Semi-automatic pressing machine

Abstract

The utility model relates to a semi-automatic pressing machine which comprises a working table, a pressing head device distributed above the working table and a clamp installed on the working table and used for clamping products, a lower connecting piece corresponding to the clamp is arranged below the working table, an inner threaded hole is formed in the upper end of the lower connecting piece, and the lower end of the lower connecting piece is in linkage with a motor. A body of the motor is fixed below the workbench, and the output end of the motor is in linkage with the lower connecting piece and can drive the lower connecting piece to rotate. The semi-automatic press-fitting machine has the advantages that the semi-automatic press-fitting machine can be directly applied to assembling of a small brake assembly.

Description

Technical Field

[0001] The utility model specifically relates to a semi-automatic press-fitting machine. Background Art

[0002] In the field of parking brakes, the brake sub-assembly plays a crucial role. When the driver activates the brake by pulling the handbrake after the vehicle has come to a stop, the brake sub-assembly begins to function. It pushes the piston, causing the brake pads to tightly engage with the brake disc, ensuring the vehicle is parked stably. The core components of the brake sub-assembly include a spring seat sleeve, a spring, a steel ball sleeve, a steel ball sleeve screw, a threaded guide rod, steel balls, and gaskets. The precise cooperation between the various components is the key to ensuring the braking effect.

[0003] The Chinese utility model patent publication number "CN205025976U" discloses a design of a brake caliper assembly. The brake sub-assembly mentioned in this application is a part of the brake caliper assembly and is responsible for being installed on the parking caliper body. One end is connected to the rotating bracket through a steel ball sleeve screw, and the other end is connected to the adjusting nut through a threaded guide rod. During operation, the movement of the rotating bracket drives the steel ball sleeve screw. After a series of precise transmissions, it drives the brake pads on the brake caliper to achieve the braking function. Through the attached drawings in the specification of this patent publication Figure 1 , the specific structure and installation position of the brake sub-assembly can be clearly seen.

[0004] However, during the production process of the brake sub-assembly, after each component is processed, it needs to go through an assembly process to form a complete assembly. This involves key steps such as the press-fitting of the threaded guide rod, the assembly of the steel ball sleeve screw, and the downward pressing and riveting edge actions. Existing press-fitting tools have limitations in this regard. Usually, it is difficult to complete all processes on a single device, resulting in the necessity to use multiple devices and transfer the products multiple times. It is impossible to achieve one-machine forming, increasing the complexity and cost of production.

[0005] The Chinese invention patent publication number "CN212553648U" discloses a rapid bearing press-fitting device, mainly including an upper mounting plate, a lower mounting plate, mounting support columns, a cylinder, a bearing press-fitting positioning seat, a bearing press-fitting sleeve, a rotor fixing seat, and a rotor fixing seat positioning plate. From the attached drawings in the specification of this public document Figure 1 , the connection relationship between the various components can be clearly seen. This press-fitting device mainly relies on the lower rotor fixing seat to clamp the product and the upper bearing press-fitting positioning seat to clamp the part to be installed, and then the cylinder drives the bearing press-fitting positioning seat to move up and down to achieve bearing assembly. If this device is directly applied to the assembly of the brake sub-assembly, the following problems still exist.

[0006] First, when the threaded guide rod is first press-fitted, due to the action of the spring, the threaded guide rod has a tendency to move upward. At this time, simply relying on the above-mentioned press-fitting device, there is no limiting component for limiting the threaded guide rod below. After the cylinder retracts, the threaded guide rod pops upward. At this time, it is impossible to clamp the ball bushing screw. Therefore, the existing press-fitting device cannot be directly applied to the assembly of the brake sub-assembly.

[0007] Second, a single operation can only complete the press-fitting of the threaded guide rod or the assembly of the ball bushing screw, and it is impossible to achieve multi-process press-fitting on one device. Therefore, multiple devices and multiple product runs are still required, and one-machine forming cannot be achieved, and the process is cumbersome.

[0008] In summary, aiming at the deficiencies of the prior art, the present application proposes a semi-automatic press, aiming to solve the problem of multi-process press-fitting on one machine, and can be directly applied to the assembly of the brake sub-assembly, improve production efficiency, reduce production costs, and ensure product quality and performance at the same time. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a semi-automatic press for the assembly of the brake sub-assembly directly in view of the above deficiencies of the prior art.

[0010] To achieve the above object, the present invention provides the following technical solutions: A semi-automatic press, including a workbench, a pressing head device distributed above the workbench, and a fixture installed on the workbench for clamping products, characterized in that: a lower connecting member corresponding to the fixture is provided below the workbench, an internal thread hole is provided at the upper end of the lower connecting member, and a motor is linked to the lower end of the lower connecting member. The body of the motor is fixed below the workbench, and the output end of the motor is linked to the lower connecting member and can drive the lower connecting member to rotate.

[0011] By adopting the above technical solutions, it can be directly applied to the assembly of the brake sub-assembly. When assembling the threaded guide rod, the threaded guide rod is pressed down onto the fixture (at this time, a spring seat sleeve assembled with the threaded guide rod is placed on the fixture) by using the pressing head device, and then the motor drives the lower connecting member to rotate. Since an internal thread hole is provided on the lower connecting member, the lower end of the threaded guide rod will be threadedly connected to the lower connecting member, that is, the threaded guide rod is limited, and even after the pressing head device rises, the threaded guide rod will not pop upward, which is convenient for the assembly of the ball bushing screw. And the semi-automatic press designed in the present application has a wide application range. According to the actual situation, if there is no need for the lower connecting member to perform the limiting work, it can be adapted to the assembly of ordinary bearings.

[0012] The above semi-automatic press can be further configured as follows: A linkage sleeve is provided between the lower connecting member and the motor. The linkage sleeve is provided with a sliding hole penetrating along its own axis. The lower connecting member is slidably connected to the linkage sleeve through the sliding hole, and the lower connecting member and the linkage sleeve can rotate coaxially. The lower end of the linkage sleeve is linked to the output end of the motor. The motor can drive the lower connecting member to rotate through the linkage sleeve. The lower connecting member is also linked with a reset assembly.

[0013] With the above technical solution, by adding a linkage sleeve and a sliding hole, it can not only convert the rotational output form of the motor into the rotational form of the lower connecting member, but also bring a certain degree of axial movement or self-adjustment to the lower connecting member to adapt to the threaded connection method between the lower connecting member and the threaded guide rod; further adding a reset assembly can help the lower connecting member reset during the process of disconnecting the linkage between the lower connecting member and the threaded guide rod, so as to perform the assembly of the threaded guide rod for the next time.

[0014] The above semi-automatic press can be further configured as follows: The linkage sleeve is also provided with guiding strip-shaped grooves distributed on the side of the sliding hole. The guiding strip-shaped grooves and the sliding hole are parallel to each other and communicate with each other. The end of the lower connecting member is connected with a pin. The end of the pin extends into the guiding strip-shaped groove; the lower connecting member is slidably connected to the linkage sleeve through the sliding hole, and the lower connecting member is coaxially rotated with the linkage sleeve through the pin and the guiding strip-shaped groove.

[0015] With the above technical solution, it can stably convert the rotational output form of the motor into the rotational form of the lower connecting member, and also bring a certain degree of axial movement or self-adjustment to the lower connecting member to adapt to the threaded connection method between the lower connecting member and the threaded guide rod. The motor drives the linkage sleeve to rotate, and the lower connecting member rotates with the linkage sleeve under the action of the pin. Also, due to the threaded connection between the lower connecting member and the threaded guide rod, the lower connecting member can slide along the axis direction of the guiding strip-shaped groove relative to the linkage sleeve to adapt to the threaded connection method between the lower connecting member and the threaded guide rod.

[0016] The above semi-automatic press can be further configured as follows: The reset assembly includes a first lower flange fixed to the end of the linkage sleeve, a first telescopic spring sleeved on the outer periphery of the lower connecting member, and a first upper flange fixed to the outer periphery of the lower connecting member. One end of the first telescopic spring is in contact connection with the first upper flange, and the other end is in contact connection with the first lower flange.

[0017] With the above technical solution, during the process of the lower connecting member sliding along the axis direction of the guiding strip-shaped groove relative to the linkage sleeve, the first telescopic spring will be compressed. During the process of disconnecting the linkage between the lower connecting member and the threaded guide rod, the first telescopic spring helps the lower connecting member reset, so as to perform the assembly of the threaded guide rod for the next time.

[0018] The above-mentioned semi-automatic press can be further configured as follows: the lower connecting part includes a screw sleeve distributed at the top and a connecting rod distributed at the bottom, and the screw sleeve and the connecting rod are integrally formed; the internal threaded hole is arranged on the screw sleeve, and the first upper flange is distributed below the screw sleeve and fixedly sleeved on the connecting rod.

[0019] By adopting the above technical solution, the threaded sleeve facilitates the threaded connection between the lower connecting piece and the threaded guide rod, and the connecting rod is used for linkage with the linkage sleeve.

[0020] The above-mentioned semi-automatic press machine can be further configured such that: the cross section of the connecting rod is square, and the cross section of the sliding hole is also square.

[0021] By adopting the above technical solution, the linkage stability between the lower connecting piece and the linkage sleeve is further improved.

[0022] The above-mentioned semi-automatic pressing machine can be further configured as: the pressing head device includes a first mounting plate, a first cylinder distributed above the first mounting plate, and a first slide rail distributed below the first mounting plate; the first mounting plate is provided with a first through hole corresponding to the first cylinder; the first slide rail is slidably connected with a sliding plate; the sliding plate is linked with a plurality of groups of pressure rod mechanisms; the plurality of groups of pressure rod mechanisms are arranged in sequence and at intervals along a direction parallel to the axis of the first slide rail; the end of the sliding plate is linked with a second cylinder; the second cylinder can drive the sliding plate to reciprocate along the axis of the first slide rail; the first cylinder can drive a group of pressure rod mechanisms to reciprocate along the axis direction of the first cylinder through the first through hole.

[0023] The above technical solution can realize multi-process press-fitting without setting up multiple equipments or running the product multiple times, which facilitates the assembly of the brake subassembly and improves production efficiency. The specific operation is as follows: the second cylinder drives the sliding plate to move along the first slide rail, changing the positions of several groups of pressure rod mechanisms. According to the actual needs, the first cylinder controls different pressure rod mechanisms through the first through hole. In this process, the lower connecting part can limit the lower part of the part to be assembled. For example, when it is used for the assembly of the brake subassembly, the lower connecting part can first limit the threaded guide rod to facilitate the subsequent press-fitting of the steel ball sleeve screw, truly realizing one machine for multiple uses. It should be noted that the first cylinder can only push one group of pressure rod mechanisms at a time.

[0024] The above-mentioned semi-automatic pressing machine can be further configured as follows: each group of pressure rod mechanisms includes a guide sleeve which is hollow inside and open at both ends, the sliding plate is provided with a plurality of groups of second through holes, the upper end of each group of guide sleeves is installed in a group of second through holes, a pressure rod is slidably connected in the guide sleeve, a second telescopic spring is sleeved on the outer periphery of the pressure rod, a second upper flange is fixed to the upper end of the pressure rod, a second lower flange which is arranged opposite to the second upper flange is fixed in the guide sleeve, one end of the telescopic spring is in contact with the second upper flange, and the other end is in contact with the second lower flange, and the lower end of the pressure rod is linked with a clamping part which can clamp materials.

[0025] By adopting the above technical scheme, the guide sleeve and the second through hole on the sliding plate are matched to realize the precise positioning of the pressure rod, and the accuracy in the press-fitting process is ensured. Since the sliding plate can move along the first slide rail, and each guide sleeve can correspond to the first through hole, it is possible to quickly switch different pressure rod mechanisms and improve work efficiency. Since the clamping piece can be replaced according to the different materials, the pressure head device can adapt to materials of different shapes and sizes, and the press-fitting application range of the device is increased. The design of the second telescopic spring, the second upper flange, and the second lower flange ensures that the pressure rod can automatically reset after the press-fitting is completed. The hollow guide sleeve design makes the device compact in structure, occupies a small space, and is easy to integrate into the existing production line. The specific operation is as follows: the sliding plate moves along the first slide rail under the drive of the second cylinder, and different guide sleeves will correspond to the second through hole. Only one set of guide sleeves corresponds to the first through hole at a time. The output end of the first cylinder passes through the first through hole to push the pressure rod downward. The lower part of the pressure rod is provided with a clamping piece for clamping the material. After the press-fitting is completed, the first cylinder is reset, and the pressure rod is automatically reset under the action of the second telescopic spring.

[0026] The above-mentioned semi-automatic press can be further configured as follows: a connecting hole is provided at the upper end of an assembly clamp, an insert block matching the connecting hole is provided at the lower end of the pressure rod, a countersunk hole is provided at the lower end of the clamp, and a plurality of groups of notches are spaced apart and distributed around the outer periphery of the countersunk hole.

[0027] By adopting the above technical solution, the detachable connection between the clamping piece and the pressure rod can be realized by setting the connection hole and the plug block. The countersunk hole and the slot are further set so that the clamping piece can clamp the threaded guide rod on the brake subassembly.

[0028] The above-mentioned semi-automatic pressing machine can be further configured as follows: a connecting hole is provided at the upper end of an assembly clamp, a plug block matching the connecting hole is provided at the lower end of the pressure rod, a cylindrical socket is provided at the lower end of the clamp, and a guide socket distributed on the side of the cylindrical socket is also provided at the lower end of the clamp.

[0029] By adopting the above technical solution, the detachable connection between the clamping member and the pressure rod can be achieved by setting the connecting hole and the inserting block. Further, a cylindrical jacking hole is provided to facilitate the insertion of the rod portion of the steel ball sleeve screw; a guiding jacking hole is provided to position the steel ball sleeve screw during clamping, so as to facilitate the press-fitting of the steel ball sleeve screw in the correct orientation.

[0030] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments. Description of the Drawings

[0031] Figure 1 Schematic diagram of the overall structure of the embodiment of the present utility model Figure 1 ;

[0032] Figure 2 Schematic diagram of the overall structure of the embodiment of the present utility model Figure 2 ;

[0033] Figure 3 Exploded schematic diagram of the pressure head device part of the embodiment of the present utility model;

[0034] Figure 4 Schematic diagram of two sets of clamping members of the embodiment of the present utility model;

[0035] Figure 5 Schematic diagram of the assembly of the components below the fixture of the embodiment of the present utility model;

[0036] Figure 6 Exploded schematic diagram of the components below the fixture of the embodiment of the present utility model;

[0037] Figure 7 Schematic diagram of the fixture of the embodiment of the present utility model;

[0038] Figure 8 Schematic diagram of the assembly of the fixture and the brake sub-assembly of the embodiment of the present utility model;

[0039] Figure 9 Schematic diagram of the brake sub-assembly of the embodiment of the present utility model.

[0040] Label annotation: workbench a, pressure head device b, first mounting plate b1, first cylinder b2, first slide rail b3, first through hole b4, sliding plate b5, second cylinder b6, guide sleeve b7, second through hole b8, pressure rod b9, second telescopic spring b10, second upper flange b11, second lower flange b12, clamping member b13, connecting hole b14, inserting block b15, counterbore b16, cylindrical jacking hole b17, guiding jacking hole b18, lower connecting member c1, motor c2, internal thread hole c3, linkage sleeve c4, sliding hole c5, guiding strip-shaped groove c6, pin c7, first lower flange c8, first telescopic spring c9, first upper flange c10, fixture e. Detailed Description of the Embodiment

[0041] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0042] As Figures 1 to 9 shown, the semi-automatic press includes a workbench a, a press head device b distributed above the workbench a, and a fixture e installed on the workbench a and used for clamping products. A lower connecting member c1 corresponding to the fixture e is provided below the workbench a. An internal threaded hole c3 is provided at the upper end of the lower connecting member c1, and a motor c2 is linked to the lower end of the lower connecting member c1. The body of the motor c2 is fixed below the workbench a, and the output end of the motor c2 is linked to the lower connecting member c1 and can drive the lower connecting member c1 to rotate. It can be directly applied to the assembly of the brake subassembly. When assembling the threaded guide rod, the press head device b is used to press the threaded guide rod onto the fixture e (at this time, a spring seat sleeve assembled with the threaded guide rod is placed on the fixture e), and then the motor c2 drives the lower connecting member c1 to rotate. Since the internal threaded hole c3 is provided on the lower connecting member c1, the lower end of the threaded guide rod will be threadedly connected to the lower connecting member c1, that is, the threaded guide rod is limited, and even if the press head device b rises, the threaded guide rod will not bounce upward, which is convenient for the assembly of the steel ball sleeve screw d8. Moreover, the semi-automatic press designed in this application has a wide range of applications. According to the actual situation, if there is no need for the lower connecting member c1 to perform the limiting work, it can be adapted to the assembly of ordinary bearings.

[0043] A linkage sleeve c4 is provided between the lower connecting member c1 and the motor c2. The linkage sleeve c4 is provided with a sliding hole c5 penetrating along its own axis direction. The cross-section of the connecting rod is square, and the cross-section of the sliding hole c5 is also square. Further improve the linkage stability between the lower connecting member c1 and the linkage sleeve c4. The lower connecting member c1 is slidably connected to the linkage sleeve c4 through the sliding hole c5, and the lower connecting member c1 and the linkage sleeve c4 can rotate coaxially. The lower end of the linkage sleeve c4 is linked to the output end of the motor c2, and the motor c2 can drive the lower connecting member c1 to rotate through the linkage sleeve c4. The lower connecting member c1 is also linked with a reset assembly. The addition of the linkage sleeve c4 and the sliding hole c5 can not only convert the rotation output form of the motor c2 into the rotation form of the lower connecting member c1, but also bring a certain degree of axial movement or self-adjustment to the lower connecting member c1 to adapt to the threaded connection method between the lower connecting member c1 and the threaded guide rod; further adding a reset assembly can help the lower connecting member c1 reset during the process of releasing the linkage between the lower connecting member c1 and the threaded guide rod, so as to perform the assembly of the threaded guide rod next time.

[0044] The linkage sleeve c4 is also provided with a guiding strip groove c6 distributed on the side of the sliding hole c5. The guiding strip groove c6 and the sliding hole c5 are parallel to each other and communicate with each other. The end of the lower connecting piece c1 is connected with a plug pin c7, and the end of the plug pin c7 extends into the guiding strip groove c6. The lower connecting piece c1 is slidably connected with the linkage sleeve c4 through the sliding hole c5, and the lower connecting piece c1 is coaxially rotated with the linkage sleeve c4 through the plug pin c7 and the guiding strip groove c6. It can stably convert the rotation output form of the motor c2 into the rotation form of the lower connecting piece c1, and also bring a certain degree of axial movement or self-adjustment to the lower connecting piece c1 to adapt to the threaded connection mode between the lower connecting piece c1 and the threaded guide rod. The motor c2 drives the linkage sleeve c4 to rotate, and the lower connecting piece c1 rotates following the linkage sleeve c4 under the action of the plug pin c7. Also, due to the threaded connection between the lower connecting piece c1 and the threaded guide rod, the lower connecting piece c1 can slide along the axis direction of the guiding strip groove c6 relative to the linkage sleeve c4 to adapt to the threaded connection mode between the lower connecting piece c1 and the threaded guide rod.

[0045] The reset assembly includes a first lower flange c8 fixed to the end of the linkage sleeve c4, a first telescopic spring c9 sleeved on the outer periphery of the lower connecting piece c1, and a first upper flange c10 fixed to the outer periphery of the lower connecting piece c1. One end of the first telescopic spring c9 is in contact connection with the first upper flange c10, and the other end is in contact connection with the first lower flange c8. During the sliding process of the lower connecting piece c1 along the axis direction of the guiding strip groove c6 relative to the linkage sleeve c4, the telescopic spring will be compressed. During the process of the lower connecting piece c1 releasing the linkage with the threaded guide rod, the telescopic spring helps the lower connecting piece c1 to reset for the next assembly of the threaded guide rod.

[0046] The lower connecting piece c1 includes a screw sleeve distributed above and a connecting rod distributed below. The screw sleeve and the connecting rod are integrally formed. The internal thread hole c3 is arranged on the screw sleeve, and the first upper flange c10 is distributed below the screw sleeve and fixedly sleeved on the connecting rod. The screw sleeve facilitates the threaded connection between the lower connecting piece c1 and the threaded guide rod, and the connecting rod is used to be linked with the linkage sleeve c4.

[0047] The indenter device b includes a first mounting plate b1, a first cylinder b2 distributed above the first mounting plate b1, and a first slide rail b3 distributed below the first mounting plate b1. A first through hole b4 corresponding to the first cylinder b2 is provided on the first mounting plate b1. A sliding plate b5 is slidably connected to the first slide rail b3. The sliding plate b5 is linked with a plurality of sets of pressing rod b9 mechanisms. The plurality of sets of pressing rod b9 mechanisms are arranged at intervals in sequence along the direction parallel to the axis of the first slide rail b3. A second cylinder b6 is linked to the end of the sliding plate b5. The second cylinder b6 can drive the sliding plate b5 to reciprocate along the axis of the first slide rail b3. The first cylinder b2 can drive a set of pressing rod b9 mechanisms to reciprocate along the axis of the first cylinder b2 through the first through hole b4. It can realize multi-process pressing and assembly, without the need to set up multiple devices, nor to rotate the product multiple times, which is convenient for the assembly of the brake sub-assembly and improves production efficiency. The specific operation is as follows: The second cylinder b6 drives the sliding plate b5 to move along the first slide rail b3, changing the positions of the plurality of sets of pressing rod b9 mechanisms. Thus, according to the actual requirements, the first cylinder b2 controls different pressing rod b9 mechanisms through the first through hole b4. During this process, the lower connecting piece c1 can limit the lower part of the part to be assembled. For example, when applied to the assembly of the brake sub-assembly, the lower connecting piece c1 can first limit the threaded guide rod, facilitating the subsequent pressing and assembly of the steel ball sleeve screw d8, truly realizing multi-functional use of one machine. It should be noted that: The first cylinder b2 can only push a set of pressing rod b9 mechanisms at a time.

[0048] Each set of pressure rod b9 mechanism includes a guide sleeve b7 with a hollow interior and open ends. A number of sets of second through holes b8 are provided on the sliding plate b5. The upper end of the guide sleeve b7 is installed in the second through hole b8. A pressure rod b9 is slidably connected inside the guide sleeve b7. A second telescopic spring b10 is sleeved on the outer periphery of the pressure rod b9. A second upper flange b11 is fixed to the upper end of the pressure rod b9. A second lower flange b12 opposite to the second upper flange b11 is fixed inside the guide sleeve b7. One end of the telescopic spring is in contact connection with the second upper flange b11, and the other end is in contact connection with the second lower flange b12. The lower end of the pressure rod b9 is linked with a clamping member b13 capable of clamping materials. Through the cooperation of the guide sleeve b7 and the second through holes b8 on the sliding plate b5, the precise positioning of the pressure rod b9 is achieved, ensuring the accuracy during the pressing process. Since the sliding plate b5 can move along the first slide rail b3 and each guide sleeve b7 can correspond to the first through hole b4, different pressure rod b9 mechanisms can be quickly switched, improving the work efficiency. Since the clamping member b13 can be replaced according to different materials, the pressing head device b can adapt to materials of different shapes and sizes, increasing the applicable range of the device for pressing. The design of the second telescopic spring b10, the second upper flange b11, and the second lower flange b12 ensures that the pressure rod b9 can automatically reset after completing the pressing. The design of the guide sleeve b7 with a hollow interior makes the device structure compact, occupying less space and being convenient to integrate into the existing production line. The specific operation is as follows: The sliding plate b5 moves along the first slide rail b3 driven by the second cylinder b6. Different guide sleeves b7 will correspond to the second through holes b8. Only one set of guide sleeves b7 corresponds to the first through hole b4 at a time. The output end of the first cylinder b2 passes through the first through hole b4 to push the pressure rod b9 downward. A clamping member b13 for clamping materials is provided at the lower part of the pressure rod b9. After completing the pressing, the first cylinder b2 resets, and the pressure rod b9 will automatically reset under the action of the second telescopic spring b10.

[0049] A connecting hole b14 is provided at the upper end of a set of clamping members b13. An insertion block b15 matched with the connecting hole b14 is provided at the lower end of the pressure rod b9. A countersunk head hole b16 is provided at the lower end of the clamping member b13. A number of sets of notches are also provided at the lower end of the clamping member b13, which are spaced apart from the outer periphery of the countersunk head hole b16. By providing the connecting hole b14 and the insertion block b15, the detachable connection between the clamping member b13 and the pressure rod b9 can be realized. The countersunk head hole b16 and the notches are further provided to facilitate the clamping member b13 to clamp the threaded guide rod on the brake sub-assembly.

[0050] One end of an assembly fixture b13 is provided with a connection hole b14, and the lower end of a pressure rod b9 is provided with an insertion block b15 that mates with the connection hole b14. The lower end of the assembly fixture b13 is provided with a cylindrical insertion hole b17, and the lower end of the assembly fixture b13 is further provided with a guiding insertion hole b18 distributed on the side of the cylindrical insertion hole b17. By providing the connection hole b14 and the insertion block b15, the detachable connection between the assembly fixture b13 and the pressure rod b9 can be achieved. Further providing the cylindrical insertion hole b17 facilitates the insertion of the rod portion of the steel ball sleeve screw d8; providing the guiding insertion hole b18 positions the steel ball sleeve screw d8 during clamping, so as to facilitate the press-fitting of the steel ball sleeve screw d8 in the correct orientation.

[0051] The working principle of this embodiment: The second cylinder b6 drives the sliding plate b5 to move along the first slide rail b3 until any one of the guiding sleeves b7 corresponds to the first through hole b4. The first cylinder b2 drives the push rod b24 to move downward through the linkage plate group b30 to drive the pressure rod b9 to move downward. During this process, according to the differences in the actual processed products or the processing procedures, the lower connecting member c1 rotates under the drive of the motor c2 according to actual needs to limit the lower end of the product. After a single press-fitting is completed, the first cylinder b2 resets, and the pressure rod b9 resets under the action of the telescopic spring.

[0052] The specific operation of this embodiment when applied to the brake sub-assembly:

[0053] First, a person places the threaded guide rod on a set of assembly fixtures b13 (the assembly fixture b13 is provided with a countersunk hole b16 and a notch). The first cylinder b2 drives the push rod b24 to move downward through the linkage plate group b30 to drive the pressure rod b9 to move downward. The pressure rod b9 drives the set of assembly fixtures b13 to move downward. Then, the motor c2 drives the lower connecting member c1 to rotate through the linkage sleeve c4, and the screw sleeve on the lower connecting member c1 will be threadedly connected to the threaded guide rod to limit the threaded guide rod. After the first cylinder b2 drives the set of assembly fixtures b13 to rise, the threaded guide rod will not bounce up. The assembly fixture b13 can be made of a magnetic material so that the threaded guide rod can be stably clamped on the assembly fixture b13.

[0054] Secondly, the second cylinder b6 drives the sliding plate b5 to move along the first slide rail b3 until the next set of guiding sleeves b7 corresponds to the first through hole b4. A person places the steel ball sleeve screw d8 on a set of assembly fixtures b13 (the assembly fixture b13 is provided with a cylindrical insertion hole b17 and a guiding insertion hole b18). The first cylinder b2 drives the push rod b24 to move downward through the linkage plate group b30 to drive the pressure rod b9 to move downward. The pressure rod b9 drives the set of assembly fixtures b13 to move downward until the steel ball sleeve guide rod is press-fitted onto the brake sub-assembly. The assembly fixture b13 can be made of a magnetic material so that the steel ball sleeve screw d8 can be stably clamped on the assembly fixture b13.

[0055] It should be noted that this embodiment is developed for assembling the small brake assembly, but in actual use, it is not limited to assembling the small brake assembly. By changing the structural shape of the clamping part b13, it can be adapted to the press-fitting of different parts.

Claims

1. Semi-automatic press, including a workbench, a press head device distributed above the workbench, and a fixture installed on the workbench and used for clamping products, characterized in that: A lower connecting member corresponding to the fixture is provided below the workbench. An internal threaded hole is provided at the upper end of the lower connecting member. A motor is linked to the lower end of the lower connecting member. The body of the motor is fixed below the workbench, and the output end of the motor is linked to the lower connecting member and can drive the lower connecting member to rotate.

2. The semi-automatic press according to claim 1, wherein: A linkage sleeve is provided between the lower connecting member and the motor. The linkage sleeve is provided with a sliding hole penetrating along its own axis. The lower connecting member is slidably connected to the linkage sleeve through the sliding hole, and the lower connecting member and the linkage sleeve can rotate coaxially. The lower end of the linkage sleeve is linked to the output end of the motor. The motor can drive the lower connecting member to rotate through the linkage sleeve. The lower connecting member is also linked to a reset assembly.

3. The semi-automatic press according to claim 2, characterized in that: The linkage sleeve is further provided with guiding strip-shaped grooves distributed on the side of the sliding hole. The guiding strip-shaped grooves and the sliding hole are parallel to each other and communicate with each other. A plug pin is connected to the end of the lower connecting member, and the end of the plug pin extends into the guiding strip-shaped groove. The lower connecting member is slidably connected to the linkage sleeve through the sliding hole, and the lower connecting member is coaxially rotated with the linkage sleeve through the plug pin and the guiding strip-shaped groove.

4. The semi-automatic press according to claim 3, characterized in that: The reset assembly includes a first lower flange fixed to the end of the linkage sleeve, a first telescopic spring sleeved on the outer periphery of the lower connecting member, and a first upper flange fixed to the outer periphery of the lower connecting member. One end of the first telescopic spring is in abutting connection with the first upper flange, and the other end is in abutting connection with the first lower flange.

5. The semi-automatic press according to claim 4, wherein: The lower connecting member includes a screw sleeve distributed above and a connecting rod distributed below. The screw sleeve and the connecting rod are integrally formed. The internal threaded hole is provided on the screw sleeve. The first upper flange is distributed below the screw sleeve and fixedly sleeved on the connecting rod.

6. The semi-automatic press according to claim 5, characterized in that: The cross section of the connecting rod is square, and the cross section of the sliding hole is also square.

7. The semi-automatic press according to any one of claims 1 to 6, characterized in that: The pressing head device includes a first mounting plate, a first air cylinder distributed above the first mounting plate, and a first slide rail distributed below the first mounting plate. A first through hole corresponding to the first air cylinder is provided on the first mounting plate. A sliding plate is slidably connected to the first slide rail. The sliding plate is linked to a plurality of groups of pressing rod mechanisms. The plurality of groups of pressing rod mechanisms are arranged at intervals in sequence along the direction parallel to the axis of the first slide rail. A second air cylinder is linked to the end of the sliding plate. The second air cylinder can drive the sliding plate to reciprocate along the axis of the first slide rail. The first air cylinder can drive a group of pressing rod mechanisms to reciprocate along the axis of the first air cylinder through the first through hole.

8. The semi-automatic press according to claim 7, characterized in that: Each group of pressing rod mechanisms includes a guiding sleeve that is hollow inside and open at both ends. A plurality of groups of second through holes are provided on the sliding plate. The upper end of each group of guiding sleeves is installed in a group of second through holes. A pressing rod is slidably connected in the guiding sleeve. A second telescopic spring is sleeved on the outer periphery of the pressing rod. A second upper flange is fixed to the upper end of the pressing rod. A second lower flange opposite to the second upper flange is fixed in the guiding sleeve. One end of the second telescopic spring is in abutting connection with the second upper flange, and the other end is in abutting connection with the second lower flange. A clamping member capable of clamping the material is linked to the lower end of the pressing rod.

9. The semi-automatic press according to claim 8, characterized in that: A connecting hole is provided at the upper end of a group of clamping members. A plug block matched with the connecting hole is provided at the lower end of the pressing rod. A counterbore is provided at the lower end of the clamping member. A plurality of groups of notches are also provided at the lower end of the clamping member and are distributed at intervals on the periphery of the counterbore.

10. The semi-automatic press according to claim 8, characterized in that: A connecting hole is provided at the upper end of a clamping member. An inserting block that mates with the connecting hole is provided at the lower end of the pressing rod. A cylindrical inserting hole is provided at the lower end of the clamping member, and guiding inserting holes distributed on the side of the cylindrical inserting hole are further provided at the lower end of the clamping member.

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