. That is, after the beamforming switch 15 detects that the compressor cylinder head is placed on the split cover, it transmits a detection signal to the controller. Upon receiving the signal from the beamforming switch 15, the controller sends a drive instruction to the drive element 6, thereby controlling the start and stop of the drive element 6.

[0048] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0050] Those skilled in the art will appreciate that the above embodiments are merely for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention. Other variations or modifications may be made based on the above disclosure, and such variations or modifications are still within the scope of the present invention.

Claims

1. A compressor cylinder head pre-tightening machine, characterized in that: The invention comprises a frame (1), wherein a screwdriver bit cover plate (2), an upper mounting plate (3), and a lower mounting plate (4) are sequentially mounted on the frame (1) from top to bottom, a driving element (6) is mounted on the lower mounting plate (4), a gear box (8) connected to an output shaft of the driving element (6) is detachably mounted on the upper mounting plate (3), and the gear box (8) has a plurality of output shafts, and screwdriver bits (9) are mounted on the plurality of output shafts on the gear box (8), and the screwdriver bits (9) extend outward from the screwdriver bit cover plate (2); and a height adjustment block (11) which can be adjusted up and down relative to the screwdriver bit cover plate (2) is also mounted on the frame (1).

2. The compressor cylinder head pre-tightening machine according to claim 1, characterized in that: The frame (1) comprises a chassis body (101) and a chassis cover (102); an upper mounting plate (3), a lower mounting plate (4) and a gear box (8) are all mounted in the chassis body (101); and a height adjustment block (11) and a screwdriver head cover (2) are both mounted on the chassis cover (102).

3. The compressor cylinder head pre-tightening machine according to claim 2, characterized in that: At least two bolts (12) are installed on the height adjustment block (11), and the bolts (12) pass through the box cover (102) and extend downward, and nuts (13) are installed on the extended ends of the bolts (12); a spring (14) is also sleeved on the bolts (12), and the two ends of the spring (14) are respectively pressed against the box cover (102) and the height adjustment block (11).

4. The compressor cylinder head pre-tightening machine according to claim 2, characterized in that: The box cover (102) is also provided with a beam switch (15), which is located outside the screwdriver head cover (2).

5. The compressor cylinder head pre-tightening machine according to claim 2, characterized in that: The box cover (102) and the upper mounting plate (3), as well as the upper mounting plate (3) and the lower mounting plate (4) are connected via connecting rods (5).

6. The compressor cylinder head pre-tightening machine according to claim 1, characterized in that: The output shaft of the driving element (6) is connected to the input shaft of the gear box (8) via a coupling (7).

7. The compressor cylinder head pre-tightening machine according to claim 1, characterized in that: Grooves (805) are provided on opposite sides of the gear box (8) or around the gear box (8).

8. The compressor cylinder head pre-tightening machine according to claim 2, characterized in that: The box cover (102) is also provided with a through hole (103) adapted to the gear box (8), and opposite sides of the through hole (103) are provided with avoidance grooves (104).

9. The compressor cylinder head pre-tightening machine according to any one of claims 1 to 8, characterized in that: The gearbox (8) comprises a first mounting plate (801) and a second mounting plate (802) stacked sequentially from bottom to top, an input shaft of the gearbox (8) and an output shaft of the gearbox (8) are both rotatably mounted on the first mounting plate (801), and a transmission structure between the input shaft of the gearbox (8) and the output shaft of the gearbox (8) is accommodated in both the first mounting plate (801) and the second mounting plate (802), and the output shaft of the gearbox (8) extends outward through the second mounting plate (802).

10. The compressor cylinder head pre-tightening machine according to claim 9, characterized in that: The gear box (8) is further stacked with at least a third mounting plate (803) and a fourth mounting plate (804) from the bottom, and the screwdriver bit (9) is provided with a plug sleeve (10) that is plugged into and matched with the output shaft of the gear box (8), and the plug sleeve (10) is rotatably mounted in the third mounting plate (803) and the fourth mounting plate (804).

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