CN110883529A - Pin-pressing machine for base assembly of automobile air-conditioning compressor and application method thereof - Google Patents

Abstract

The invention discloses a pin press-mounting machine for assembling a base of an automobile air conditioner compressor and an application method thereof. And the pushing cylinder works to push the cylindrical pins forwards along the grooves on the pin guiding plate by the pushing plate until the lower parts of the cylindrical pins are inserted into the pin holes on the pre-pressing pin combination plate. The accurate alignment of the pin holes on the pre-pressing pin combination plate and the pin hole positions on the base, the pre-pressing depth of the cylindrical pins, the verticality after pre-pressing and the uniform distribution on the flange surface of the base can be ensured.

Description

Pin-pressing machine for base assembly of automobile air-conditioning compressor and application method thereof

technical field

The invention relates to a base assembling equipment of an automobile air-conditioning compressor, in particular to a pin pressing machine used for assembling a base of an automobile air-conditioning compressor and an application method thereof.

Background technique

The automotive air-conditioning compressor is an electric scroll compressor. The electric scroll compressor is a positive displacement compressor. The compression part is composed of a movable scroll and a stationary scroll, including the separation of the gas passing through the compressor shell. Many structural features of the road flow pattern to reduce entrained oil.

After entering the housing, some of the gas flows upwards to reduce the amount of gas flowing down towards the oil. To achieve this, the motor of the compressor may be surrounded by a sleeve having upper and lower holes for directing air flow to the upper and lower stator end turns of the motor. In some embodiments, it is important to position the suction inlet with respect to the two gas passages between the stator and the motor housing. The location of the inlet allows a channel to receive the incoming gas and divide the flow into flows in two opposite directions, upward and downward. The other channels only carry gas upwards. Additionally, suction baffles, diffusers, streamlined counterweights, and/or suction line catches can also aid in gas-oil separation or minimize oil entrainment.

The assembly of the electric scroll compressor is divided into casing assembly, rotor assembly, base assembly, mechanism assembly and magnetization, moving plate assembly, fixed plate assembly, upper cover assembly, and mechanism assembly loader. Shell assembly, wear-resistant pad balance block assembly, moving plate assembly assembly, fixed plate assembly assembly, upper cover assembly assembly, controller assembly, air tightness monitoring, exhaust Quantitative performance testing, oil injection, laser dressing and other processes.

The base assembly mainly includes a base, a shaft seal, a retaining ring and a bearing assembled in its inner cavity, and a cylindrical pin assembled on the flange surface of the base.

The manual base assembly press-fitting tooling is mainly composed of a hydraulic press and related tooling. The workflow is as follows:

(1) Manually place the oil seal on the oil seal press-fitting tool, then buckle the base upside down on the oil seal press-fitting tool, and use both hands to press down until it can no longer be pressed. Take out the base, and the shaft seal is press-fitted.

(2) Holding the circlip pliers, grab the retaining ring and place it in the groove of the base, and the retaining ring is installed.

(3) Place the cylindrical pin guide plate on the upper surface of the base, align the holes, manually place the 6 cylindrical pins into the holes of the guide plate, and then place the whole on the press positioning tool, start the press with both hands, and complete Press fit of cylindrical pins.

(4) Place the bearing on the bearing press head, and then invert the whole into the base, start the press with both hands, and complete the press-fitting of the bearing.

(5) Take out the bearing indenter and the guide plate of the cylindrical pin, and the finished base assembly is press-fitted.

It can be seen from step (3) that the diameter of the pin hole on the guide plate of the cylindrical pin is slightly larger than the diameter of the cylindrical pin, while the diameter of the pin hole on the upper surface of the base is less than or equal to the diameter of the cylindrical pin, so it cannot be guaranteed after a single cylindrical pin is placed. Its verticality, that is, it cannot guarantee the coaxial centerline of the cylindrical pin and the pin hole on the upper surface of the base, so after the six cylindrical pins are press-fitted simultaneously by the press, the uniform distribution of the cylindrical pins cannot be guaranteed, which will affect the bottom line. The smooth assembly of one process increases the scrap rate.

In addition, for batch processing and assembly, it is necessary to perform a large number of repetitive operations manually, which is cumbersome, labor-intensive, and low in production efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a pin press machine and an application method thereof with high production efficiency and guaranteeing the accuracy of feeding the cylindrical pins, thereby ensuring good verticality and uniformity of the pre-pressed cylindrical pins.

The pin pressing machine for base assembly of automobile air conditioner compressors provided by the present invention includes a support frame, a pin feeding device, a pin pre-compression mechanism and a base pressing mechanism; the pin feeding device includes a vertical lifting mechanism, a pin dividing material assembly, hanger, horizontal pushing mechanism and pre-pressed pin combination plate; vertical lifting mechanism includes vertically arranged telescopic power device and lifting frame driven by it; The pin distribution plate on the upper side of the pin distribution plate, the pin distribution plate and the pin introduction plate have corresponding pin holes, and the length direction of the pin introduction plate corresponds to the corresponding grooves at each pin hole; the hanger includes a rectangular bottom plate and two sides of its length direction. The front side plate; the horizontal push mechanism includes a telescopic power device and a push plate driven by it; the telescopic power device of the vertical lifting mechanism is fixed on the top of the support frame, the pin introduction plate is arranged horizontally, and the rear part is fixed on the lifting frame. The lower end; the top of the side plate of the hanger is connected and fixed with the two sides of the rear of the pin introduction plate; the telescopic power device of the horizontal push mechanism is fixed on the rectangular bottom plate of the hanger parallel to the pin introduction plate, and the front part of the push plate is located in the pin introduction plate. The lower side of the plate, and there are corresponding pin holes at the corresponding pin holes; the pin pre-pressing combination plate is arranged horizontally and fixed on the lower side of the corresponding push plate at the front end of the hanger, and there are corresponding pin holes in the front; the position of each pin hole is based on The position of the pin holes on the upper surface of the base is arranged; the pin pre-compression mechanism includes a vertically arranged telescopic power device and its driven pin pre-compression block, and the telescopic power device is fixed on the top of the support frame corresponding to the front of the vertical lifting mechanism; The base pressing mechanism includes a vertically arranged telescopic power device and a base pressing plate driven by the telescopic power device, and the telescopic power devices are symmetrically arranged on both sides of the pre-compression mechanism.

In an embodiment of the above technical solution, the support frame includes a bottom plate, a cylinder support plate and a base fixing plate, the bottom plate and the cylinder support plate are both rectangular plates, and the two cylinder support plates are vertically symmetrically connected to the length of the bottom plate. On both sides of the direction, a U-shaped gap is formed in the middle of the front side of the cylinder support plate in the height direction, and the base fixing plate is connected to the bottom of the U-shaped gap on both sides.

In an embodiment of the above technical solution, the telescopic power device of the vertical lifting mechanism is a lifting cylinder, a double-rod cylinder is selected, the piston rod is arranged upward, and one side outer wall of the rectangular cylinder body has a vertical guide. The groove and the other side are fixed on the inner top of a cylinder support plate by fasteners, and the head of the piston rod is connected with a sliding frame matching the guide groove. The lifting frame is an inverted T-shaped frame, and the upper part of the vertical plate is connected to the sliding frame. The outer wall is fixed.

In an embodiment of the above technical solution, the telescopic power device of the horizontal push mechanism is a push cylinder, a mechanical rodless cylinder is selected, and the push plate is fixed on the slider of the mechanical rodless cylinder.

In an embodiment of the above technical solution, the pin distribution plate includes a regular hexagonal plate and six gusset plates, and a semicircular hole through the thickness of the regular hexagonal plate is provided at the middle position of each side, and the middle position of the gusset plate is There are corresponding semicircular holes, and the two ends of the gusset plate are fixed with the regular hexagonal plate by fasteners to form the pin distribution plate.

In an embodiment of the above technical solution, a proximity switch is installed in the groove on the pin lead-in plate.

In an embodiment of the above technical solution, the front end of the hanger base plate is provided with a vertical support plate, the rear end of the pre-pressed pin combination plate is fixed on the vertical support plate, and both sides of the pre-pressed pin combination plate in the length direction are provided with a vertical support plate. A chute for the movement of the push plate is formed between the sidewalls.

In an embodiment of the above technical solution, the telescopic power device of the pin pre-pressing mechanism is a pre-pressing cylinder, a single-rod cylinder is selected, the piston rod is arranged downward, the head of the piston rod is a rectangular plate, and the pin pre-pressing The block is a rectangular block, which is fixed on the lower side of the rectangular plate. The two sides of the pin pre-pressing block are fixed with vertical guide rods through the connecting seat, and the upper end of the guide rod is fixed on the top surface of the U-shaped groove on the cylinder support plate. .

In an embodiment of the above technical solution, the telescopic power device of the base pressing mechanism is a pressing cylinder with a magnetic switch, the piston rod is arranged downward, and the rectangular cylinder body is fixed to the On the outside of the cylinder support plate, the head plate of the piston rod is connected to the base pressure plate, and the flange surface of the base shell is pressed through the inner side of the base pressure plate.

The present invention also provides a method for pre-compressing the base pin by using the above-mentioned pressing machine, comprising the following steps:

(1) Make the piston rod of the lifting cylinder of the vertical lifting mechanism extend to the maximum stroke state, so that the pre-pressing pin combination plate is in the highest position;

(2) Make the slider of the push cylinder at the rearmost position, and align the pin hole on the push plate with the pin hole on the pin introduction plate;

(3) The piston rod of the lifting cylinder is retracted to the retracted state, so that the pre-pressing pin combination plate is lowered to the surface of the base;

(4) Distribute cylindrical pins in each pin hole of the pin distribution plate through the vibrating feeder, and detect that there are cylindrical pins in each pin hole on the pin introduction plate through the proximity switch;

(5) Make the base pressing block of the base pressing mechanism press the outer edge of the flange surface of the base;

(6) Move the slider of the push cylinder to the frontmost position, and at this time, the lower end of the cylindrical pin on the push plate is inserted into the pin hole on the pre-pressing pin combination plate;

(7) Press the lower part of each pin into the pin hole on the flange surface of the base through the pin pre-pressing mechanism;

(8) Return the retractable power device of the pin pre-pressing mechanism, the retractable power device of the base pressing mechanism and the retractable power device of the horizontal push mechanism to the initial position.

The invention realizes the lifting and lowering of the horizontal pushing mechanism, the pre-pressing pin combination plate and the hanger assembly through the vertical lifting mechanism, so that the pre-pressing pin combination plate is in contact with the flange surface of the upper end of the base, and the pin holes on the pre-pressing pin combination plate are located. Align with the position of the pin holes on the upper surface of the base, the initial state of the push plate is that the pin holes on the push plate are aligned with the pin holes on the pin introduction plate, and each pin hole of the pin distribution plate is distributed through the vibrating feeder. After pinning, the lower end of the cylindrical pin is inserted into the pin hole on the push plate. The push cylinder works so that the push plate pushes the cylindrical pins forward along the grooves on the pin introduction plate until the lower part of each cylindrical pin is inserted into the pin hole on the pre-pressed pin combination plate; each vertical lifting mechanism and horizontal pushing mechanism The power units of all the power units are retractable devices (preferably air cylinders), which have the characteristics of controllable maximum stroke and stable operation of the piston rod, so it can ensure the accurate alignment of the pin holes on the pre-pressing pin combination plate and the pin holes on the base. Positive, because each cylindrical pin is limited by the pre-pressed pin combination plate and each pin hole on the push plate at the same time, the uniform distribution of each pin can be ensured, and then the base is pressed and positioned by the base pressing mechanism; The pre-pressing mechanism presses each pin into the set depth at the same time. The power device of each mechanism adopts a retractable device (preferably a cylinder), which has the characteristics of controllable maximum stroke and stable operation of the piston rod, so it can ensure the pin hole on the pre-pressing pin combination plate and the pin hole on the base. Accurate alignment can ensure the pre-pressing depth of the cylindrical pin, the verticality after pre-pressing and the uniform distribution on the flange surface of the base.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of a right side view of FIG. 1 .

FIG. 3 is an enlarged schematic structural diagram of the vertical lifting mechanism in FIG. 1 .

FIG. 4 is a schematic top view of the pin distribution assembly in FIG. 1 .

FIG. 5 is a three-dimensional schematic diagram of the pin introduction plate in FIG. 4 (pin holes and installation fixing holes are not drawn).

Detailed ways

As shown in FIGS. 1 and 2 , the pin pressing machine assembled on the base of the automobile air-conditioning compressor disclosed in this embodiment includes a support frame A, a pin feeding device B, a pin pre-compression mechanism C, and a base pressing mechanism D composition.

The support frame A includes a base plate A1, a cylinder support plate A2, and a base backing plate A3. The base plate A1 and the cylinder support plate A2 are both rectangular plates. The two cylinder support plates are symmetrically connected to both sides of the base plate in the length direction, and in the height direction. A U-shaped notch is formed in the middle of one side, and the base backing plate A3 is fixed at the bottom of the U-shaped notch between the two cylinder support plates A2.

As shown in FIG. 1 , the pin feeding device B includes a vertical lifting mechanism B1, a pin distribution assembly B2, a hanger B3, a horizontal pushing mechanism B4 and a pre-pressing pin combination board B5.

As shown in FIG. 3 , the vertical lift mechanism B1 includes a lift cylinder B11 , a carriage B12 and a lift frame B13 . The double-rod lifting cylinder B11 is arranged with the piston rod facing upward. One side of the outer wall of the rectangular cylinder body has a vertical guide groove, and the other side is fixed to the inner top of a cylinder support plate A2 by fasteners, and the head of the piston rod is connected The carriage B12 that matches the guide groove. The lifting cylinder of this embodiment adopts a double-rod cylinder, and the lifting frame B13 adopts an inverted T-shaped frame, and the upper part of the vertical plate is fixed to the outer wall of the sliding frame.

4 and 5, it can be seen that the pin distribution assembly B2 includes a pin introduction plate B21, a regular hexagonal plate B22 and six gusset plates B23 fixed on the upper side of its front part, and the middle position of each side of the regular hexagonal plate is There are semi-circular holes through its thickness, and there are corresponding semi-circular holes in the middle of the gusset plate. The two ends of the gusset plate are fixed with the regular hexagonal plate by fasteners to form six pin holes, namely the gusset plate B23 and the regular hexagonal plate. The shaped plate B22 is assembled to form a pin distribution tray that can distribute six pins at a time. There are corresponding pin holes on the pin lead-in plate B21.

The length direction of the pin introduction plate B21 corresponds to the corresponding grooves B211 at each pin hole, and a proximity switch along the horizontal direction is installed in each groove. The proximity switch detects whether there are cylinders in each pin hole on the pin introduction plate B12 pin.

1 and 2, it can be seen that the hanger B3 includes a rectangular bottom plate B31 and side plates B32 symmetrically connected to the front portions on both sides of the rectangular bottom plate in the longitudinal direction.

1 and 2, it can be seen that the horizontal push mechanism B4 includes a push cylinder B41 and a push plate B42, the push cylinder B41 is horizontally fixed on the rectangular bottom plate B31 of the hanger B3, and the push plate B42 is fixed on the slider of the push cylinder B41. . The upper side of the push plate B42 is provided with a lateral limit plate at the position corresponding to the bottom plate of the inverted T-frame, and the rear portion of the pin introduction plate has a corresponding upper groove corresponding to the lateral limit plate. The push cylinder of this embodiment adopts a mechanical rodless cylinder.

The front end of the rectangular bottom plate of the hanger B3 has a vertical support plate (blocked by the side plate B32 in Fig. 1 and Fig. 2), the rear end of the pre-pressed pin combination plate B5 is fixed on the vertical support plate, and the pre-pressed pin combination plate The front part of B5 has pin holes corresponding to the push plate B42, and the pre-pressed pin combination plate has baffles on both sides in the length direction, and a chute for the push plate movement is formed between the two baffles.

It can be seen from the above structure that the assembly parts of the horizontal push mechanism B4, the pre-pressing pin combination board B5 and the hanger B3 are fixed to the lower end of the vertical lifting mechanism B1 through the hanger, and the vertical lifting mechanism is fixed to the cylinder of the support frame A. On the support plate A2, the vertical lifting mechanism B1 can be used to realize the lifting and lowering of the pre-pressing pin combination plate B5.

After the horizontal push mechanism, the pre-pressing pin combination board and the hanger are fixed on the lower end of the vertical lifting mechanism, the lifting cylinder B11 of the vertical lifting mechanism B1 makes the pre-pressing pin combination board at the highest position.

The pin pre-compression mechanism C includes a pre-compression cylinder C1 arranged downward along the piston rod and a pin pre-compression block C2 connected to the lower side of the rectangular plate of the piston rod head of the pre-compression cylinder. The pin pre-compression block C2 is a rectangular block, and the lower end of the cylinder body of the single-rod cylinder C1 is fixed on the top of the support frame 1 corresponding to the front of the vertical lifting mechanism B1. The two sides of the pin pre-compression block C2 are fixed with vertical guide rods (blocked by the vertical installation plate D2 in Figure 1) through the connecting seat C3, and the upper end of the guide rod is fixed on the top of the U-shaped groove on the cylinder support plate A2. noodle. The pre-compression cylinder in this embodiment adopts a single-rod cylinder.

The telescopic power device of the base pressing mechanism D is a pressing cylinder D1 with a magnetic switch, which is arranged with the piston rod facing down. The head plate is connected with a base pressing plate D3, and the inner side of the base pressing plate D3 is used to press the flange surface of the base shell.

The working principle of the present invention is as follows:

When the vertical lifting mechanism B1 is in the initial state, its piston rod is in the state of extending to the maximum stroke, so that the horizontal pushing mechanism B4 is at the highest position. distance. When the frame turntable of the base equipment rotates to the pin pre-pressing station, the lifting cylinder B11 falls down, so that the lower side of the pre-pressing pin combination plate contacts the flange surface of the upper end of the base. The cylindrical pins are dropped from the pin feeding vibration plate of the equipment to the six pin holes on the pin distribution plate, and inserted into the pin holes on the push plate of the horizontal push mechanism after passing through the corresponding pin holes on the pin introduction plate B21. When each proximity switch on the pin lead-in board detects that each pin hole has a cylindrical pin, the push cylinder B4 pushes the pre-pressing pin combination board B5 to move forward, and pushes the cylindrical pin to the pre-pressing position. The pre-pressing cylinder C1 works, so that the pin pre-pressing block C2 simultaneously pre-presses the six cylindrical pins to the set depth. Since the piston rod of the pre-pressing cylinder is stably guided by the guide rod, the plane of the pin pre-pressing block can be guaranteed. degree, so as to ensure the verticality of the cylindrical pin after preloading. At this point, the pre-pressing of the cylindrical pin is completed, and the pre-pressing cylinder, the pressing cylinder and the pushing cylinder are returned to the initial state in turn, waiting for the next work.

Claims (10)

1. The utility model provides a pin pressure equipment machine for assembly of vehicle air conditioner compressor base which characterized in that: the pin pre-pressing mechanism comprises a support frame, a pin feeding device, a pin pre-pressing mechanism and a base pressing mechanism;

the pin feeding device comprises a vertical lifting mechanism, a pin distributing assembly, a hanging bracket, a horizontal pushing mechanism and a pre-pressing pin combination plate;

the vertical lifting mechanism comprises a telescopic power device which is vertically arranged and a lifting frame driven by the telescopic power device;

the pin distributing assembly comprises a pin guiding plate and a pin distributing disc fixed on the upper side of the front part of the pin guiding plate, corresponding pin holes are formed in the pin distributing disc and the pin guiding plate, and corresponding grooves are formed in the length direction of the pin guiding plate corresponding to the pin holes;

the hanger comprises a rectangular bottom plate and side plates at the front parts of two sides of the rectangular bottom plate in the length direction;

the horizontal pushing mechanism comprises a telescopic power device and a push plate driven by the telescopic power device;

a telescopic power device of the vertical lifting mechanism is fixed at the top of the support frame, the pin guide plate is horizontally arranged, and the rear part of the pin guide plate is fixed at the lower end of the lifting frame; the top of the hanger side plate is fixedly connected with the two sides of the rear part of the pin guide-in plate; the telescopic power device of the horizontal pushing mechanism is parallel to the pin guide-in plate and fixed on the rectangular bottom plate of the hanger, the front part of the push plate is positioned at the lower side of the pin guide-in plate, and corresponding pin holes are arranged at the positions corresponding to the pin holes; the pin prepressing composition plate is horizontally arranged and fixed at the front end of the hanger and corresponds to the lower side of the push plate, and the front part of the hanger is provided with a corresponding pin hole; the positions of the pin holes are configured according to the positions of the pin holes on the upper surface of the base;

the pin prepressing mechanism comprises a telescopic power device which is vertically arranged and a pin prepressing block which is driven by the telescopic power device, and the telescopic power device is fixed in front of the top of the support frame corresponding to the vertical lifting mechanism;

the base pressing mechanism comprises telescopic power devices and base pressing plates, the telescopic power devices are vertically arranged, the base pressing plates are driven by the telescopic power devices, and the telescopic power devices are symmetrically arranged on two sides of the pre-pressing mechanism.

2. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 1, wherein: the support frame includes bottom plate, cylinder backup pad and base fixed plate, and bottom plate and cylinder backup pad are the rectangular plate, and two cylinder backup pads are along vertical symmetric connection in the length direction both sides of bottom plate, and U type breach has been seted up to the direction of height front side middle part of cylinder backup pad, and the base fixed plate is connected in the U type breach bottom of both sides.

3. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 2, wherein: the telescopic power device of the vertical lifting mechanism is a lifting cylinder, a double-rod cylinder is selected, a piston rod of the double-rod cylinder is arranged upwards, a vertical guide groove is formed in the outer wall of one side of a rectangular cylinder body, the other side of the rectangular cylinder body is fixed to the top of the inner side of a cylinder supporting plate through a fastener, the head of the piston rod is connected with a sliding frame matched with the guide groove, the lifting frame is an inverted T-shaped frame, and the upper portion of a vertical plate of the lifting frame is fixed.

4. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 1, wherein: the telescopic power device of the horizontal pushing mechanism is a pushing cylinder, a mechanical rodless cylinder is selected, and the push plate is fixed on a sliding block of the mechanical rodless cylinder.

5. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 1, wherein: the pin distribution disc comprises a regular hexagonal plate and six buckling plates, semicircular holes penetrating through the thickness of the regular hexagonal plate are formed in the middle positions of the edges of the regular hexagonal plate, corresponding semicircular holes are formed in the middle positions of the buckling plates, and the two ends of the buckling plates are fixedly formed with the regular hexagonal plate through fasteners.

6. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 1, wherein: and a proximity switch is arranged in the groove on the pin guide plate.

7. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 1, wherein: the front end of the hanger bottom plate is provided with a vertical supporting plate, the rear end of the pre-pressing pin combination plate is fixed on the vertical supporting plate, flanges are arranged on two sides of the length direction of the pre-pressing pin combination plate, and a sliding groove for the push plate to move is formed between the flanges on the two sides.

8. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 2, wherein: the telescopic power device of the pin prepressing mechanism is a prepressing cylinder, a single-rod cylinder is selected for use, a piston rod of the single-rod cylinder is arranged downwards, the head of the piston rod is a rectangular plate, a pin prepressing block is a rectangular block and is fixed on the lower side of the rectangular plate, two sides of the pin prepressing block are fixed with guide rods along the vertical direction through connecting seats, and the upper ends of the guide rods are fixed on the top surfaces of U-shaped grooves in the cylinder supporting plate.

9. A pin press-fitting machine for base assembly of an air conditioner compressor for vehicles according to claim 2, wherein: the telescopic power device of the base pressing mechanism is a pressing air cylinder with a magnetic switch, a piston rod is arranged downwards, a rectangular cylinder body of the base pressing mechanism is fixed on the outer side of an air cylinder supporting plate through a vertical mounting plate, a head plate of the piston rod is connected with the base pressing plate, and the flange surface of the base shell is pressed through the inner side of the base pressing plate.

10. A method for prepressing pins of a base by using the press-fitting machine of claim 1, comprising the steps of:

(1) enabling a piston rod of a lifting cylinder of the vertical lifting mechanism to be in a state of extending to the maximum stroke, and enabling the pre-pressing pin combination plate to be at the highest position;

(2) the sliding block of the pushing cylinder is positioned at the rearmost end position, and the pin hole in the push plate is aligned with the pin hole in the pin guide-in plate;

(3) the piston rod of the lifting cylinder retracts to a retracting state, so that the pre-pressing pin combination plate descends to the surface of the base;

(4) distributing cylindrical pins in each pin hole of the pin distribution disc through a vibration feeder, and detecting that the cylindrical pins are arranged in each pin hole on the pin guide-in plate through a proximity switch;

(5) pressing a base pressing block of the base pressing mechanism to press the outer edge of the flange surface of the base;

(6) the sliding block of the pushing cylinder moves to the foremost position, and the lower end of the cylindrical pin on the push plate is inserted into the pin hole on the pre-pressing pin combination plate;

(7) the lower parts of the pins are pressed into pin holes on the flange surface of the base through a pin prepressing mechanism;

(8) the retractable power device of the pin prepressing mechanism, the retractable power device of the base pressing mechanism and the retractable power device of the horizontal pushing mechanism are all returned to the initial position.

Images